diff --git a/.project-docs/30-worklog/tasks/20260928-merge-reply-cleanup-eb8d39b3.md b/.project-docs/30-worklog/tasks/20260928-merge-reply-cleanup-eb8d39b3.md
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+# Task: Merge teacher reply cleanup and approved UI changes into main
+
+## Identity
+
+- Task ID: 20260928-merge-reply-cleanup-eb8d39b3
+- Mode: Feature
+- Branch: codex/20260928-merge-reply-cleanup-eb8d39b3-merge-reply-cleanup
+- Worktree: /Users/chillishark/Makelore 麦洛/.codex-worktrees/makelore/20260928-merge-reply-cleanup-eb8d39b3
+- Base commit: a21a1f077cc11976213290a6b843bb74be97ab44
+- Owner: codex
+- Status: In progress
+
+## Scope
+
+- Merge committed teacher/UI cleanup source 40c247a into latest origin/main and push normally; preserve existing continuous-chat and per-turn project/version behavior.
+
+## Intent And Constraints
+
+- User explicitly authorizes main integration and repository push; packaging belongs to their colleague. No packaging, native app restart, cloud publication, real model calls or focus changes. Preserve all foreign worktrees and source records.
+
+## Outcome
+
+- Source cleanup merged locally with continuous-chat conflict resolutions; latest remote advanced during verification and is being incorporated before publication.
+
+## Verification
+
+- Initial merge: typecheck and production Vite build passed; lint passed with 8 existing warnings. Focused backend/context/parser/browser tests 186 passed; backend overlap suites 169 passed; UI suites 127 passed and after extra regressions UI suite 61 passed; headless layout 15 passed. These overlapping runs are not an additive unique-test count.
+- Project structure checker passed. Drift checker reports the source cleanup task record as foreign because the merge imports it unchanged; no source record or canonical file was authored here.
+- Remote main moved from a21a1f0 to 077184a and already includes source 40c247a plus independently integrated reply recovery, protocol boundary and welcome fixes. Preserve that full main and add only necessary overlap safeguards before final revalidation.
+
+## Follow-ups
+
+- None recorded.
+
+## Promotion Candidates
+
+- None recorded.
+
+## Project Context Loaded
+
+- Identity verified by official start/status: feature task `20260928-merge-reply-cleanup-eb8d39b3`, this managed worktree/branch, base `a21a1f077cc11976213290a6b843bb74be97ab44`. Source checkout is owned by the completed cleanup task and still hosts the temporary app, so it remains read-only.
+- Read entry/memory index, own record, project positioning, latest integrated state, decisions, architecture, success criteria and all registered peer scope/intent/promotion sections. Reuse previously loaded teacher domain/evidence/reflection/commitment context; changed continuous-chat rules checked against current main/source task records.
+- Goal: student-owned creation with cloud-defined teachers, Main-owned request/history/version boundaries, prose and quick replies only. Preserve main's unique account/Agent chat and per-turn project/source/version; remove retired component UI/protocol/state and retain approved empty-composer hint/retry/preview-header styling.
+- Other tasks: a broader latest-main integration is also registered planning; prepare this requested source in isolation, check remote again before push and never overwrite a concurrent remote advance. Prompt-boundary, truncation repair and welcome changes are separately owned and not added speculatively. Child-language task is unfinished. Canonical integration lock is held elsewhere; keep all canonical/source records read-only.
+- New integrated single-chat behavior is compatible with component cleanup; overlaps require combined code/tests rather than choosing an entire side. No new product decision needed. Gate Passed.
+
+## Plan
+
+1. Merge source 40c247a into fetched main in this isolated branch; preserve source history and resolve overlaps with the current continuous-chat contract.
+2. Verify backend/context/parser/history and UI/preview/refresh paths, typecheck, lint, production compile and headless layout; independently review the merge.
+3. Recheck origin/main, integrate any concurrent advance, push normally to main and verify remote ancestry/hash. Keep the live trial checkout; packaging and app updates are outside this request.
diff --git a/.project-docs/30-worklog/tasks/20260928-teacher-reply-cleanup-c8e4a219.md b/.project-docs/30-worklog/tasks/20260928-teacher-reply-cleanup-c8e4a219.md
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+# Task: Retire teacher discussion components and preserve text replies and quick replies
+
+## Identity
+
+- Task ID: 20260928-teacher-reply-cleanup-c8e4a219
+- Mode: Feature
+- Branch: codex/20260928-teacher-reply-cleanup-c8e4a219-teacher-reply-cleanup
+- Worktree: /Users/chillishark/Makelore 麦洛/.codex-worktrees/makelore-teacher-reply-cleanup
+- Base commit: ae0f72d8fa0089f87b41d272da220e1c1397aec8
+- Owner: codex
+- Status: Ready for Integration
+
+## Scope
+
+- Remove retired visual discussion components from UI, state, context, parser, service and routes; keep teacher prose, clickable quick replies and free input.
+- Preserve opaque historical data, agent/version selection, read tools, proactive check-ins, billing and operational Agent.
+
+## Intent And Constraints
+
+- User explicitly authorizes this product change, superseding old component-based teaching plans. Do not publish cloud configuration, restart applications or steal desktop focus.
+- Gates passed: read AGENTS, project entry/read-before-planning, memory and indexes, relevant positioning/teacher decision/domain/architecture/current-state/evidence/commitment/stale records, success criteria and peer task scopes. Managed feature worktree identity verified against registry.
+- Isolated from the live trial checkout. Frontend and reply protocol implementation delegated; backend/context/store and integration verification owned here.
+- Follow cloud agent configuration for persona, length, prefixes and style; keep only output format and single-angle guided-help requirements locally.
+- Plan: remove active component plumbing; retain passive legacy fields; add UI/parser/history/service/cloud regressions; run typecheck, targeted/full unit checks, build and guarded UI verification; document and commit.
+
+## Outcome
+
+- Removed all four interactive discussion views, their dedicated CSS, state/focus/conversion/lifecycle actions, client mutation API, Host API mutation routes and backend state machine. Pending drafts restore only current send fields while retaining request identity for safe retry.
+- Ordinary questions and guided-help/suggestions use one text + quickReplies envelope. The local runner and cloud final-output path preserve project reads while keeping tool preambles out of the answer. Check-ins keep their existing plain-text path and scheduling/dedup behavior.
+- Removed old component schemas/instructions, hard-coded suggestion counts/length/student-voice policy and check-in/guided-help brevity additions. “帮我看看” recommends one concrete starting point with replies around it. Published persona, skills, language, length, prefixes and style remain authoritative; no Alice-specific runtime content.
+- Legacy discussion/context/snapshot/error data stays opaque and unmodified on read/list/save/recovery. No component is restored or updated. The parser supports old intro/questions, reply envelopes with inert tool data and damaged historical envelopes; only prose and suggestions survive. Raw parse failures or received cancelled output remain inert diagnostics, excluded from context/read_conversation.
+- Kept teacher selection/version binding, readonly project/source tools, native/cloud billing and request identities, cancellation, source/account guards, active check-ins and operational Agent unchanged.
+- README now describes the supported product behavior. No cloud publication, real application restart, live trial update or desktop focus change. Work is retained on this isolated feature branch.
+
+## Verification
+
+- `corepack pnpm run typecheck`: passed after the combined changes.
+- `corepack pnpm run lint:check`: passed; scoped ESLint rerun after final parser/service changes passed.
+- Final duplicate-card regression: both ordinary and guided suggestion cards use request ID + index keys; two repeated-text click/draft cases fail before the fix and pass after it. UI suite 52/52 and scoped ESLint passed; typecheck/build rerun after this final code edit.
+- Targeted teacher backend/cloud/model/read-tools/UI/parser/history/route/guidance run: 9 files, 281 tests passed. Frontend agent also verified teacher companion and chat panel suites: 103 tests passed across its initial 3-file run.
+- `corepack pnpm test`: first stage ran 261 files, 259 passed; 2551 tests passed, 3 skipped, 3 failed. The 3 failures are pre-existing Pi event-projector message expectations (2) and managed-worker-opener runtime-v6 versus v7 expectation (1). Isolated `git archive HEAD` base snapshot ae0f72d reproduces the exact same failures (3 failed / 12 passed); these tests and production coding-runtime/contracts/reducer paths have no task diff. Evidence: /tmp/makelore-teacher-reply-full-tests.log and /tmp/makelore-teacher-reply-baseline-tests.log.
+- The test script’s pressure stage was skipped by its `&&` after baseline failures, so ran `coding-chat-pressure.test.tsx --maxWorkers=1` separately: 1 passed.
+- `corepack pnpm run build:vite`: passed for Renderer, Main, Preload and utility worker. Generated output stayed ignored in this isolated checkout.
+- Playwright teacher-reply-layout fixture: 12 headless Chrome checks passed at 319px/508px; rich Markdown/font checks rerun after shared dependency allow-list fix: 2 passed. No Electron/native app launch. Shared Electron first-chat spec updated to assert absence of retired send fields, but native suite deliberately not launched under the no-restart/no-focus constraint.
+- Independent review found and resolved ordinary JSON questions/tool examples being mistaken for protocol and an aborted runner resolving normally losing received diagnostic bytes. Regressions cover both.
+- Production search confirms old component words/schemas remain only as passive archive types, historical transport/fence recognition, and test data. No active lifecycle/prompt/action code remains. Model-bound history and read tools use only prose + quick replies; no legacy archived fields or raw failures enter the model.
+- `check_project_docs.py`, task-aware drift check and `git diff --check`: passed before handoff.
+
+## Follow-ups
+
+- Integration must preserve the independent manual agent-refresh work while dropping its obsolete component state assumptions; this branch intentionally does not import another task’s unmerged feature.
+- Track the three existing unrelated Pi test expectation failures separately. No production Pi changes are included here.
+- Cloud agent configuration and cloud-side stored conversation history were not inspected or published; verification establishes what this client now sends, not an audit of remote prompt contents. Existing pinned versions are intentionally preserved.
+- Task was not merged, pushed or deployed. No post-merge worktree cleanup applies.
+
+## Promotion Candidates
+
+- Targets: `30-worklog/current-state.md`, `10-decisions/ADR-2026-09-22-coding-teacher.md`, `20-architecture/data-flow.md`, `40-domain/business-rules.md`.
+- Proposal: current teacher UX is prose plus clickable quick replies/free input; retire prior ideas/structure/flow/comparison component plans and model schema/state instructions. Preserve opaque historical data and the teacher responsibility of organizing ideas, understanding relationships and carrying confirmed consensus; published configuration owns expression policy.
+- Evidence: explicit user direction in this task, deleted UI/API/state/schema paths, parser/history/model-payload regressions, headless interactive verification.
+- Impact/conflict: supersedes prior active component lifecycle and multiple-topic suggestion assumptions; no automatic migration or history deletion, no change to source/version/billing/operational Agent boundaries. Prior feature-task records remain historical evidence.
+- Human confirmation: already supplied by this task’s explicit product requirements; canonical promotion must still happen in a serialized integration task.
+
+
+## Authorized Background Restart Follow-up
+
+- User explicitly requests restarting the application using the latest project state, superseding the earlier no-restart boundary. Keep no cloud publication and no desktop-focus takeover.
+- Context gate passed on the same task/worktree/branch. Reread own task, entry/memory, positioning, current-state, teacher ADR/architecture, evidence/reflection/commitment references and all peer task scopes. The accepted product simplification supersedes stale active-component documentation; no canonical edits here.
+- Current trial PID 27713 still uses the hover checkout’s Main but its Renderer was independently updated to committed manual-refresh source 4f6bda4. Preserve this existing trial feature by merging that commit into this task; resolve the one consultation-state conflict with shared catalog state and no retired focus state. Do not import the unrelated in-progress Alice policy branch or change main.
+- Plan: validate the combined teacher/refresh paths, build the combined source, create an ignored background-launch wrapper, gracefully stop only the exact temporary-app PID and relaunch the same bundle/profile/port; verify loaded build and startup without focus. Installed production application is outside scope.
+- Same user-data retains persisted project/history and consultation drafts. Unpackaged authentication and operation drafts are memory-owned; do not claim a restart guarantees persistence of data the product does not save.
+
+
+### Restart Outcome
+
+- Merged committed manual-refresh source 4f6bda4 into this feature branch as 9adab45, retaining cleanup source 998796d. Independent review confirms catalog refresh/current topic version/drafts and reply-only UI all remain; the sole conflict was resolved without restoring retired focus state.
+- Combined validation passed: typecheck, 112 teacher UI/companion/chat tests, changed-file ESLint, Renderer/Main/Preload/utility build and whitespace checks. No new backend logic changed after the previously recorded full regression run.
+- Sent SIGTERM only to verified trial PID 27713; its normal app.quit cleanup completed and port 54599 was released. Relaunched the exact existing trial bundle with open -g -j and an ignored wrapper for this checkout. New PID 36109 serves 54599; OPTIONS /api/app/runtime-info returned 204.
+- Runtime source/build is 9adab45, Renderer index-Dn2S79es.js loaded from this checkout, document complete and React mounted. Startup guard blocked one show and retained a hidden, unfocused window until user activation. A 12-second NSWorkspace monitor recorded trialFocused=false and unchanged foreground PID 409. Installed production PID 23486 remains untouched.
+- Preserved the same trial user-data directory. Updated only local trial launch metadata after backing up prior descriptors. No cloud configuration publication, deliberate model request, history seeding or UI activation. This checkout must remain available while the trial uses its build.
+- Task-aware drift checker now flags the imported peer task record 20260928-agent-refresh-a6d109b3 relative to the original task base. It is a committed dependency imported by the authorized merge, verified byte-for-byte identical to 4f6bda4; no peer document was edited. Record this inherited-source diagnostic rather than claiming the checker passed after merge. Canonical project documents remain untouched.
+
+
+## Empty Composer Hint Follow-up
+
+- User approved the first proposed interaction: show a lightweight “给我一点提示” action only when the consultation input is empty, hide it when typing and remove the fixed “我也说不清，你带我看看” link below replies. Update the existing trial without desktop focus changes.
+- Same-task ownership resumed and verified; rechecked task/entry and peer scopes. The protocol-boundary peer is complete but unmerged and not live in this trial; preserve its separate prompt-policy decisions for its designated integration task, do not change backend policy as part of this UI request. Existing manual refresh is already included.
+- Plan: modify only the composer entry and fixed follow-up link, preserve true generated cards/free input/retries, add focused UI and browser checks, build and update trial Renderer while retaining Main and persisted data where possible. No cloud publication or deliberate model test request.
+
+### Hint Implementation And Verification
+
+- Replaced the filled “帮我看看” pill with a transparent “给我一点提示” text action in the empty composer. Typing hides it; clearing or whitespace restores it. A fixed minimum action-row height and left flex slot retain the send button’s position. Removed only the client-added “我也说不清，你带我看看” footer; identical text genuinely returned by the Agent still renders and sends as an ordinary generated reply.
+- Preserved quick replies, free input, references/drafts, failure/cancel/interruption retries, and one-click request behavior. When an old unconfirmed suggestions payload still says “帮我看看”, retry now reuses the complete original payload and request ID; ordinary questions and already-confirmed requests cannot reuse it. Old guided-help intent remains readable for history compatibility; no backend/cloud policy changed.
+- Verification passed: 59 UI unit tests (including five legacy pending-payload cases), 14 headless Chrome layout tests at 319/508px, typecheck, full lint followed by final changed-file lint, and production Renderer/Main/Preload/utility compile. Legacy regressions failed before the compatibility fix and passed afterward. Updated shared Electron E2E assertions but did not launch a native test application. No real model request was made for verification.
+- Built with `corepack pnpm run build:vite --emptyOutDir false` so the live Renderer can keep loading its old hashed assets until the deliberate refresh. Saved previous index and bootstrap/launch descriptors locally outside Git; current Main is retained for the pending Renderer update.
+
+### Hint Trial Refresh Outcome
+
+- Implemented UI is committed as 73331e6; refreshed only the existing trial Renderer to `index-IW_wuxZ1.js`. Main PID 36109 and Host API 54599 remain running from the earlier 9adab45 launch. No native app restart, production application change, cloud publication, merge or push. Local launch metadata now records both running Main and Renderer versions, and the next-launch wrapper points to the current build.
+- Preserved state only in Main memory during refresh, with busy request/attachment/flight gates and temporary show/focus guards. Did not read or copy auth tokens or all localStorage. After refresh, the current authenticated account matched the pre-refresh account, and project/conversation/route, operation/provisional drafts, composer contents and persisted consultation drafts matched. Both visible composers were empty; no claim of a live nonempty draft scenario is needed beyond the automated regressions.
+- Verified actual DOM has the new transparent 13px hint, no old fixed footer element, mounted app and current script hash. Read-only composer screenshot inspected at the local trial `hint-preview.png`; it matches the intended light text interaction. 12-second foreground monitor recorded trialFocused=false with unchanged foreground PID 19791. Main focus calls were guarded and none occurred.
+- Temporary inspector and Main-memory backup removed after verification. Runtime metadata/verification/screenshots remain local and ignored/outside Git. The managed checkout must remain available while this temporary app uses its compiled files.
+- Project-doc structure and whitespace checks pass. Task-aware drift still reports only the unchanged imported manual-refresh task record from the authorized earlier merge; reconfirmed no difference against 4f6bda4. No canonical or peer task document was edited by this UI follow-up.
+
+## Playful Retry Follow-up
+
+- User requests the retry button label “继续看看👀” and a more playful appearance; continue the same temporary-app preview without taking desktop focus.
+- Project Context Loaded: same feature task/branch/worktree/base identity above, registry ownership resumed and verified. Reread entry, active task and all peer Scope/Intent/Promotion sections; reuse already-read unchanged positioning, integrated snapshot, teacher decisions, architecture/domain, evidence/reflection and commitment context. Makelore remains a single light creation workspace; scope is only the existing failed/cancelled/interrupted suggestion retry affordance. Separate protocol-policy work stays isolated; old component documents are historical and superseded by this task’s accepted removal. No new semantic conflict. Gate Passed.
+- Plan: change label and scoped button CSS to a warm rounded sticker with a small pressed shadow, retaining keyboard/disabled/reduced-motion support; update existing retry tests, inspect a headless screenshot, build and refresh only the trial Renderer with the existing state-preservation method. User-requested emoji overrides the design skill’s generic preference against emoji icons.
+
+- Implemented exact label “继续看看👀” with a cream-yellow 44px minimum-height sticker button, asymmetrical rounded corners, warm outline and shallow bottom shadow. Hover warms the fill; press lowers the shadow. Disabled and keyboard focus behavior remain, and reduced-motion disables transform/transition. No request or retry behavior changed.
+- Passed: 59 existing UI tests updated for the new label, 15 headless layout checks including failed/cancelled retry at 319px with draft preservation, typecheck, full lint, production build and whitespace checks. Inspected the failed-state screenshot; the button fits the narrow panel without clipping. Tests use fixtures only.
+
+- Trial updated from committed cb48f60 to Renderer `index-D5o0Sba7.js`; running Main PID 36109/54599 and its 9adab45 code remain. Initial snapshot correctly refused while a teacher request was running; waited for completion before the state-preserving Renderer refresh. Existing successful reply is retained, without fabricating a failed live request to demonstrate retry. The new retry CSS is loaded; actual failed/cancelled appearance was verified in the headless fixture.
+- Verified same login/account/project/conversation/route, operation drafts, composer values and all persisted consultation draft text/references/pending payloads. One persisted absent pending field normalizes to null on mount; semantic comparison confirms no draft content or request identity was lost. Runtime verification contains only boolean/style/build metadata, no draft bodies or credentials. Temporary Main-memory backup and inspector removed.
+- Foreground monitor: trialFocused=false, unchanged foreground PID 88503. No show/focus calls were needed. Local trial metadata and next-launch bootstrap updated; production app untouched. No cloud publication, deliberate model test request, main merge or push.
+- Documentation structure and whitespace checks pass; the task-aware drift diagnostic remains limited to the unchanged imported manual-refresh task record described above, reconfirmed identical to 4f6bda4.
+
+## Visible Hint Clarification
+
+- User could not see the prior rename. Read-only runtime inspection confirmed the new build was loaded but no failed/cancelled request was currently displayed; the visible empty-composer entry still said “给我一点提示”. Explained the distinction and user explicitly confirmed to rename/style the composer entry too.
+- Same task identity/ownership resumed and verified; reuse this follow-up's loaded project/peer context with no new conflict. User clarification supersedes the earlier preference for a transparent text hint. Plan: share the warm sticker styling between hint and retry, send the matching new label through the existing suggestions intent, preserve empty/type/clear behavior and legacy pending-payload reuse. Increase the reserved action-row height to 44px so the send control remains still. Update existing tests and preview with a background Renderer refresh. No backend or cloud-policy change.
+
+- Implemented shared hint/retry sticker styling and exact “继续看看👀” composer label/payload. The hint still hides on nonempty input; reserved 44px action height keeps the send button fixed. Existing request identity reuse covers both former labels (“帮我看看” and “给我一点提示”), without changing saved history.
+- Verification passed: typecheck, full lint plus final test-file lint, production build, 59 UI tests and 15 headless browser checks. Existing tests distinguish the two same-label controls by composer/reply location. Screenshots at 319/508px show the visible empty-composer button and confirm no clipping or send-button movement. Shared native E2E assertions updated without launching a native test app.
+
+- Refreshed existing trial Renderer from committed 784fa8c to `index-DLBsnWbW.js`. Main PID 36109 and profile retained. Final DOM confirms visible composer hint text “继续看看👀” with `rgb(255, 242, 201)` background; captured and inspected the actual empty-composer screenshot `visible-hint-preview.png` in the local trial root. Login/account/project/draft/input/route checks passed; no generated conversation content or requests were inserted for demonstration.
+- Window/panel/selection state changed during the live verification: the consultation panel was closed at snapshot and open at final capture, and the selection equality check was false. Preserved current interaction without a second forced selection restore; do not claim exact conversation/window state remained unchanged. The foreground monitor already observed the trial as its sole foreground application; refresh invoked no show/focus calls. Final capture was taken with the window unfocused.
+- Temporary backup memory and inspector removed; local launch/build metadata updated. No cloud publication, Main restart, main merge or push. Final documentation drift has only the previously recorded unchanged imported task document diagnostic.
+
+## Embedded Work Preview Header Follow-up
+
+- User requests removal of the pictured horizontal “作品预览” title/icon/close row. Continue the current temporary workspace preview without taking desktop focus.
+- Same feature ownership resumed and verified. Reused unchanged previously loaded project context; reread own task/entry and newly active welcome/truncation/role-review task records. Existing peer scopes remain unchanged; no work-preview overlap or unresolved product decision. Gate Passed. This scoped presentation change preserves the shared browser's lifecycle, navigation, recovery, native viewport and separate developer-browser UI.
+- Plan: hide the redundant header only in embedded work preview, retain an accessible aside name and the existing top-level operation/work tabs; keep address navigation and standalone browser close controls. Update existing unit/native E2E assertions, compile, and refresh only the temporary Renderer. Main/remote branches and installed production application remain unchanged.
+
+- Implemented conditional removal of the entire embedded title row (globe icon, “作品预览”, close button); the work-preview aside remains accessibly named. Address/back/forward/reload controls and the native viewport remain, while the standalone developer-browser header and close action are unchanged.
+- Passed: 44 AgentBrowserPanel/CodingChatPanel unit tests, typecheck, full lint plus scoped test lint, full production compile and whitespace check. Updated shared Electron work-tab assertions without launching a native test instance.
+
+- Code committed as 064096e and new build prepared. The safe refresh snapshot detected an operation run in progress and refused to reload. Applied a narrowly scoped live stylesheet to the existing Renderer instead: only the embedded preview's old first div/title row is hidden, including after it mounts again. Current work tab was closed, so no live header screenshot or mounted-viewport assertion is claimed. The new compiled component permanently omits the row when next loaded. No work-tab switch, browser startup, model request, page reload or application restart was performed.
+- Main PID 36109 and running Renderer 784fa8c remain; local descriptors explicitly distinguish the 064096e visual overlay/next build from the currently loaded script. Main focus/visibility stayed unchanged and no focus action was called. Temporary inspector closed; no draft, request, account, history or operation state was copied or reset. Installed production app and remote main remain unchanged.
+- Final documentation structure/whitespace checks pass; task-aware drift retains only the previously documented unchanged imported manual-refresh task record diagnostic.
diff --git a/README.md b/README.md
index 08bcd2c8..a0a2e1ca 100644
--- a/README.md
+++ b/README.md
@@ -154,7 +154,7 @@ Pi 正式包必须继续运行 `pnpm run verify:artifact:pi`、`pnpm run smoke:p
 - 首次发送会立即生成稳定的乐观用户消息；HTTP 202 只表示本地 Agent 已接收。后续失败不会删除已接受消息，不确定交付不会自动重发；准备失败可在目标 Conversation 上手动恢复。
 - 运行中的 Conversation 可把新消息作为 steer 引导当前回答或 follow-up 排到下一轮，并显示队列位置；队列正常在 `agent_settled` 后释放，用户可中止当前运行。若 Pi 已终结但该握手丢失，Main 会在 30 秒宽限后仅探测目标线程：权威 idle 状态会补齐持久化最终回复并 exactly-once 释放 ownership，矛盾状态则显式失败该目标，且不会重放已接受请求。select/confirm/input/editor 交互在输入区上方回答，select 除预设选项外支持自由输入；交互提交或取消后立即从输入区移除，失效请求会就地提示并允许重试或取消。
 - 隐藏 Conversation 的红色新消息标记只在出现新的待回答交互，或当前任务进入 completed、failed、aborted 终态时设置；助手流式文字、思考、工具过程和单个工具失败不会提前触发红点。
-- 核心聊天页左侧显示品牌、项目及其对话；标题栏显示项目与当前 Conversation，并在右上角提供统一智能体入口和必要的中止/恢复按钮。中央“操作对话／作品”切换真实对话与项目浏览器预览，切换时保留操作草稿。点击智能体头像或主动气泡中的聊天入口，会同时打开智能体咨询并默认切到“作品”；仍可手动切回操作对话，单纯收到智能体气泡不会切换页面。点击“作品”会由 Main 检查已知本地页面：可访问则直接复用，否则向编程 Agent 发送固定的内部打开作品指令，检查现有服务、按项目实际脚本启动并调用 `agent_browser` 展示。当前项目正在制作时先等待；同一启动过程防止重复派发。失败时提供明确恢复入口：登录失效可“登录并继续”，返回相同账号和项目后接着打开；作品未打开可“帮我检查并打开”；普通操作中断可“帮我继续”，先核对已有进度再继续，保留当前输入草稿。仅对连接检查做两次有上限的自动重连并复用请求身份，不自动重放结果不确定的操作。最新失败提供一个恢复入口，空错误不再显示“本次处理失败。”；作品成功打开后收起对应失败提示。后台休眠释放预览窗口后，Main 在本次应用会话内保留项目对应的已验证地址，包括从地址栏或 Agent 成功打开的页面；回到前台或收到关闭状态时自动检查并恢复仍可访问的作品，不重复调用 Agent，也不依赖模型登录。手动打开成功会覆盖旧的启动请求结果，但不关闭后续恢复检查。窗口显示时发生关闭竞态会自动重试两次；仍无法显示则提供“重新打开作品”，不向学生暴露“开发浏览器已关闭”等内部错误，也不无限停留在打开中。内部指令不消耗学生草稿，也不参与对话自动命名，时间线隐藏这条内部指令及“已点击打开作品”操作记录，保留真实的处理结果和错误。学生作品区不展示 Console/Network 调试栏，也不订阅这两个面板的调试事件；Agent 的后台调试能力保留。项目设置、归档和会话管理保留在左侧。从已持久化的 user 消息仍可“从这里创建新对话分支”，assistant 消息和未持久化消息不提供该动作；分支只创建新的 Conversation 历史，不表示文件回滚。Pi 的工具调用与浏览器附件继续在对应的对话过程节点中按需展开；分享、待办、全局运行时和 revert/unrevert 不属于该产品界面。
+- 核心聊天页左侧显示品牌、项目及其对话；标题栏显示项目与当前 Conversation，并在右上角提供统一智能体入口和必要的中止/恢复按钮。中央“操作对话／作品”切换真实对话与项目浏览器预览，切换时保留操作草稿。作品区直接显示地址栏和页面，不再重复显示“作品预览”标题、图标及关闭横栏；通过上方“操作对话”标签切回对话。点击智能体头像或主动气泡中的聊天入口，会同时打开智能体咨询并默认切到“作品”；仍可手动切回操作对话，单纯收到智能体气泡不会切换页面。点击“作品”会由 Main 检查已知本地页面：可访问则直接复用，否则向编程 Agent 发送固定的内部打开作品指令，检查现有服务、按项目实际脚本启动并调用 `agent_browser` 展示。当前项目正在制作时先等待；同一启动过程防止重复派发。失败时提供明确恢复入口：登录失效可“登录并继续”，返回相同账号和项目后接着打开；作品未打开可“帮我检查并打开”；普通操作中断可“帮我继续”，先核对已有进度再继续，保留当前输入草稿。仅对连接检查做两次有上限的自动重连并复用请求身份，不自动重放结果不确定的操作。最新失败提供一个恢复入口，空错误不再显示“本次处理失败。”；作品成功打开后收起对应失败提示。后台休眠释放预览窗口后，Main 在本次应用会话内保留项目对应的已验证地址，包括从地址栏或 Agent 成功打开的页面；回到前台或收到关闭状态时自动检查并恢复仍可访问的作品，不重复调用 Agent，也不依赖模型登录。手动打开成功会覆盖旧的启动请求结果，但不关闭后续恢复检查。窗口显示时发生关闭竞态会自动重试两次；仍无法显示则提供“重新打开作品”，不向学生暴露“开发浏览器已关闭”等内部错误，也不无限停留在打开中。内部指令不消耗学生草稿，也不参与对话自动命名，时间线隐藏这条内部指令及“已点击打开作品”操作记录，保留真实的处理结果和错误。学生作品区不展示 Console/Network 调试栏，也不订阅这两个面板的调试事件；Agent 的后台调试能力保留。项目设置、归档和会话管理保留在左侧。从已持久化的 user 消息仍可“从这里创建新对话分支”，assistant 消息和未持久化消息不提供该动作；分支只创建新的 Conversation 历史，不表示文件回滚。Pi 的工具调用与浏览器附件继续在对应的对话过程节点中按需展开；分享、待办、全局运行时和 revert/unrevert 不属于该产品界面。
 
 - 普通消息接收成功不显示额外的技术提示；准备、错误和排队状态仍正常反馈。发送状态按请求对应的运行结束收敛，保留期间输入的新草稿；恢复历史时优先以持久消息身份关联，避免相同文本串联到其他请求。
 
@@ -172,21 +172,21 @@ Pi 正式包必须继续运行 `pnpm run verify:artifact:pi`、`pnpm run smoke:p
 - 客户端没有内置老师／朋友角色。已下发智能体以头像和名称并排显示在标题栏，点击后打开对应智能体的讨论；数量较多时横向滚动，咨询面板不再提供智能体下拉框。名称、头像、简介、欢迎语和推荐问题均由服务端提供。首次使用默认选择运营指定项，各智能体的未发送草稿分别保存，同一账号与同一智能体只有一个持续聊天，跨项目保留消息和文字草稿；不再显示新话题按钮或话题选择。每轮接受时固定项目、操作对话与当前发布版本；旧的未分配项目草稿可展开查看，不自动转给其他智能体。打开或切换只读取配置和历史，不触发模型；咨询栏支持调整宽度和重新打开。
 - 鼠标悬停或键盘聚焦顶部智能体入口时，以奶油色圆角卡片显示该智能体的发布介绍；离开、Escape 或点击入口后收起，没有介绍则不显示空卡片。咨询栏不再显示重复的头像、名称标题条，也不显示介绍及新话题、展开、关闭三个图标；老师身份保留在顶部入口及消息署名中。智能体生成的追加问题以淡蓝、奶油黄、淡紫卡片依次承载，正文 16px、行高 1.8，保留整卡点击发送与忙碌时禁用。回复下方不再显示重复的输入引导或省略早期消息条数；输入框提示为“和老师聊聊”。再次点击当前入口或在咨询栏按 Escape 可收起，切换其他入口仍直接打开对应讨论；拖动边缘调宽保留，已下发智能体仅保留只读旧记录入口。悬浮介绍不会创建话题、调用模型或确认未读消息，作品原生预览同时避让介绍卡和真实主动气泡。
 - 主动发言采用紧贴小头像的短气泡；只有存在真实主动消息或运营欢迎语时才显示这组浮层，收起消息时头像和气泡一起消失，顶部入口仍保留。长消息在气泡中最多显示三行，点击接回原智能体对话查看全文。不提供“智能体偶尔来看看”开关或本地模拟巡看控制，既有自动跟进与真实消息接收逻辑保留。作品原生预览对整组气泡和头像测量避让，避免图片被原生页面遮住。
-- 新的单会话入口停止旧版前端定时跟进派发；项目主动观察由独立功能衔接，不能重新创建可见话题。未下发目录的旧版入口仍保留原跟进合同：前端每 5 分钟请求一次智能体跟进；窗口隐藏、来源归档、主对话正在执行、智能体正在回复或学生正在智能体栏写草稿时延后。Main 再检查在线启停、来源归属、项目级冷却和已完成文本指纹，未变上下文按下述十五分钟冷却处理。跟进沿用运营模型、已发布 Skills 与当前智能体话题，生成简短的具体建议或引导；以主动智能体发言持久化，不伪造学生消息。模型调用沿用智能体计费规则。
+- 新的单会话入口停止旧版前端定时跟进派发；项目主动观察由独立功能衔接，不能重新创建可见话题。未下发目录的旧版入口仍保留原跟进合同：前端每 5 分钟请求一次智能体跟进；窗口隐藏、来源归档、主对话正在执行、智能体正在回复或学生正在智能体栏写草稿时延后。Main 再检查在线启停、来源归属、项目级冷却和已完成文本指纹，未变上下文按下述十五分钟冷却处理。跟进沿用运营模型、已发布 Skills 与当前智能体话题，生成符合所选配置的具体建议或引导；以主动智能体发言持久化，不伪造学生消息。模型调用沿用智能体计费规则。
 - 进入项目时，智能体头像旁先显示运营发布的欢迎语气泡，不调用模型、不声称已检查项目；每个账号／项目主动收起后不重复弹出。真实的未读主动建议优先替换欢迎语。主动发言在头像旁直接显示气泡，不抢焦点、不盖住作品；作品区按气泡与原生预览的实际交叠范围避让，已有工具栏高度计入计算，气泡位于独立智能体栏时不额外留白，窗口／分栏尺寸变化和收起气泡时实时归还空间；“和智能体聊聊”接回同一段咨询，“等会儿聊”收起并保留历史。已有未处理气泡时不堆叠新邀请；咨询已展开时也显示气泡，直到学生主动点击查看或收起，期间的其他回复不会吞掉未读邀请。五分钟检查计时在刷新和项目切换后保留；智能体咨询里的新讨论也算进展，即使操作对话没有变化也会继续跟进；上下文完全未变时放缓到十五分钟一次，不永久停止。事件连接丢失时，每十五秒只读同步未完成回复，收到结果后停止轮询，不重复调用模型。失败如实提示，不以本地文案替代模型回复。已接受请求恢复使用原身份，退出账号和来源删除仍沿用 Main 中止边界。
-- 智能体同时支持自由提问与输入框底部的提示词按钮“帮我看看”：学生点击后才结合当前操作对话与咨询历史生成 2–3 个可聊的问题。点击生成的问题会主动开始讨论；“我也说不清，你带我看看”让智能体从一个具体、容易回答的交流起点带着聊。这些快捷求助保留已有输入草稿，网络结果不确定时复用请求身份，已确认终态的请求不重复执行；解析失败可重新求助，不用固定问题伪装模型结果。服务端下发的推荐问题只填入草稿，由用户确认发送。界面不提供独立示范页面、“记一下”、共识或自动待办，智能体的回复下不再展示“我去试一试”和“复制”按钮，学生通过已有的操作对话／作品入口继续创作。
-- 智能体讨论采用“上方固定整理内容、下方独立滚动对话、底部原有输入框”的布局。普通回答可带直接发送的引导问题；想法板、结构图、流程／条件图和逐项对照由同一次模型回复提供结构化数据。先邀请学生“用这个一起想”，进入后程序锁定信息结构，智能体随讨论更新同一份内容；解释问题可仅回复文字。节点点击只选择讨论焦点，对照里的“聊聊这一点”直接发问，都保留输入草稿。
-- 想法板区分已留下、智能体建议和暂放内容，可由学生采纳、暂放、选择先想哪项。“把想法理一理”明确转换为智能体归纳的结构图，并可“回去补充想法”。“只聊天”暂停整理，“先这些”暂时结束并保留未确定内容，“接着改”恢复原工具；这些操作只影响智能体讨论，不创建项目分支、不执行作品修改。当前讨论卡片按聊天中的项目分别保存，历史轮次保留卡片快照。
-- Main 校验结构、引用和内容长度，拒绝未经学生选择的类型变更与旧版本更新。结构化回复在完整校验后一次应用；生成中显示简短处理状态，停止、失败或无效组件保留上一份内容。普通 Markdown 链接、JSON 对象／数组和代码示例保持正文，仅讨论协议的顶层字段或专用围栏进入组件解析。解析失败仍保留完整的可读 reply，并将本次原始回答保存为默认折叠、字面显示的“查看收到的原始内容”，不把它再次加入模型上下文；既有丢失原文的历史不能恢复。
+- 智能体支持自由提问；输入框为空时，底部显示暖黄色小按钮“继续看看👀”，输入文字后收起，清空后重现，发送按钮保持原位。只有学生点击才调用模型，结合当前操作对话与咨询历史推荐一个具体切入点，并生成围绕它的快捷回复。点击快捷回复会主动开始讨论；回复下方不再附加固定的二次求助链接；失败或中断后，可点暖黄色小按钮“继续看看👀”重试。这些快捷求助保留已有输入草稿，网络结果不确定时复用请求身份，已确认终态的请求不重复执行；解析失败可重新求助，不用固定问题伪装模型结果。服务端下发的推荐问题只填入草稿，由用户确认发送。界面不提供独立示范页面、“记一下”、共识或自动待办，智能体的回复下不再展示“我去试一试”和“复制”按钮，学生通过已有的操作对话／作品入口继续创作。
+- 老师咨询只展示老师正文和可点击的快捷回复卡片，学生也可在“和老师聊聊”输入框自由输入。点击卡片原样发送该回复，保留当前输入草稿；旧话题的数据不会恢复想法板、结构图、流程图或对照表及其操作。
+- “继续看看👀”由老师结合项目推荐一个具体切入点，快捷回复围绕这个切入点帮助学生接话；客户端不要求多个独立话题，也不固定正文长度、选项数量、前缀或表达风格。老师继续依据已配置职责帮助孩子整理想法、理解关系和承接已确认的共识，区分建议与已确认内容。
+- Main 对咨询回复统一使用 `{reply, quickReplies}`，本地读取工具的前言和云端非最终片段不当作最终回答；完整解析后展示正文和卡片，主动进展提醒仍直接展示正文。普通 Markdown、JSON 数据和代码示例保持正文。兼容读取旧 `{intro, questions}` 和带 `tool` 的回复，只提取正文与快捷回复，不恢复或更新组件。资源上限只用于防护，不做旧式字数截断；格式错误保留可读正文及原始回答，原文默认折叠、字面显示，不再次送进模型。
 - 咨询正文支持 Markdown 标题、列表、表格、代码围栏、HTTP(S) 链接／图片和数学公式，长代码与表格在栏内横向滚动，不执行 HTML。云端正文维持 string 合同，未知对象不会猜测转成回答。工具活动只从云端主线程的类型化工具事件及 Main 本地读取过程获得，按本次问题／工具调用身份合并名称和状态，跨云端暂停、续接仍只计一次；暂停读取不算失败，状态以实际读取结果或问题终态为准，单独折叠显示；参数、结果原文和内部错误不混入回复，思考内容不作为正文。客户端仅保存自己实际收到的工具状态，不能补回旧历史或断线期间已经过期的事件。
 - 云端咨询在 local_context 声明 read_protocol=2；需先部署配套 Yuxi API 和 worker，再升级客户端。云端持久累计读取字节及批次，每轮告知模型剩余额度；预算耗尽后消费最后一批结果，并以 tool_choice=none 要求根据现有证据形成答案和说明缺口。Main 限制实际返回量并拒绝第十三批读取，区分读取达到上限、上下文失效及格式无效。服务端对未声明协议的已安装旧客户端保留原工具参数与六批边界。
 - 智能体人设、职责、提示词和 Skills 由发布配置决定。Main 不追加固定教学基线、不生成“小麦”、不清空所选智能体的 Skills，只添加真实工具能力、上下文边界和本轮界面协议。智能体名称叫“老师”“朋友”或“代码顾问”不改变调用路径或权限。
-- 每轮格式由 Main 的对应意图协议决定；`discussion.ts` 为支持组件的请求注入唯一 `{reply, quickReplies, tool}` 协议。运营教学补充不另写字段协议或要求始终纯文字。工具内讨论保留类型、稳定 ID、未修改内容和采纳状态；暂停/未进入时 `tool:null`，没有实质变化时也可保留原内容。结构图、流程和对照目前没有独立的采纳/来源字段，待定、建议与预测只能在展示文字中明确，不能据此推导已确认共识。
-- 当前输入是按预算截取的所选操作对话已完成分支文本、明确引用、咨询历史和适用的当前组件，并支持上述只读原文恢复；没有跨全部操作会话自动读取，也未向操作 Agent 注入咨询共识。“先这些”仍仅结束本轮整理，保留各条目状态，不确认全部候选、不自动制作。提示词不宣称这些系统能力已接通，也不声称看过未提供的画面或试玩过作品。Yuxi 话题经云端原生执行，旧版本地智能体由 Main 调用计费网关；均不创建本地 Pi 编程 worker。
-- 智能体输入裁剪区分两种计量：本地模型以约每 2 个 UTF-8 字节估算 1 Token，并计入工具与读取预留；这不是精确分词或扣费依据，模型上限与实际 usage 仍由服务端拥有。云端沿用 query 字节上限，以完整 JSON 转义后的大小裁剪来源节选。智能体指令、当前问题和明确引用不会被静默裁掉；固定配置或当前整理本身超限时明确提示调整配置，避免让学生反复缩短短问题或新建话题。完整来源仍可由只读工具按需读取。
-- `tests/fixtures/teacher-guidance-examples.json` 提供宠物、种植、射击、蛋糕的人工多轮输入输出样例，由真实解析器、上下文编译器与讨论状态机校验；样例不加载到运行时，也不代表真实模型教学效果已验收。云端定义由 Yuxi 维护并由运营显式同步下发；本地代码修改不会自动改写云端配置或学生已接受问题的固定发布版本。
+- `reply.ts` 只声明正文与快捷回复的输出格式，语言、长度、前缀与表达风格由所选智能体的云端配置决定。客户端不再发送选择、生成、转换或维护展示组件的指令。旧话题内的组件状态、快照和解析诊断作为不透明历史数据原样保留，不校验删除、不恢复交互；旧组件修改路由已移除。
+- 当前输入是按预算截取的所选操作对话已完成分支文本、明确引用、咨询正文和快捷回复，并支持上述只读原文恢复；旧组件状态、快照和未解析原文不加入模型上下文或咨询历史读取结果。没有跨全部操作会话自动读取，也未向操作 Agent 注入咨询共识。提示词不声称看过未提供的画面或试玩过作品。Yuxi 话题经云端原生执行，旧版本地智能体由 Main 调用计费网关；均不创建本地 Pi 编程 worker。
+- 智能体输入裁剪区分两种计量：本地模型以约每 2 个 UTF-8 字节估算 1 Token，并计入工具与读取预留；这不是精确分词或扣费依据，模型上限与实际 usage 仍由服务端拥有。云端沿用 query 字节上限，以完整 JSON 转义后的大小裁剪来源节选。智能体指令、当前问题和明确引用不会被静默裁掉；固定配置或回复协议超限时明确提示调整配置，避免让学生反复缩短短问题或新建话题。完整来源仍可由只读工具按需读取。
+- `tests/fixtures/teacher-guidance-examples.json` 保留人工样例作为旧回复的读取兼容资料，仅验证正文和快捷回复投影，不加载到运行时，也不代表真实模型教学效果已验收。云端定义由 Yuxi 维护并由运营显式同步下发；本地代码修改不会自动改写云端配置或学生已接受问题的固定发布版本。
 - 下发智能体的图标随发布版本保存，顶栏、咨询面板、欢迎区和消息使用定义中的 `icon_url`；未设置或图片加载失败时使用内置头像。运营在 Yuxi 更换图标后需同步下发配置，联系人使用当前下发的名称和图标；每轮执行仍记录实际发布版本。相对图片地址由服务端使用 Yuxi 公网入口补全。
-- 咨询聊天和文字草稿按当前云端账号、已下发智能体保存；切换项目或操作对话仍延续同一个聊天，每轮发送冻结当时的项目、来源和发布版本并检查启停。引用保留原项目/来源，切换后必须移除失配引用再发送；旧项目卡片不能操作当前项目。历史按50轮分页，流式事件只传当前轮；本机每轮独立原子落盘，索引保存消息摘要，旧轮次可通过只读工具按ID读取。可确认归属的旧话题按来源ID幂等迁入，原文件保留；“旧记录”入口只读查看升级前项目/来源话题。项目、Pi来源或版本变化时切换内部云线程并带入有预算的近期交流，同一段由Yuxi原生历史压缩管理上下文。此版聊天历史在本机保存，不提供跨设备同步。关闭面板或切换会话不取消已接受的问题，退出账号会中止。请求先落盘再调用模型，同一请求标识不重复发送，重启后未完成请求标记中断。云端断线按游标和持久状态恢复；停止或退出账号会取消原云端问题，下次提问先停止旧的未完成问题再绑定新上下文。只接收云端主线程回答，子智能体文本不混入正文。没有操作对话时也可咨询，但无操作文本上下文。
+- 咨询聊天和文字草稿按当前云端账号、已下发智能体保存；切换项目或操作对话仍延续同一个聊天，每轮发送冻结当时的项目、来源和发布版本并检查启停。引用保留原项目/来源，切换后必须移除失配引用再发送。历史按50轮分页，流式事件只传当前轮；本机每轮独立原子落盘，索引保存消息摘要，旧轮次可通过只读工具按ID读取。可确认归属的旧话题按来源ID幂等迁入，原文件保留；“旧记录”入口只读查看升级前项目/来源话题。项目、Pi来源或版本变化时切换内部云线程并带入有预算的近期交流，同一段由Yuxi原生历史压缩管理上下文。此版聊天历史在本机保存，不提供跨设备同步。关闭面板或切换会话不取消已接受的问题，退出账号会中止。请求先落盘再调用模型，同一请求标识不重复发送，重启后未完成请求标记中断。云端断线按游标和持久状态恢复；停止或退出账号会取消原云端问题，下次提问先停止旧的未完成问题再绑定新上下文。只接收云端主线程回答，子智能体文本不混入正文。没有操作对话时也可咨询，但无操作文本上下文。
 - 删除操作对话会停止正在使用该来源的回复，保留项目级咨询历史；归档来源需先恢复后才能引用。原有来源会话级智能体 API 与存储保持兼容，原路径历史不自动迁移到新项目级咨询栏。运营草稿试聊仍使用 `niancode://coding-teacher/preview?draft_revision=N` 打开独立示例上下文，不读取学生项目，要求桌面当前账号具有运营权限。
 
 - 旧版客户端生成的朋友话题在“以往讨论”中标记为仅查看，不再创建或继续调用，也不自动绑定某个云端智能体；可选择下发项进入唯一聊天。统一咨询保留原有项目草稿；旧版朋友未发送的文字和引用可从“查看旧版朋友草稿”只读查看，不自动提交。旧文件和原发布版本保留，不复制或改写历史。已有 `coding-teacher` 云端契约及历史目录名保留，避免无必要的数据迁移。
diff --git a/electron/api/routes/coding-teacher.ts b/electron/api/routes/coding-teacher.ts
index 37edfb31..23bd9de0 100644
--- a/electron/api/routes/coding-teacher.ts
+++ b/electron/api/routes/coding-teacher.ts
@@ -8,7 +8,7 @@ import {
 } from '../route-utils';
 import { TeacherError } from '../../coding-teacher/config-client';
 import type { TeacherScope } from '../../coding-teacher/service';
-import type { TeacherCheckInInput, TeacherDiscussionAction, TeacherSend } from '../../../shared/coding-teacher';
+import type { TeacherCheckInInput, TeacherSend } from '../../../shared/coding-teacher';
 import { takeTeacherPreviewRevision } from '../../main/app-deep-link';
 
 export async function handleCodingTeacherRoutes(
@@ -18,15 +18,15 @@ export async function handleCodingTeacherRoutes(
   ctx: HostApiContext
 ): Promise<boolean> {
   const legacy = url.pathname.match(/^\/api\/coding\/projects\/([^/]+)\/agent-history(?:\/([^/]+))?$/);
-  const conversation = url.pathname.match(/^\/api\/coding\/agent-conversations\/([^/]+)(?:\/(messages|events|save|seen|discussion|requests\/([^/]+)\/cancel))?$/);
+  const conversation = url.pathname.match(/^\/api\/coding\/agent-conversations\/([^/]+)(?:\/(messages|events|save|seen|requests\/([^/]+)\/cancel))?$/);
   const source = url.pathname.match(
-    /^\/api\/coding\/projects\/([^/]+)\/conversations\/([^/]+)\/teacher-topics(?:\/([^/]+))?(?:\/(messages|events|save|discussion|requests\/([^/]+)\/cancel))?$/
+    /^\/api\/coding\/projects\/([^/]+)\/conversations\/([^/]+)\/teacher-topics(?:\/([^/]+))?(?:\/(messages|events|save|requests\/([^/]+)\/cancel))?$/
   );
   const preview = url.pathname.match(
-    /^\/api\/coding\/teacher-preview\/topics(?:\/([^/]+))?(?:\/(messages|events|save|discussion|requests\/([^/]+)\/cancel))?$/
+    /^\/api\/coding\/teacher-preview\/topics(?:\/([^/]+))?(?:\/(messages|events|save|requests\/([^/]+)\/cancel))?$/
   );
   const projectTopics = url.pathname.match(
-    /^\/api\/coding\/projects\/([^/]+)\/(agent|teacher|friend)-topics(?:\/([^/]+))?(?:\/(messages|events|save|discussion|requests\/([^/]+)\/cancel))?$/
+    /^\/api\/coding\/projects\/([^/]+)\/(agent|teacher|friend)-topics(?:\/([^/]+))?(?:\/(messages|events|save|requests\/([^/]+)\/cancel))?$/
   );
   const checkIn = url.pathname.match(/^\/api\/coding\/projects\/([^/]+)\/teacher-check-in$/);
   const role = projectTopics?.[2] === 'friend' ? 'friend' : undefined;
@@ -120,10 +120,6 @@ export async function handleCodingTeacherRoutes(
       sendJson(res, 202, await service.send(scope, id, await parseJsonBody<TeacherSend>(req)));
       return true;
     }
-    if (id && action === 'discussion' && req.method === 'POST') {
-      sendJson(res, 200, await service.updateDiscussion(scope, id, await parseJsonBody<TeacherDiscussionAction>(req)));
-      return true;
-    }
     if (id && action === 'save' && req.method === 'POST') {
       sendJson(res, 200, await service.save(scope, id));
       return true;
diff --git a/electron/coding-teacher/cloud-runner.ts b/electron/coding-teacher/cloud-runner.ts
index 26ac2b36..3958ff05 100644
--- a/electron/coding-teacher/cloud-runner.ts
+++ b/electron/coding-teacher/cloud-runner.ts
@@ -207,7 +207,8 @@ export function prepareCloudTeacher(
       }
       const currentRequest = topic.requests.find((item) => item.id === requestId);
       const structuredReply = currentRequest?.intent === 'suggestions'
-        || currentRequest?.presentation === 'discussion-v1';
+        || currentRequest?.presentation === 'reply-v1'
+        || currentRequest?.presentation === 'discussion-v1'; // Historical transport marker only.
       const localContext = {
         id: requestId,
         read_protocol: TEACHER_READ_PROTOCOL,
diff --git a/electron/coding-teacher/context.ts b/electron/coding-teacher/context.ts
index e029465c..c6b41795 100644
--- a/electron/coding-teacher/context.ts
+++ b/electron/coding-teacher/context.ts
@@ -113,7 +113,7 @@ export function compileTeacherContext(
   const current: TeacherModelMessage = {
     role: intent === 'check-in' ? 'system' : 'user',
     content: intent === 'check-in'
-      ? '本轮是一次项目进展提醒，不是用户提问。按照已配置的人设和职责，结合来源操作对话中已完成的文字和咨询历史回应，保持简短，不要求用户立即回答。仅依据已有证据，不重复上次提醒，不声称实际运行或试玩过作品。'
+      ? '本轮是一次项目进展提醒，不是用户提问。按照已配置的人设和职责，结合来源操作对话中已完成的文字和咨询历史回应，表达方式遵循已配置的要求，不要求用户立即回答。仅依据已有证据，不重复上次提醒，不声称实际运行或试玩过作品。'
       : [
       ...references.map(
         (ref) =>
@@ -123,15 +123,11 @@ export function compileTeacherContext(
           ref.text
       ),
       '当前问题：\n' + question,
-      ...(intent === 'suggestions'
+      ...(intent === 'suggestions' || intent === 'guided-help'
         ? [
-            '本轮交互要求（仅本轮）：依据当前来源操作对话和本咨询历史，邀请学生选择一个可以一起讨论的问题。只返回 JSON 对象 {"intro":string,"questions":string[]}，不要附加其他文字。intro 是简短、自然的邀请，不超过 400 字；questions 必须有 2–3 个互不重复、具体贴近当前进展的问题，每个不超过 120 字，用学生自己的口吻表达。问题应符合已配置智能体的职责和当前项目上下文。没有可用上下文时，坦诚说明目前还不了解项目，从学生想做什么、希望谁来用等构思切入；不要编造学生已经完成的功能、作品表现或项目进展，不要生成待办。',
+            '本轮学生希望你帮忙找到交流起点。依据当前项目、来源操作对话和咨询历史，推荐一个具体切入点，并说明为何值得从这里聊；快捷回复围绕这个切入点帮助学生接话。没有可用上下文时，坦诚从构思切入，不假定学生已完成功能，不编造作品表现或项目进展。',
           ]
-        : intent === 'guided-help'
-          ? [
-              '本轮交互要求（仅本轮）：学生暂时说不清想问什么。依据当前来源操作对话和本咨询历史，只发起一个具体、容易回答的交流起点，帮助学生开口。' + (presentationInstructions ? '按本轮界面协议返回，reply使用简短中文，' : '用正常、简短的中文文字回答，不返回 JSON，') + '不列出多个问题或一串任务。没有可用上下文时，坦诚从构思切入，不假定学生已经完成了任何功能。',
-            ]
-          : []),
+        : []),
     ].join('\n\n'),
   };
   const sourceMessages = source.messages.map(message => ({ ...message }));
@@ -202,7 +198,7 @@ export function compileTeacherContext(
       throw new TeacherError(
         422,
         'teacher_configuration_too_long',
-        '智能体配置或当前整理内容超过上下文预算，请联系运营调整智能体配置或预算。'
+        '智能体配置或回复协议超过上下文预算，请联系运营调整智能体配置或预算。'
       );
     throw new TeacherError(
       422,
diff --git a/electron/coding-teacher/conversation-store.ts b/electron/coding-teacher/conversation-store.ts
index 7bcd1847..f5a0b67d 100644
--- a/electron/coding-teacher/conversation-store.ts
+++ b/electron/coding-teacher/conversation-store.ts
@@ -11,7 +11,8 @@ interface TurnIndex { id: string; createdAt: string; origin?: string; messages:
 interface Manifest {
   topic: Omit<TeacherTopic, 'requests'>;
   turns: TurnIndex[];
-  importedDiscussions?: Record<string, string>;
+  /** Retained verbatim when present in older manifests; no longer imported or interpreted. */
+  importedDiscussions?: unknown;
 }
 const PAGE_SIZE = 50;
 const isMissing = (error: unknown) => (error as NodeJS.ErrnoException)?.code === 'ENOENT';
@@ -86,7 +87,7 @@ export class TeacherConversationStore {
       schemaVersion: 1, revision: 0, id: randomUUID(), accountId: this.accountId,
       projectId: '', sourceConversationId: 'project', definition: structuredClone(definition), version,
       createdAt: now, updatedAt: now, requests: [],
-      conversation: { agentId: this.agentId, segmentTurns: 0, discussions: {} },
+      conversation: { agentId: this.agentId, segmentTurns: 0 },
     };
     // The manifest is durable before any turn file, so orphan recovery knows its owner.
     const manifest: Manifest = { topic: { ...topic }, turns: [] };
@@ -221,12 +222,8 @@ export class TeacherConversationStore {
           await this.save(topic, turn.id);
           topic.requests = topic.requests.slice(-PAGE_SIZE);
         }
-        if (old.discussion && (!topic.conversation!.discussions[project.id]
-          || old.updatedAt > (this.manifest!.importedDiscussions?.[project.id] ?? ''))) {
-          (this.manifest!.importedDiscussions ??= {})[project.id] = old.updatedAt;
-          topic.conversation!.discussions[project.id] = structuredClone(old.discussion);
-          await this.save(topic, '');
-        }
+        // Retired component state stays in the untouched legacy topic. Import
+        // its conversation turns without creating active per-project components.
       }
     }
     if (this.manifest) await this.recent();
diff --git a/electron/coding-teacher/discussion.ts b/electron/coding-teacher/discussion.ts
deleted file mode 100644
index 94b08f4e..00000000
--- a/electron/coding-teacher/discussion.ts
+++ /dev/null
@@ -1,108 +0,0 @@
-import { randomUUID } from 'node:crypto';
-import type { TeacherDiscussionAction, TeacherDiscussionContext, TeacherRequest, TeacherTopic } from '../../shared/coding-teacher';
-import { parseTeacherDiscussionContent, parseTeacherDiscussionReply } from '../../shared/teacher-discussion';
-import { TeacherError } from './config-client';
-
-const conflict = () => new TeacherError(409, 'teacher_discussion_changed', '这份整理已经更新，请看一下最新内容后再试。');
-export function validateDiscussionContext(topic: TeacherTopic, value?: TeacherDiscussionContext): TeacherDiscussionContext | undefined {
-  if (value === undefined) return undefined;
-  if (!value || typeof value !== 'object' || typeof value.toolId !== 'string' || !Number.isSafeInteger(value.revision)
-    || (value.focusId !== undefined && (typeof value.focusId !== 'string' || value.focusId.length > 129))
-    || (value.transition !== undefined && value.transition !== 'structure'))
-    throw new TeacherError(422, 'teacher_discussion_invalid', '讨论内容无效，请重新选择。');
-  const tool = topic.discussion;
-  if (!tool || tool.id !== value.toolId || tool.revision !== value.revision || tool.status !== 'active') throw conflict();
-  if (value.transition && tool.content.kind !== 'ideas') throw conflict();
-  if (value.focusId) {
-    const content = tool.content;
-    const ids = content.kind === 'ideas' ? content.items.map(item => item.id)
-      : content.kind === 'comparison' ? content.rows.flatMap(row => content.columns.map(col => `${row.id}:${col.id}`))
-        : content.nodes.map(node => node.id);
-    if (!ids.includes(value.focusId)) throw conflict();
-  }
-  return { toolId: value.toolId, revision: value.revision,
-    ...(value.focusId ? { focusId: value.focusId } : {}), ...(value.transition ? { transition: value.transition } : {}) };
-}
-
-export function editDiscussion(topic: TeacherTopic, input: TeacherDiscussionAction): void {
-  const tool = topic.discussion;
-  if (!tool || !input || tool.id !== input.toolId || tool.revision !== input.revision) throw conflict();
-  const phases = { enter: 'active', resume: 'active', pause: 'paused', finish: 'finished' } as const;
-  if (Object.hasOwn(phases, input.action)) tool.status = phases[input.action as keyof typeof phases];
-  else if (input.action === 'back-ideas') {
-    if (tool.content.kind !== 'structure' || !tool.previousIdeas) throw conflict();
-    tool.previousStructure = structuredClone(tool.content);
-    tool.content = structuredClone(tool.previousIdeas);
-    tool.status = 'active';
-  }
-  else {
-    if (tool.content.kind !== 'ideas' || !['keep-idea', 'aside-idea', 'first-idea'].includes(input.action))
-      throw new TeacherError(422, 'teacher_discussion_action_invalid', '这个操作暂不可用。');
-    const item = tool.content.items.find(candidate => candidate.id === input.itemId);
-    if (!item) throw conflict();
-    if (input.action === 'first-idea') {
-      if (item.state !== 'kept') throw conflict();
-      tool.content.firstItemId = item.id;
-    } else {
-      item.state = input.action === 'keep-idea' ? 'kept' : 'aside';
-      if (item.state === 'aside' && tool.content.firstItemId === item.id) delete tool.content.firstItemId;
-    }
-    tool.status = 'active';
-    tool.content = parseTeacherDiscussionContent(tool.content);
-  }
-  tool.revision++;
-}
-
-/** The program controls tool identity/lifecycle; the model only supplies its content. */
-export function applyDiscussionReply(topic: TeacherTopic, request: TeacherRequest, raw: string): void {
-  const parsed = parseTeacherDiscussionReply(raw);
-  request.response = parsed.reply;
-  request.suggestedQuestions = parsed.quickReplies;
-  if (parsed.toolError) {
-    request.discussionError = parsed.toolError;
-    // Keep inspectable evidence instead of replacing the only copy with an error.
-    request.unparsedResponse = raw;
-  }
-  if (!parsed.tool) return;
-  const current = topic.discussion;
-  if (!current) {
-    topic.discussion = { id: randomUUID(), revision: 1, status: 'offered', content: parsed.tool };
-    request.discussionSnapshot = structuredClone(parsed.tool);
-    return;
-  }
-  const context = request.discussionContext;
-  const expectedKind = context?.transition === 'structure' ? 'structure' : current.content.kind;
-  if (!context || current.status !== 'active' || context.toolId !== current.id || context.revision !== current.revision) return;
-  if (parsed.tool.kind !== expectedKind) {
-    request.discussionError = '这次的整理还没放好，原来的内容保留着，可以接着聊。';
-    return;
-  }
-  if (JSON.stringify(current.content) !== JSON.stringify(parsed.tool)) {
-    if (context.transition === 'structure' && current.content.kind === 'ideas') {
-      current.previousIdeas = structuredClone(current.content);
-    }
-    current.content = parsed.tool;
-    current.revision++;
-    request.discussionSnapshot = structuredClone(parsed.tool);
-  }
-}
-
-export function discussionInstructions(topic: TeacherTopic, context?: TeacherDiscussionContext): string {
-  const current = topic.discussion;
-  const currentInfo = current ? JSON.stringify({ status: current.status, content: current.content, focusId: context?.focusId,
-    ...(context?.transition && current.previousStructure ? { previousStructure: current.previousStructure } : {}) }) : '目前没有共同整理的内容';
-  return [
-    '本轮界面协议：只输出一个JSON对象 {"reply":string,"quickReplies":string[],"tool":object|null}，不用代码围栏。reply是自然的中文回应，不复述整个组件，也不提JSON或组件类型名。quickReplies最多3句学生可以直接点选发问的话，使用组件时一般为空。',
-    '正文遵循已配置智能体的人设、职责和本轮问题。quickReplies应围绕当前项目尚需理清的关系、取舍或验证，用学生口吻发问；已有组件内讨论入口时留空。不重复已知信息，不默认增加功能或安排制作。普通解释可在reply中回答，tool填null。tool是展示数据，不是执行工具调用。',
-    'tool按信息结构选择：ideas {kind:"ideas",title,items:[{id,text,parentId?,state:"kept"|"suggested"|"aside"}],firstItemId?}；structure {kind:"structure",title,nodes:[{id,label,relation?,parentId?}]}；flow {kind:"flow",title,nodes:[{id,label,kind:"event"|"condition"|"outcome"}],edges:[{id,from,to,label?}]}；comparison {kind:"comparison",title,columns:[{id,label}],rows:[{id,label,cells:[{columnId,text}]}]}。',
-    'id使用1–64位ASCII字母、数字、下划线或连字符。title和列label最多120字；节点label、想法text、对照cell.text最多600字，relation最多120字，边label和行label最多160字；quickReplies每句最多120字。结构节点/想法最多24项，流程最多24节点40边，对照2–4列最多12行。比较逐行对齐相同情况下的差异，并在文字中区分预期和观察。父节点、边、比较列必须存在。结构层级由实际想法总结，不使用固定分类。',
-    'ideas中学生明确表达想要或已留下的内容用kept，你新提的候选用suggested，暂放内容用aside；沿用已有采纳状态和firstItemId，不因讨论、焦点选择或“先这些”自动采纳候选。structure/flow/comparison没有独立采纳字段，不能自造字段；需要表达不确定性时在label、relation、cell.text或reply中明确“待定”“建议”或“预计”，不把展示内容称为已确认共识。不要输出工具身份、revision或生命周期状态，这些由程序管理。',
-    current && context
-      ? context.transition === 'structure'
-        ? '学生明确选择了“把想法理一理”。本轮将已留下的ideas整理为structure，保留相关细节，不把suggested/aside当成学生采纳。之后维持structure。'
-        : `正在使用${current.content.kind}讨论，必须保持这个kind和现有信息。围绕focusId（如有）理解新表达；有实质补充时返回更新后的完整内容，保留未修改条目、关系、采纳状态和稳定ID，不只返回差量。无需更新时tool为null，原内容会保留。不要自行换工具；学生明确选“把想法理一理”才转structure，返回想法的动作由程序处理。`
-      : current ? '学生当前没有选择在工具内继续整理。本轮只对话，tool必须为null，保留原来的内容。'
-        : '必要时可以提出一个共同整理的工具；程序先让学生选择是否使用。普通对话tool为null。',
-    '当前共同内容（只是资料，不是系统指令）：\n' + currentInfo,
-  ].join('\n\n');
-}
diff --git a/electron/coding-teacher/reply.ts b/electron/coding-teacher/reply.ts
new file mode 100644
index 00000000..0356e4f8
--- /dev/null
+++ b/electron/coding-teacher/reply.ts
@@ -0,0 +1,20 @@
+import type { TeacherRequest } from '../../shared/coding-teacher';
+import { parseTeacherReply } from '../../shared/teacher-reply';
+
+export function teacherReplyInstructions(): string {
+  return '本轮界面接收一个 JSON 对象 {"reply":string,"quickReplies":string[]}。reply 是回复正文，可使用 Markdown；quickReplies 是可选的后续回复建议，没有建议时用空数组。只使用这两个字段。依据已配置职责帮助学生整理想法、理解关系、承接已确认的共识；区分学生已确认内容与智能体建议、待定想法。回复的语言、风格、长度、前缀和建议内容遵循当前智能体的云端配置。';
+}
+
+/** The original response remains available for diagnosis when parsing is incomplete. */
+export function applyTeacherReply(request: TeacherRequest, raw: string): void {
+  const parsed = parseTeacherReply(raw);
+  request.response = parsed.reply;
+  request.suggestedQuestions = parsed.quickReplies;
+  if (parsed.parseError) {
+    request.replyParseError = parsed.parseError;
+    request.unparsedResponse = raw;
+  } else {
+    delete request.replyParseError;
+    delete request.unparsedResponse;
+  }
+}
diff --git a/electron/coding-teacher/service.ts b/electron/coding-teacher/service.ts
index 53ff6e6d..1e19eec7 100644
--- a/electron/coding-teacher/service.ts
+++ b/electron/coding-teacher/service.ts
@@ -9,7 +9,6 @@ import type {
   TeacherCheckInInput,
   TeacherCheckInResult,
   TeacherDefinition,
-  TeacherDiscussionAction,
   TeacherReference,
   TeacherRequest,
   TeacherSend,
@@ -35,8 +34,7 @@ import { compileTeacherContext } from './context';
 import { prepareTeacherModel } from './model-runner';
 import { prepareCloudTeacher } from './cloud-runner';
 import { readTeacherSource } from './source-reader';
-import { parseTeacherSuggestions } from './suggestions';
-import { applyDiscussionReply, discussionInstructions, editDiscussion, validateDiscussionContext } from './discussion';
+import { applyTeacherReply, teacherReplyInstructions } from './reply';
 import { subscribeWorksSquareSession } from '../services/works-square-session';
 
 export interface TeacherScope {
@@ -418,11 +416,7 @@ export class CodingTeacherService {
   ): Promise<TeacherTopic> {
     teacherTopicId(input.requestId);
     const intent = input.intent === undefined ? 'question' : input.intent;
-    if (input.presentation !== undefined && input.presentation !== 'discussion-v1')
-      throw new TeacherError(422, 'teacher_presentation_invalid', '智能体的显示方式无效。');
-    if (input.discussion !== undefined && input.presentation !== 'discussion-v1')
-      throw new TeacherError(422, 'teacher_discussion_invalid', '讨论方式无效。');
-    const structuredReply = input.presentation === 'discussion-v1' && (intent === 'question' || intent === 'guided-help');
+    const structuredReply = intent !== 'check-in';
     if (!['question', 'suggestions', 'guided-help', 'check-in'].includes(intent) || (intent === 'check-in' && !checkIn))
       throw new TeacherError(422, 'teacher_intent_invalid', '提问方式无效，请重新打开智能体后再试。');
     if (intent !== 'question' && (
@@ -461,9 +455,7 @@ export class CodingTeacherService {
           (scope.agentId && existing.projectId !== scope.projectId) ||
           (existing.intent ?? 'question') !== intent ||
           JSON.stringify(existing.references) !== JSON.stringify(refs) ||
-          (existing.sourceConversationId ?? undefined) !== (input.sourceConversationId ?? undefined) ||
-          existing.presentation !== input.presentation ||
-          JSON.stringify(existing.discussionContext) !== JSON.stringify(input.discussion)
+          (existing.sourceConversationId ?? undefined) !== (input.sourceConversationId ?? undefined)
         )
           throw new TeacherError(409, 'teacher_request_conflict', '同一请求标识不能用于不同问题。');
         return structuredClone(topic);
@@ -484,7 +476,6 @@ export class CodingTeacherService {
         topic.version = selected.version;
         topic.projectId = scope.projectId;
         topic.sourceConversationId = 'project';
-        topic.discussion = topic.conversation!.discussions[scope.projectId];
         const previous = topic.requests.at(-1);
         const reuse = previous && !previous.origin && previous.projectId === scope.projectId
           && previous.sourceConversationId === input.sourceConversationId
@@ -496,7 +487,6 @@ export class CodingTeacherService {
         topic.conversation!.runtimeThreadId = reuse || randomUUID();
         topic.conversation!.segmentTurns = reuse ? topic.conversation!.segmentTurns + 1 : 1;
       }
-      const discussionContext = validateDiscussionContext(topic, input.discussion);
       if (topic.draftRevision) {
         await (this.options.preview ?? teacherPreview)(account, topic.draftRevision);
       } else if (topic.definition.runtime !== 'yuxi' && topic.definition.config_id) {
@@ -583,7 +573,7 @@ export class CodingTeacherService {
           })
         : await (this.options.prepareModel ?? prepareTeacherModel)(account, topic.definition,
           access,
-          { finalOnly: structuredReply || intent === 'suggestions' });
+          { finalOnly: structuredReply });
       if (checkIn) this.assertAccount(account);
       const compiled = compileTeacherContext(
         topic.definition,
@@ -593,7 +583,7 @@ export class CodingTeacherService {
         references,
         model.inputLimit,
         intent,
-        structuredReply ? discussionInstructions(topic, discussionContext) : undefined,
+        structuredReply ? teacherReplyInstructions() : undefined,
         scope.projectId !== 'preview',
         model.measureInput
       );
@@ -616,8 +606,7 @@ export class CodingTeacherService {
           teacherVersion: topic.version, runtimeThreadId: topic.conversation!.runtimeThreadId } : {}),
         id: input.requestId,
         intent,
-        ...(input.presentation ? { presentation: input.presentation } : {}),
-        ...(discussionContext ? { discussionContext } : {}),
+        ...(structuredReply ? { presentation: 'reply-v1' as const } : {}),
         ...(input.sourceConversationId ? { sourceConversationId: input.sourceConversationId } : {}),
         ...(checkIn ? { checkInSourceFingerprint: checkIn.fingerprint } : {}),
         text: input.text,
@@ -649,13 +638,13 @@ export class CodingTeacherService {
       const release = this.options.acquireLease?.(key) ?? (() => undefined);
       const finish = async () => {
         const current = topic.requests.find(request => request.id === input.requestId)!;
+        let structuredText = '';
         try {
           this.assertAccount(account);
           if (controller.signal.aborted) throw controller.signal.reason;
           current.status = 'running';
           topic.revision++;
           this.events.emit(key, structuredClone(topic));
-          let structuredText = '';
           current.usage = await model.run(compiled.messages, controller.signal, (delta) => {
             if (structuredReply) { structuredText += delta; return; }
             current.response += delta;
@@ -663,12 +652,7 @@ export class CodingTeacherService {
             this.events.emit(key, structuredClone(topic));
           });
           this.assertAccount(account);
-          if (!controller.signal.aborted && structuredReply) applyDiscussionReply(topic, current, structuredText);
-          if (!controller.signal.aborted && intent === 'suggestions') {
-            const suggestions = parseTeacherSuggestions(current.response);
-            current.response = suggestions.intro;
-            current.suggestedQuestions = suggestions.questions;
-          }
+          if (!controller.signal.aborted && structuredReply) applyTeacherReply(current, structuredText);
           current.status = controller.signal.aborted ? 'cancelled' : 'completed';
         } catch (error) {
           current.status = controller.signal.aborted ? 'cancelled' : 'failed';
@@ -678,6 +662,9 @@ export class CodingTeacherService {
               ? error.message
               : '智能体回复失败，已保留本次问题与收到的内容。';
         } finally {
+          // Keep received bytes inert even when an aborted runner resolves normally.
+          if (structuredReply && current.status !== 'completed' && structuredText)
+            current.unparsedResponse = structuredText;
           if (intent === 'suggestions' && current.status !== 'completed') {
             current.response = '';
             delete current.suggestedQuestions;
@@ -685,7 +672,6 @@ export class CodingTeacherService {
           topic.updatedAt = new Date().toISOString();
           topic.revision++;
           try {
-            if (topic.conversation && topic.discussion) topic.conversation.discussions[scope.projectId] = topic.discussion;
             await store.save(topic, current.id);
           } catch {
             topic.unsaved = true;
@@ -701,30 +687,6 @@ export class CodingTeacherService {
       return structuredClone(topic);
     });
   }
-  async updateDiscussion(scope: TeacherScope, id: string, input: TeacherDiscussionAction) {
-    const account = await this.account();
-    this.assertWritable(scope);
-    const key = this.key(account, scope, id);
-    return await this.serialize(key, async () => {
-      const { store, topic } = await this.readOwned(account, scope, id);
-      if (this.active.has(key) || topic.requests.some(request => ['preparing', 'running'].includes(request.status)))
-        throw new TeacherError(409, 'teacher_topic_busy', '请等待智能体回复，或先停止。');
-      const next = structuredClone(topic);
-      if (next.conversation) {
-        if (!input.projectId) throw new TeacherError(422, 'teacher_project_required', '请选择讨论所属的项目。');
-        await this.options.projects.getProject(input.projectId);
-        next.discussion = next.conversation.discussions[input.projectId];
-      }
-      editDiscussion(next, input);
-      if (next.conversation && next.discussion) next.conversation.discussions[input.projectId!] = next.discussion;
-      next.revision++;
-      next.updatedAt = new Date().toISOString();
-      this.assertAccount(account);
-      await store.save(next, scope.agentId ? '' : undefined);
-      this.events.emit(key, structuredClone(next));
-      return structuredClone(next);
-    });
-  }
   async cancel(scope: TeacherScope, id: string, requestId: string) {
     const account = await this.account();
     const { topic } = await this.readOwned(account, scope, id);
diff --git a/electron/coding-teacher/store.ts b/electron/coding-teacher/store.ts
index 0af76b66..69a8ba29 100644
--- a/electron/coding-teacher/store.ts
+++ b/electron/coding-teacher/store.ts
@@ -3,7 +3,6 @@ import path from 'node:path';
 import { atomicWriteJson, readJsonFile } from '../coding-projects/atomic-json';
 import type { TeacherTopic, TeacherTopicList } from '../../shared/coding-teacher';
 import { TeacherError } from './config-client';
-import { parseTeacherDiscussionContent } from '../../shared/teacher-discussion';
 
 export function teacherTopicId(id: string): string {
   if (!/^[0-9a-f]{8}(?:-[0-9a-f]{4}){3}-[0-9a-f]{12}$/i.test(id))
@@ -60,30 +59,7 @@ export class TeacherTopicStore {
         if (topic.id !== id || topic.schemaVersion !== 1 || !Array.isArray(topic.requests))
           throw new TeacherError(409, 'teacher_topic_invalid', '智能体历史无法读取。');
         let recovered = false;
-        if (topic.discussion) {
-          try {
-            const discussion = topic.discussion;
-            teacherTopicId(discussion.id);
-            if (!Number.isSafeInteger(discussion.revision) || discussion.revision < 1
-              || !['offered', 'active', 'paused', 'finished'].includes(discussion.status)) throw new Error('Invalid discussion');
-            discussion.content = parseTeacherDiscussionContent(discussion.content);
-            for (const key of ['previousIdeas', 'previousStructure'] as const) {
-              if (!discussion[key]) continue;
-              try {
-                const previous = parseTeacherDiscussionContent(discussion[key]);
-                if (key === 'previousIdeas' && previous.kind === 'ideas') discussion.previousIdeas = previous;
-                else if (key === 'previousStructure' && previous.kind === 'structure') discussion.previousStructure = previous;
-                else throw new Error('Invalid history');
-              } catch { delete discussion[key]; recovered = true; }
-            }
-          } catch { delete topic.discussion; recovered = true; }
-        }
-        for (const request of topic.requests) {
-          if (request.discussionSnapshot) {
-            try { request.discussionSnapshot = parseTeacherDiscussionContent(request.discussionSnapshot); }
-            catch { delete request.discussionSnapshot; recovered = true; }
-          }
-        }
+        // Legacy component fields are opaque archives: never validate, revive or delete them.
         for (const request of topic.requests)
           if (request.status === 'preparing' || request.status === 'running') {
             request.status = 'interrupted';
diff --git a/electron/coding-teacher/suggestions.ts b/electron/coding-teacher/suggestions.ts
deleted file mode 100644
index 62f1749e..00000000
--- a/electron/coding-teacher/suggestions.ts
+++ /dev/null
@@ -1,33 +0,0 @@
-import { TeacherError } from './config-client';
-
-export interface TeacherSuggestions {
-  intro: string;
-  questions: string[];
-}
-
-/** Validate model output before it can become interactive student questions. */
-export function parseTeacherSuggestions(response: string): TeacherSuggestions {
-  const invalid = () => new TeacherError(
-    502,
-    'teacher_suggestions_invalid',
-    '智能体这次没能整理好可以讨论的问题，请再试一次，或直接告诉智能体你的想法。'
-  );
-  const text = response.trim();
-  const fenced = text.match(/^```(?:json)?\s*\n([\s\S]*?)\n```$/i);
-  let parsed: unknown;
-  try {
-    parsed = JSON.parse(fenced ? fenced[1] : text);
-  } catch {
-    throw invalid();
-  }
-  if (!parsed || typeof parsed !== 'object' || Array.isArray(parsed)) throw invalid();
-  const { intro, questions } = parsed as Record<string, unknown>;
-  if (
-    typeof intro !== 'string' || !intro.trim() || intro.trim().length > 400 ||
-    !Array.isArray(questions) || questions.length < 2 || questions.length > 3 ||
-    questions.some((question) => typeof question !== 'string' || !question.trim() || question.trim().length > 120)
-  ) throw invalid();
-  const uniqueQuestions = [...new Set(questions.map((question: string) => question.trim()))];
-  if (uniqueQuestions.length < 2) throw invalid();
-  return { intro: intro.trim(), questions: uniqueQuestions };
-}
diff --git a/shared/coding-teacher.ts b/shared/coding-teacher.ts
index b4f92c05..59f443bf 100644
--- a/shared/coding-teacher.ts
+++ b/shared/coding-teacher.ts
@@ -1,4 +1,3 @@
-import type { TeacherDiscussion, TeacherDiscussionContent } from './teacher-discussion';
 import type { PublicUsage } from './coding-conversation-contracts';
 
 /** Only retained for locating conversations created by older clients. */
@@ -67,19 +66,6 @@ export type TeacherRequestStatus =
   | 'failed'
   | 'cancelled'
   | 'interrupted';
-export interface TeacherDiscussionContext {
-  toolId: string;
-  revision: number;
-  focusId?: string;
-  transition?: 'structure';
-}
-export interface TeacherDiscussionAction {
-  projectId?: string;
-  toolId: string;
-  revision: number;
-  action: 'enter' | 'pause' | 'finish' | 'resume' | 'keep-idea' | 'aside-idea' | 'first-idea' | 'back-ideas';
-  itemId?: string;
-}
 export interface TeacherRequest {
   /** Frozen when this turn is accepted; history can span projects and releases. */
   projectId?: string;
@@ -87,11 +73,14 @@ export interface TeacherRequest {
   teacherVersion?: number;
   runtimeThreadId?: string;
   origin?: { projectId: string; topicId: string; requestId: string };
-  presentation?: 'discussion-v1';
-  discussionContext?: TeacherDiscussionContext;
-  discussionSnapshot?: TeacherDiscussionContent;
+  /** discussion-v1 is retained only to identify historical replies. */
+  presentation?: 'reply-v1' | 'discussion-v1';
+  /** Archived legacy data; never parsed into interactive component state. */
+  discussionContext?: unknown;
+  discussionSnapshot?: unknown;
   discussionError?: string;
-  /** Original answer retained when discussion parsing fails; never fed back as context. */
+  replyParseError?: string;
+  /** Original answer retained when reply parsing fails; never fed back as context. */
   unparsedResponse?: string;
   toolActivity?: TeacherToolActivity[];
 
@@ -127,10 +116,12 @@ export interface TeacherTopic {
     agentId: string;
     runtimeThreadId?: string;
     segmentTurns: number;
-    discussions: Record<string, TeacherDiscussion>;
+    /** Archived per-project component data; never selected or updated by new turns. */
+    discussions?: Record<string, unknown>;
     seenThrough?: string;
   };
-  discussion?: TeacherDiscussion;
+  /** Archived legacy data; new requests do not create or update it. */
+  discussion?: unknown;
   role?: LegacyConsultationRole;
   revision: number;
   schemaVersion: 1;
@@ -152,8 +143,6 @@ export interface TeacherTopicList {
 }
 export interface TeacherSend {
   projectId?: string;
-  presentation?: 'discussion-v1';
-  discussion?: TeacherDiscussionContext;
   intent?: TeacherRequestIntent;
   sourceConversationId?: string;
   requestId: string;
diff --git a/shared/teacher-discussion.ts b/shared/teacher-discussion.ts
deleted file mode 100644
index 4e01f4c9..00000000
--- a/shared/teacher-discussion.ts
+++ /dev/null
@@ -1,305 +0,0 @@
-/** Content comes from the teacher; rendering, lifecycle, and type locking belong to the app. */
-export interface TeacherIdeaItem {
-  id: string;
-  text: string;
-  parentId?: string;
-  state: 'kept' | 'suggested' | 'aside';
-}
-
-export interface TeacherStructureNode {
-  id: string;
-  label: string;
-  relation?: string;
-  parentId?: string;
-}
-
-export interface TeacherFlowNode {
-  id: string;
-  label: string;
-  kind: 'event' | 'condition' | 'outcome';
-}
-
-export interface TeacherFlowEdge {
-  id: string;
-  from: string;
-  to: string;
-  label?: string;
-}
-
-export interface TeacherComparisonColumn {
-  id: string;
-  label: string;
-}
-
-export interface TeacherComparisonRow {
-  id: string;
-  label: string;
-  cells: Array<{ columnId: string; text: string }>;
-}
-
-export type TeacherDiscussionContent =
-  | { kind: 'ideas'; title: string; items: TeacherIdeaItem[]; firstItemId?: string }
-  | { kind: 'structure'; title: string; nodes: TeacherStructureNode[] }
-  | { kind: 'flow'; title: string; nodes: TeacherFlowNode[]; edges: TeacherFlowEdge[] }
-  | { kind: 'comparison'; title: string; columns: TeacherComparisonColumn[]; rows: TeacherComparisonRow[] };
-
-export interface TeacherDiscussion {
-  id: string;
-  revision: number;
-  status: 'offered' | 'active' | 'paused' | 'finished';
-  content: TeacherDiscussionContent;
-  previousIdeas?: Extract<TeacherDiscussionContent, { kind: 'ideas' }>;
-  previousStructure?: Extract<TeacherDiscussionContent, { kind: 'structure' }>;
-}
-
-export interface TeacherDiscussionReply {
-  reply: string;
-  quickReplies: string[];
-  tool?: TeacherDiscussionContent | null;
-  toolError?: string;
-}
-
-const MAX_REPLY_LENGTH = 12000;
-const MAX_INPUT_BYTES = 64000;
-const INVALID_REPLY = '这次回复没有整理完整，请再试一次。';
-const INVALID_TOOL = '这次整理没有完成，先保留原来的内容。';
-const dangerousKeys = new Set(['__proto__', 'prototype', 'constructor']);
-
-function invalid(): never {
-  // Validation errors contain no untrusted model content.
-  throw new Error('老师组件内容格式无效或超过长度限制。');
-}
-
-function record(value: unknown): Record<string, unknown> {
-  if (!value || typeof value !== 'object' || Array.isArray(value)) return invalid();
-  const prototype = Object.getPrototypeOf(value);
-  if (prototype !== Object.prototype && prototype !== null) return invalid();
-  for (const [key, descriptor] of Object.entries(Object.getOwnPropertyDescriptors(value))) {
-    if (dangerousKeys.has(key) || !('value' in descriptor)) return invalid();
-  }
-  return value as Record<string, unknown>;
-}
-
-function text(value: unknown, max: number, allowEmpty = false): string {
-  if (typeof value !== 'string' || value.length > max || (!allowEmpty && !value.trim())) return invalid();
-  return value.trim();
-}
-
-function id(value: unknown): string {
-  if (typeof value !== 'string' || !/^[A-Za-z0-9_-]{1,64}$/.test(value) || dangerousKeys.has(value)) return invalid();
-  return value;
-}
-
-function array(value: unknown, min: number, max: number): unknown[] {
-  if (!Array.isArray(value) || value.length < min || value.length > max) return invalid();
-  // Do not invoke accessor elements, overridden map methods, or custom iterators.
-  const projected: unknown[] = [];
-  for (let index = 0; index < value.length; index++) {
-    const descriptor = Object.getOwnPropertyDescriptor(value, index);
-    if (!descriptor || !('value' in descriptor)) return invalid();
-    projected.push(descriptor.value);
-  }
-  return projected;
-}
-
-function uniqueIds<T extends { id: string }>(values: T[]): Set<string> {
-  const ids = new Set(values.map(value => value.id));
-  if (ids.size !== values.length) return invalid();
-  return ids;
-}
-
-function optionalParent(value: Record<string, unknown>): { parentId?: string } {
-  return value.parentId === undefined ? {} : { parentId: id(value.parentId) };
-}
-
-function validateParents(values: Array<{ id: string; parentId?: string }>): void {
-  const ids = uniqueIds(values);
-  const parents = new Map(values.map(value => [value.id, value.parentId]));
-  for (const value of values) {
-    const path = new Set<string>([value.id]);
-    let parent = value.parentId;
-    while (parent !== undefined) {
-      if (!ids.has(parent) || path.has(parent)) return invalid();
-      path.add(parent);
-      parent = parents.get(parent);
-    }
-  }
-}
-
-/** Validate and project only the supported data fields. No HTML, style, or executable actions are copied. */
-export function parseTeacherDiscussionContent(value: unknown): TeacherDiscussionContent {
-  const content = record(value);
-  const title = text(content.title, 120);
-  switch (content.kind) {
-    case 'ideas': {
-      const items: TeacherIdeaItem[] = array(content.items, 1, 24).map(raw => {
-        const item = record(raw);
-        if (item.state !== 'kept' && item.state !== 'suggested' && item.state !== 'aside') return invalid();
-        return { id: id(item.id), text: text(item.text, 600), ...optionalParent(item), state: item.state };
-      });
-      validateParents(items);
-      if (content.firstItemId !== undefined) {
-        const firstItemId = id(content.firstItemId);
-        if (!items.some(item => item.id === firstItemId && item.state === 'kept')) return invalid();
-        return { kind: 'ideas', title, items, firstItemId };
-      }
-      return { kind: 'ideas', title, items };
-    }
-    case 'structure': {
-      const nodes: TeacherStructureNode[] = array(content.nodes, 1, 24).map(raw => {
-        const node = record(raw);
-        return {
-          id: id(node.id), label: text(node.label, 600), ...optionalParent(node),
-          ...(node.relation === undefined ? {} : { relation: text(node.relation, 120) }),
-        };
-      });
-      validateParents(nodes);
-      return { kind: 'structure', title, nodes };
-    }
-    case 'flow': {
-      const nodes: TeacherFlowNode[] = array(content.nodes, 1, 24).map(raw => {
-        const node = record(raw);
-        if (node.kind !== 'event' && node.kind !== 'condition' && node.kind !== 'outcome') return invalid();
-        return { id: id(node.id), label: text(node.label, 600), kind: node.kind };
-      });
-      const nodeIds = uniqueIds(nodes);
-      const edges: TeacherFlowEdge[] = array(content.edges, 0, 40).map(raw => {
-        const edge = record(raw);
-        const from = id(edge.from), to = id(edge.to);
-        if (!nodeIds.has(from) || !nodeIds.has(to)) return invalid();
-        return {
-          id: id(edge.id), from, to,
-          ...(edge.label === undefined ? {} : { label: text(edge.label, 160) }),
-        };
-      });
-      uniqueIds(edges);
-      // Explicit cycles are valid: a game loop or failed attempt may return to an earlier event.
-      return { kind: 'flow', title, nodes, edges };
-    }
-    case 'comparison': {
-      const columns: TeacherComparisonColumn[] = array(content.columns, 2, 4).map(raw => {
-        const column = record(raw);
-        return { id: id(column.id), label: text(column.label, 120) };
-      });
-      const columnIds = uniqueIds(columns);
-      const rows: TeacherComparisonRow[] = array(content.rows, 1, 12).map(raw => {
-        const row = record(raw);
-        const cells = array(row.cells, columns.length, columns.length).map(rawCell => {
-          const cell = record(rawCell);
-          const columnId = id(cell.columnId);
-          if (!columnIds.has(columnId)) return invalid();
-          return { columnId, text: text(cell.text, 600) };
-        });
-        if (new Set(cells.map(cell => cell.columnId)).size !== columns.length) return invalid();
-        const byColumn = new Map(cells.map(cell => [cell.columnId, cell]));
-        return {
-          id: id(row.id), label: text(row.label, 160),
-          cells: columns.map(column => byColumn.get(column.id)!),
-        };
-      });
-      uniqueIds(rows);
-      return { kind: 'comparison', title, columns, rows };
-    }
-    default: return invalid();
-  }
-}
-
-function quickReplies(value: unknown): string[] {
-  if (value === undefined) return [];
-  try {
-    return [...new Set(array(value, 0, 3).map(reply => text(reply, 120)))];
-  } catch { return []; }
-}
-
-function stringToken(raw: string, start: number): { value: string; end: number } | undefined {
-  for (let cursor = start + 1; cursor < raw.length; cursor++) {
-    if (raw[cursor] === '\\') { cursor++; continue; }
-    if (raw[cursor] !== '"') continue;
-    try {
-      const value: unknown = JSON.parse(raw.slice(start, cursor + 1));
-      if (typeof value === 'string') return { value, end: cursor + 1 };
-    } catch { return undefined; }
-  }
-  return undefined;
-}
-
-/** Inspect only top-level fields, including when a later value was truncated. */
-function findTopLevelField(raw: string, names: readonly string[]): number | undefined {
-  if (!raw.trimStart().startsWith('{')) return undefined;
-  let depth = 0, expectingKey = false;
-  for (let cursor = 0; cursor < raw.length; cursor++) {
-    const character = raw[cursor];
-    if (character === '"') {
-      const token = stringToken(raw, cursor);
-      if (!token) return undefined;
-      if (depth === 1 && expectingKey && names.includes(token.value)) {
-        let valueStart = token.end;
-        while (/\s/.test(raw[valueStart] ?? '') && valueStart < raw.length) valueStart++;
-        if (raw[valueStart] !== ':') return undefined;
-        valueStart++;
-        while (/\s/.test(raw[valueStart] ?? '') && valueStart < raw.length) valueStart++;
-        return valueStart;
-      }
-      if (depth === 1) expectingKey = false;
-      cursor = token.end - 1;
-    } else if (character === '{' || character === '[') {
-      depth++;
-      if (depth === 1) expectingKey = character === '{';
-    } else if (character === '}' || character === ']') {
-      depth--;
-    } else if (character === ',' && depth === 1) {
-      expectingKey = true;
-    }
-  }
-  return undefined;
-}
-
-/** Recover a complete reply string, never nested tool data or a partial string. */
-function recoverReply(raw: string): string | undefined {
-  const start = findTopLevelField(raw, ['reply']);
-  if (start === undefined || raw[start] !== '"') return undefined;
-  const value = stringToken(raw, start)?.value;
-  return value?.trim() && value.length <= MAX_REPLY_LENGTH ? value.trim() : undefined;
-}
-
-function invalidReply(candidate: string): TeacherDiscussionReply {
-  return { reply: recoverReply(candidate) ?? INVALID_REPLY, quickReplies: [], toolError: INVALID_TOOL };
-}
-
-/** Parse final model output. Callers keep the existing tool whenever toolError is present. */
-export function parseTeacherDiscussionReply(raw: string): TeacherDiscussionReply {
-  const trimmed = raw.trim();
-  // A Markdown link, JSON example or code fence is not a discussion envelope.
-  // Only our explicit fence or top-level protocol fields select this parser.
-  const firstFence = /(?:^|\n)[ \t]*```([^\r\n]*)[ \t]*(?:\r?\n|$)/.exec(trimmed);
-  const language = firstFence?.[1].trim().toLowerCase();
-  const explicitFence = language === 'makelore-teacher' || language === 'makelore-teacher-discussion';
-  const opening = firstFence && (explicitFence || language === 'json' || language === '') ? firstFence : null;
-  const unfencedEnvelope = !firstFence && !trimmed.startsWith('{')
-    ? /(?:^|\n)[ \t]*(\{\s*"(?:reply|quickReplies|tool)"\s*:)/.exec(trimmed) : null;
-  let candidate = unfencedEnvelope ? trimmed.slice(unfencedEnvelope.index).trimStart() : trimmed;
-  let validFence = true;
-  if (opening) {
-    const remainder = trimmed.slice(opening.index + opening[0].length);
-    const closing = /\r?\n```[ \t]*$/.exec(remainder);
-    candidate = closing ? remainder.slice(0, closing.index) : remainder;
-    validFence = !!closing && !/(?:^|\n)[ \t]*```/.test(candidate);
-  }
-  if (!explicitFence && findTopLevelField(candidate, ['reply', 'quickReplies', 'tool']) === undefined) {
-    return { reply: trimmed.slice(0, MAX_REPLY_LENGTH) || INVALID_REPLY, quickReplies: [] };
-  }
-  if (new TextEncoder().encode(trimmed).length > MAX_INPUT_BYTES) return invalidReply(candidate.slice(0, MAX_INPUT_BYTES));
-  if (!validFence) return invalidReply(candidate);
-  try {
-    const envelope = record(JSON.parse(candidate));
-    const reply = text(envelope.reply, MAX_REPLY_LENGTH, true);
-    const result: TeacherDiscussionReply = { reply, quickReplies: quickReplies(envelope.quickReplies) };
-    if (envelope.tool === null) result.tool = null;
-    else if (envelope.tool !== undefined) {
-      try { result.tool = parseTeacherDiscussionContent(envelope.tool); }
-      catch { result.toolError = INVALID_TOOL; }
-    }
-    if (!reply && !result.tool) result.reply = INVALID_REPLY;
-    return result;
-  } catch { return invalidReply(candidate); }
-}
diff --git a/shared/teacher-reply.ts b/shared/teacher-reply.ts
new file mode 100644
index 00000000..62eec581
--- /dev/null
+++ b/shared/teacher-reply.ts
@@ -0,0 +1,198 @@
+export interface TeacherReply {
+  reply: string;
+  quickReplies: string[];
+  parseError?: string;
+}
+
+// Resource limits, not writing instructions. Ordinary answers below the transport
+// limit are preserved in full, including Markdown and long suggested questions.
+export const MAX_TEACHER_REPLY_BYTES = 1024 * 1024;
+export const MAX_TEACHER_QUICK_REPLIES = 128;
+export const MAX_TEACHER_QUICK_REPLY_BYTES = 64 * 1024;
+const INVALID_REPLY = '这次回复没有完整解析，请重试。';
+const INVALID_FORMAT = '回复格式不完整或无效。';
+const RESOURCE_LIMIT = '回复超过可处理的数据大小。';
+const protocolKeys = new Set(['reply', 'quickReplies', 'intro', 'questions', 'tool']);
+const own = (value: object, key: string) => Object.prototype.hasOwnProperty.call(value, key);
+
+function withinBytes(value: string, max: number): boolean {
+  return value.length <= max && new TextEncoder().encode(value).length <= max;
+}
+
+function stringEnd(raw: string, start: number): number | undefined {
+  for (let index = start + 1; index < raw.length; index++) {
+    if (raw[index] === '\\') { index++; continue; }
+    if (raw[index] === '"') return index + 1;
+  }
+  return undefined;
+}
+
+/** Find one complete value without interpreting nested legacy tool data. */
+function valueEnd(raw: string, start: number): number | undefined {
+  if (raw[start] === '"') return stringEnd(raw, start);
+  if (raw[start] !== '{' && raw[start] !== '[') {
+    let end = start;
+    while (end < raw.length && !/[,}\]\s]/.test(raw[end])) end++;
+    return end > start ? end : undefined;
+  }
+  const stack = [raw[start]];
+  for (let index = start + 1; index < raw.length; index++) {
+    const character = raw[index];
+    if (character === '"') {
+      const end = stringEnd(raw, index);
+      if (end === undefined) return undefined;
+      index = end - 1;
+    } else if (character === '{' || character === '[') stack.push(character);
+    else if (character === '}' || character === ']') {
+      if (stack.pop() !== (character === '}' ? '{' : '[')) return undefined;
+      if (!stack.length) return index + 1;
+    }
+  }
+  return undefined;
+}
+
+/** Recover only complete top-level fields; nested reply-looking data stays inert. */
+function fields(raw: string): { values: Map<string, unknown>; keys: Set<string>; duplicate: boolean; toolStart?: number } {
+  const values = new Map<string, unknown>(), keys = new Set<string>();
+  let duplicate = false, index = raw.indexOf('{') + 1;
+  let toolStart: number | undefined;
+  const whitespace = () => { while (index < raw.length && /\s/.test(raw[index])) index++; };
+  while (index > 0 && index < raw.length) {
+    whitespace();
+    if (raw[index] !== '"') break;
+    const end = stringEnd(raw, index);
+    if (end === undefined) break;
+    let key: string;
+    try { key = JSON.parse(raw.slice(index, end)); } catch { break; }
+    index = end;
+    whitespace();
+    if (raw[index++] !== ':') break;
+    duplicate ||= keys.has(key);
+    keys.add(key);
+    whitespace();
+    if (key === 'tool') toolStart = index;
+    const next = valueEnd(raw, index);
+    if (next === undefined) break;
+    if ((protocolKeys.has(key) || key === 'kind') && key !== 'tool' && !values.has(key)) {
+      try { values.set(key, JSON.parse(raw.slice(index, next))); } catch { break; }
+    }
+    index = next;
+    whitespace();
+    if (raw[index++] !== ',') break;
+  }
+  return { values, keys, duplicate, toolStart };
+}
+
+interface Candidate { start: number; end: number; content: string; incomplete?: boolean }
+function isEnvelope(raw: string): boolean {
+  const scanned = fields(raw);
+  if (scanned.keys.has('reply') || scanned.keys.has('quickReplies')
+    || (scanned.keys.has('intro') && scanned.keys.has('questions'))) return true;
+  // "questions" and "tool" also occur in ordinary API/code examples. A tool
+  // alone identifies the retired reply protocol only through its legacy kind.
+  if (scanned.toolStart !== undefined && raw[scanned.toolStart] === '{') {
+    const kind = fields(raw.slice(scanned.toolStart)).values.get('kind');
+    if (typeof kind === 'string' && ['ideas', 'structure', 'flow', 'comparison'].includes(kind)) return true;
+  }
+  return /^\{\s*(?:reply|quickReplies)\s*:/.test(raw);
+}
+
+/** Markdown examples stay prose unless a top-level reply envelope identifies them. */
+function candidates(raw: string): Candidate[] {
+  const result: Candidate[] = [];
+  const inspectText = (start: number, end: number) => {
+    for (let index = start; index < end; index++) {
+      if (raw[index] === '`') {
+        let fenceEnd = index + 1;
+        while (raw[fenceEnd] === '`') fenceEnd++;
+        const close = raw.indexOf(raw.slice(index, fenceEnd), fenceEnd);
+        index = close >= 0 && close < end ? close + fenceEnd - index - 1 : end;
+      } else if (raw[index] === '[') {
+        const endOfArray = valueEnd(raw, index);
+        if (endOfArray !== undefined && endOfArray <= end) {
+          try {
+            if (Array.isArray(JSON.parse(raw.slice(index, endOfArray)))) index = endOfArray - 1;
+          } catch { /* A Markdown link is not a JSON array. */ }
+        }
+      } else if (raw[index] === '{') {
+        const objectEnd = valueEnd(raw, index);
+        const stop = objectEnd !== undefined && objectEnd <= end ? objectEnd : end;
+        const content = raw.slice(index, stop);
+        if (isEnvelope(content)) result.push({ start: index, end: stop, content });
+        index = stop - 1;
+      }
+    }
+  };
+  const opening = /(?:^|\n)[ \t]*(`{3,}|~{3,})([^\r\n]*)\r?\n/g;
+  let processed = 0, match: RegExpExecArray | null;
+  while ((match = opening.exec(raw))) {
+    inspectText(processed, match.index);
+    const bodyStart = opening.lastIndex;
+    const marker = match[1][0], size = match[1].length;
+    const closing = new RegExp('(?:^|\\n)[ \\t]*' + marker + '{' + size + ',}[ \\t]*(?=\\r?\\n|$)', 'g');
+    closing.lastIndex = bodyStart;
+    const close = closing.exec(raw);
+    const body = raw.slice(bodyStart, close?.index ?? raw.length).trim();
+    const language = match[2].trim().toLowerCase();
+    const explicit = ['makelore-teacher', 'makelore-teacher-reply', 'makelore-teacher-discussion'].includes(language);
+    if (explicit || ((language === 'json' || language === '') && body.startsWith('{') && isEnvelope(body))) {
+      result.push({ start: match.index, end: close ? closing.lastIndex : raw.length, content: body, incomplete: !close });
+    }
+    processed = close ? closing.lastIndex : raw.length;
+    opening.lastIndex = processed;
+  }
+  inspectText(processed, raw.length);
+  return result;
+}
+
+function projectReply(envelope: Record<string, unknown>): TeacherReply {
+  const reply = own(envelope, 'reply') ? envelope.reply : envelope.intro;
+  const suggestions = own(envelope, 'quickReplies') ? envelope.quickReplies : envelope.questions;
+  let parseError: string | undefined;
+  let quickReplies: string[] = [];
+  if (suggestions !== undefined) {
+    if (!Array.isArray(suggestions) || suggestions.some(item => typeof item !== 'string' || !item.trim())) {
+      parseError = INVALID_FORMAT;
+    } else if (suggestions.length > MAX_TEACHER_QUICK_REPLIES
+      || suggestions.some(item => !withinBytes(item, MAX_TEACHER_QUICK_REPLY_BYTES))) {
+      parseError = RESOURCE_LIMIT;
+    } else quickReplies = suggestions;
+  }
+  if (typeof reply !== 'string' || (!reply.trim() && !quickReplies.length)) {
+    return { reply: INVALID_REPLY, quickReplies, parseError: INVALID_FORMAT };
+  }
+  return { reply, quickReplies, ...(parseError ? { parseError } : {}) };
+}
+
+/** Only text and suggested replies survive; legacy tool payloads are never restored. */
+export function parseTeacherReply(raw: string): TeacherReply {
+  if (!withinBytes(raw, MAX_TEACHER_REPLY_BYTES)) {
+    return { reply: INVALID_REPLY, quickReplies: [], parseError: RESOURCE_LIMIT };
+  }
+  const text = raw.trim();
+  if (!text) return { reply: INVALID_REPLY, quickReplies: [], parseError: INVALID_FORMAT };
+  const found = candidates(text);
+  if (!found.length) return { reply: text, quickReplies: [] };
+  const candidate = found[0];
+  let result: TeacherReply;
+  const recovered = fields(candidate.content);
+  try {
+    const envelope: unknown = JSON.parse(candidate.content);
+    if (!envelope || typeof envelope !== 'object' || Array.isArray(envelope)) throw new Error();
+    result = projectReply(envelope as Record<string, unknown>);
+  } catch {
+    result = projectReply(Object.fromEntries(recovered.values));
+    result.parseError = INVALID_FORMAT;
+  }
+  if (candidate.incomplete || recovered.duplicate || found.length > 1) result.parseError = INVALID_FORMAT;
+  // Multiple envelopes are ambiguous; never append their JSON as visible prose.
+  if (found.length === 1) {
+    const suffix = text.slice(candidate.end).trim();
+    const brokenTail = /^[,\s]*"(?:reply|quickReplies|intro|questions|tool)"\s*:/.test(suffix)
+      || (suffix.length > 0 && /^[}\],\s]+$/.test(suffix));
+    if (brokenTail) result.parseError = INVALID_FORMAT;
+    result.reply = [text.slice(0, candidate.start).trim(), result.reply, brokenTail ? '' : suffix]
+      .filter(part => part.length > 0).join('\n\n');
+  }
+  return result;
+}
diff --git a/src/lib/coding-teacher.ts b/src/lib/coding-teacher.ts
index 278af0db..a543bcac 100644
--- a/src/lib/coding-teacher.ts
+++ b/src/lib/coding-teacher.ts
@@ -5,7 +5,6 @@ import type {
   TeacherCheckInResult,
   TeacherCatalog,
   TeacherDefinition,
-  TeacherDiscussionAction,
   TeacherSend,
   TeacherTopic,
   TeacherTopicList,
@@ -61,10 +60,6 @@ export const teacherApi = {
       method: 'POST',
       body: JSON.stringify(input),
     }),
-  updateDiscussion: (base: string, id: string, input: TeacherDiscussionAction) =>
-    hostApiFetch<TeacherTopic>(base + '/' + encodeURIComponent(id) + '/discussion', {
-      method: 'POST', body: JSON.stringify(input),
-    }),
   cancel: (base: string, id: string, requestId: string) =>
     hostApiFetch<TeacherTopic>(
       base +
diff --git a/src/pages/Chat/AgentBrowserPanel.tsx b/src/pages/Chat/AgentBrowserPanel.tsx
index bc8e0220..25e1feb3 100644
--- a/src/pages/Chat/AgentBrowserPanel.tsx
+++ b/src/pages/Chat/AgentBrowserPanel.tsx
@@ -480,23 +480,24 @@ export function AgentBrowserPanel({
       ref={panelRef}
       className={cn(embedded ? 'relative flex min-h-0 w-full min-w-0 flex-1 flex-col overflow-hidden bg-background' : 'relative flex w-[400px] min-w-[300px] max-w-[48vw] shrink-0 flex-col overflow-hidden border-l border-border/80 bg-background shadow-[-16px_0_32px_hsl(220_20%_16%_/_0.06)] max-[900px]:fixed max-[900px]:inset-y-10 max-[900px]:right-0 max-[900px]:z-40 max-[900px]:max-w-[min(92vw,420px)]')}
       data-testid="agent-browser-panel"
+      aria-label={embedded ? '作品预览' : '开发浏览器'}
     >
-      <div className="flex h-10 shrink-0 items-center gap-2 border-b border-border/70 px-2.5">
+      {!embedded && <div className="flex h-10 shrink-0 items-center gap-2 border-b border-border/70 px-2.5">
         <span className="flex h-6 w-6 items-center justify-center rounded-md bg-brand-soft text-brand">
           <Globe2 className="h-3.5 w-3.5" aria-hidden="true" />
         </span>
-        <h2 className="min-w-0 flex-1 truncate text-xs font-semibold">{embedded ? '作品预览' : '开发浏览器'}</h2>
+        <h2 className="min-w-0 flex-1 truncate text-xs font-semibold">开发浏览器</h2>
         <Button
           type="button"
           variant="ghost"
           size="icon"
           className="h-8 w-8 rounded-md text-muted-foreground"
-          aria-label={embedded ? '收起作品' : '关闭开发浏览器'}
+          aria-label="关闭开发浏览器"
           onClick={() => onOpenChange(false)}
         >
           <X className="h-4 w-4" aria-hidden="true" />
         </Button>
-      </div>
+      </div>}
 
       <form className="flex h-10 shrink-0 items-center gap-1 border-b border-border/70 px-2" onSubmit={handleOpenAddress}>
         <Button type="button" variant="ghost" size="icon" className="h-7 w-7 rounded-md" aria-label="后退" disabled={!snapshot?.canGoBack || busy} onClick={() => handleNavigate('back')}>
diff --git a/src/pages/Chat/TeacherChatPanel.tsx b/src/pages/Chat/TeacherChatPanel.tsx
index 663a00ae..94fd03e4 100644
--- a/src/pages/Chat/TeacherChatPanel.tsx
+++ b/src/pages/Chat/TeacherChatPanel.tsx
@@ -1,4 +1,4 @@
-import { useCallback, useEffect, useLayoutEffect, useMemo, useRef, useState } from 'react';
+import { useCallback, useEffect, useLayoutEffect, useRef, useState } from 'react';
 import { ArrowUp, ChevronDown, ChevronRight, Loader2 } from 'lucide-react';
 import { useAuthStore } from '@/stores/auth';
 import { teacherApi, teacherTopicsPath, legacyTopicBase, type TeacherCatalogState } from '@/lib/coding-teacher';
@@ -10,8 +10,6 @@ import type {
   TeacherTopic,
   TeacherTopicList,
 } from '../../../shared/coding-teacher';
-import { TeacherDiscussionPanel, DiscussionFocus } from './TeacherDiscussionPanel';
-import type { TeacherDiscussionAction } from '../../../shared/coding-teacher';
 import { TeacherAvatar } from './TeacherAvatar';
 import { TeacherReply } from './TeacherReply';
 
@@ -21,6 +19,13 @@ const conversationViews = new Map<string, { topic: TeacherTopic | null; before:
 const messageOrderKey = (request: TeacherTopic['requests'][number]) => request.origin
   ? [request.origin.projectId, request.origin.topicId, request.origin.requestId].join(':') : request.id;
 
+function restorePendingSend(saved?: TeacherSend, legacyProjectId?: string): TeacherSend | null {
+  if (!saved) return null;
+  // Keep an interrupted send retryable without restoring retired UI protocol fields.
+  const { requestId, text, references, intent, sourceConversationId, projectId } = saved;
+  return { requestId, text, references, intent, sourceConversationId, ...(projectId || legacyProjectId ? { projectId: projectId ?? legacyProjectId } : {}) };
+}
+
 export function TeacherChatPanel({
   projectId,
   projectName,
@@ -76,7 +81,6 @@ export function TeacherChatPanel({
     try { localStorage.setItem(draftKey, JSON.stringify({ text, references, pending, ...referenceScopeRef.current })); } catch { /* Draft remains in the open panel. */ }
   }, [draftKey]);
   const label = '智能体';
-  const discussionEnabled = !draftRevision;
   const [historyOpen, setHistoryOpen] = useState(false);
   const [before, setBefore] = useState<string | null>(cachedView?.before ?? null);
   const [loadingOlder, setLoadingOlder] = useState(false);
@@ -84,7 +88,6 @@ export function TeacherChatPanel({
   const followBottom = useRef(cachedView?.follow ?? true);
   const restoreTop = useRef(cachedView?.top);
   const scrollPosition = useRef(cachedView?.top ?? 0);
-  const [focus, setFocus] = useState<{ topicId: string; id: string; label: string } | null>(null);
   const [localDefinition, setDefinition] = useState<TeacherDefinition | null>(null);
   const catalogStateRef = useRef(catalogState);
   catalogStateRef.current = catalogState;
@@ -96,10 +99,7 @@ export function TeacherChatPanel({
   const inputRef = useRef<HTMLTextAreaElement>(null);
   const focusedOnce = useRef(false);
   const [topics, setTopics] = useState<TeacherTopicList>({ items: [], lastSelectedTopicId: null });
-  const [storedTopic, setTopic] = useState<TeacherTopic | null>(cachedView?.topic ?? null);
-  const topic = useMemo(() => storedTopic && continuous ? { ...storedTopic,
-    discussion: storedTopic.projectId === projectId ? storedTopic.discussion : storedTopic.conversation?.discussions[projectId] }
-    : storedTopic, [storedTopic, continuous, projectId]);
+  const [topic, setTopic] = useState<TeacherTopic | null>(cachedView?.topic ?? null);
   const legacyFriend = topic?.role === 'friend';
   const legacyView = Boolean(continuous && topic && !topic.conversation);
   const viewingLegacy = useRef(false);
@@ -133,7 +133,7 @@ export function TeacherChatPanel({
     : topic.definition.config_id
       ? teachers.some((item) => item.teacher_id === topic.definition.config_id)
       : legacyEnabled;
-  const pending = useRef<TeacherSend | null>(saved.pending ?? null);
+  const pending = useRef<TeacherSend | null>(restorePendingSend(saved.pending, continuous ? saved.projectId ?? projectId : undefined));
   useEffect(() => {
     persistDraft(text, references, pending.current);
   }, [text, references, persistDraft]);
@@ -147,12 +147,6 @@ export function TeacherChatPanel({
     if (continuous && draftKey && !viewingLegacy.current) conversationViews.set(draftKey, { topic: topicRef.current,
       before: beforeRef.current, top: scrollPosition.current, follow: followBottom.current });
   }, [continuous, draftKey]);
-  const content = topic?.discussion?.content;
-  const activeFocus = focus && focus.topicId === topic?.id && content && topic?.discussion?.status === 'active' && (
-    content.kind === 'ideas' ? content.items.some(item => item.id === focus.id)
-      : content.kind === 'comparison' ? content.rows.some(row => content.columns.some(column => `${row.id}:${column.id}` === focus.id))
-        : content.nodes.some(node => node.id === focus.id)
-  ) ? focus : null;
   useLayoutEffect(() => {
     const pane = scrollRef.current;
     if (!pane) return;
@@ -384,14 +378,16 @@ export function TeacherChatPanel({
       if (version === generation.current) setBusy(false);
     }
   };
-  const send = async (action?: Pick<TeacherSend, 'text' | 'intent' | 'discussion'>) => {
+  const send = async (action?: Pick<TeacherSend, 'text' | 'intent'>) => {
     const question = action?.text ?? text;
     const questionReferences = action ? [] : references;
     if (!question.trim() || busy || !topicEnabled || topicRef.current?.requests.some((request) => ['preparing', 'running'].includes(request.status))) return;
     if (continuous && questionReferences.length && (referenceScope.projectId !== projectId || referenceScope.sourceId !== sourceId)) {
       setError('引用来自另一个项目或操作对话，请切回来源，或移除引用后再提问。'); return;
     }
-    if (continuous && pending.current?.text === question && pending.current.projectId && pending.current.projectId !== projectId) {
+    if (continuous && pending.current && !topicRef.current?.requests.some(request => request.id === pending.current?.requestId)
+      && (pending.current.text === question || (action?.intent === 'suggestions' && pending.current.intent === 'suggestions'))
+      && pending.current.projectId && pending.current.projectId !== projectId) {
       setError('上次提问仍绑定原项目，请切回原项目确认结果后重试。'); return;
     }
     const version = generation.current;
@@ -410,27 +406,22 @@ export function TeacherChatPanel({
         consume(current);
         setDefinition(current.definition);
       }
-      const presentation = discussionEnabled && (!action?.intent || action.intent === 'question' || action.intent === 'guided-help') ? 'discussion-v1' as const : undefined;
-      const discussion = presentation && current?.discussion?.status === 'active'
-        ? action?.discussion ?? { toolId: current.discussion.id, revision: current.discussion.revision,
-          ...(activeFocus?.topicId === current.id ? { focusId: activeFocus.id } : {}) } : undefined;
       const previous = pending.current && !current?.requests.some((request) => request.id === pending.current?.requestId)
         ? pending.current
         : null;
+      // Copy changes must not create another charge for an uncertain hint request.
+      const retrySuggestions = action?.intent === 'suggestions' && previous?.intent === 'suggestions';
       const input =
-        previous &&
-        previous.text === question &&
-        (!continuous || previous.projectId === projectId) &&
-        previous.sourceConversationId === (sourceId || undefined) &&
-        previous.presentation === presentation &&
-        JSON.stringify(previous.discussion) === JSON.stringify(discussion) &&
-        (previous.intent ?? 'question') === (action?.intent ?? 'question') &&
-        JSON.stringify(previous.references) === JSON.stringify(questionReferences)
+        previous && (!continuous || previous.projectId === projectId) && (retrySuggestions || (
+          previous.text === question &&
+          (!continuous || previous.sourceConversationId === (sourceId || undefined)) &&
+          (previous.intent ?? 'question') === (action?.intent ?? 'question') &&
+          JSON.stringify(previous.references) === JSON.stringify(questionReferences)
+        ))
           ? previous
           : {
             requestId: crypto.randomUUID(), text: question, references: questionReferences,
             ...(continuous ? { projectId } : {}),
-            ...(presentation ? { presentation } : {}), ...(discussion ? { discussion } : {}),
             ...(action?.intent ? { intent: action.intent } : {}),
             ...(sourceId ? { sourceConversationId: sourceId } : {}),
           };
@@ -460,36 +451,7 @@ export function TeacherChatPanel({
     (request) => request.status === 'preparing' || request.status === 'running'
   );
   const helpUnavailable = busy || !topicEnabled || Boolean(running);
-  const updateDiscussion = async (action: TeacherDiscussionAction['action'], itemId?: string) => {
-    const current = topicRef.current;
-    if (!current?.discussion || helpUnavailable) return;
-    const version = generation.current;
-    setBusy(true);
-    setError('');
-    try {
-      const next = await teacherApi.updateDiscussion(topicBase, endpointId, {
-        ...(continuous ? { projectId } : {}),
-        toolId: current.discussion.id, revision: current.discussion.revision, action, ...(itemId ? { itemId } : {}),
-      });
-      if (version === generation.current) { consume(next); setFocus(null); }
-    } catch (e) {
-      if (version === generation.current) setError(e instanceof Error ? e.message : '内容还没更新，请再试一次。');
-    } finally { if (version === generation.current) setBusy(false); }
-  };
-  const focusItem = (id: string, label: string) => {
-    if (!topic) return;
-    setFocus({ topicId: topic.id, id, label });
-    inputRef.current?.focus();
-  };
-  const structureIdeas = () => {
-    if (!topic?.discussion) return;
-    setFocus(null);
-    void send({ text: '把我留下的想法理一理，看看它们怎么联系。', discussion: {
-      toolId: topic.discussion.id, revision: topic.discussion.revision, transition: 'structure',
-    } });
-  };
-  const askForSuggestions = () => void send({ text: '帮我看看', intent: 'suggestions' });
-  const askForGuidance = () => void send({ text: '我也说不清，你带我看看', intent: 'guided-help' });
+  const askForSuggestions = () => void send({ text: '继续看看👀', intent: 'suggestions' });
   const changeText = (next: string) => { setText(next); persistDraft(next, references, pending.current); };
   const removeReferences = () => { setReferences([]); persistDraft(text, [], pending.current); };
   const questions = definition?.suggested_questions ?? [];
@@ -517,13 +479,6 @@ export function TeacherChatPanel({
             className="shrink-0 rounded-lg px-2 text-xs text-muted-foreground hover:bg-white hover:text-foreground disabled:opacity-40">新话题</button>
         </div>}
       </div>}
-      {discussionEnabled && topic?.discussion && <TeacherDiscussionPanel key={topic.id} discussion={topic.discussion}
-        disabled={helpUnavailable} focusId={activeFocus?.id}
-        onAction={(action, itemId) => void updateDiscussion(action, itemId)} onFocus={focusItem} onStructure={structureIdeas}
-        onDiscuss={(id, question) => {
-          focusItem(id, question);
-          void send({ text: question, discussion: { toolId: topic.discussion!.id, revision: topic.discussion!.revision, focusId: id } });
-        }} />}
       <div ref={scrollRef} className="consultation-messages min-h-0 flex-1 overflow-y-auto px-5 py-6"
         onScroll={() => { const pane = scrollRef.current; if (!pane) return;
           scrollPosition.current = pane.scrollTop;
@@ -559,16 +514,14 @@ export function TeacherChatPanel({
               : request.status === 'completed' && <>
                 <TeacherReply text={request.response} />
                 <div className="consultation-follow-ups" aria-label="可以和智能体聊的问题">
-                  {request.suggestedQuestions?.map((question) => <button key={question} type="button" disabled={helpUnavailable} onClick={() => void send({ text: question })} className="consultation-follow-up"><span className="min-w-0 flex-1">{question}</span><ChevronRight className="h-4 w-4 shrink-0 opacity-70" aria-hidden="true" /></button>)}
+                  {request.suggestedQuestions?.map((question, index) => <button key={`${request.id}:${index}`} type="button" disabled={helpUnavailable} onClick={() => void send({ text: question })} className="consultation-follow-up"><span className="min-w-0 flex-1">{question}</span><ChevronRight className="h-4 w-4 shrink-0 opacity-70" aria-hidden="true" /></button>)}
                 </div>
-                <button type="button" disabled={helpUnavailable} onClick={askForGuidance} className="consultation-guided-help min-h-10 text-left text-xs leading-6 underline decoration-current/30 underline-offset-4 disabled:cursor-not-allowed disabled:opacity-50">我也说不清，你带我看看</button>
               </>}
-            {['failed', 'cancelled', 'interrupted'].includes(request.status) && <button type="button" disabled={helpUnavailable} onClick={askForSuggestions} className="consultation-guided-help min-h-10 text-xs underline underline-offset-4 disabled:opacity-50">再请智能体看看</button>}
-          </> : request.response ? <TeacherReply text={request.response} /> : <div className="text-[13px] leading-7">{['running', 'preparing'].includes(request.status) ? <span role="status" className="inline-flex items-center gap-2 text-muted-foreground"><Loader2 className="h-3.5 w-3.5 animate-spin motion-reduce:animate-none" />{request.discussionContext ? '正在梳理你的新想法…' : `${label}正在想…`}</span> : ['cancelled', 'interrupted'].includes(request.status) ? '这次先停在这里。想继续时可以再说说。' : ''}</div>}
-          {discussionEnabled && request.intent !== 'suggestions' && request.status === 'completed' && topic.discussion?.status !== 'active' && topic.discussion?.status !== 'offered' && Boolean(request.suggestedQuestions?.length) && <div className="consultation-follow-ups" aria-label="接着聊">
-            {request.suggestedQuestions?.map(question => <button type="button" key={question} disabled={helpUnavailable} onClick={() => void send({ text: question })} className="consultation-follow-up"><span className="min-w-0 flex-1">{question}</span><ChevronRight className="h-4 w-4 shrink-0 opacity-70" aria-hidden="true" /></button>)}
+            {['failed', 'cancelled', 'interrupted'].includes(request.status) && <button type="button" disabled={helpUnavailable} onClick={askForSuggestions} className="consultation-retry">继续看看👀</button>}
+          </> : request.response ? <TeacherReply text={request.response} /> : <div className="text-[13px] leading-7">{['running', 'preparing'].includes(request.status) ? <span role="status" className="inline-flex items-center gap-2 text-muted-foreground"><Loader2 className="h-3.5 w-3.5 animate-spin motion-reduce:animate-none" />{label}正在想…</span> : ['cancelled', 'interrupted'].includes(request.status) ? '这次先停在这里。想继续时可以再说说。' : ''}</div>}
+          {request.intent !== 'suggestions' && request.status === 'completed' && Boolean(request.suggestedQuestions?.length) && <div className="consultation-follow-ups" aria-label="接着聊">
+            {request.suggestedQuestions?.map((question, index) => <button type="button" key={`${request.id}:${index}`} disabled={helpUnavailable} onClick={() => void send({ text: question })} className="consultation-follow-up"><span className="min-w-0 flex-1">{question}</span><ChevronRight className="h-4 w-4 shrink-0 opacity-70" aria-hidden="true" /></button>)}
           </div>}
-          {request.discussionError && <p className="text-xs leading-6 text-muted-foreground">{request.discussionError}</p>}
           {request.unparsedResponse && <details className="min-w-0 text-xs text-muted-foreground">
             <summary className="cursor-pointer">查看收到的原始内容</summary>
             <pre className="mt-2 max-h-64 overflow-auto whitespace-pre-wrap break-words rounded-lg border p-3">{request.unparsedResponse}</pre>
@@ -602,13 +555,13 @@ export function TeacherChatPanel({
         </details>}
         {references.length > 0 && <div className="mb-2 rounded-lg bg-white p-3 text-xs"><p className="line-clamp-3 whitespace-pre-wrap">{references.map((ref) => ref.text).join('\n')}</p><button type="button" className="mt-1 underline" onClick={removeReferences}>移除引用</button></div>}
         <div className="consultation-composer rounded-2xl border bg-white p-3 focus-within:ring-2 focus-within:ring-black/5">
-          {activeFocus && <DiscussionFocus label={activeFocus.label} onClear={() => setFocus(null)} />}
           <textarea ref={inputRef} aria-label={`向${label}提问`} value={text} disabled={busy} maxLength={6000} onChange={(e) => changeText(e.target.value)} placeholder="和老师聊聊" rows={2}
             onKeyDown={(e) => { if (e.key === 'Enter' && !e.shiftKey && !e.nativeEvent.isComposing) { e.preventDefault(); void send(); } }}
             className="min-h-[60px] w-full resize-none border-0 bg-transparent text-[13px] leading-6 outline-none placeholder:text-muted-foreground/65" />
-          <div className="mt-2 flex items-center justify-between gap-2" data-testid="consultation-composer-actions">
-            {discussionEnabled ? <button type="button" disabled={helpUnavailable} onClick={askForSuggestions} className="consultation-help-prompt flex min-h-9 cursor-pointer items-center gap-1.5 rounded-full px-3 text-xs transition-colors disabled:cursor-not-allowed disabled:opacity-50">帮我看看<ChevronRight className="h-3 w-3" aria-hidden="true" /></button>
-              : <span />}
+          <div className="mt-2 flex min-h-11 items-center justify-between gap-2" data-testid="consultation-composer-actions">
+            <div className="min-w-0 flex-1">
+              {!draftRevision && !text.trim() && <button type="button" disabled={helpUnavailable} onClick={askForSuggestions} className="consultation-hint">继续看看👀</button>}
+            </div>
             {running ? <button type="button" className="rounded-lg border px-3 py-2 text-xs" onClick={() => void teacherApi.cancel(topicBase, endpointId, running.id).then(consume).catch(() => setError('暂时无法停止，请稍后重试。'))}>停止回复</button>
             : <button type="submit" aria-label="提问" title={busy ? '正在发送…' : '发送'} disabled={busy || !topicEnabled || !text.trim()} className="consultation-send flex h-8 w-8 items-center justify-center rounded-full text-white disabled:opacity-30"><ArrowUp className="h-4 w-4" /></button>}
           </div>
diff --git a/src/pages/Chat/TeacherDiscussionPanel.tsx b/src/pages/Chat/TeacherDiscussionPanel.tsx
deleted file mode 100644
index 5375154f..00000000
--- a/src/pages/Chat/TeacherDiscussionPanel.tsx
+++ /dev/null
@@ -1,94 +0,0 @@
-import { useState } from 'react';
-import { ArrowDown, ArrowRight, Check, ChevronDown, ChevronUp, GitBranch, Layers3, MessageCircle, Puzzle, Sparkles, X } from 'lucide-react';
-import type { TeacherDiscussionAction } from '../../../shared/coding-teacher';
-import type { TeacherDiscussion, TeacherStructureNode } from '../../../shared/teacher-discussion';
-import './teacher-discussion.css';
-
-type Action = TeacherDiscussionAction['action'];
-export function TeacherDiscussionPanel({ discussion, disabled, focusId, onAction, onFocus, onDiscuss, onStructure }: {
-  discussion: TeacherDiscussion;
-  disabled: boolean;
-  focusId?: string;
-  onAction(action: Action, itemId?: string): void;
-  onFocus(id: string, label: string): void;
-  onDiscuss(id: string, text: string): void;
-  onStructure(): void;
-}) {
-  const [folded, setFolded] = useState(false);
-  const content = discussion.content;
-  const active = discussion.status === 'active';
-  const offered = discussion.status === 'offered';
-  const collapsed = folded || (!active && !offered);
-  const Icon = content.kind === 'ideas' ? Puzzle : content.kind === 'structure' ? Layers3 : content.kind === 'flow' ? GitBranch : Layers3;
-  const select = (id: string, label: string) => { if (active && !disabled) onFocus(id, label); };
-  const tree = (parentId?: string): React.ReactNode => content.kind === 'structure' && content.nodes.filter(node => node.parentId === parentId).map((node: TeacherStructureNode) => (
-    <li key={node.id}>
-      <button type="button" disabled={!active || disabled} aria-pressed={focusId === node.id} className="discussion-node" onClick={() => select(node.id, node.label)}>
-        {node.relation && <span className="discussion-relation">{node.relation}</span>}<span>{node.label}</span>
-      </button>
-      {content.nodes.some(child => child.parentId === node.id) && <ul>{tree(node.id)}</ul>}
-    </li>
-  ));
-  return <section className="teacher-discussion" data-testid="teacher-discussion" data-kind={content.kind} data-collapsed={collapsed} aria-label="一起整理的内容">
-    <header className="discussion-heading">
-      <span className="discussion-emblem"><Icon size={17} aria-hidden="true" /></span>
-      <div><span className="discussion-eyebrow">{offered ? '要不要一起理一理？' : active ? '我们正在一起想' : discussion.status === 'finished' ? '先留在这里' : '想法还在，慢慢聊'}</span><h3 title={content.title}>{content.title}</h3></div>
-      {(active || offered) && <button type="button" className="discussion-icon" aria-label={collapsed ? '展开整理内容' : '收起整理内容'} aria-expanded={!collapsed} onClick={() => setFolded(!folded)}>{collapsed ? <ChevronDown size={16} /> : <ChevronUp size={16} />}</button>}
-      {!active && !offered && <button type="button" className="discussion-resume" disabled={disabled} onClick={() => { setFolded(false); onAction('resume'); }}>接着改</button>}
-    </header>
-    {!collapsed && <>
-      <div className="discussion-content" tabIndex={0} aria-label="整理内容，可滚动查看">
-        {content.kind === 'ideas' && <div className="discussion-ideas">
-          {(['kept', 'suggested', 'aside'] as const).map(state => {
-            const items = content.items.filter(item => item.state === state);
-            return items.length > 0 && <div key={state} className={`discussion-idea-group discussion-${state}`}>
-              <p className="discussion-group-label">{state === 'kept' ? '我想留下的' : state === 'suggested' ? '老师想到的，你来决定' : '暂时放一边'}</p>
-              {items.map(item => <div key={item.id} className="discussion-idea" data-selected={focusId === item.id}>
-                {item.parentId && <span className="discussion-relation">关于「{content.items.find(parent => parent.id === item.parentId)?.text}」</span>}
-                <button type="button" className="discussion-idea-text" disabled={!active || disabled} onClick={() => select(item.id, item.text)} aria-pressed={focusId === item.id}>
-                  <span className="discussion-piece"><Puzzle size={14} /></span><span>{item.text}</span>
-                </button>
-                {active && <div className="discussion-item-actions">
-                  {state !== 'kept' ? <button disabled={disabled} onClick={() => onAction('keep-idea', item.id)}><Check size={12} />留下</button> : <button aria-pressed={content.firstItemId === item.id} disabled={disabled} onClick={() => onAction('first-idea', item.id)}>{content.firstItemId === item.id ? <><Check size={12} />先想这个</> : '从这里开始'}</button>}
-                  {state !== 'aside' && <button disabled={disabled} onClick={() => onAction('aside-idea', item.id)}>先放一边</button>}
-                </div>}
-              </div>)}
-            </div>;
-          })}
-        </div>}
-        {content.kind === 'structure' && <ul className="discussion-tree">{tree()}</ul>}
-        {content.kind === 'flow' && <div className="discussion-flow">
-          {content.nodes.map((node, index) => <div key={node.id} className="discussion-flow-step">
-            <button type="button" className="discussion-node" data-node-kind={node.kind} aria-pressed={focusId === node.id} disabled={!active || disabled} onClick={() => select(node.id, node.label)}>
-              <span className="discussion-step-number">{index + 1}</span><span><small>{node.kind === 'event' ? '当这件事发生' : node.kind === 'condition' ? '看看是否满足' : '接下来'}</small>{node.label}</span>
-            </button>
-            {content.edges.filter(edge => edge.from === node.id).map(edge => <button type="button" key={edge.id} className="discussion-edge" disabled={!active || disabled} onClick={() => select(edge.to, content.nodes.find(next => next.id === edge.to)?.label ?? '')}>
-              <ArrowDown size={12} /><span>{edge.label && <b>{edge.label} → </b>}{content.nodes.find(next => next.id === edge.to)?.label}</span><span className="discussion-destination">{content.nodes.findIndex(next => next.id === edge.to) + 1}</span>
-            </button>)}
-          </div>)}
-        </div>}
-        {content.kind === 'comparison' && <div className="discussion-comparison" role="table" aria-label={content.title}>
-          {content.rows.map(row => <div className="discussion-comparison-row" key={row.id} role="rowgroup">
-            <h4>{row.label}</h4><div className="discussion-comparison-cells" style={{ gridTemplateColumns: `repeat(${content.columns.length === 3 ? 3 : 2}, minmax(0, 1fr))` }} role="row">
-              {content.columns.map(column => <div key={column.id} role="cell" className="discussion-comparison-cell" data-selected={focusId === `${row.id}:${column.id}`}>
-                <b>{column.label}</b><p>{row.cells.find(cell => cell.columnId === column.id)?.text}</p>
-                {active && <button type="button" disabled={disabled} onClick={() => onDiscuss(`${row.id}:${column.id}`, `聊聊「${row.label}」时，「${column.label}」这一点：${row.cells.find(cell => cell.columnId === column.id)?.text ?? ''}`)}><MessageCircle size={12} />聊聊这一点</button>}
-              </div>)}
-            </div>
-          </div>)}
-        </div>}
-      </div>
-      <footer className="discussion-footer">
-        {offered ? <><button type="button" className="discussion-primary" disabled={disabled} onClick={() => onAction('enter')}><Sparkles size={13} />用这个一起想</button><button type="button" disabled={disabled} onClick={() => onAction('pause')}>先不用</button></> : <>
-          {content.kind === 'ideas' && <button type="button" className="discussion-next" disabled={disabled || !content.items.some(item => item.state === 'kept')} onClick={onStructure}>把想法理一理<ArrowRight size={13} /></button>}
-          {content.kind === 'structure' && discussion.previousIdeas && <button type="button" className="discussion-next" disabled={disabled} onClick={() => onAction('back-ideas')}>回去补充想法</button>}
-          <div className="discussion-footer-actions"><button type="button" disabled={disabled} onClick={() => onAction('pause')}>只聊天</button><button type="button" className="discussion-primary" disabled={disabled} onClick={() => onAction('finish')}><Check size={13} />先这些</button></div>
-        </>}
-      </footer>
-    </>}
-  </section>;
-}
-
-export function DiscussionFocus({ label, onClear }: { label: string; onClear(): void }) {
-  return <div className="discussion-focus"><MessageCircle size={13} /><span>接着聊：{label}</span><button type="button" aria-label="取消讨论焦点" onClick={onClear}><X size={13} /></button></div>;
-}
diff --git a/src/pages/Chat/classroom-workspace.css b/src/pages/Chat/classroom-workspace.css
index 5a0d72db..057c45c3 100644
--- a/src/pages/Chat/classroom-workspace.css
+++ b/src/pages/Chat/classroom-workspace.css
@@ -49,9 +49,11 @@
 .classroom-consultation-resizer { position: absolute; inset: 0 auto 0 -4px; width: 8px; z-index: 2; cursor: col-resize; }
 .classroom-consultation-resizer:hover, .classroom-consultation-resizer:focus-visible { background: #7994b533; }
 .consultation-pane { background: #fffdf8; color: #30465f; }
-.consultation-help-prompt, .consultation-guided-help { color: #536747; }
-.consultation-help-prompt { background: #f1f5ea; border: 1px solid #dfe7d5; }
-.consultation-help-prompt:hover:not(:disabled) { background: #e6eedc; border-color: #bacba8; }
+.consultation-hint, .consultation-retry { display: inline-flex; align-items: center; justify-content: center; align-self: flex-start; min-height: 44px; max-width: 100%; padding: 8px 16px; border: 1.5px solid #e3ce8f; border-radius: 16px 16px 16px 6px; background: #fff2c9; color: #6f5127; box-shadow: 0 3px 0 #e7d7a6, inset 0 1px 0 #fff9e8; font-size: 14px; font-weight: 600; line-height: 24px; cursor: pointer; transition: background-color 160ms ease, border-color 160ms ease, box-shadow 160ms ease, transform 160ms ease; }
+.consultation-hint:hover:not(:disabled), .consultation-retry:hover:not(:disabled) { background: #ffe9a9; border-color: #d6b76f; }
+.consultation-hint:active:not(:disabled), .consultation-retry:active:not(:disabled) { transform: translateY(2px); box-shadow: 0 1px 0 #e7d7a6, inset 0 1px 0 #fff9e8; }
+.consultation-hint:disabled, .consultation-retry:disabled { cursor: not-allowed; opacity: 0.5; }
+@media (prefers-reduced-motion: reduce) { .consultation-hint, .consultation-retry { transition: none; } .consultation-hint:active:not(:disabled), .consultation-retry:active:not(:disabled) { transform: none; } }
 .consultation-pane button:focus-visible { outline: 2px solid #71845f; outline-offset: 3px; }
 .consultation-suggestion { border-color: #e0e6d6; color: #718163; }
 .consultation-suggestion:hover { border-color: #bac9aa; background: #f4f7ee; }
diff --git a/src/pages/Chat/teacher-discussion.css b/src/pages/Chat/teacher-discussion.css
deleted file mode 100644
index a79bfb78..00000000
--- a/src/pages/Chat/teacher-discussion.css
+++ /dev/null
@@ -1,68 +0,0 @@
-.teacher-discussion { display:flex; flex-direction:column; flex-shrink:0; min-height:0; max-height:46%; margin:12px 12px 0; border:1px solid #d6e2cf; border-radius:16px; background:#fff; overflow:hidden; box-shadow:0 3px 0 #dce7d780; font-size:12px; color:#3b4934; }
-.teacher-discussion[data-kind="structure"] { border-color:#d6d7f1; }
-.teacher-discussion[data-kind="flow"] { border-color:#c8e3ee; }
-.teacher-discussion[data-kind="comparison"] { border-color:#efdcad; }
-.teacher-discussion button { cursor:pointer; transition:background 150ms, border-color 150ms; }
-.teacher-discussion button:disabled { cursor:default; opacity:.65; }
-.teacher-discussion button:focus-visible { outline:2px solid #607c45; outline-offset:-2px; }
-.discussion-heading { display:flex; align-items:center; gap:8px; flex-shrink:0; padding:11px 12px; background:#f1f6e9; }
-[data-kind="structure"] .discussion-heading { background:#f0eefa; }
-[data-kind="flow"] .discussion-heading { background:#eaf5fb; }
-[data-kind="comparison"] .discussion-heading { background:#fff5d9; }
-.discussion-heading>div { flex:1; min-width:0; }
-.discussion-heading h3 { margin:3px 0 0; font-weight:650; font-size:13px; display:-webkit-box; -webkit-line-clamp:2; -webkit-box-orient:vertical; overflow:hidden; overflow-wrap:anywhere; line-height:1.5; }
-.discussion-eyebrow { color:#667158; font-size:10px; }
-.discussion-emblem { display:grid; place-items:center; flex-shrink:0; width:30px; height:30px; border:1px solid #d8e2ce; border-radius:9px; background:#fff; }
-.discussion-icon { display:grid; place-items:center; width:28px; height:32px; flex-shrink:0; }
-.discussion-content { overflow-y:auto; overflow-x:hidden; min-height:0; padding:12px; overscroll-behavior:contain; scrollbar-width:thin; }
-.discussion-group-label { font-size:10px; font-weight:600; color:#69715f; margin:0 0 7px; }
-.discussion-idea-group+.discussion-idea-group { margin-top:14px; }
-.discussion-idea { border:1px solid #dae5cd; border-radius:10px; background:#f4f8e9; padding:8px; margin-top:6px; }
-.discussion-suggested .discussion-idea { background:#fff6dd; border-color:#eedbaa; border-style:dashed; }
-.discussion-aside .discussion-idea { background:#f4f3f1; border-color:#e2e0d9; color:#6d7166; }
-.discussion-idea[data-selected="true"], .discussion-node[aria-pressed="true"], .discussion-comparison-cell[data-selected="true"] { outline:2px solid #768954; outline-offset:-2px; }
-.discussion-idea-text { display:flex; align-items:flex-start; gap:7px; text-align:left; width:100%; line-height:1.65; overflow-wrap:anywhere; }
-.discussion-piece { padding-top:3px; flex-shrink:0; color:#849464; }
-.discussion-item-actions { display:flex; justify-content:flex-end; gap:13px; flex-wrap:wrap; margin-top:7px; }
-.discussion-item-actions button { display:flex; align-items:center; gap:3px; min-height:28px; font-size:10px; color:#596546; }
-.discussion-item-actions button:hover:not(:disabled) { text-decoration:underline; }
-.discussion-item-actions button[aria-pressed="true"] { font-weight:700; }
-.discussion-relation { display:block; font-size:10px; color:#777a6b; margin:0 0 4px; overflow-wrap:anywhere; }
-.discussion-tree, .discussion-tree ul { list-style:none; padding:0; margin:0; }
-.discussion-tree ul { margin-left:10px; padding-left:10px; border-left:2px solid #dbd7ed; }
-.discussion-tree li { margin-top:7px; }
-.discussion-node { width:100%; border:1px solid #e1dcf2; border-radius:9px; background:#f5f2ff; padding:9px 10px; text-align:left; line-height:1.6; overflow-wrap:anywhere; }
-.discussion-node:hover:not(:disabled) { background:#ece8fa; }
-.discussion-flow-step+.discussion-flow-step { margin-top:10px; }
-.discussion-flow .discussion-node { display:flex; gap:8px; background:#eff8fb; border-color:#cbe3eb; }
-.discussion-flow .discussion-node[data-node-kind="condition"] { background:#fff7df; border-color:#efdcaa; }
-.discussion-flow .discussion-node[data-node-kind="outcome"] { background:#edf5e7; border-color:#d4e3c7; }
-.discussion-node small { display:block; font-size:9px; opacity:.8; }
-.discussion-step-number,.discussion-destination { display:grid; place-items:center; flex-shrink:0; width:20px; height:20px; border-radius:6px; background:#fff; border:1px solid #d6dfd0; font-size:10px; }
-.discussion-edge { display:flex; align-items:center; gap:5px; width:100%; padding:7px 4px 0 12px; text-align:left; font-size:10px; line-height:1.5; color:#627160; }
-.discussion-edge>span:first-of-type { flex:1; min-width:0; overflow-wrap:anywhere; }
-.discussion-edge svg { flex-shrink:0; }
-.discussion-edge b { font-weight:600; }
-.discussion-comparison-row+.discussion-comparison-row { margin-top:12px; }
-.discussion-comparison-row h4 { font-weight:600; font-size:11px; margin:0 0 7px; }
-.discussion-comparison-cells { display:grid; gap:6px; }
-.discussion-comparison-cell { min-width:0; display:flex; flex-direction:column; padding:9px 8px; background:#f4f2fc; border:1px solid #e1dcf1; border-radius:10px; overflow-wrap:anywhere; }
-.discussion-comparison-cell:nth-child(even) { background:#eef6e8; border-color:#dae6cc; }
-.discussion-comparison-cell>b { font-size:10px; }
-.discussion-comparison-cell p { flex:1; line-height:1.7; font-size:11px; margin:7px 0 8px; white-space:pre-wrap; }
-.discussion-comparison-cell button { display:flex; align-items:center; flex-wrap:wrap; gap:4px; font-size:10px; min-height:30px; color:#506144; text-align:left; }
-.discussion-footer { flex-shrink:0; padding:8px 11px; border-top:1px solid #eef0e8; display:flex; align-items:center; justify-content:space-between; gap:8px; flex-wrap:wrap; }
-.discussion-footer button,.discussion-resume { display:inline-flex; align-items:center; justify-content:center; gap:4px; min-height:32px; padding:5px 7px; font-size:11px; border-radius:8px; }
-.discussion-footer-actions { display:flex; align-items:center; gap:7px; justify-content:flex-end; width:100%; }
-.discussion-footer .discussion-primary { background:#526e3c; color:#fff; padding:6px 12px; }
-.discussion-footer .discussion-primary:hover:not(:disabled) { background:#405a2b; }
-.discussion-next { color:#5a6650; }
-.discussion-next:hover:not(:disabled), .discussion-resume:hover:not(:disabled) { background:#eaf0df; }
-.discussion-resume { flex-shrink:0; background:white; border:1px solid #dce3d1; }
-.discussion-focus { display:flex; align-items:center; gap:6px; padding:7px 9px; margin-bottom:6px; border:1px solid #dedfcd; background:#f4f5e8; border-radius:9px; font-size:11px; }
-.discussion-focus>span { min-width:0; flex:1; overflow:hidden; white-space:nowrap; text-overflow:ellipsis; }
-.discussion-focus button { display:grid; place-items:center; width:26px; height:26px; cursor:pointer; }
-.consultation-pane>form { flex-shrink:0; }
-.teacher-discussion~.consultation-messages { padding-top:16px; padding-bottom:8px; }
-@media (max-height:650px) { .teacher-discussion { max-height:40%; } .discussion-heading { padding:7px 10px; } }
-@media (prefers-reduced-motion:reduce) { .teacher-discussion button { transition:none; } }
diff --git a/tests/e2e/fixtures/teacher-discussion-api.ts b/tests/e2e/fixtures/teacher-discussion-api.ts
deleted file mode 100644
index 98c0b9c7..00000000
--- a/tests/e2e/fixtures/teacher-discussion-api.ts
+++ /dev/null
@@ -1,75 +0,0 @@
-// Deterministic responses for layout/interaction tests only; never imported by the app.
-import type { TeacherDefinition, TeacherTopic, TeacherSend, TeacherDiscussionAction } from '../../../shared/coding-teacher';
-import type { TeacherDiscussionContent } from '../../../shared/teacher-discussion';
-const definition: TeacherDefinition = { schema_version: 1, teacher_id: 'coding-teacher', name: '麦洛智能体', description: '', avatar_id: 'avatar-01', welcome_message: '', suggested_questions: [], system_prompt: '测试', skills: [], model: { model_id: 'fixture', reasoning_choice: { mode: 'default' } }, limits: { max_input_tokens: 8000, max_output_tokens: 1500 } };
-const samples: Record<string, TeacherDiscussionContent> = {
-  ideas: { kind: 'ideas', title: '我的小狗世界', items: [{ id: 'dog', text: '养一只自己的小狗', state: 'kept' }, { id: 'breed', parentId: 'dog', text: '是一只柯基', state: 'kept' }, { id: 'garden', text: '有一片可以种东西的花园', state: 'kept' }, { id: 'food', parentId: 'garden', text: '种出来的东西可以喂小狗', state: 'suggested' }] },
-  structure: { kind: 'structure', title: '小狗和花园怎么连起来？', nodes: [{ id: 'world', label: '我的小狗世界' }, { id: 'dog', label: '照顾小狗', parentId: 'world' }, { id: 'breed', label: '一只柯基', parentId: 'dog', relation: '它的样子' }, { id: 'garden', label: '种植花园', parentId: 'world' }, { id: 'food', label: '收获食物，喂给小狗', parentId: 'garden', relation: '收获后' }] },
-  flow: { kind: 'flow', title: '我回家时，小狗会做什么？', nodes: [{ id: 'home', kind: 'event', label: '我回到家' }, { id: 'awake', kind: 'condition', label: '小狗醒着吗？' }, { id: 'welcome', kind: 'outcome', label: '跑过来欢迎我' }, { id: 'sleep', kind: 'outcome', label: '先睡觉，醒来再过来' }], edges: [{ id: 'one', from: 'home', to: 'awake' }, { id: 'yes', from: 'awake', to: 'welcome', label: '醒着' }, { id: 'no', from: 'awake', to: 'sleep', label: '睡着了' }] },
-  comparison: { kind: 'comparison', title: '哪一种更像你想要的小狗？', columns: [{ id: 'click', label: '点了才回应' }, { id: 'active', label: '会主动找我' }], rows: [{ id: 'home', label: '刚回到家的时候', cells: [{ columnId: 'click', text: '等我点一下，才跳起来。' }, { columnId: 'active', text: '看见我就跑过来，还带着玩具。' }] }, { id: 'busy', label: '我忙着种东西的时候', cells: [{ columnId: 'click', text: '安静等着，不打扰我。' }, { columnId: 'active', text: '有时来蹭一蹭，可能也会打断我。' }] }] },
-};
-const scenario = new URLSearchParams(location.search).get('kind') ?? 'ideas';
-let current: TeacherTopic = { schemaVersion: 1, revision: 1, id: 'discussion-fixture', accountId: 'fixture', projectId: 'fixture', sourceConversationId: 'project', definition, version: 1, createdAt: 'now', updatedAt: 'now', requests: Array.from({ length: 8 }, (_, i) => ({ id: `r${i}`, text: i === 7 ? '我还没想好，我们边聊边想。' : '我希望这个游戏更有意思。', references: [], createdAt: 'now', sourceCursor: { workerGeneration: 0, seq: i }, sourceCapturedAt: 'now', includedSourceMessageIds: [], omittedMessages: 0, status: 'completed', response: i === 7 ? '可以，我们先把已经想到的放在一起。哪里还不确定，就留着继续聊。' : '先从你最在意的一个小地方开始想。', ...(scenario === 'ordinary' && i === 7 ? { suggestedQuestions: ['有什么好玩的想法？'] } : {}) })), ...(samples[scenario] ? { discussion: { id: 'tool', revision: 1, status: 'active', content: structuredClone(samples[scenario]), ...(scenario === 'structure' ? { previousIdeas: structuredClone(samples.ideas) as Extract<TeacherDiscussionContent, { kind: 'ideas' }> } : {}) } } : {}) };
-const stream = Object.assign(new EventTarget(), { close() {}, onerror: null, onopen: null });
-if (scenario === 'rich-text') {
-  current.requests = [{
-    ...current.requests[0], text: '帮我看看项目和最近的讨论',
-    response: '## 项目建议\n\n**先核对已有设计**，再决定下一步。\n\n- 检查入口文件\n- 保留当前玩法\n\n| 文件 | 作用 | 需要确认 |\n| --- | --- | --- |\n| src/main.ts | 初始化项目 | 游戏循环与计时 |\n| public/assets | 图片资源 | 构建后路径是否可用 |\n\n```js\nconst message = "保留字符串里的\\n，不把它变成实际换行";\nconst resourcePath = "/assets/" + "very-long-file-name-".repeat(15);\n```\n\n运动距离：$s = vt$。\n\n![项目截图](https://example.com/teacher-preview.png)\n\n[项目说明](https://example.com/readme)\n\n> 先验证观察到的现象。',
-    discussionError: '这次整理没有完成，先保留原来的内容。',
-    unparsedResponse: '{"reply":"正文已保留","tool":{"kind":"structure",',
-  }];
-}
-let timer: ReturnType<typeof setTimeout> | undefined;
-const snapshot = () => { current.revision++; stream.dispatchEvent(new MessageEvent('snapshot', { data: JSON.stringify(current) })); };
-export const teacherApi = {
-  catalog: async () => ({ items: [{ teacher_id: definition.teacher_id, version: 1, is_default: true, definition }] }),
-  config: async () => ({ enabled: true, definition }),
-  list: async () => ({ items: [{ id: current.id, title: '我的小狗世界' }], lastSelectedTopicId: current.id }),
-  read: async () => structuredClone(current),
-  create: async () => structuredClone(current),
-  events: async () => stream,
-  updateDiscussion: async (_base: string, _id: string, input: TeacherDiscussionAction) => {
-    const tool = current.discussion!;
-    if (input.action === 'pause' || input.action === 'finish') tool.status = input.action === 'pause' ? 'paused' : 'finished';
-    else tool.status = 'active';
-    if (input.action === 'back-ideas' && tool.previousIdeas) {
-      if (tool.content.kind === 'structure') tool.previousStructure = structuredClone(tool.content);
-      tool.content = structuredClone(tool.previousIdeas);
-    }
-    if (tool.content.kind === 'ideas') {
-      const item = tool.content.items.find(item => item.id === input.itemId);
-      if (item && input.action === 'keep-idea') item.state = 'kept';
-      if (item && input.action === 'aside-idea') item.state = 'aside';
-      if (item && input.action === 'first-idea') tool.content.firstItemId = item.id;
-    }
-    tool.revision++;
-    snapshot();
-    return structuredClone(current);
-  },
-  send: async (_base: string, _id: string, input: TeacherSend) => {
-    current.requests.push({ id: input.requestId, text: input.text, references: [], createdAt: 'now', status: 'running', sourceCursor: { workerGeneration: 0, seq: 1 }, sourceCapturedAt: 'now', includedSourceMessageIds: [], omittedMessages: 0, response: '', discussionContext: input.discussion });
-    snapshot();
-    timer = setTimeout(() => {
-      const request = current.requests.at(-1)!;
-      request.status = 'completed';
-      request.response = '好，已经把你的补充放在上面了。我们可以接着想。';
-      const tool = current.discussion;
-      if (tool?.status === 'active' && input.discussion) {
-        if (input.discussion.transition === 'structure' && tool.content.kind === 'ideas') {
-          tool.previousIdeas = structuredClone(tool.content);
-          tool.content = structuredClone(samples.structure);
-        } else if (tool.content.kind === 'ideas') tool.content.items.push({ id: `new-${tool.revision}`, text: input.text, state: 'kept' });
-        else if (tool.content.kind === 'structure') tool.content.nodes.push({ id: `new-${tool.revision}`, label: input.text, parentId: 'world' });
-        else if (tool.content.kind === 'flow') tool.content.nodes.push({ id: `new-${tool.revision}`, label: input.text, kind: 'outcome' });
-        else tool.content.rows.push({ id: `new-${tool.revision}`, label: '再想想这一点', cells: tool.content.columns.map(col => ({ columnId: col.id, text: '先观察实际玩的时候有什么不同。' })) });
-        tool.revision++;
-      }
-      snapshot();
-    }, 350);
-    return structuredClone(current);
-  },
-  cancel: async () => { clearTimeout(timer); current.requests.at(-1)!.status = 'cancelled'; snapshot(); return structuredClone(current); },
-};
-export const teacherTopicsPath = () => '/fixture';
-
-export const legacyTopicBase = (base: string) => base;
diff --git a/tests/e2e/fixtures/teacher-reply-api.ts b/tests/e2e/fixtures/teacher-reply-api.ts
new file mode 100644
index 00000000..f1dda371
--- /dev/null
+++ b/tests/e2e/fixtures/teacher-reply-api.ts
@@ -0,0 +1,62 @@
+// Deterministic responses for layout/interaction tests only; never imported by the app.
+import type { TeacherDefinition, TeacherTopic, TeacherSend } from '../../../shared/coding-teacher';
+const definition: TeacherDefinition = { schema_version: 1, config_id: 'coding-teacher', teacher_id: 'coding-teacher', name: '麦洛智能体', description: '', avatar_id: 'avatar-01', welcome_message: '', suggested_questions: [], system_prompt: '测试', skills: [], model: { model_id: 'fixture', reasoning_choice: { mode: 'default' } }, limits: { max_input_tokens: 8000, max_output_tokens: 1500 } };
+export const fixtureAgent = { teacher_id: definition.config_id!, version: 1, is_default: true, definition };
+const samples: Record<string, unknown> = {
+  ideas: { kind: 'ideas', title: '我的小狗世界', items: [{ id: 'dog', text: '养一只自己的小狗', state: 'kept' }, { id: 'breed', parentId: 'dog', text: '是一只柯基', state: 'kept' }, { id: 'garden', text: '有一片可以种东西的花园', state: 'kept' }, { id: 'food', parentId: 'garden', text: '种出来的东西可以喂小狗', state: 'suggested' }] },
+  structure: { kind: 'structure', title: '小狗和花园怎么连起来？', nodes: [{ id: 'world', label: '我的小狗世界' }, { id: 'dog', label: '照顾小狗', parentId: 'world' }, { id: 'breed', label: '一只柯基', parentId: 'dog', relation: '它的样子' }, { id: 'garden', label: '种植花园', parentId: 'world' }, { id: 'food', label: '收获食物，喂给小狗', parentId: 'garden', relation: '收获后' }] },
+  flow: { kind: 'flow', title: '我回家时，小狗会做什么？', nodes: [{ id: 'home', kind: 'event', label: '我回到家' }, { id: 'awake', kind: 'condition', label: '小狗醒着吗？' }, { id: 'welcome', kind: 'outcome', label: '跑过来欢迎我' }, { id: 'sleep', kind: 'outcome', label: '先睡觉，醒来再过来' }], edges: [{ id: 'one', from: 'home', to: 'awake' }, { id: 'yes', from: 'awake', to: 'welcome', label: '醒着' }, { id: 'no', from: 'awake', to: 'sleep', label: '睡着了' }] },
+  comparison: { kind: 'comparison', title: '哪一种更像你想要的小狗？', columns: [{ id: 'click', label: '点了才回应' }, { id: 'active', label: '会主动找我' }], rows: [{ id: 'home', label: '刚回到家的时候', cells: [{ columnId: 'click', text: '等我点一下，才跳起来。' }, { columnId: 'active', text: '看见我就跑过来，还带着玩具。' }] }, { id: 'busy', label: '我忙着种东西的时候', cells: [{ columnId: 'click', text: '安静等着，不打扰我。' }, { columnId: 'active', text: '有时来蹭一蹭，可能也会打断我。' }] }] },
+};
+const scenario = new URLSearchParams(location.search).get('kind') ?? 'ideas';
+let current: TeacherTopic = { schemaVersion: 1, revision: 1, id: 'discussion-fixture', accountId: 'fixture', projectId: 'fixture', sourceConversationId: 'project', definition, version: 1, conversation: { agentId: fixtureAgent.teacher_id, segmentTurns: 1 }, createdAt: 'now', updatedAt: 'now', requests: Array.from({ length: 8 }, (_, i) => ({ id: `r${i}`, text: i === 7 ? '我还没想好，我们边聊边想。' : '我希望这个游戏更有意思。', references: [], projectId: 'fixture', sourceConversationId: 'source', teacherVersion: 1, createdAt: `2026-09-28T10:00:${String(i).padStart(2, '0')}Z`, sourceCursor: { workerGeneration: 0, seq: i }, sourceCapturedAt: 'now', includedSourceMessageIds: [], omittedMessages: 0, status: 'completed', response: i === 7 ? '可以，我们先把已经想到的放在一起。哪里还不确定，就留着继续聊。' : '先从你最在意的一个小地方开始想。', ...(i === 7 ? { suggestedQuestions: ['有什么好玩的想法？'] } : {}) })), ...(samples[scenario] ? { discussion: { id: 'tool', revision: 1, status: 'active', content: structuredClone(samples[scenario]) } } : {}) };
+const stream = Object.assign(new EventTarget(), { close() {}, onerror: null, onopen: null });
+if (scenario === 'retry') {
+  const status = new URLSearchParams(location.search).get('status') === 'cancelled' ? 'cancelled' : 'failed';
+  current.requests = [{
+    ...current.requests[0], text: '给我一点提示', intent: 'suggestions', status, response: '',
+    ...(status === 'failed' ? { error: '这次没连上，我们可以再试一次。' } : {}),
+  }];
+}
+if (scenario === 'rich-text') {
+  current.requests = [{
+    ...current.requests[0], text: '帮我看看项目和最近的讨论',
+    response: '## 项目建议\n\n**先核对已有设计**，再决定下一步。\n\n- 检查入口文件\n- 保留当前玩法\n\n| 文件 | 作用 | 需要确认 |\n| --- | --- | --- |\n| src/main.ts | 初始化项目 | 游戏循环与计时 |\n| public/assets | 图片资源 | 构建后路径是否可用 |\n\n```js\nconst message = "保留字符串里的\\n，不把它变成实际换行";\nconst resourcePath = "/assets/" + "very-long-file-name-".repeat(15);\n```\n\n运动距离：$s = vt$。\n\n![项目截图](https://example.com/teacher-preview.png)\n\n[项目说明](https://example.com/readme)\n\n> 先验证观察到的现象。',
+    discussionError: '这次整理没有完成，先保留原来的内容。',
+    unparsedResponse: '{"reply":"正文已保留","tool":{"kind":"structure",',
+  }];
+}
+let timer: ReturnType<typeof setTimeout> | undefined;
+const sentInputs: TeacherSend[] = [];
+Object.defineProperty(window, '__teacherReplyInputs', { value: sentInputs });
+const snapshot = () => { current.revision++; stream.dispatchEvent(new MessageEvent('snapshot', { data: JSON.stringify(current) })); };
+export const teacherApi = {
+  catalog: async () => ({ items: [fixtureAgent] }),
+  config: async () => ({ enabled: true, definition }),
+  conversation: async () => ({ topic: structuredClone(current), before: null }),
+  seenConversation: async (_agent: string, requestId: string) => {
+    current.conversation!.seenThrough = requestId;
+    current.revision++;
+    return structuredClone(current);
+  },
+  legacyHistory: async () => ({ items: [], lastSelectedTopicId: null }),
+  events: async () => stream,
+  sendConversation: async (_agent: string, input: TeacherSend) => {
+    if ('presentation' in input || 'discussion' in input) throw new Error('Retired component fields must not be sent');
+    sentInputs.push(structuredClone(input));
+    current.requests.push({ id: input.requestId, text: input.text, intent: input.intent, references: [], projectId: input.projectId, sourceConversationId: input.sourceConversationId, teacherVersion: 1, createdAt: `2026-09-28T10:01:${String(sentInputs.length).padStart(2, '0')}Z`, status: 'running', sourceCursor: { workerGeneration: 0, seq: 1 }, sourceCapturedAt: 'now', includedSourceMessageIds: [], omittedMessages: 0, response: '', presentation: 'reply-v1' });
+    snapshot();
+    timer = setTimeout(() => {
+      const request = current.requests.at(-1)!;
+      request.status = 'completed';
+      request.response = input.intent === 'suggestions' ? '我们可以先从一个小地方开始。' : '好，我们就从这一个问题聊起。';
+      if (input.intent === 'suggestions') request.suggestedQuestions = ['可以从哪个小地方开始？'];
+      snapshot();
+    }, 350);
+    return structuredClone(current);
+  },
+  cancel: async () => { clearTimeout(timer); current.requests.at(-1)!.status = 'cancelled'; snapshot(); return structuredClone(current); },
+};
+export const teacherTopicsPath = () => '/fixture';
+
+export const legacyTopicBase = (base: string) => base;
diff --git a/tests/e2e/fixtures/teacher-discussion-layout.tsx b/tests/e2e/fixtures/teacher-reply-layout.tsx
similarity index 80%
rename from tests/e2e/fixtures/teacher-discussion-layout.tsx
rename to tests/e2e/fixtures/teacher-reply-layout.tsx
index 3cfddb65..5836d7ce 100644
--- a/tests/e2e/fixtures/teacher-discussion-layout.tsx
+++ b/tests/e2e/fixtures/teacher-reply-layout.tsx
@@ -1,13 +1,14 @@
 import { createRoot } from 'react-dom/client';
+import { fixtureAgent } from './teacher-reply-api';
 import { TeacherChatPanel } from '../../../src/pages/Chat/TeacherChatPanel';
 import '../../../src/styles/globals.css';
 import '../../../src/pages/Chat/classroom-workspace.css';
 import 'katex/dist/katex.min.css';
 const width = Number(new URLSearchParams(location.search).get('width')) || 508;
 createRoot(document.getElementById('root')!).render(<div className="classroom-workspace flex h-screen flex-col bg-white">
-  <header className="flex h-10 shrink-0 items-center border-b px-5 text-xs">智能体讨论交互测试 · 真实页面组件 / 模拟回复</header>
+  <header className="flex h-10 shrink-0 items-center border-b px-5 text-xs">智能体回复交互测试 · 真实页面组件 / 模拟回复</header>
   <div className="flex min-h-0 flex-1 justify-end bg-[#f5f5f1]">
     <main className="min-w-0 flex-1 p-8"><h1 className="text-lg">我的小狗世界</h1><p className="mt-4 text-sm text-muted-foreground">作品区域</p></main>
-    <div className="h-full shrink-0 border-l" style={{ width }}><TeacherChatPanel projectId="fixture" sourceId="source" /></div>
+    <div className="h-full shrink-0 border-l" style={{ width }}><TeacherChatPanel projectId="fixture" sourceId="source" selectedAgent={fixtureAgent} /></div>
   </div>
 </div>);
diff --git a/tests/e2e/pi-coding-first-chat.spec.ts b/tests/e2e/pi-coding-first-chat.spec.ts
index 41d654f8..0207e08b 100644
--- a/tests/e2e/pi-coding-first-chat.spec.ts
+++ b/tests/e2e/pi-coding-first-chat.spec.ts
@@ -590,7 +590,7 @@ async function installCodingFirstChatHost(
         }
         if (path.endsWith(`${topicBase}/${topicId}/messages`) && method === 'POST') {
           const suggestionRequest = body!.intent === 'suggestions';
-          const teacherResponse = suggestionRequest ? '我们可以从你最近试过的地方聊起。' : body!.intent === 'guided-help' ? '你最近做的哪一步，让你停下来想了一会儿？' : '先理解状态如何随点击变化，再修改代码。';
+          const teacherResponse = suggestionRequest ? '我们可以从你最近试过的地方聊起。' : '先理解状态如何随点击变化，再修改代码。';
           consultationTopics[consultationPath]={...currentTopic,revision:Number(currentTopic?.revision??0)+1,requests:[...(currentTopic?.requests as unknown[]??[]),{id:body!.requestId,text:body!.text,intent:body!.intent,references:body!.references??[],createdAt:now,sourceCursor:{workerGeneration:1,seq:1},sourceCapturedAt:now,includedSourceMessageIds:[],omittedMessages:0,truncatedMessages:1,status:'completed',response:teacherResponse,...(suggestionRequest?{suggestedQuestions:['怎样观察别人玩游戏？','我该先试哪个想法？']}:{})}]};
           return respond(consultationTopics[consultationPath],202);
         }
@@ -1846,14 +1846,21 @@ test('project consultations preserve student drafts and switch between work and
     await expect(page.getByRole('button', { name: '与代码智能体聊天' })).toBeVisible();
     await expect(page.getByRole('button', { name: '与朋友聊天' })).toHaveAttribute('aria-pressed', 'true');
     await expect(page.locator('#coding-consultation-dock')).toHaveCSS('width', '508px');
-    await expect(teacher.getByTestId('consultation-composer-actions').getByRole('button', { name: '帮我看看', exact: true })).toBeVisible();
+    await expect(teacher.locator('form .consultation-hint')).toBeVisible();
+    await expect(teacher.locator('form .consultation-hint')).toHaveText('继续看看👀');
     await expect(teacher.getByText('把你的困惑说出来就好')).toHaveCount(0);
     await expect(teacher.getByText('当前项目',{exact:true})).toHaveCount(0);
     await expect(teacher.getByRole('button',{name:'解释当前代码',exact:true})).toBeVisible();
     expect((await readState(electronApp)).captured.filter(item=>item.path.endsWith('/messages')&&item.method==='POST')).toHaveLength(0);
     await teacher.getByRole('textbox',{name:'向智能体提问'}).fill('还没说完的困惑');
-    await teacher.getByRole('button',{name:'帮我看看',exact:true}).click();
+    await expect(teacher.locator('form .consultation-hint')).toHaveCount(0);
+    expect((await readState(electronApp)).captured.filter(item=>item.path.endsWith('/messages')&&item.method==='POST')).toHaveLength(0);
+    await teacher.getByRole('textbox',{name:'向智能体提问'}).fill('');
+    await teacher.locator('form .consultation-hint').click();
     await expect(teacher.getByText('我们可以从你最近试过的地方聊起。')).toBeVisible();
+    await expect(teacher.getByTestId('teacher-discussion')).toHaveCount(0);
+    await teacher.getByRole('textbox',{name:'向智能体提问'}).fill('还没说完的困惑');
+    await expect(teacher.locator('form .consultation-hint')).toHaveCount(0);
     await expect(teacher.getByRole('textbox',{name:'向智能体提问'})).toHaveValue('还没说完的困惑');
     expect((await readState(electronApp)).captured.filter(item=>item.path.endsWith('/messages')&&item.method==='POST')).toHaveLength(1);
     await teacher.getByRole('button',{name:'怎样观察别人玩游戏？',exact:true}).click();
@@ -1863,8 +1870,7 @@ test('project consultations preserve student drafts and switch between work and
     await expect(teacher.getByRole('button',{name:'我去试一试'})).toHaveCount(0);
     await expect(teacher.getByRole('button',{name:'复制',exact:true})).toHaveCount(0);
     await expect(composer).toHaveValue('保留我的草稿');
-    await teacher.getByRole('button',{name:'我也说不清，你带我看看',exact:true}).click();
-    await expect(teacher.getByText('你最近做的哪一步，让你停下来想了一会儿？')).toBeVisible();
+    await expect(teacher.getByRole('button',{name:'我也说不清，你带我看看',exact:true})).toHaveCount(0);
     await expect(teacher.getByRole('textbox',{name:'向智能体提问'})).toHaveValue('还没说完的困惑');
     await page.getByRole('tab',{name:'操作对话',exact:true}).click();
     await expect(composer).toBeVisible();
@@ -1886,16 +1892,19 @@ test('project consultations preserve student drafts and switch between work and
     const requests=(await readState(electronApp)).captured;
     expect(requests.filter(item=>item.path.endsWith('/prompt')&&item.method==='POST')).toHaveLength(0);
     const consultationRequests=requests.filter(item=>item.path.endsWith('/messages')&&item.method==='POST');
-    expect(consultationRequests).toHaveLength(3);
+    expect(consultationRequests).toHaveLength(2);
     expect(requests.filter(item => item.path.endsWith('/agent-topics') && item.method === 'POST')).toHaveLength(0);
     expect(consultationRequests.every(item => item.path === '/api/coding/agent-conversations/teacher-algorithm/messages')).toBe(true);
     await expect(teacher.getByRole('button', { name: '智能体新话题' })).toHaveCount(0);
     await expect(teacher.getByRole('combobox')).toHaveCount(0);
+    for (const request of consultationRequests) {
+      expect(request.body).not.toHaveProperty('presentation');
+      expect(request.body).not.toHaveProperty('discussion');
+    }
     await expect(teacher).toHaveAccessibleName('朋友咨询');
-    expect(consultationRequests[0].body).toMatchObject({intent:'suggestions',text:'帮我看看'});
+    expect(consultationRequests[0].body).toMatchObject({intent:'suggestions',text:'继续看看👀'});
     expect(consultationRequests[1].body).toMatchObject({text:'怎样观察别人玩游戏？'});
     expect(consultationRequests[1].body?.intent).toBeUndefined();
-    expect(consultationRequests[2].body).toMatchObject({intent:'guided-help',text:'我也说不清，你带我看看'});
     await page.screenshot({path:test.info().outputPath('project-teacher-side-chat.png')});
     await page.getByRole('button',{name:'与朋友聊天',exact:true}).click();await expect(teacher).toHaveCount(0);
     await page.getByRole('button',{name:'与朋友聊天',exact:true}).click();
@@ -2199,6 +2208,10 @@ test('work tab prepares the page automatically and keeps the student draft throu
   await expect(page.getByText('正在打开你的作品…', { exact: true })).toBeVisible();
   await electronApp.evaluate(() => { (globalThis as unknown as { __makelorePiFirstChatE2E: { workReady: boolean } }).__makelorePiFirstChatE2E.workReady = true; });
   await expect(page.getByRole('textbox', { name: '网页地址' })).toHaveValue('http://127.0.0.1:4173/');
+  await expect(page.getByTestId('agent-browser-panel')).toHaveAccessibleName('作品预览');
+  await expect(page.getByRole('heading', { name: '作品预览', exact: true })).toHaveCount(0);
+  await expect(page.getByRole('button', { name: '收起作品', exact: true })).toHaveCount(0);
+  await expect(page.getByTestId('agent-browser-viewport')).toBeVisible();
   await expect(page.getByText('正在打开你的作品…', { exact: true })).toHaveCount(0);
   // A manual address open must not permanently disable recovery checks.
   await page.getByRole('textbox', { name: '网页地址' }).fill('http://127.0.0.1:4173/');
diff --git a/tests/e2e/teacher-discussion-layout.spec.ts b/tests/e2e/teacher-discussion-layout.spec.ts
deleted file mode 100644
index 7651e745..00000000
--- a/tests/e2e/teacher-discussion-layout.spec.ts
+++ /dev/null
@@ -1,103 +0,0 @@
-import { test, expect } from '@playwright/test';
-import { createServer, type ViteDevServer } from 'vite';
-import { resolve } from 'node:path';
-let server: ViteDevServer;
-let url: string;
-test.use({ channel: process.env.MAKELORE_LAYOUT_BROWSER_CHANNEL, video: 'off' });
-test.beforeAll(async () => {
-  server = await createServer({ configFile: false, cacheDir: 'node_modules/.vite-teacher-discussion', resolve: { alias: { '@': resolve('src') } }, esbuild: { jsx: 'automatic' }, server: { host: '127.0.0.1', port: 0 }, plugins: [{
-    name: 'isolated-discussion-test', enforce: 'pre',
-    load(id) {
-      if (id.endsWith('/src/lib/coding-teacher.ts')) return "export { teacherApi, teacherTopicsPath, legacyTopicBase } from '/tests/e2e/fixtures/teacher-discussion-api.ts';";
-      if (id.endsWith('/src/stores/auth.ts')) return 'export const useAuthStore = selector => selector({user:{userId:"fixture"}});';
-    },
-    configureServer(vite) { vite.middlewares.use((req, res, next) => {
-      if (!req.url?.startsWith('/?') && req.url !== '/') return next();
-      res.setHeader('Content-Type', 'text/html');
-      res.end('<html><head><meta charset="utf-8"></head><body><div id="root"></div><script type="module" src="/tests/e2e/fixtures/teacher-discussion-layout.tsx"></script></body></html>');
-    }); },
-  }] });
-  await server.listen(); url = server.resolvedUrls!.local[0];
-});
-test.afterAll(async () => { await server?.close(); });
-for (const width of [319, 508]) {
-  test(`rich replies keep code, tables and images inside the panel at ${width}px`, async ({ page }) => {
-    await page.setViewportSize({ width: 1180, height: 800 });
-    const errors: string[] = [];
-    page.on('pageerror', error => errors.push(error.message));
-    await page.route('https://example.com/teacher-preview.png', route => route.fulfill({
-      contentType: 'image/svg+xml',
-      body: '<svg xmlns="http://www.w3.org/2000/svg" width="900" height="250"><rect width="900" height="250" fill="#ebeedf"/><text x="30" y="130" font-size="32">Flybot project preview</text></svg>',
-    }));
-    await page.goto(`${url}?kind=rich-text&width=${width}`);
-    const body = page.getByTestId('teacher-reply');
-    await expect(body.getByRole('heading', { name: '项目建议' })).toHaveCount(1);
-    await expect(body.getByRole('table')).toHaveCount(1);
-    await expect(body.locator('.katex')).toHaveCount(1);
-    await expect(body.getByRole('img', { name: '项目截图' })).toBeVisible();
-    await expect.poll(() => body.evaluate(el => el.scrollWidth <= el.clientWidth)).toBe(true);
-    await expect.poll(() => page.locator('.consultation-messages').evaluate(el => el.scrollWidth <= el.clientWidth)).toBe(true);
-    const raw = page.getByText('查看收到的原始内容');
-    await expect(raw.locator('..')).not.toHaveAttribute('open');
-    await raw.click();
-    await expect(raw.locator('..').locator('pre')).toContainText('"tool"');
-    const input = page.getByRole('textbox', { name: '向智能体提问' });
-    await expect(input).toBeVisible();
-    await page.locator('.consultation-messages').evaluate(el => { el.scrollTop = 0; });
-    await page.screenshot({ path: test.info().outputPath(`rich-reply-${width}.png`) });
-    expect(errors).toEqual([]);
-  });
-}
-for (const width of [319, 508]) for (const kind of ['ordinary', 'ideas', 'structure', 'flow', 'comparison']) {
-  test(`${kind} pins the current tool and composer at ${width}px`, async ({ page }) => {
-    await page.setViewportSize({ width: 1180, height: 800 });
-    const errors: string[] = []; page.on('pageerror', error => errors.push(error.message));
-    await page.addInitScript(() => localStorage.setItem(
-      'makelore-consultation-draft:fixture:fixture:friend', JSON.stringify({ text: '', references: [] }),
-    ));
-    await page.goto(`${url}?kind=${kind}&width=${width}`);
-    const input = page.getByRole('textbox', { name: '向智能体提问' });
-    await expect(input).toBeEnabled();
-    await expect(page.locator('form')).not.toHaveText(/^0/);
-    await expect(page.getByText('查看旧版朋友草稿')).toHaveCount(0);
-    const tool = page.getByTestId('teacher-discussion');
-    if (kind === 'ordinary') {
-      await expect(tool).toHaveCount(0);
-      await input.fill('保留我的草稿');
-      await page.getByRole('button', { name: '有什么好玩的想法？' }).click();
-      await expect(page.getByText('好，已经把你的补充放在上面了。我们可以接着想。')).toBeVisible();
-      await expect(input).toHaveValue('保留我的草稿');
-    } else {
-      await expect(tool).toHaveAttribute('data-kind', kind);
-      const before = await tool.boundingBox();
-      const composer = await input.boundingBox();
-      await page.locator('.consultation-messages').hover();
-      await page.mouse.wheel(0, -1500);
-      await expect.poll(async () => (await tool.boundingBox())?.y).toBe(before!.y);
-      expect((await input.boundingBox())?.y).toBe(composer!.y);
-      expect(await tool.evaluate(el => el.scrollWidth <= el.clientWidth)).toBe(true);
-      expect(composer!.y + composer!.height).toBeLessThan(800);
-      await input.fill('它还喜欢和我踢球');
-      await page.getByRole('button', { name: '提问', exact: true }).click();
-      await expect(page.getByRole('status')).toContainText('正在梳理');
-      await expect(page.getByText('好，已经把你的补充放在上面了。我们可以接着想。')).toBeVisible();
-      await expect(tool).toHaveCount(1);
-      await expect(tool).toHaveAttribute('data-kind', kind);
-      if (kind === 'ideas') {
-        await page.getByRole('button', { name: '把想法理一理' }).click();
-        await expect(tool).toHaveAttribute('data-kind', 'structure');
-        await page.getByRole('button', { name: '回去补充想法' }).click();
-        await expect(tool).toHaveAttribute('data-kind', 'ideas');
-        await expect(tool.getByText('它还喜欢和我踢球', { exact: true })).toHaveCount(1);
-      }
-      await input.fill('先留下下一句');
-      await page.getByRole('button', { name: '先这些', exact: true }).click();
-      await expect(tool).toHaveAttribute('data-collapsed', 'true');
-      await expect(input).toHaveValue('先留下下一句');
-      await page.getByRole('button', { name: '接着改', exact: true }).click();
-      await expect(tool).toHaveAttribute('data-collapsed', 'false');
-    }
-    await page.screenshot({ path: test.info().outputPath(`${kind}-${width}.png`) });
-    expect(errors).toEqual([]);
-  });
-}
diff --git a/tests/e2e/teacher-reply-layout.spec.ts b/tests/e2e/teacher-reply-layout.spec.ts
new file mode 100644
index 00000000..9fa1bb0f
--- /dev/null
+++ b/tests/e2e/teacher-reply-layout.spec.ts
@@ -0,0 +1,156 @@
+import { test, expect } from '@playwright/test';
+import { createServer, type ViteDevServer } from 'vite';
+import { realpathSync } from 'node:fs';
+import { resolve } from 'node:path';
+let server: ViteDevServer;
+let url: string;
+test.use({ headless: true, channel: process.env.MAKELORE_LAYOUT_BROWSER_CHANNEL, video: 'off' });
+test.beforeAll(async () => {
+  server = await createServer({ configFile: false, cacheDir: 'node_modules/.vite-teacher-reply', resolve: { alias: { '@': resolve('src') } }, esbuild: { jsx: 'automatic' }, server: { host: '127.0.0.1', port: 0, fs: { allow: [resolve('.'), realpathSync(resolve('node_modules'))] } }, plugins: [{
+    name: 'isolated-reply-test', enforce: 'pre',
+    load(id) {
+      if (id.endsWith('/src/lib/coding-teacher.ts')) return "export { teacherApi, teacherTopicsPath, legacyTopicBase } from '/tests/e2e/fixtures/teacher-reply-api.ts';";
+      if (id.endsWith('/src/stores/auth.ts')) return 'export const useAuthStore = selector => selector({user:{userId:"fixture"}});';
+    },
+    configureServer(vite) { vite.middlewares.use((req, res, next) => {
+      if (!req.url?.startsWith('/?') && req.url !== '/') return next();
+      res.setHeader('Content-Type', 'text/html');
+      res.end('<html><head><meta charset="utf-8"></head><body><div id="root"></div><script type="module" src="/tests/e2e/fixtures/teacher-reply-layout.tsx"></script></body></html>');
+    }); },
+  }] });
+  await server.listen(); url = server.resolvedUrls!.local[0];
+});
+test.afterAll(async () => { await server?.close(); });
+test('retry stickers stay readable and preserve drafts in a 319px consultation', async ({ page }) => {
+  await page.setViewportSize({ width: 1180, height: 800 });
+  await page.addInitScript(() => localStorage.clear());
+  for (const status of ['failed', 'cancelled']) {
+    await page.goto(`${url}?kind=retry&status=${status}&width=319`);
+    const panel = page.getByTestId('teacher-chat-panel');
+    const retry = panel.locator('.consultation-retry');
+    await expect(retry).toBeEnabled();
+    await expect(retry).toHaveText('继续看看👀');
+    expect(await retry.evaluate(el => el.scrollWidth <= el.clientWidth)).toBe(true);
+    const [panelBounds, retryBounds] = await Promise.all([panel.boundingBox(), retry.boundingBox()]);
+    expect(retryBounds!.x).toBeGreaterThanOrEqual(panelBounds!.x);
+    expect(retryBounds!.x + retryBounds!.width).toBeLessThanOrEqual(panelBounds!.x + panelBounds!.width);
+    await panel.screenshot({ path: test.info().outputPath(`retry-${status}-319.png`) });
+    const input = page.getByRole('textbox', { name: '向智能体提问' });
+    await input.fill('我还有一点自己的想法');
+    await retry.click();
+    await expect(page.getByText('我们可以先从一个小地方开始。')).toBeVisible();
+    await expect(input).toHaveValue('我还有一点自己的想法');
+    expect(await page.evaluate(() => (window as unknown as { __teacherReplyInputs: unknown[] }).__teacherReplyInputs)).toEqual([
+      { requestId: expect.any(String), text: '继续看看👀', intent: 'suggestions', references: [], projectId: 'fixture', sourceConversationId: 'source' },
+    ]);
+  }
+});
+
+for (const width of [319, 508]) {
+  test(`empty-composer hint stays readable and keeps the send position stable at ${width}px`, async ({ page }) => {
+    await page.setViewportSize({ width: 1180, height: 800 });
+    await page.goto(`${url}?kind=ordinary&width=${width}`);
+    const input = page.getByRole('textbox', { name: '向智能体提问' });
+    const hint = page.locator('form .consultation-hint');
+    const send = page.getByRole('button', { name: '提问', exact: true });
+    const sent = () => page.evaluate(() => (window as unknown as { __teacherReplyInputs: unknown[] }).__teacherReplyInputs);
+    await expect(hint).toBeEnabled();
+    await expect(hint).toHaveText('继续看看👀');
+    await expect(hint).toHaveCSS('background-color', 'rgb(255, 242, 201)');
+    const initialSend = (await send.boundingBox())!;
+    const hintBounds = (await hint.boundingBox())!;
+    expect(hintBounds.x).toBeLessThan(initialSend.x);
+    expect(hintBounds.height).toBeGreaterThanOrEqual(44);
+    expect(hintBounds.x + hintBounds.width).toBeLessThanOrEqual(initialSend.x);
+    await page.getByTestId('teacher-chat-panel').screenshot({ path: test.info().outputPath(`composer-hint-${width}.png`) });
+    expect(await sent()).toEqual([]);
+    await input.fill('我想先自己说说');
+    await expect(hint).toHaveCount(0);
+    expect(await send.boundingBox()).toEqual(initialSend);
+    await input.fill('   ');
+    await expect(hint).toBeVisible();
+    await input.fill('');
+    await expect(hint).toBeVisible();
+    expect(await send.boundingBox()).toEqual(initialSend);
+    expect(await sent()).toEqual([]);
+    await hint.click();
+    await expect(page.getByText('我们可以先从一个小地方开始。')).toBeVisible();
+    expect(await sent()).toEqual([{ requestId: expect.any(String), text: '继续看看👀', intent: 'suggestions', references: [], projectId: 'fixture', sourceConversationId: 'source' }]);
+    await expect(page.getByRole('button', { name: '我也说不清，你带我看看', exact: true })).toHaveCount(0);
+    await expect(page.locator('.consultation-messages').getByRole('button', { name: '继续看看👀', exact: true })).toHaveCount(0);
+    const card = page.getByRole('button', { name: '可以从哪个小地方开始？' });
+    await expect(card).toBeVisible();
+    await input.fill('留着我自己的草稿');
+    await expect(hint).toHaveCount(0);
+    await card.click();
+    await expect(page.getByText('好，我们就从这一个问题聊起。')).toBeVisible();
+    await expect(input).toHaveValue('留着我自己的草稿');
+    expect(await sent()).toHaveLength(2);
+    await page.screenshot({ path: test.info().outputPath(`composer-draft-${width}.png`) });
+  });
+
+  test(`rich replies keep code, tables and images inside the panel at ${width}px`, async ({ page }) => {
+    await page.setViewportSize({ width: 1180, height: 800 });
+    const errors: string[] = [];
+    page.on('pageerror', error => errors.push(error.message));
+    await page.route('https://example.com/teacher-preview.png', route => route.fulfill({
+      contentType: 'image/svg+xml',
+      body: '<svg xmlns="http://www.w3.org/2000/svg" width="900" height="250"><rect width="900" height="250" fill="#ebeedf"/><text x="30" y="130" font-size="32">Flybot project preview</text></svg>',
+    }));
+    await page.goto(`${url}?kind=rich-text&width=${width}`);
+    const body = page.getByTestId('teacher-reply');
+    await expect(body.getByRole('heading', { name: '项目建议' })).toHaveCount(1);
+    await expect(body.getByRole('table')).toHaveCount(1);
+    await expect(body.locator('.katex')).toHaveCount(1);
+    await expect(body.getByRole('img', { name: '项目截图' })).toBeVisible();
+    await expect.poll(() => body.evaluate(el => el.scrollWidth <= el.clientWidth)).toBe(true);
+    await expect.poll(() => page.locator('.consultation-messages').evaluate(el => el.scrollWidth <= el.clientWidth)).toBe(true);
+    const raw = page.getByText('查看收到的原始内容');
+    await expect(raw.locator('..')).not.toHaveAttribute('open');
+    await raw.click();
+    await expect(raw.locator('..').locator('pre')).toContainText('"tool"');
+    const input = page.getByRole('textbox', { name: '向智能体提问' });
+    await expect(input).toBeVisible();
+    await page.locator('.consultation-messages').evaluate(el => { el.scrollTop = 0; });
+    await page.screenshot({ path: test.info().outputPath(`rich-reply-${width}.png`) });
+    expect(errors).toEqual([]);
+  });
+}
+for (const width of [319, 508]) for (const kind of ['ordinary', 'ideas', 'structure', 'flow', 'comparison']) {
+  test(`${kind} history keeps ordinary replies, quick cards and the composer usable at ${width}px`, async ({ page }) => {
+    await page.setViewportSize({ width: 1180, height: 800 });
+    const errors: string[] = []; page.on('pageerror', error => errors.push(error.message));
+    await page.addInitScript(() => localStorage.setItem(
+      'makelore-consultation-draft:fixture:fixture:friend', JSON.stringify({ text: '', references: [] }),
+    ));
+    await page.goto(`${url}?kind=${kind}&width=${width}`);
+    const input = page.getByRole('textbox', { name: '向智能体提问' });
+    await expect(input).toBeEnabled();
+    await expect(page.getByRole('complementary', { name: '麦洛智能体咨询' })).toBeVisible();
+    await expect(page.getByTestId('teacher-chat-panel').locator('header')).toHaveCount(0);
+    await expect(page.getByRole('button', { name: '智能体新话题' })).toHaveCount(0);
+    await expect(page.getByRole('combobox')).toHaveCount(0);
+    await expect(page.locator('form')).not.toHaveText(/^0/);
+    await expect(page.getByText('查看旧版朋友草稿')).toHaveCount(0);
+    await expect(page.getByTestId('teacher-discussion')).toHaveCount(0);
+    await expect(page.getByRole('button', { name: /用这个一起想|先这些|接着改|把想法理一理|聊聊这一点/ })).toHaveCount(0);
+    await input.fill('保留我的草稿');
+    const card = page.getByRole('button', { name: '有什么好玩的想法？' });
+    await expect(card).toBeVisible();
+    expect(await card.evaluate(el => el.scrollWidth <= el.clientWidth)).toBe(true);
+    await card.click();
+    await expect(page.getByText('好，我们就从这一个问题聊起。')).toBeVisible();
+    await expect(input).toHaveValue('保留我的草稿');
+    await input.fill('它还喜欢和我踢球');
+    await page.getByRole('button', { name: '提问', exact: true }).click();
+    await expect(page.getByText('它还喜欢和我踢球', { exact: true })).toBeVisible();
+    await expect(page.getByText('好，我们就从这一个问题聊起。')).toHaveCount(2);
+    await expect(input).toHaveValue('');
+    await expect(page.getByTestId('teacher-discussion')).toHaveCount(0);
+    expect(await page.locator('.consultation-messages').evaluate(el => el.scrollWidth <= el.clientWidth)).toBe(true);
+    const composer = await input.boundingBox();
+    expect(composer!.y + composer!.height).toBeLessThan(800);
+    await page.screenshot({ path: test.info().outputPath(`${kind}-${width}.png`) });
+    expect(errors).toEqual([]);
+  });
+}
diff --git a/tests/fixtures/teacher-guidance-examples.json b/tests/fixtures/teacher-guidance-examples.json
index 6a3f29ea..ddb48c3c 100644
--- a/tests/fixtures/teacher-guidance-examples.json
+++ b/tests/fixtures/teacher-guidance-examples.json
@@ -1,5 +1,5 @@
 {
-  "note": "人工编写的教学与协议样例；由真实解析器及讨论状态机验证，不是模型质量评测结果，也不加入运行时提示词。",
+  "note": "历史协议兼容样例：仅验证正文和快捷回复保留，tool 数据全部丢弃，不恢复组件或状态机。这些人工样例不是模型质量评测结果，也不加入运行时提示词。",
   "pet": {
     "student": "我想养一只柯基，别的还没想好。",
     "response": {
diff --git a/tests/unit/agent-browser-panel.test.tsx b/tests/unit/agent-browser-panel.test.tsx
index 40ec1a1a..b73aa02e 100644
--- a/tests/unit/agent-browser-panel.test.tsx
+++ b/tests/unit/agent-browser-panel.test.tsx
@@ -264,7 +264,13 @@ describe('AgentBrowserPanel', () => {
     const onOpenChange = vi.fn();
     const view = render(<AgentBrowserPanel projectId="project-a" open embedded onOpenChange={onOpenChange} />);
     await waitFor(() => expect(latestPresentation()).toMatchObject({ project_id: 'project-a', visible: true }));
+    expect(screen.getByRole('complementary', { name: '作品预览' })).toBeVisible();
+    expect(screen.queryByRole('heading', { name: '作品预览' })).not.toBeInTheDocument();
+    expect(screen.queryByRole('button', { name: '收起作品' })).not.toBeInTheDocument();
     expect(screen.getByRole('textbox', { name: '网页地址' })).toHaveValue('http://127.0.0.1:4173/');
+    expect(screen.getByRole('textbox', { name: '网页地址' })).toBeEnabled();
+    expect(screen.getByTestId('agent-browser-viewport')).toBeVisible();
+    expect(screen.getByTestId('agent-browser-viewport')).toHaveAccessibleName('作品画面');
 
     view.rerender(<AgentBrowserPanel projectId="project-a" open={false} embedded onOpenChange={onOpenChange} />);
     await waitFor(() => expect(latestPresentation()).toMatchObject({ visible: false }));
diff --git a/tests/unit/coding-teacher-cloud.test.ts b/tests/unit/coding-teacher-cloud.test.ts
index 1b9650b1..230d008a 100644
--- a/tests/unit/coding-teacher-cloud.test.ts
+++ b/tests/unit/coding-teacher-cloud.test.ts
@@ -12,10 +12,9 @@ import { TeacherError } from '../../electron/coding-teacher/config-client';
 import * as teacherConfig from '../../electron/coding-teacher/config-client';
 import * as cloudFetch from '../../electron/utils/proxy-fetch';
 import { compileTeacherContext, estimateTeacherTokens } from '../../electron/coding-teacher/context';
-import { discussionInstructions } from '../../electron/coding-teacher/discussion';
+import { teacherReplyInstructions } from '../../electron/coding-teacher/reply';
 const TEACHER_BEHAVIOR_PROMPT = '你是麦洛的创作老师';
-import { parseTeacherSuggestions } from '../../electron/coding-teacher/suggestions';
-import { parseTeacherDiscussionReply } from '../../shared/teacher-discussion';
+import { parseTeacherReply } from '../../shared/teacher-reply';
 import type { TeacherRequestIntent, TeacherTopic } from '../../shared/coding-teacher';
 
 const roots: string[] = [];
@@ -377,25 +376,20 @@ it('closes a pending tool as failed when its question fails after a raw tool err
   ]);
 });
 
-it('submits the active discussion protocol, current tool content and selected focus', async () => {
+it('submits only the reply protocol without archived component state or focus', async () => {
   const f = await fixture();
-  f.topic.definition.limits.max_input_tokens = 16000;
-  f.topic.discussion = {
-    id: 'ideas', revision: 4, status: 'active',
-    content: { kind: 'ideas', title: '跳跃游戏', items: [{ id: 'gravity', text: '比较两种重力', state: 'kept' }] },
-  };
-  const protocol = discussionInstructions(f.topic, { toolId: 'ideas', revision: 4, focusId: 'gravity' });
-  const { compiled } = await submitCompiledContext(f, 'question', protocol);
+  f.topic.discussion = { id: 'legacy', revision: 4, status: 'active', content: { kind: 'ideas', title: 'legacy-state-sentinel' } };
+  const protocol = teacherReplyInstructions();
+  const { compiled, body } = await submitCompiledContext(f, 'question', protocol);
   expect(compiled.messages.at(-2)).toEqual({ role: 'system', content: protocol });
-  expect(protocol).toContain('只输出一个JSON对象');
-  expect(protocol).toContain('"status":"active"');
-  expect(protocol).toContain('"focusId":"gravity"');
-  expect(protocol).toContain('比较两种重力');
+  expect(protocol).toContain('quickReplies');
+  expect(body.query).not.toContain('legacy-state-sentinel');
+  for (const removed of ['focusId', 'firstItemId', '先这些', 'tool:', '组件']) expect(protocol).not.toContain(removed);
 });
 
 it('submits a short first question with the normal discussion protocol and published budget', async () => {
   const f = await fixture();
-  const { body } = await submitCompiledContext(f, 'question', discussionInstructions(f.topic));
+  const { body } = await submitCompiledContext(f, 'question', teacherReplyInstructions());
   expect(body.query).toContain('下一步怎么想？');
 });
 
@@ -411,7 +405,7 @@ it('fits code excerpts beside the unchanged discussion protocol in the original
   const f = await fixture();
   const original = 'const config = { "title": "小游戏" };\n'.repeat(500);
   f.access.source.messages[0].text = original;
-  const protocol = discussionInstructions(f.topic);
+  const protocol = teacherReplyInstructions();
   const { body, compiled } = await submitCompiledContext(f, 'question', protocol);
   expect(compiled.messages.at(-2)?.content).toBe(protocol);
   expect(compiled.truncatedMessages).toBeGreaterThan(0);
@@ -749,14 +743,14 @@ it('reconnects from the last cursor and fills the final message after an earlier
   expect(f.progress).toHaveBeenCalledWith('连接中断，正在恢复智能体回复…');
 });
 
-it.each(['suggestions', 'discussion-v1'] as const)(
+it.each(['suggestions', 'reply-v1', 'discussion-v1'] as const)(
   'delivers only the final %s JSON after a streamed preamble and a local read', async (format) => {
     const f = await fixture();
     f.topic.requests.push({
       id: requestId, text: '一起讨论', references: [], createdAt: 'now',
       sourceCursor: f.access.source.cursor, sourceCapturedAt: 'now',
       includedSourceMessageIds: [], omittedMessages: 0, status: 'running', response: '',
-      ...(format === 'suggestions' ? { intent: 'suggestions' } : { presentation: 'discussion-v1' }),
+      ...(format === 'suggestions' ? { intent: 'suggestions' } : { presentation: format }),
     });
     const result = format === 'suggestions'
       ? { intro: '我们可以从重力聊起。', questions: ['重力影响了什么？', '怎样比较两种重力？'] }
@@ -806,9 +800,9 @@ it.each(['suggestions', 'discussion-v1'] as const)(
       [{ id: requestId + ':file', name: 'read_project_file', status: 'completed' }],
     ]);
     const response = text.mock.calls.map(([delta]) => delta).join('');
-    expect(format === 'suggestions'
-      ? parseTeacherSuggestions(response)
-      : parseTeacherDiscussionReply(response)).toMatchObject(result);
+    expect(parseTeacherReply(response)).toEqual(format === 'suggestions'
+      ? { reply: result.intro, quickReplies: result.questions }
+      : { reply: result.reply, quickReplies: result.quickReplies });
     expect(f.progress).toHaveBeenCalledWith('正在读取项目与会话…');
     expect(f.progress).toHaveBeenCalledWith('智能体正在继续思考…');
     expect(transport.json).toHaveBeenCalledWith('/runs/before-read/tool-results', {
diff --git a/tests/unit/coding-teacher-model.test.ts b/tests/unit/coding-teacher-model.test.ts
index ffb3ffa3..28bbab6e 100644
--- a/tests/unit/coding-teacher-model.test.ts
+++ b/tests/unit/coding-teacher-model.test.ts
@@ -8,8 +8,7 @@ import { mkdtemp, rm, writeFile } from 'node:fs/promises';
 import { tmpdir } from 'node:os';
 import path from 'node:path';
 import { compileTeacherContext, estimateTeacherTokens } from '../../electron/coding-teacher/context';
-import { discussionInstructions } from '../../electron/coding-teacher/discussion';
-import type { TeacherTopic } from '../../shared/coding-teacher';
+import { teacherReplyInstructions } from '../../electron/coding-teacher/reply';
 
 const account: cloud.TeacherAccount = {
   id: '11111111-1111-4111-8111-111111111111',
@@ -59,11 +58,10 @@ describe('teacher published reasoning wire contract', () => {
     const config = definition({ mode: 'disabled' });
     config.system_prompt = '帮助学生理解设计，结合实际进展给出建议。'.repeat(45);
     const source = { messages: [], cursor: { workerGeneration: 1, seq: 1 }, capturedAt: '2026-09-24' };
-    const topic = { definition: config } as TeacherTopic;
     const prepared = await prepareTeacherModel(account, config, {
       projectPath: tmpdir(), source, assertCurrent: () => undefined,
     }, { finalOnly: true });
-    const protocol = discussionInstructions(topic);
+    const protocol = teacherReplyInstructions();
     const fixed = compileTeacherContext(config, source, [], '帮我看看我的项目有啥问题', [], Infinity, 'question', protocol, true);
     expect(estimateTeacherTokens(fixed.messages)).toBeLessThanOrEqual(prepared.inputLimit);
     const compiled = compileTeacherContext(config, source, [], '帮我看看我的项目有啥问题', [],
@@ -82,8 +80,8 @@ describe('teacher published reasoning wire contract', () => {
       projectPath: tmpdir(), source, assertCurrent: () => undefined,
     });
     expect(() => compileTeacherContext(config, source, [], '你好', [], prepared.inputLimit,
-      'question', discussionInstructions({ definition: config } as TeacherTopic), true))
-      .toThrow('智能体配置或当前整理内容超过上下文预算');
+      'question', teacherReplyInstructions(), true))
+      .toThrow('智能体配置或回复协议超过上下文预算');
     expect(fetch).not.toHaveBeenCalled();
   });
 
diff --git a/tests/unit/coding-teacher-ui.test.tsx b/tests/unit/coding-teacher-ui.test.tsx
index 9b1f3b62..b0b513a5 100644
--- a/tests/unit/coding-teacher-ui.test.tsx
+++ b/tests/unit/coding-teacher-ui.test.tsx
@@ -10,7 +10,6 @@ const api = vi.hoisted(() => ({
   create: vi.fn(),
   read: vi.fn(),
   send: vi.fn(),
-  updateDiscussion: vi.fn(),
   cancel: vi.fn(),
   save: vi.fn(),
   events: vi.fn(),
@@ -55,7 +54,7 @@ const first = topic('first'),
   second = topic('second');
 function request(overrides: Partial<TeacherRequest> = {}): TeacherRequest {
   return {
-    id: 'request-1', text: '帮我看看', references: [], createdAt: 'now',
+    id: 'request-1', text: '给我一点提示', references: [], createdAt: 'now',
     sourceCursor: { workerGeneration: 1, seq: 1 }, sourceCapturedAt: 'now',
     includedSourceMessageIds: [], omittedMessages: 0, status: 'completed', response: '',
     ...overrides,
@@ -73,6 +72,7 @@ beforeEach(() => {
   streams = new Map();
   api.config.mockResolvedValue({ enabled: true, published_version: 1, revision: 1, definition });
   api.catalog.mockResolvedValue({ items: [{ teacher_id: 'one', version: 1, definition, is_default: true }] });
+  api.conversation.mockResolvedValue({ topic: null, before: null });
   api.list.mockResolvedValue({
     items: [
       { id: 'first', title: '第一个' },
@@ -323,25 +323,66 @@ describe('teacher side chat', () => {
     expect(api.send).not.toHaveBeenCalled();
   });
 
-  it('requests contextual suggestions explicitly, hides streaming JSON and preserves the freeform draft', async () => {
+  it.each(['question', 'suggestions'] as const)('keeps duplicate %s quick cards distinct and clickable without replacing the draft', async intent => {
+    const question = '我可以先试哪一步？';
+    const previous = request({ intent, response: '先从你想尝试的地方聊起。', suggestedQuestions: [question, question] });
+    api.read.mockResolvedValue({ ...first, requests: [previous] });
+    api.send.mockImplementation(async (_base, _id, input: TeacherSend) => ({
+      ...first, revision: 2, requests: [previous, request({ id: input.requestId, text: input.text, response: '我们就聊这一点。' })],
+    }));
+    const errors = vi.spyOn(console, 'error').mockImplementation(() => {});
+    try {
+      render(<TeacherChatPanel projectId="p" sourceId="c" />);
+      const cards = await screen.findAllByRole('button', { name: question, exact: true });
+      expect(cards).toHaveLength(2);
+      expect(cards[0]).toBeEnabled();
+      expect(cards[1]).toBeEnabled();
+      fireEvent.change(screen.getByLabelText('向智能体提问'), { target: { value: '还没说完的想法' } });
+      fireEvent.click(cards[1]);
+      await screen.findByText('我们就聊这一点。');
+      expect(api.send).toHaveBeenCalledTimes(1);
+      expect(api.send.mock.calls[0][2]).toEqual({ requestId: expect.any(String), text: question, references: [], sourceConversationId: 'c' });
+      expect(screen.getByLabelText('向智能体提问')).toHaveValue('还没说完的想法');
+      expect(screen.getAllByRole('button', { name: question, exact: true })).toHaveLength(2);
+      expect(errors.mock.calls.filter(args => /same key|unique.*key/i.test(args.join(' ')))).toEqual([]);
+    } finally {
+      errors.mockRestore();
+    }
+  });
+
+  it('only requests suggestions from the empty composer and preserves a later draft while streaming', async () => {
     const streamingJson = '{"intro":"还没输出完","questions":["尚未确认的问题';
     api.send.mockImplementation(async (_base, _id, input: TeacherSend) => ({
       ...first, revision: 2, requests: [suggestionsRequest({ id: input.requestId, status: 'running', response: streamingJson, suggestedQuestions: undefined })],
     }));
     render(<TeacherChatPanel projectId="p" sourceId="c" />);
-    const help = screen.getByRole('button', { name: '帮我看看', exact: true });
-    await waitFor(() => expect(help).toBeEnabled());
-    fireEvent.change(screen.getByLabelText('向智能体提问'), { target: { value: '我自己还想问的另一件事' } });
-    fireEvent.click(help);
+    const input = screen.getByLabelText('向智能体提问');
+    const help = () => screen.getByText('继续看看👀', { selector: 'form .consultation-hint' });
+    await waitFor(() => expect(help()).toBeEnabled());
+    expect(screen.getByTestId('consultation-composer-actions')).toContainElement(help());
+    expect(help()).toHaveAccessibleName('继续看看👀');
+    expect(api.send).not.toHaveBeenCalled();
+    fireEvent.change(input, { target: { value: '我先自己想想' } });
+    expect(screen.queryByText('继续看看👀', { selector: 'form .consultation-hint' })).not.toBeInTheDocument();
+    expect(api.send).not.toHaveBeenCalled();
+    fireEvent.change(input, { target: { value: '   ' } });
+    expect(help()).toBeEnabled();
+    fireEvent.change(input, { target: { value: '' } });
+    expect(help()).toBeEnabled();
+    expect(api.send).not.toHaveBeenCalled();
+    fireEvent.click(help());
+    fireEvent.click(help());
 
     await screen.findByText('我看看你最近做到了哪里…');
     expect(screen.queryByText(streamingJson)).not.toBeInTheDocument();
     expect(screen.queryByRole('button', { name: '尚未确认的问题' })).not.toBeInTheDocument();
+    expect(api.send).toHaveBeenCalledTimes(1);
     expect(api.send).toHaveBeenCalledWith('p/agent-topics', 'first', expect.objectContaining({
-      intent: 'suggestions', text: '帮我看看', sourceConversationId: 'c',
+      intent: 'suggestions', text: '继续看看👀', sourceConversationId: 'c',
     }));
-    expect(screen.getByLabelText('向智能体提问')).toHaveValue('我自己还想问的另一件事');
-    expect(screen.getByRole('button', { name: '帮我看看', exact: true })).toBeDisabled();
+    expect(help()).toBeDisabled();
+    fireEvent.change(input, { target: { value: '我自己还想问的另一件事' } });
+    expect(screen.queryByText('继续看看👀', { selector: 'form .consultation-hint' })).not.toBeInTheDocument();
     await waitFor(() => expect(streams.has('first')).toBe(true));
     const sent = api.send.mock.calls[0][2] as TeacherSend;
     act(() => streams.get('first')!.dispatchEvent(new MessageEvent('snapshot', { data: JSON.stringify({
@@ -351,23 +392,21 @@ describe('teacher side chat', () => {
     await screen.findByText('我们可以从最近遇到的这两个地方聊起。');
     expect(screen.queryByText('我看看你最近做到了哪里…')).not.toBeInTheDocument();
     for (const question of suggestedQuestions) expect(screen.getByRole('button', { name: question })).toBeEnabled();
-    expect(screen.getByRole('button', { name: '我也说不清，你带我看看', exact: true })).toBeEnabled();
-    expect(screen.getByRole('button', { name: '帮我看看', exact: true })).toBeEnabled();
+    expect(screen.queryByRole('button', { name: '我也说不清，你带我看看', exact: true })).not.toBeInTheDocument();
+    expect(screen.queryByText('继续看看👀', { selector: 'form .consultation-hint' })).not.toBeInTheDocument();
     expect(api.send).toHaveBeenCalledTimes(1);
-    expect(screen.getByLabelText('向智能体提问')).toHaveValue('我自己还想问的另一件事');
+    expect(input).toHaveValue('我自己还想问的另一件事');
   });
 
-  it.each([
-    [suggestedQuestions[0], undefined],
-    ['我也说不清，你带我看看', 'guided-help'],
-  ] as const)('sends the selected help action "%s" without replacing the student draft', async (text, intent) => {
-    const previous = suggestionsRequest();
+  it.each([suggestedQuestions[0], '我也说不清，你带我看看'])('sends the Agent-generated card "%s" as an ordinary question without replacing the draft', async text => {
+    const previous = suggestionsRequest({ suggestedQuestions: [text] });
     api.read.mockResolvedValue({ ...first, requests: [previous] });
     api.send.mockImplementation(async (_base, _id, input: TeacherSend) => ({
-      ...first, revision: 2, requests: [previous, request({ id: input.requestId, text: input.text, intent: input.intent, response: '我们先从你刚才做的那一步看起。' })],
+      ...first, revision: 2, requests: [previous, request({ id: input.requestId, text: input.text, response: '我们先从你刚才做的那一步看起。' })],
     }));
     const view = render(<TeacherChatPanel projectId="p" sourceId="c" quote={{ kind: 'code', text: '学生正在引用的一段代码' }} />);
     await waitFor(() => expect(screen.getByRole('button', { name: text, exact: true })).toBeEnabled());
+    expect(screen.getAllByRole('button', { name: text, exact: true })).toHaveLength(1);
     fireEvent.change(screen.getByLabelText('向智能体提问'), { target: { value: '还在整理的自由提问' } });
     expect(api.send).not.toHaveBeenCalled();
     fireEvent.click(screen.getByRole('button', { name: text, exact: true }));
@@ -376,7 +415,7 @@ describe('teacher side chat', () => {
     const sent = api.send.mock.calls[0][2] as TeacherSend;
     expect(sent).toMatchObject({ text, sourceConversationId: 'c' });
     expect(sent.references).toEqual([]);
-    expect(sent.intent).toBe(intent);
+    expect(sent.intent).toBeUndefined();
     expect(screen.getByLabelText('向智能体提问')).toHaveValue('还在整理的自由提问');
     expect(screen.getByText('学生正在引用的一段代码')).toBeInTheDocument();
     view.unmount();
@@ -386,30 +425,79 @@ describe('teacher side chat', () => {
     expect(api.send).toHaveBeenCalledTimes(1);
   });
 
-  it('retries an uncertain suggestions request after reopening without losing the student draft', async () => {
+  it('keeps an uncertain suggestions request identity through reopening and draft edits', async () => {
     api.send.mockRejectedValue(new Error('网络暂不可用'));
     const view = render(<TeacherChatPanel projectId="p" sourceId="c" />);
-    await waitFor(() => expect(screen.getByRole('button', { name: '帮我看看', exact: true })).toBeEnabled());
-    fireEvent.change(screen.getByLabelText('向智能体提问'), { target: { value: '我还没写完的问题' } });
-    fireEvent.click(screen.getByRole('button', { name: '帮我看看', exact: true }));
+    await waitFor(() => expect(screen.getByText('继续看看👀', { selector: 'form .consultation-hint' })).toBeEnabled());
+    fireEvent.click(screen.getByText('继续看看👀', { selector: 'form .consultation-hint' }));
     await screen.findByText('网络暂不可用');
+    fireEvent.change(screen.getByLabelText('向智能体提问'), { target: { value: '我还没写完的问题' } });
     const originalRequest = api.send.mock.calls[0][2] as TeacherSend;
     expect(originalRequest.intent).toBe('suggestions');
     view.unmount();
 
     render(<TeacherChatPanel projectId="p" sourceId="c" />);
-    await waitFor(() => expect(screen.getByRole('button', { name: '帮我看看', exact: true })).toBeEnabled());
+    await waitFor(() => expect(screen.getByLabelText('向智能体提问')).toBeEnabled());
     expect(screen.getByLabelText('向智能体提问')).toHaveValue('我还没写完的问题');
+    expect(screen.queryByText('继续看看👀', { selector: 'form .consultation-hint' })).not.toBeInTheDocument();
     expect(api.send).toHaveBeenCalledTimes(1);
-    fireEvent.change(screen.getByLabelText('向智能体提问'), { target: { value: '我又补了一点自己的想法' } });
-    fireEvent.click(screen.getByRole('button', { name: '帮我看看', exact: true }));
+    fireEvent.change(screen.getByLabelText('向智能体提问'), { target: { value: '' } });
+    fireEvent.click(screen.getByText('继续看看👀', { selector: 'form .consultation-hint' }));
     await screen.findByText('网络暂不可用');
     expect(api.send.mock.calls[1][2]).toEqual(originalRequest);
-    expect(screen.getByLabelText('向智能体提问')).toHaveValue('我又补了一点自己的想法');
+    expect(screen.getByLabelText('向智能体提问')).toHaveValue('');
   });
 
-  it('shows a failed suggestion request without leaking raw JSON and starts a fresh request on another try', async () => {
-    const failed = suggestionsRequest({ status: 'failed', response: '{"intro":"未完成', suggestedQuestions: undefined, error: '这次没有看清楚，请再试一次。' });
+  it.each([{ text: '帮我看看', references: undefined }, { text: '给我一点提示', references: [{ kind: 'code' as const, text: '旧请求的引用' }] }])('retries an uncertain legacy hint payload "$text" unchanged with references $references', async ({ text, references }) => {
+    const original: TeacherSend = { requestId: 'legacy-hint-request', text, intent: 'suggestions', sourceConversationId: 'previous-source', ...(references ? { references } : {}) };
+    localStorage.setItem('makelore-consultation-draft:signed-out:p:teacher', JSON.stringify({ text: '', references: [], pending: original }));
+    api.send.mockRejectedValue(new Error('网络暂不可用'));
+    const view = render(<TeacherChatPanel projectId="p" sourceId="c" />);
+    await waitFor(() => expect(screen.getByText('继续看看👀', { selector: 'form .consultation-hint' })).toBeEnabled());
+    expect(api.send).not.toHaveBeenCalled();
+    fireEvent.click(screen.getByText('继续看看👀', { selector: 'form .consultation-hint' }));
+    await screen.findByText('网络暂不可用');
+    expect(JSON.parse(JSON.stringify(api.send.mock.calls[0][2]))).toEqual(original);
+    view.unmount();
+    render(<TeacherChatPanel projectId="p" sourceId="c" />);
+    await waitFor(() => expect(screen.getByText('继续看看👀', { selector: 'form .consultation-hint' })).toBeEnabled());
+    expect(api.send).toHaveBeenCalledTimes(1);
+    fireEvent.click(screen.getByText('继续看看👀', { selector: 'form .consultation-hint' }));
+    await screen.findByText('网络暂不可用');
+    expect(JSON.parse(JSON.stringify(api.send.mock.calls[1][2]))).toEqual(original);
+  });
+
+  it('does not reuse an uncertain legacy hint request for an ordinary typed question with the same text', async () => {
+    const original: TeacherSend = { requestId: 'legacy-hint-request', text: '帮我看看', intent: 'suggestions', references: [] };
+    localStorage.setItem('makelore-consultation-draft:signed-out:p:teacher', JSON.stringify({ text: original.text, references: [], pending: original }));
+    api.send.mockResolvedValue({ ...first, revision: 2 });
+    render(<TeacherChatPanel projectId="p" sourceId="c" />);
+    await waitFor(() => expect(screen.getByRole('button', { name: '提问', exact: true })).toBeEnabled());
+    fireEvent.click(screen.getByRole('button', { name: '提问', exact: true }));
+    await waitFor(() => expect(api.send).toHaveBeenCalledTimes(1));
+    const sent = api.send.mock.calls[0][2] as TeacherSend;
+    expect(sent.requestId).not.toBe(original.requestId);
+    expect(sent.text).toBe(original.text);
+    expect(sent.intent).toBeUndefined();
+  });
+
+  it.each(['completed', 'failed'] as const)('starts a fresh hint when the old hint request is already confirmed %s', async status => {
+    const original: TeacherSend = { requestId: 'legacy-hint-request', text: '帮我看看', intent: 'suggestions' };
+    localStorage.setItem('makelore-consultation-draft:signed-out:p:teacher', JSON.stringify({ text: '', references: [], pending: original }));
+    api.read.mockResolvedValue({ ...first, requests: [suggestionsRequest({ id: original.requestId, text: original.text, status })] });
+    api.send.mockResolvedValue({ ...first, revision: 2 });
+    render(<TeacherChatPanel projectId="p" sourceId="c" />);
+    await waitFor(() => expect(screen.getByText('继续看看👀', { selector: 'form .consultation-hint' })).toBeEnabled());
+    expect(api.send).not.toHaveBeenCalled();
+    fireEvent.click(screen.getByText('继续看看👀', { selector: 'form .consultation-hint' }));
+    await waitFor(() => expect(api.send).toHaveBeenCalledTimes(1));
+    const sent = api.send.mock.calls[0][2] as TeacherSend;
+    expect(sent.requestId).not.toBe(original.requestId);
+    expect(sent).toMatchObject({ text: '继续看看👀', intent: 'suggestions', references: [], sourceConversationId: 'c' });
+  });
+
+  it.each(['failed', 'cancelled', 'interrupted'] as const)('retries a %s suggestion request without leaking raw JSON or reusing its accepted request id', async status => {
+    const failed = suggestionsRequest({ status, response: '{"intro":"未完成', suggestedQuestions: undefined, error: '这次没有看清楚，请再试一次。' });
     api.read.mockResolvedValue({ ...first, requests: [failed] });
     api.send.mockImplementation(async (_base, _id, input: TeacherSend) => ({
       ...first, revision: 2, requests: [failed, suggestionsRequest({ id: input.requestId })],
@@ -418,7 +506,7 @@ describe('teacher side chat', () => {
     await screen.findByText('这次没有看清楚，请再试一次。');
     expect(screen.queryByText('{"intro":"未完成')).not.toBeInTheDocument();
     expect(screen.queryByRole('button', { name: suggestedQuestions[0] })).not.toBeInTheDocument();
-    fireEvent.click(screen.getByRole('button', { name: '再请智能体看看', exact: true }));
+    fireEvent.click(screen.getByText('继续看看👀', { selector: '.consultation-retry' }));
     await screen.findByText('我们可以从最近遇到的这两个地方聊起。');
     expect(api.send.mock.calls[0][2]).toMatchObject({ intent: 'suggestions' });
     expect(api.send.mock.calls[0][2].requestId).not.toBe(failed.id);
@@ -430,11 +518,11 @@ describe('teacher side chat', () => {
       ...first, revision: 3, requests: [accepted, suggestionsRequest({ id: input.requestId })],
     }));
     const view = render(<TeacherChatPanel projectId="p" sourceId="c" />);
-    await waitFor(() => expect(screen.getByRole('button', { name: '帮我看看', exact: true })).toBeEnabled());
+    await waitFor(() => expect(screen.getByText('继续看看👀', { selector: 'form .consultation-hint' })).toBeEnabled());
     await waitFor(() => expect(streams.has('first')).toBe(true));
-    fireEvent.change(screen.getByLabelText('向智能体提问'), { target: { value: '我的自由提问继续留着' } });
-    fireEvent.click(screen.getByRole('button', { name: '帮我看看', exact: true }));
+    fireEvent.click(screen.getByText('继续看看👀', { selector: 'form .consultation-hint' }));
     await screen.findByText('响应中途断开');
+    fireEvent.change(screen.getByLabelText('向智能体提问'), { target: { value: '我的自由提问继续留着' } });
     const originalRequest = api.send.mock.calls[0][2] as TeacherSend;
     accepted = suggestionsRequest({ id: originalRequest.requestId, status: 'failed', response: '', suggestedQuestions: undefined, error: '智能体已接到，但这次回复失败了' });
     const recovered = { ...first, revision: 2, requests: [accepted] };
@@ -446,10 +534,10 @@ describe('teacher side chat', () => {
       act(() => streams.get('first')!.dispatchEvent(new MessageEvent('snapshot', { data: JSON.stringify(recovered) })));
     }
     await screen.findByText('智能体已接到，但这次回复失败了');
-    await waitFor(() => expect(screen.getByRole('button', { name: '再请智能体看看', exact: true })).toBeEnabled());
+    await waitFor(() => expect(screen.getByText('继续看看👀', { selector: '.consultation-retry' })).toBeEnabled());
     expect(screen.getByLabelText('向智能体提问')).toHaveValue('我的自由提问继续留着');
     expect(api.send).toHaveBeenCalledTimes(1);
-    fireEvent.click(screen.getByRole('button', { name: '再请智能体看看', exact: true }));
+    fireEvent.click(screen.getByText('继续看看👀', { selector: '.consultation-retry' }));
     await screen.findByText('我们可以从最近遇到的这两个地方聊起。');
     expect(api.send).toHaveBeenCalledTimes(2);
     expect(api.send.mock.calls[1][2].requestId).not.toBe(originalRequest.requestId);
@@ -472,7 +560,7 @@ describe('teacher side chat', () => {
     expect(api.send.mock.calls[0][2].intent).toBeUndefined();
     expect(screen.getByLabelText('向智能体提问')).toHaveValue('');
     expect(screen.queryByRole('button', { name: '移除引用' })).not.toBeInTheDocument();
-    expect(screen.getByRole('button', { name: '帮我看看', exact: true })).toBeEnabled();
+    expect(screen.getByText('继续看看👀', { selector: 'form .consultation-hint' })).toBeEnabled();
     view.unmount();
     render(<TeacherChatPanel projectId="p" sourceId="c" />);
     expect(screen.getByLabelText('向智能体提问')).toHaveValue('');
@@ -560,116 +648,133 @@ describe('teacher side chat', () => {
     fireEvent.click(screen.getByRole('button', { name: '运营配置的预览问题' }));
     expect(screen.getByLabelText('向智能体提问')).toHaveValue('运营配置的预览问题');
     expect(api.send).not.toHaveBeenCalled();
-    expect(screen.queryByRole('button', { name: '帮我看看', exact: true })).not.toBeInTheDocument();
+    expect(screen.queryByText('继续看看👀', { selector: 'form .consultation-hint' })).not.toBeInTheDocument();
     fireEvent.click(screen.getByRole('button', { name: '智能体新话题' }));
     await waitFor(() => expect(api.create).toHaveBeenCalledWith('preview/sample', 7, '学生的练习代码', undefined));
   });
 });
 
 
-describe('pinned discussion workspace', () => {
-  const ideas = { id: 'tool', revision: 1, status: 'active' as const, content: {
-    kind: 'ideas' as const, title: '一起想我的宠物游戏', items: [{ id: 'dog', text: '养只小狗', state: 'kept' as const }],
-  } };
-  async function openDiscussion(status: 'active' | 'offered' = 'active') {
-    const current = { ...structuredClone(first), discussion: { ...structuredClone(ideas), status } };
+describe('legacy discussion history compatibility', () => {
+  const contents = [
+    { kind: 'ideas', title: '旧想法组件', items: [{ id: 'dog', text: '养只小狗', state: 'kept' }] },
+    { kind: 'structure', title: '旧结构组件', nodes: [{ id: 'dog', label: '照顾小狗' }] },
+    { kind: 'flow', title: '旧流程组件', nodes: [{ id: 'home', kind: 'event', label: '我回到家' }], edges: [] },
+    { kind: 'comparison', title: '旧对比组件', columns: [{ id: 'a', label: '主动回应' }], rows: [{ id: 'home', label: '回到家时', cells: [{ columnId: 'a', text: '跑来欢迎我' }] }] },
+  ];
+  const histories = contents.flatMap(content => ['active', 'offered', 'paused', 'finished'].map(status => ({ kind: content.kind, status, content })));
+  it.each(histories)('reads $kind / $status history as ordinary replies with working quick cards and free input', async ({ status, content }) => {
+    const current = { ...structuredClone(first), discussion: { id: 'legacy-tool', revision: 3, status, content }, requests: [request({
+      presentation: 'discussion-v1', discussionSnapshot: content, discussionContext: { toolId: 'legacy-tool', revision: 3 },
+      response: '先听听你的想法。', suggestedQuestions: ['怎样知道小狗喜欢我？'],
+    })] } as TeacherTopic;
+    api.read.mockResolvedValue(current);
+    api.send.mockImplementation(async (_base, _id, input: TeacherSend) => ({ ...current, revision: current.revision + 1, requests: [...current.requests, request({ id: input.requestId, text: input.text, response: '我们就从这个问题聊起。' })] }));
+    render(<TeacherChatPanel projectId="p" sourceId="c" />);
+    const card = await screen.findByRole('button', { name: '怎样知道小狗喜欢我？' });
+    expect(screen.getByText('先听听你的想法。')).toBeVisible();
+    expect(screen.queryByTestId('teacher-discussion')).not.toBeInTheDocument();
+    expect(screen.queryByText(content.title)).not.toBeInTheDocument();
+    expect(screen.queryByRole('button', { name: /用这个一起想|先这些|接着改|把想法理一理|聊聊这一点|取消讨论焦点/ })).not.toBeInTheDocument();
+    const input = screen.getByLabelText('向智能体提问');
+    fireEvent.change(input, { target: { value: '自己的草稿' } });
+    fireEvent.click(card);
+    await screen.findByText('我们就从这个问题聊起。');
+    expect(api.send.mock.calls[0][2]).toEqual({ requestId: expect.any(String), text: '怎样知道小狗喜欢我？', references: [], sourceConversationId: 'c' });
+    expect(input).toHaveValue('自己的草稿');
+    fireEvent.click(screen.getByRole('button', { name: '提问', exact: true }));
+    await waitFor(() => expect(api.send).toHaveBeenCalledTimes(2));
+    expect(api.send.mock.calls[1][2]).toEqual({ requestId: expect.any(String), text: '自己的草稿', references: [], sourceConversationId: 'c' });
+    await waitFor(() => expect(input).toHaveValue(''));
+    expect(screen.queryByTestId('teacher-discussion')).not.toBeInTheDocument();
+  });
+
+  it('keeps live text and cancellation working when snapshots still contain legacy component fields', async () => {
+    const current = { ...structuredClone(first), discussion: { id: 'tool', revision: 1, status: 'active', content: contents[0] } } as TeacherTopic;
     api.read.mockResolvedValue(current);
     render(<TeacherChatPanel projectId="p" sourceId="c" />);
-    await screen.findByText('一起想我的宠物游戏');
-    await waitFor(() => expect(streams.has('first')).toBe(true));
-    return current;
-  }
-  it('quotes a focused item into the existing composer without sending, then sends the locked version', async () => {
-    const current = await openDiscussion();
-    api.send.mockImplementation(async (_base, _id, input) => ({ ...current, revision: 2, requests: [request({ text: input.text, response: '先聊聊小狗。' })] }));
-    fireEvent.click(screen.getByRole('button', { name: '养只小狗', exact: true }));
-    expect(api.send).not.toHaveBeenCalled();
-    expect(screen.getByText('接着聊：养只小狗')).toBeVisible();
-    fireEvent.change(screen.getByLabelText('向智能体提问'), { target: { value: '我希望是柯基' } });
-    fireEvent.click(screen.getByRole('button', { name: '提问', exact: true }));
-    await waitFor(() => expect(api.send).toHaveBeenCalledWith('p/agent-topics', 'first', expect.objectContaining({ presentation: 'discussion-v1', discussion: { toolId: 'tool', revision: 1, focusId: 'dog' }, text: '我希望是柯基' })));
-    expect(screen.getAllByTestId('teacher-discussion')).toHaveLength(1);
-  });
-  it('finishes provisionally, keeps the draft, chats without changing the tool, and resumes explicitly', async () => {
-    const current = await openDiscussion();
-    api.updateDiscussion.mockResolvedValueOnce({ ...current, revision: 2, discussion: { ...ideas, status: 'finished', revision: 2 } });
-    fireEvent.change(screen.getByLabelText('向智能体提问'), { target: { value: '还在想的下一句' } });
-    fireEvent.click(screen.getByRole('button', { name: '先这些', exact: true }));
-    await screen.findByText('先留在这里');
-    expect(screen.getByLabelText('向智能体提问')).toHaveValue('还在想的下一句');
-    expect(screen.getByTestId('teacher-discussion')).toHaveAttribute('data-collapsed', 'true');
-    api.send.mockImplementation(async (_base, _id, input) => ({ ...current, revision: 3, discussion: { ...ideas, status: 'finished', revision: 2 }, requests: [request({ text: input.text, response: '我们慢慢聊。' })] }));
-    fireEvent.click(screen.getByRole('button', { name: '提问', exact: true }));
-    await screen.findByText('我们慢慢聊。');
-    expect(api.send.mock.calls[0][2].discussion).toBeUndefined();
-    api.updateDiscussion.mockResolvedValueOnce({ ...current, revision: 4, discussion: { ...ideas, revision: 3 } });
-    fireEvent.click(screen.getByRole('button', { name: '接着改', exact: true }));
-    await screen.findByRole('button', { name: '养只小狗', exact: true });
-    expect(api.updateDiscussion.mock.calls[1][2]).toEqual({ toolId: 'tool', revision: 2, action: 'resume' });
-  });
-  it('offers a tool before activating, and preserves a draft during explicit structure conversion', async () => {
-    const current = await openDiscussion('offered');
-    api.updateDiscussion.mockResolvedValue({ ...current, revision: 2, discussion: { ...ideas, revision: 2 } });
-    expect(screen.getByRole('button', { name: '养只小狗', exact: true })).toBeDisabled();
-    fireEvent.click(screen.getByRole('button', { name: '用这个一起想', exact: true }));
-    await screen.findByRole('button', { name: '把想法理一理', exact: true });
-    fireEvent.change(screen.getByLabelText('向智能体提问'), { target: { value: '不要丢掉的草稿' } });
-    api.send.mockResolvedValue({ ...current, revision: 3, discussion: { ...ideas, revision: 2 }, requests: [] });
-    fireEvent.click(screen.getByRole('button', { name: '把想法理一理', exact: true }));
-    await waitFor(() => expect(api.send).toHaveBeenCalled());
-    expect(api.send.mock.calls[0][2].discussion).toEqual({ toolId: 'tool', revision: 2, transition: 'structure' });
-    expect(screen.getByLabelText('向智能体提问')).toHaveValue('不要丢掉的草稿');
-  });
-  it('uses the same pinned component for SSE updates and leaves it untouched while thinking or stopping', async () => {
-    const current = await openDiscussion();
+    await ready();
     const stream = streams.get('first')!;
     const updating = { ...current, revision: 2, requests: [request({ status: 'running', response: '', discussionContext: { toolId: 'tool', revision: 1 } })] };
     act(() => stream.dispatchEvent(new MessageEvent('snapshot', { data: JSON.stringify(updating) })));
-    expect(screen.getByRole('status')).toHaveTextContent('正在梳理');
-    expect(screen.getByRole('button', { name: '养只小狗', exact: true })).toBeVisible();
+    expect(screen.getByRole('status')).toHaveTextContent('智能体正在想');
+    expect(screen.queryByTestId('teacher-discussion')).not.toBeInTheDocument();
     fireEvent.change(screen.getByLabelText('向智能体提问'), { target: { value: '下一轮草稿' } });
     api.cancel.mockResolvedValue({ ...updating, revision: 3, requests: [request({ status: 'cancelled' })] });
     fireEvent.click(screen.getByRole('button', { name: '停止回复' }));
     await screen.findByText('这次先停在这里。想继续时可以再说说。');
     expect(screen.getByLabelText('向智能体提问')).toHaveValue('下一轮草稿');
-    act(() => stream.dispatchEvent(new MessageEvent('snapshot', { data: JSON.stringify({ ...current, revision: 4, discussion: { ...ideas, revision: 2, content: { ...ideas.content, title: '一起想小狗和花园' } } }) })));
-    expect(screen.getAllByTestId('teacher-discussion')).toHaveLength(1);
-    expect(screen.getByText('一起想小狗和花园')).toBeVisible();
-  });
-  it('sends a normal suggested question directly without changing the composer draft', async () => {
-    const current = { ...first, requests: [request({ response: '先听听你的想法。', suggestedQuestions: ['怎样知道小狗喜欢我？'] })] };
-    api.read.mockResolvedValue(current);
-    api.send.mockResolvedValue({ ...current, revision: 2 });
-    render(<TeacherChatPanel projectId="p" sourceId="c" />);
-    await screen.findByRole('button', { name: '怎样知道小狗喜欢我？' });
-    fireEvent.change(screen.getByLabelText('向智能体提问'), { target: { value: '自己的草稿' } });
-    fireEvent.click(screen.getByRole('button', { name: '怎样知道小狗喜欢我？' }));
-    await waitFor(() => expect(api.send).toHaveBeenCalled());
-    expect(api.send.mock.calls[0][2].text).toBe('怎样知道小狗喜欢我？');
-    expect(screen.getByLabelText('向智能体提问')).toHaveValue('自己的草稿');
+    act(() => stream.dispatchEvent(new MessageEvent('snapshot', { data: JSON.stringify({ ...current, revision: 4, discussion: { unknownLegacyShape: true }, requests: [request({ response: '旧历史继续显示普通回复。', suggestedQuestions: ['接着问一个问题'] })] }) })));
+    expect(screen.getByText('旧历史继续显示普通回复。')).toBeVisible();
+    expect(screen.getByRole('button', { name: '接着问一个问题' })).toBeEnabled();
     expect(screen.queryByTestId('teacher-discussion')).not.toBeInTheDocument();
   });
-});
 
-
-it('comparison focuses and directly sends the selected difference while preserving the existing draft', async () => {
-  const current = { ...first, discussion: { id: 'compare', revision: 3, status: 'active' as const, content: {
-    kind: 'comparison' as const, title: '它什么时候回应我？', columns: [{ id: 'a', label: '点击才回应' }, { id: 'b', label: '主动回应' }], rows: [{ id: 'home', label: '回到家时', cells: [{ columnId: 'a', text: '等我点击' }, { columnId: 'b', text: '跑来欢迎我' }] }],
-  } } };
-  api.read.mockResolvedValue(current);
-  api.send.mockResolvedValue({ ...current, revision: 2 });
-  render(<TeacherChatPanel projectId="p" sourceId="c" />);
-  await screen.findByText('回到家时');
-  fireEvent.change(screen.getByLabelText('向智能体提问'), { target: { value: '自己还没说完的话' } });
-  fireEvent.click(screen.getAllByRole('button', { name: '聊聊这一点' })[1]);
-  await waitFor(() => expect(api.send).toHaveBeenCalled());
-  expect(api.send.mock.calls[0][2]).toMatchObject({ text: '聊聊「回到家时」时，「主动回应」这一点：跑来欢迎我', discussion: { toolId: 'compare', revision: 3, focusId: 'home:b' } });
-  expect(screen.getByLabelText('向智能体提问')).toHaveValue('自己还没说完的话');
-  expect(screen.getAllByTestId('teacher-discussion')).toHaveLength(1);
+  it('removes retired fields from a persisted pending send without changing its draft, references or retry id', async () => {
+    const key = 'makelore-consultation-draft:signed-out:p:teacher';
+    const references = [{ kind: 'code', text: 'const pet = "dog";' }];
+    const original = { requestId: 'pending-before-component-removal', text: '继续聊这件事', references, intent: 'question', sourceConversationId: 'previous-source' };
+    localStorage.setItem(key, JSON.stringify({ text: original.text, references, pending: { ...original, presentation: 'discussion-v1', discussion: { toolId: 'tool', revision: 2, focusId: 'dog', transition: 'structure' } } }));
+    api.send.mockRejectedValueOnce(new Error('网络暂不可用'));
+    const view = render(<TeacherChatPanel projectId="p" sourceId="c" />);
+    await waitFor(() => expect(screen.getByRole('button', { name: '提问', exact: true })).toBeEnabled());
+    expect(screen.getByLabelText('向智能体提问')).toHaveValue(original.text);
+    expect(screen.getByText(references[0].text)).toBeVisible();
+    expect(JSON.parse(localStorage.getItem(key)!).pending).toEqual(original);
+    fireEvent.click(screen.getByRole('button', { name: '提问', exact: true }));
+    await screen.findByText('网络暂不可用');
+    expect(api.send.mock.calls[0][2]).toEqual(original);
+    view.unmount();
+    api.send.mockResolvedValue({ ...first, revision: 2, requests: [request({ id: original.requestId, text: original.text, response: '可以，我们继续。' })] });
+    render(<TeacherChatPanel projectId="p" sourceId="c" />);
+    await waitFor(() => expect(screen.getByRole('button', { name: '提问', exact: true })).toBeEnabled());
+    fireEvent.click(screen.getByRole('button', { name: '提问', exact: true }));
+    await screen.findByText('可以，我们继续。');
+    expect(api.send.mock.calls[1][2]).toEqual(original);
+    expect(screen.getByLabelText('向智能体提问')).toHaveValue('');
+    expect(screen.queryByText(references[0].text)).not.toBeInTheDocument();
+  });
 });
 
 
 describe('merged cloud teacher classroom', () => {
+  it.each([false, true])('retains an uncertain hint identity and project across continuous-chat upgrades (scoped: %s)', async scoped => {
+    const teacherId = `pending-agent-${scoped}`;
+    const published = { ...definition, config_id: teacherId };
+    const agent = { teacher_id: teacherId, version: 2, definition: published, is_default: true };
+    const original: TeacherSend = {
+      requestId: 'uncertain-before-upgrade', text: scoped ? '给我一点提示' : '帮我看看',
+      intent: 'suggestions', sourceConversationId: 'original-source',
+      ...(scoped ? { projectId: 'p' } : {}),
+    };
+    const key = scoped ? `makelore-consultation-draft:signed-out:agent:${teacherId}`
+      : `makelore-consultation-draft:signed-out:p:agent:${teacherId}`;
+    localStorage.setItem(key, JSON.stringify({ text: '', references: [], pending: {
+      ...original, presentation: 'discussion-v1', discussion: { toolId: 'retired', revision: 1 },
+    } }));
+    api.catalog.mockResolvedValue({ items: [agent] });
+    api.sendConversation.mockRejectedValue(new Error('结果暂未确认'));
+    const props = { projectId: 'p', sourceId: 'current-source', selectedAgent: agent };
+    const view = render(<TeacherChatPanel {...props} />);
+    const hint = () => screen.getByText('继续看看👀', { selector: 'form .consultation-hint' });
+    await waitFor(() => expect(hint()).toBeEnabled());
+    expect(api.sendConversation).not.toHaveBeenCalled();
+    fireEvent.click(hint());
+    await screen.findByText('结果暂未确认');
+    expect(api.sendConversation).toHaveBeenCalledWith(teacherId, { ...original, projectId: 'p' });
+    view.rerender(<TeacherChatPanel {...props} projectId="another-project" />);
+    fireEvent.click(hint());
+    await screen.findByText('上次提问仍绑定原项目，请切回原项目确认结果后重试。');
+    expect(api.sendConversation).toHaveBeenCalledTimes(1);
+    view.rerender(<TeacherChatPanel {...props} />);
+    fireEvent.click(hint());
+    await screen.findByText('结果暂未确认');
+    expect(api.sendConversation).toHaveBeenCalledTimes(2);
+    expect(api.sendConversation.mock.calls[1][1]).toEqual({ ...original, projectId: 'p' });
+    expect(api.create).not.toHaveBeenCalled();
+    expect(api.send).not.toHaveBeenCalled();
+  });
+
   it('keeps an old unassigned project draft readable without copying it to the selected agent', async () => {
     const published = { ...definition, config_id: 'one' };
     const original = JSON.stringify({ text: '旧项目草稿', references: [{ kind: 'code', text: '旧引用' }] });
@@ -709,7 +814,9 @@ describe('merged cloud teacher classroom', () => {
     fireEvent.click(screen.getByRole('button', { name: '提问', exact: true }));
     await screen.findByText('先看看玩家会做什么。');
     expect(api.create).not.toHaveBeenCalled();
-    expect(api.sendConversation).toHaveBeenCalledWith('algorithm', expect.objectContaining({ projectId: 'p', sourceConversationId: 'c', presentation: 'discussion-v1' }));
+    expect(api.sendConversation).toHaveBeenCalledWith('algorithm', {
+      requestId: expect.any(String), text: '我想做一个小游戏', references: [], projectId: 'p', sourceConversationId: 'c',
+    });
     expect(screen.getByRole('complementary', { name: '算法智能体咨询' })).toBeVisible();
   });
 
@@ -718,9 +825,10 @@ describe('merged cloud teacher classroom', () => {
     render(<TeacherChatPanel projectId="p" sourceId="c" />);
     await waitFor(() => expect(screen.getByText('智能体暂未开放，历史仍可查看。')).toBeVisible());
     const input = screen.getByLabelText('向智能体提问');
+    expect(screen.getByText('继续看看👀', { selector: 'form .consultation-hint' })).toBeDisabled();
     fireEvent.change(input, { target: { value: '继续讨论' } });
     expect(screen.getByRole('button', { name: '提问', exact: true })).toBeDisabled();
-    expect(screen.getByRole('button', { name: '帮我看看', exact: true })).toBeDisabled();
+    expect(screen.queryByText('继续看看👀', { selector: 'form .consultation-hint' })).not.toBeInTheDocument();
     fireEvent.keyDown(input, { key: 'Enter' });
     expect(api.send).not.toHaveBeenCalled();
   });
diff --git a/tests/unit/coding-teacher.test.ts b/tests/unit/coding-teacher.test.ts
index 51e09257..62cbfd50 100644
--- a/tests/unit/coding-teacher.test.ts
+++ b/tests/unit/coding-teacher.test.ts
@@ -9,7 +9,8 @@ import { compileTeacherContext, estimateTeacherTokens, sourceContext } from '../
 const TEACHER_BEHAVIOR_PROMPT = '你是麦洛的创作老师';
 import { streamTeacherReply } from '../../electron/coding-teacher/model-runner';
 import { TeacherError } from '../../electron/coding-teacher/config-client';
-import { parseTeacherSuggestions } from '../../electron/coding-teacher/suggestions';
+import { teacherReplyInstructions } from '../../electron/coding-teacher/reply';
+import { createTeacherReadTools, type TeacherReadAccess } from '../../electron/coding-teacher/read-tools';
 import {
   createCodingProjectStore,
   createMemoryCodingProjectStorage,
@@ -81,6 +82,7 @@ async function fixture({ durableSource = false, sourceContext = context, liveMod
   const scope = { projectId: created.project.id, sourceId: source.id };
   let enabled = true,
     version = 1,
+    cloudVersion = 9,
     accountCurrent = true;
   let finish: () => void = () => undefined;
   let reply = '计数器保存一个数字。';
@@ -108,7 +110,7 @@ async function fixture({ durableSource = false, sourceContext = context, liveMod
       if (!accountCurrent) throw new TeacherError(401, 'teacher_account_changed', '账号变化');
     },
     availability: async () => ({ enabled, published_version: version, revision: version }),
-    catalog: cloudTeacher ? async () => ({ items: [{ teacher_id: 'cloud-teacher', version: 9, is_default: true,
+    catalog: cloudTeacher ? async () => ({ items: [{ teacher_id: 'cloud-teacher', version: cloudVersion, is_default: true,
       definition: { ...definition, config_id: 'cloud-teacher', runtime: 'yuxi' as const, system_prompt: '', skills: [],
         yuxi: { agent_slug: 'teacher', agent_version: 2 } } }] }) : undefined,
     version: async (_account, v) => ({
@@ -149,6 +151,7 @@ async function fixture({ durableSource = false, sourceContext = context, liveMod
     nextVersion: () => {
       version++;
     },
+    publishCloudVersion: (next: number) => { cloudVersion = next; },
     switchAccount: () => {
       accountCurrent = false;
     },
@@ -314,7 +317,7 @@ describe('cloud coding teacher', () => {
     await vi.waitFor(async () =>
       expect((await f.service.read(f.scope, topic.id)).requests[0]).toMatchObject({
         status: 'cancelled',
-        response: '计数器保存一个数字。',
+        response: '', unparsedResponse: '计数器保存一个数字。',
       })
     );
   });
@@ -488,7 +491,7 @@ describe('project teacher and friend consultations', () => {
     await f.service.send(scope, topic.id, { requestId, text: '问题', sourceConversationId: f.scope.sourceId });
     await f.service.removeSource(f.scope.projectId, f.scope.sourceId);
     const saved = await f.service.read(scope, topic.id);
-    expect(saved.requests[0]).toMatchObject({ status: 'cancelled', response: '计数器保存一个数字。' });
+    expect(saved.requests[0]).toMatchObject({ status: 'cancelled', response: '', unparsedResponse: '计数器保存一个数字。' });
     expect((await f.service.list(scope)).items.map((item) => item.id)).toEqual([topic.id]);
     await expect(f.service.send(scope, topic.id, { requestId: nextRequestId, text: '再问一次', sourceConversationId: f.scope.sourceId }))
       .rejects.toMatchObject({ code: 'teacher_source_not_found' });
@@ -587,7 +590,7 @@ describe('teacher contextual discussion entry points', () => {
     expect(accepted.requests[0]).toMatchObject({ intent: 'suggestions', status: 'running' });
     expect(accepted.requests[0].suggestedQuestions).toBeUndefined();
     expect(JSON.stringify(f.run.mock.calls[0][0])).toContain('创建计数器');
-    expect(JSON.stringify(f.run.mock.calls[0][0])).toContain('只返回 JSON 对象');
+    expect(f.run.mock.calls[0][0]).toContainEqual({ role: 'system', content: teacherReplyInstructions() });
     const completed = await finishRequest(f, scope, topic.id);
     expect(completed.requests[0]).toMatchObject({
       intent: 'suggestions', text: '老师，帮我看看', status: 'completed', response: intro, suggestedQuestions: questions,
@@ -609,21 +612,20 @@ describe('teacher contextual discussion entry points', () => {
     expect(completed.definition.system_prompt).toBe(definition.system_prompt);
   });
 
-  it.each(['not JSON', JSON.stringify({ intro, questions: ['只有一个问题？'] })])('fails malformed suggestions without displaying raw output or losing usage: %s', async (invalid) => {
+  it.each([
+    ['只有正文也可以。', '只有正文也可以。', []],
+    [JSON.stringify({ intro, questions: ['【我想聊】先说说数字怎么变。'] }), intro, ['【我想聊】先说说数字怎么变。']],
+  ])('accepts configured prose or one quick reply without old count rules: %s', async (raw, reply, quickReplies) => {
     const f = await fixture();
     const scope = newScope(f);
     const topic = await f.service.create(scope);
-    f.replyWith(invalid);
+    f.replyWith(raw as string);
     await f.service.send(scope, topic.id, { requestId, intent: 'suggestions', text: '老师，帮我看看' });
     const completed = await finishRequest(f, scope, topic.id);
-    expect(completed.requests[0]).toMatchObject({ status: 'failed', response: '', usage: { inputTokens: 20, outputTokens: 10 } });
-    expect(completed.requests[0].suggestedQuestions).toBeUndefined();
-    expect(completed.requests[0].error).toContain('请再试一次');
-    const disk = JSON.parse(await readFile(path.join(
-      f.created.project.path, '.makelore/teacher-conversations', topic.accountId, 'project', topic.id + '.json'
-    ), 'utf8'));
-    expect(disk.requests[0].response).toBe('');
-    expect(disk.requests[0].suggestedQuestions).toBeUndefined();
+    expect(completed.requests[0]).toMatchObject({
+      status: 'completed', response: reply, suggestedQuestions: quickReplies,
+      usage: { inputTokens: 20, outputTokens: 10 },
+    });
   });
 
   it('does not treat a cancelled response as valid suggestions even when its JSON is complete', async () => {
@@ -640,6 +642,24 @@ describe('teacher contextual discussion entry points', () => {
     });
   });
 
+  it('retains received bytes when a cancelled runner resolves instead of throwing', async () => {
+    const f = await fixture();
+    const scope = newScope(f);
+    const topic = await f.service.create(scope);
+    f.run.mockImplementationOnce(async (_messages, signal, onText) => {
+      onText(response);
+      await new Promise<void>(resolve => signal.addEventListener('abort', () => resolve(), { once: true }));
+      return { inputTokens: 20, outputTokens: 10 };
+    });
+    await f.service.send(scope, topic.id, { requestId, intent: 'suggestions', text: '帮我看看' });
+    await f.service.cancel(scope, topic.id, requestId);
+    await vi.waitFor(async () => expect((await f.service.read(scope, topic.id)).requests[0]).toMatchObject({
+      status: 'cancelled', response: '', unparsedResponse: response,
+      usage: { inputTokens: 20, outputTokens: 10 },
+    }));
+    expect((await f.service.read(scope, topic.id)).requests[0].suggestedQuestions).toBeUndefined();
+  });
+
   it('does not parse suggestions after a failed stream or account change', async () => {
     const f = await fixture();
     const scope = newScope(f);
@@ -688,9 +708,9 @@ describe('teacher contextual discussion entry points', () => {
     expect(completed.requests[0]).toMatchObject({
       intent: 'guided-help', status: 'completed', response: '先想一个人：你希望谁来用你的计数器？',
     });
-    expect(completed.requests[0].suggestedQuestions).toBeUndefined();
+    expect(completed.requests[0].suggestedQuestions).toEqual([]);
     const messages = f.run.mock.calls[0][0];
-    expect(messages.at(-1).content).toContain('只发起一个具体、容易回答的交流起点');
+    expect(messages.at(-1).content).toContain('推荐一个具体切入点');
     expect(messages[0]).toEqual(compileTeacherContext(definition, context, [], '问题', [], undefined, 'question', undefined, true).messages[0]);
   });
 
@@ -741,33 +761,23 @@ describe('teacher contextual discussion entry points', () => {
     const suggestions = compileTeacherContext(definition, empty, [], '老师，帮我看看', [], 8000, 'suggestions');
     expect(suggestions.messages[0]).toEqual(ordinary.messages[0]);
     expect(suggestions.messages.at(-1)?.content).toContain('没有可用上下文时');
-    expect(suggestions.messages.at(-1)?.content).toContain('不要编造');
+    expect(suggestions.messages.at(-1)?.content).toContain('不编造');
     expect(() => compileTeacherContext(definition, empty, [], '老师，帮我看看', [], estimateTeacherTokens(ordinary.messages), 'suggestions'))
       .toThrow('超过上下文预算');
   });
 
-  it('trims and deduplicates valid suggestions, accepting plain JSON and standard JSON code fences', () => {
-    const raw = JSON.stringify({ intro: '  ' + intro + '  ', questions: ['  ' + questions[0], questions[1], questions[0] + '  '] });
-    expect(parseTeacherSuggestions(raw)).toEqual({ intro, questions });
-    expect(parseTeacherSuggestions('```json\n' + raw + '\n```')).toEqual({ intro, questions });
-    expect(parseTeacherSuggestions('```\n' + raw + '\n```')).toEqual({ intro, questions });
+  it.each(['suggestions', 'guided-help'] as const)('recommends one concrete starting point for %s without local expression policy', (intent) => {
+    const selected = { ...definition, system_prompt: '云端配置：正文长度随内容，选项保留【我想聊】前缀。' };
+    const compiled = compileTeacherContext(selected, context, [], '帮我看看', [], 8000, intent, teacherReplyInstructions());
+    const current = compiled.messages.at(-1)!.content;
+    expect(current).toContain('推荐一个具体切入点');
+    expect(current).toContain('快捷回复围绕这个切入点');
+    expect(compiled.messages[0].content).toContain(selected.system_prompt);
+    const local = compiled.messages.slice(1).map(message => message.content).join('\n');
+    for (const removed of ['400 字', '120 字', '2–3', '简短中文', '学生口吻', 'Alice', '组件', '先这些'])
+      expect(local).not.toContain(removed);
   });
 
-  it.each([
-    null,
-    [],
-    { intro: '', questions },
-    { intro: ' '.repeat(3), questions },
-    { intro: '字'.repeat(401), questions },
-    { intro, questions: [questions[0]] },
-    { intro, questions: [...questions, '第三个？', '第四个？'] },
-    { intro, questions: [questions[0], questions[0]] },
-    { intro, questions: [questions[0], ''] },
-    { intro, questions: [questions[0], '字'.repeat(121)] },
-    { intro, questions: [questions[0], 1] },
-  ])('rejects suggestion responses that cannot become two or three short questions: %j', (value) => {
-    expect(() => parseTeacherSuggestions(JSON.stringify(value))).toThrow('请再试一次');
-  });
 });
 
 describe('project teacher check-ins', () => {
@@ -812,7 +822,7 @@ describe('project teacher check-ins', () => {
     expect(JSON.stringify(messages)).toContain('创建计数器');
     expect(JSON.stringify(messages)).toContain('变量是什么意思');
     expect(messages.at(-1)).toMatchObject({ role: 'system' });
-    expect(messages.at(-1).content).toContain('保持简短');
+    expect(messages.at(-1).content).toContain('表达方式遵循已配置的要求');
     expect(messages.at(-1).content).toContain('按照已配置的人设和职责');
     expect(messages.at(-1).content).toContain('不声称实际运行');
     expect(f.prepareModel).toHaveBeenLastCalledWith(expect.anything(), selected.definition, expect.objectContaining({
@@ -1279,7 +1289,120 @@ it.each(['agent', 'teacher'] as const)('routes project-level %s config and topic
 
 
 describe('structured teacher service integration', () => {
-  it.each(['suggestions', 'discussion'] as const)('parses only final %s JSON after the real local runner reads a project file', async (format) => {
+  it('keeps continuous chat scopes, releases and usage while archived components remain inert', async () => {
+    const f = await fixture({ cloudTeacher: true, mockCloud: true });
+    const agentId = 'cloud-teacher';
+    const firstInput = { projectId: f.scope.projectId, sourceConversationId: f.scope.sourceId,
+      requestId: crypto.randomUUID(), text: '接着看看数字改变的时机' };
+    const reply = '先看数字改变前后，玩家能收到什么反馈。';
+    const quickReplies = ['【想试试】先观察数字变化', '【还不确定】说说我期待的反馈'];
+    f.replyWith(JSON.stringify({ reply, quickReplies, tool: { kind: 'flow', title: 'DISCARDED_COMPONENT_OUTPUT' } }));
+    await f.service.sendConversation(agentId, firstInput);
+    f.finish();
+    await vi.waitFor(async () => expect((await f.service.conversation(agentId)).topic?.requests[0].status).toBe('completed'));
+    const first = (await f.service.conversation(agentId)).topic!;
+    expect(first.requests[0]).toMatchObject({ id: firstInput.requestId, text: firstInput.text,
+      projectId: firstInput.projectId, sourceConversationId: firstInput.sourceConversationId,
+      projectName: f.created.project.name, teacherVersion: 9, presentation: 'reply-v1', response: reply,
+      suggestedQuestions: quickReplies, usage: { inputTokens: 20, outputTokens: 10 } });
+    expect(first.requests[0].runtimeThreadId).toBeTruthy();
+    expect(first.requests[0]).not.toHaveProperty('discussionSnapshot');
+    await f.service.dispose();
+
+    // Simulate a continuous conversation saved by the pre-cleanup release. Its
+    // top-level and per-project component archives must not overwrite each other.
+    const directory = path.join(f.root, 'agent-conversations', first.accountId, agentId);
+    const manifestFile = path.join(directory, 'conversation.json');
+    const manifest = JSON.parse(await readFile(manifestFile, 'utf8'));
+    const legacy = { id: 'old-component', revision: -1, status: 'active', content: { kind: 'ideas', title: 'ARCHIVED_COMPONENT_TOPIC' } };
+    const projectsArchive = { [f.scope.projectId]: { content: 'ARCHIVED_COMPONENT_PROJECT', previousIdeas: ['unchanged'] } };
+    manifest.topic.discussion = legacy;
+    manifest.topic.conversation.discussions = projectsArchive;
+    await writeFile(manifestFile, JSON.stringify(manifest));
+    const turnFile = path.join(directory, 'turns', firstInput.requestId + '.json');
+    const oldTurn = { ...first.requests[0], discussionContext: { focusId: 'ARCHIVED_COMPONENT_FOCUS' },
+      discussionSnapshot: { kind: 'unknown', data: 'ARCHIVED_COMPONENT_SNAPSHOT' },
+      discussionError: 'ARCHIVED_COMPONENT_ERROR', unparsedResponse: 'ARCHIVED_COMPONENT_RAW' };
+    await writeFile(turnFile, JSON.stringify(oldTurn));
+    const service = await f.restart();
+    const secondInput = { ...firstInput, requestId: crypto.randomUUID(), text: quickReplies[0] };
+    await service.sendConversation(agentId, secondInput);
+    const sameSegmentMessages = f.run.mock.calls[1][0];
+    expect(sameSegmentMessages).toContainEqual({ role: 'system', content: teacherReplyInstructions() });
+    expect(JSON.stringify(sameSegmentMessages)).not.toContain(reply);
+    const access = f.prepareCloud.mock.calls[1][3] as TeacherReadAccess;
+    const tools = createTeacherReadTools(access);
+    const historicalText = await tools.execute('read_conversation',
+      JSON.stringify({ message_id: 'teacher:' + firstInput.requestId + ':assistant' }), new AbortController().signal);
+    expect(historicalText).toContain(reply);
+    expect(historicalText).toContain(quickReplies[0]);
+    expect(historicalText).not.toContain('ARCHIVED_COMPONENT_');
+    f.finish();
+    await vi.waitFor(async () => expect((await service.conversation(agentId)).topic?.requests.at(-1)?.status).toBe('completed'));
+    const second = (await service.conversation(agentId)).topic!;
+    expect(second.requests[1].runtimeThreadId).toBe(first.requests[0].runtimeThreadId);
+
+    const other = await f.projects.createProject({ projectPath: path.join(f.root, 'another-project'), identity: { kind: 'create' } });
+    const otherSource = await f.projects.conversationStore(other.project.path).create({
+      agentId: other.config.defaultAgentId!, title: '另一个来源', model: null, modelResolution: 'required',
+    });
+    f.publishCloudVersion(10);
+    const nextInput = { projectId: other.project.id, sourceConversationId: otherSource.id,
+      requestId: crypto.randomUUID(), text: '在新项目里继续聊' };
+    await service.sendConversation(agentId, nextInput);
+    await service.sendConversation(agentId, { ...nextInput,
+      presentation: 'discussion-v1', discussion: { focusId: 'IGNORED_CLIENT_COMPONENT' } } as typeof nextInput);
+    expect(f.run).toHaveBeenCalledTimes(3);
+    const carried = JSON.stringify(f.run.mock.calls[2][0]);
+    expect(carried).toContain(reply);
+    expect(carried).toContain(f.created.project.name);
+    expect(carried).not.toMatch(/ARCHIVED_COMPONENT_|DISCARDED_COMPONENT_OUTPUT|IGNORED_CLIENT_COMPONENT/);
+    expect(f.prepareCloud.mock.calls[2][3]).toMatchObject({ projectPath: other.project.path });
+    f.finish();
+    await vi.waitFor(async () => expect((await service.conversation(agentId)).topic?.requests.at(-1)?.status).toBe('completed'));
+    const completed = (await service.conversation(agentId)).topic!;
+    expect(completed.id).toBe(first.id);
+    expect(completed.requests.map(turn => turn.teacherVersion)).toEqual([9, 9, 10]);
+    expect(completed.requests[2]).toMatchObject({ projectId: other.project.id, projectName: other.project.name,
+      sourceConversationId: otherSource.id, presentation: 'reply-v1', usage: { inputTokens: 20, outputTokens: 10 } });
+    expect(completed.requests[2].runtimeThreadId).not.toBe(first.requests[0].runtimeThreadId);
+    expect(completed.requests[0]).toEqual(oldTurn);
+    expect(completed.discussion).toEqual(legacy);
+    expect(completed.conversation?.discussions).toEqual(projectsArchive);
+    expect(JSON.parse(await readFile(manifestFile, 'utf8')).topic).toMatchObject({
+      discussion: legacy, conversation: { discussions: projectsArchive },
+    });
+    expect(JSON.parse(await readFile(turnFile, 'utf8'))).toEqual(oldTurn);
+    await expect(service.sendConversation(agentId, { ...nextInput, projectId: f.scope.projectId }))
+      .rejects.toMatchObject({ code: 'teacher_request_conflict' });
+    expect(f.run).toHaveBeenCalledTimes(3);
+  });
+
+  it('retains scoped continuous-chat diagnostics when cancellation resolves with usage', async () => {
+    const f = await fixture({ cloudTeacher: true, mockCloud: true });
+    const raw = '{"reply":"收到的未完成正文","tool":{"kind":"ideas"';
+    f.run.mockImplementationOnce(async (_messages, signal, onText) => {
+      onText(raw);
+      await new Promise<void>(resolve => signal.addEventListener('abort', () => resolve(), { once: true }));
+      return { inputTokens: 33, outputTokens: 11 };
+    });
+    const input = { projectId: f.scope.projectId, sourceConversationId: f.scope.sourceId,
+      requestId: crypto.randomUUID(), text: '聊聊这个数字' };
+    const topic = await f.service.sendConversation('cloud-teacher', input);
+    const scope = { agentId: 'cloud-teacher', projectId: '', sourceId: 'project' };
+    await f.service.cancel(scope, topic.id, input.requestId);
+    await vi.waitFor(async () => expect((await f.service.conversation('cloud-teacher')).topic?.requests[0].status).toBe('cancelled'));
+    const cancelled = (await f.service.conversation('cloud-teacher')).topic!.requests[0];
+    expect(cancelled).toMatchObject({ id: input.requestId, projectId: input.projectId,
+      sourceConversationId: input.sourceConversationId, teacherVersion: 9, presentation: 'reply-v1',
+      status: 'cancelled', response: '', unparsedResponse: raw, usage: { inputTokens: 33, outputTokens: 11 } });
+    await f.service.sendConversation('cloud-teacher', input);
+    expect(f.run).toHaveBeenCalledOnce();
+    const restarted = await f.restart();
+    expect((await restarted.conversation('cloud-teacher')).topic!.requests[0]).toEqual(cancelled);
+  });
+
+  it.each(['suggestions', 'reply'] as const)('parses only final %s JSON after the real local runner reads a project file', async (format) => {
     const f = await fixture({
       liveModel: true, modelInputLimit: 8000,
       modelSystemPrompt: '帮助学生理解设计，结合实际进展给出建议。'.repeat(45),
@@ -1313,7 +1436,7 @@ describe('structured teacher service integration', () => {
       const topic = await f.service.create(scope);
       await f.service.send(scope, topic.id, {
         requestId: crypto.randomUUID(), text: '一起看看计数器。', sourceConversationId: f.scope.sourceId,
-        ...(format === 'suggestions' ? { intent: 'suggestions' as const } : { presentation: 'discussion-v1' as const }),
+        ...(format === 'suggestions' ? { intent: 'suggestions' as const } : {}),
       });
       await vi.waitFor(async () => expect((await f.service.read(scope, topic.id)).requests[0].status).toBe('completed'));
       expect(fetch).toHaveBeenCalledTimes(2);
@@ -1326,7 +1449,8 @@ describe('structured teacher service integration', () => {
       } else {
         expect(saved.requests[0].response).toBe(final.reply);
         expect(saved.requests[0].discussionError).toBeUndefined();
-        expect(saved.discussion).toMatchObject({ status: 'offered', content: tool });
+        expect(saved.discussion).toBeUndefined();
+        expect(saved.requests[0].presentation).toBe('reply-v1');
       }
       expect(saved.requests[0].response).not.toContain(preamble);
     } finally {
@@ -1334,48 +1458,45 @@ describe('structured teacher service integration', () => {
     }
   });
 
-  it.each(['local', 'yuxi'])('%s buffers model JSON, offers once, locks updates, persists state, and never applies a cancelled update', async (runtime) => {
+  it.each(['local', 'yuxi'])('%s keeps legacy data passive while new replies, retries and cancellation work', async (runtime) => {
     const f = await fixture({ cloudTeacher: runtime === 'yuxi', mockCloud: runtime === 'yuxi' });
     const scope = { ...f.scope, sourceId: 'project', role: 'teacher' as const };
     const initial = await f.service.create(scope, undefined, undefined, runtime === 'yuxi' ? 9 : undefined);
-    const tool = { kind: 'ideas', title: '宠物游戏', items: [{ id: 'dog', text: '养只小狗', state: 'kept' }] };
-    f.replyWith(JSON.stringify({ reply: '我们可以先把想法放在一起。', quickReplies: [], tool }));
-    const send = (text: string, discussion?: { toolId: string; revision: number }) => f.service.send(scope, initial.id, {
-      requestId: crypto.randomUUID(), text, presentation: 'discussion-v1', sourceConversationId: f.scope.sourceId, discussion,
-    });
-    const pending = await send('想养只小狗');
-    expect(runtime === 'yuxi' ? f.prepareCloud : f.prepareModel).toHaveBeenCalledOnce();
-    expect(runtime === 'yuxi' ? f.prepareModel : f.prepareCloud).not.toHaveBeenCalled();
-    const modelMessages = f.run.mock.calls[0][0] as Array<{ role: string; content: string }>;
-    expect(modelMessages[0].content).not.toContain(TEACHER_BEHAVIOR_PROMPT);
-    expect(modelMessages.some(message => message.role === 'system' && message.content.includes('本轮界面协议'))).toBe(true);
-    expect(pending.requests[0].response).toBe('');
-    expect(pending.discussion).toBeUndefined();
+    const legacy = { id: 'old', revision: 4, status: 'active', content: { kind: 'ideas', title: 'legacy-state-sentinel' } };
+    const directory = path.join(f.created.project.path, '.makelore/teacher-conversations', initial.accountId, 'project');
+    const archived = { ...initial, discussion: legacy };
+    await new TeacherTopicStore(directory).save(archived);
+    const service = await f.restart();
+    const input = { requestId: crypto.randomUUID(), text: '接着聊数字怎么变', sourceConversationId: f.scope.sourceId };
+    const quickReplies = ['【想试试】先增加一个数字', '【还不确定】数字什么时候改变'];
+    f.replyWith(JSON.stringify({ reply: '我们看看数字改变的时机。', quickReplies, tool: { kind: 'flow', title: 'discarded-output-sentinel' } }));
+    const pending = await service.send(scope, initial.id, input);
+    expect(pending.requests[0]).toMatchObject({ response: '', presentation: 'reply-v1' });
+    expect(pending.discussion).toEqual(legacy);
+    // Old cached send fields are ignored and cannot cause a duplicate request or change a component.
+    const staleInput = { ...input, presentation: 'discussion-v1', discussion: { toolId: 'old', revision: -1 } };
+    await service.send(scope, initial.id, staleInput);
+    expect(f.run).toHaveBeenCalledOnce();
+    const messages = f.run.mock.calls[0][0];
+    expect(messages).toContainEqual({ role: 'system', content: teacherReplyInstructions() });
+    expect(JSON.stringify(messages)).not.toContain('legacy-state-sentinel');
+    expect(messages[0].content).not.toContain(TEACHER_BEHAVIOR_PROMPT);
     f.finish();
-    await vi.waitFor(async () => expect((await f.service.read(scope, initial.id)).requests[0].status).toBe('completed'));
-    const offered = await f.service.read(scope, initial.id);
-    expect(offered.discussion?.status).toBe('offered');
-    expect(offered.requests[0].response).toBe('我们可以先把想法放在一起。');
-    const active = await f.service.updateDiscussion(scope, initial.id, { toolId: offered.discussion!.id, revision: 1, action: 'enter' });
-    const context = { toolId: active.discussion!.id, revision: 2 };
-    f.replyWith(JSON.stringify({ reply: '把花园也放进来了。', tool: { ...tool, title: '小狗和花园' } }));
-    const running = await send('还想种花', context);
-    expect(running.discussion?.content.title).toBe('宠物游戏');
-    await expect(f.service.updateDiscussion(scope, initial.id, { ...context, action: 'finish' })).rejects.toMatchObject({ code: 'teacher_topic_busy' });
-    await f.service.cancel(scope, initial.id, running.requests.at(-1)!.id);
-    await vi.waitFor(async () => expect((await f.service.read(scope, initial.id)).requests.at(-1)?.status).toBe('cancelled'));
-    expect((await f.service.read(scope, initial.id)).discussion?.content.title).toBe('宠物游戏');
-    await send('再把花园加进来', context);
-    f.finish();
-    await vi.waitFor(async () => expect((await f.service.read(scope, initial.id)).requests.at(-1)?.status).toBe('completed'));
-    const completed = await f.service.read(scope, initial.id);
-    expect(completed.discussion?.content.title).toBe('小狗和花园');
-    expect(completed.discussion?.revision).toBe(3);
-    expect(completed.requests[0].discussionSnapshot?.title).toBe('宠物游戏');
-    await expect(send('旧版本', context)).rejects.toMatchObject({ code: 'teacher_discussion_changed' });
-    const restarted = await f.restart();
-    expect((await restarted.read(scope, initial.id)).discussion).toEqual(completed.discussion);
+    await vi.waitFor(async () => expect((await service.read(scope, initial.id)).requests[0].status).toBe('completed'));
+    const completed = await service.read(scope, initial.id);
+    expect(completed.discussion).toEqual(legacy);
+    expect(completed.requests[0]).toMatchObject({ response: '我们看看数字改变的时机。', suggestedQuestions: quickReplies });
+    expect(completed.requests[0]).not.toHaveProperty('discussionSnapshot');
+    const next = { ...input, requestId: crypto.randomUUID(), text: quickReplies[0] };
+    await service.send(scope, initial.id, next);
+    await service.cancel(scope, initial.id, next.requestId);
+    await vi.waitFor(async () => expect((await service.read(scope, initial.id)).requests[1].status).toBe('cancelled'));
+    expect((await service.read(scope, initial.id)).discussion).toEqual(legacy);
+    const disk = await new TeacherTopicStore(directory).read(initial.id);
+    expect(disk.discussion).toEqual(legacy);
+    expect(disk.requests[0].suggestedQuestions).toEqual(quickReplies);
   });
+
 });
 
 
@@ -1387,7 +1508,7 @@ describe('project consultations with selected cloud teachers', () => {
     const raw = '{"reply":"这段正文完整。","tool":{"privateDiagnostic":"only-in-original"';
     f.replyWith(raw);
     await f.service.send(scope, selected.id, {
-      requestId: crypto.randomUUID(), text: '看看项目', presentation: 'discussion-v1', sourceConversationId: f.scope.sourceId,
+      requestId: crypto.randomUUID(), text: '看看项目', sourceConversationId: f.scope.sourceId,
     });
     f.finish();
     await vi.waitFor(async () => expect((await f.service.read(scope, selected.id)).requests[0].status).toBe('completed'));
@@ -1415,7 +1536,7 @@ describe('project consultations with selected cloud teachers', () => {
       expect(f.prepareCloud.mock.calls[0][1].version).toBe(9);
       expect(f.prepareModel).not.toHaveBeenCalled();
     } else expect(f.prepareModel).toHaveBeenCalledWith(expect.anything(), topic.definition,
-      expect.objectContaining({ projectPath: f.created.project.path }), { finalOnly: false });
+      expect.objectContaining({ projectPath: f.created.project.path }), { finalOnly: true });
     f.finish();
     await vi.waitFor(async () => expect((await f.service.read(scope, topic.id)).requests[0].status).toBe('completed'));
   });
diff --git a/tests/unit/teacher-conversation.test.ts b/tests/unit/teacher-conversation.test.ts
index d4ba8f9b..6b5a25ee 100644
--- a/tests/unit/teacher-conversation.test.ts
+++ b/tests/unit/teacher-conversation.test.ts
@@ -91,6 +91,68 @@ describe('continuous conversation persistence', () => {
     await other.importProject(project);
     expect(await other.exists()).toBe(false);
   });
+  it('imports reply history and its execution identity without reviving archived components', async () => {
+    const dir = await root(), project = { id: randomUUID(), path: path.join(dir, 'project'), name: '旧项目' };
+    const sourceId = randomUUID();
+    const archived = { obsoleteComponent: 'never-send-this-to-model', broken: ['not', 'a', 'component'] };
+    const oldStore = new TeacherTopicStore(path.join(project.path, '.makelore', 'teacher-conversations', 'account', sourceId));
+    const request: TeacherRequest = { ...turn(1), sourceConversationId: sourceId,
+      presentation: 'discussion-v1', discussionContext: archived, discussionSnapshot: archived,
+      discussionError: 'historical parser error', cloudRequestId: 'old-cloud-request',
+      response: '保留的正文', suggestedQuestions: ['继续聊这个想法'] };
+    const old: TeacherTopic = { schemaVersion: 1, revision: 1, accountId: 'account', id: randomUUID(),
+      projectId: project.id, sourceConversationId: sourceId, definition, version: 7,
+      createdAt: 'now', updatedAt: 'now', requests: [request], discussion: archived };
+    await oldStore.save(old);
+    const file = path.join(oldStore.directory, old.id + '.json'), before = await readFile(file, 'utf8');
+    const target = path.join(dir, 'new');
+    const store = new TeacherConversationStore(target, 'account', 'agent-a');
+    await store.importProject(project);
+    const resumed = new TeacherConversationStore(target, 'account', 'agent-a');
+    await resumed.importProject(project);
+    const topic = await resumed.read();
+    expect(topic.requests).toHaveLength(1);
+    expect(topic.requests[0]).toMatchObject({
+      origin: { projectId: project.id, topicId: old.id, requestId: request.id },
+      projectId: project.id, projectName: project.name, sourceConversationId: sourceId,
+      teacherVersion: 7, runtimeThreadId: old.id, cloudRequestId: 'old-cloud-request',
+      response: '保留的正文', suggestedQuestions: ['继续聊这个想法'],
+      discussionContext: archived, discussionSnapshot: archived, discussionError: 'historical parser error',
+    });
+    expect(topic.conversation).not.toHaveProperty('discussions');
+    expect(topic).not.toHaveProperty('discussion');
+    const manifest = JSON.parse(await readFile(path.join(target, 'conversation.json'), 'utf8'));
+    expect(manifest).not.toHaveProperty('importedDiscussions');
+    expect(JSON.stringify((await resumed.history()).messages)).not.toContain(archived.obsoleteComponent);
+    const history = await resumed.history();
+    expect((await history.read(`teacher:${topic.requests[0].id}:assistant`))?.text)
+      .toBe('保留的正文\n\n可以接着聊的问题：\n- 继续聊这个想法');
+    expect(await readFile(file, 'utf8')).toBe(before);
+  });
+  it('preserves existing continuous-chat component archives opaquely across recovery and writes', async () => {
+    const dir = await root();
+    const store = new TeacherConversationStore(dir, 'account', 'agent-a');
+    const topic = await store.ensure(definition, 1);
+    expect(topic.conversation).not.toHaveProperty('discussions');
+    const manifestPath = path.join(dir, 'conversation.json');
+    const manifest = JSON.parse(await readFile(manifestPath, 'utf8'));
+    const archives = { project: { malformedLegacyState: true, active: ['opaque', 'archive'] } };
+    const imported = { project: { legacyMarker: true } };
+    manifest.topic.conversation.discussions = archives;
+    manifest.importedDiscussions = imported;
+    await atomicWriteJson(manifestPath, manifest);
+    const pending = { ...turn(1), status: 'running' as const, discussionSnapshot: { malformed: true } };
+    await atomicWriteJson(path.join(dir, 'turns', pending.id + '.json'), pending);
+    const resumed = new TeacherConversationStore(dir, 'account', 'agent-a');
+    const restored = await resumed.read();
+    expect(restored.requests[0]).toMatchObject({ status: 'interrupted', discussionSnapshot: { malformed: true } });
+    restored.requests.push(turn(2));
+    await resumed.save(restored, restored.requests[1].id);
+    const saved = JSON.parse(await readFile(manifestPath, 'utf8'));
+    expect(saved.topic.conversation.discussions).toEqual(archives);
+    expect(saved.importedDiscussions).toEqual(imported);
+    expect((await new TeacherConversationStore(dir, 'account', 'agent-a').page()).requests).toHaveLength(2);
+  });
   it('recovers an import index failure before retrying in the same process', async () => {
     const dir = await root(), project = { id: randomUUID(), path: path.join(dir, 'project'), name: '旧项目' };
     const oldStore = new TeacherTopicStore(path.join(project.path, '.makelore', 'teacher-conversations', 'account', 'project'));
diff --git a/tests/unit/teacher-discussion-state.test.ts b/tests/unit/teacher-discussion-state.test.ts
deleted file mode 100644
index ef529e5a..00000000
--- a/tests/unit/teacher-discussion-state.test.ts
+++ /dev/null
@@ -1,331 +0,0 @@
-// @vitest-environment node
-import { describe, expect, it } from 'vitest';
-import {
-  applyDiscussionReply,
-  discussionInstructions,
-  editDiscussion,
-  validateDiscussionContext,
-} from '../../electron/coding-teacher/discussion';
-import type {
-  TeacherDefinition,
-  TeacherDiscussionAction,
-  TeacherDiscussionContext,
-  TeacherRequest,
-  TeacherTopic,
-} from '../../shared/coding-teacher';
-import type { TeacherDiscussion, TeacherDiscussionContent } from '../../shared/teacher-discussion';
-
-const definition: TeacherDefinition = {
-  schema_version: 1, teacher_id: 'coding-teacher', name: '老师', description: '', avatar_id: 'avatar-01',
-  welcome_message: '一起想一想', suggested_questions: [], system_prompt: '帮助孩子理解自己的想法。',
-  skills: [], model: { model_id: 'model', reasoning_choice: { mode: 'default' } },
-  limits: { max_input_tokens: 8000, max_output_tokens: 1500 },
-};
-const ideas: Extract<TeacherDiscussionContent, { kind: 'ideas' }> = {
-  kind: 'ideas', title: '小狗游戏', items: [
-    { id: 'dog', text: '养一只自己的小狗', state: 'kept' },
-    { id: 'breed', text: '柯基', parentId: 'dog', state: 'kept' },
-    { id: 'adventure', text: '带它去冒险', state: 'suggested' },
-  ], firstItemId: 'dog',
-};
-const structure: Extract<TeacherDiscussionContent, { kind: 'structure' }> = {
-  kind: 'structure', title: '这些想法的关系', nodes: [
-    { id: 'dog', label: '自己的小狗' },
-    { id: 'breed', label: '柯基', parentId: 'dog', relation: '品种' },
-  ],
-};
-const flow: Extract<TeacherDiscussionContent, { kind: 'flow' }> = {
-  kind: 'flow', title: '回家时的回应', nodes: [
-    { id: 'door', label: '打开门', kind: 'event' },
-    { id: 'awake', label: '醒着吗', kind: 'condition' },
-    { id: 'sleep', label: '继续睡', kind: 'outcome' },
-  ], edges: [{ id: 'start', from: 'door', to: 'awake' }, { id: 'no', from: 'awake', to: 'sleep', label: '睡着' }],
-};
-const comparison: Extract<TeacherDiscussionContent, { kind: 'comparison' }> = {
-  kind: 'comparison', title: '两种提示',
-  columns: [{ id: 'direct', label: '直接说' }, { id: 'hint', label: '给线索' }],
-  rows: [{ id: 'new', label: '新玩家', cells: [{ columnId: 'direct', text: '马上知道做什么' }, { columnId: 'hint', text: '还需要判断' }] }],
-};
-
-function topic(content?: TeacherDiscussionContent, status: TeacherDiscussion['status'] = 'active'): TeacherTopic {
-  return {
-    schemaVersion: 1, revision: 1, id: 'topic', accountId: 'account', projectId: 'project',
-    sourceConversationId: 'source', version: 1, definition, createdAt: 'now', updatedAt: 'now', requests: [],
-    ...(content ? { discussion: { id: 'tool-1', revision: 7, status, content: structuredClone(content) } } : {}),
-  };
-}
-
-function request(owner: TeacherTopic, context?: TeacherDiscussionContext): TeacherRequest {
-  const value: TeacherRequest = {
-    id: 'request-' + owner.requests.length, text: '我的补充', references: [], createdAt: 'now',
-    sourceCursor: { workerGeneration: 1, seq: 1 }, sourceCapturedAt: 'now', includedSourceMessageIds: [],
-    omittedMessages: 0, status: 'running', response: '', presentation: 'discussion-v1',
-    ...(context ? { discussionContext: structuredClone(context) } : {}),
-  };
-  owner.requests.push(value);
-  return value;
-}
-
-function context(owner: TeacherTopic, extra: Partial<TeacherDiscussionContext> = {}): TeacherDiscussionContext {
-  return { toolId: owner.discussion!.id, revision: owner.discussion!.revision, ...extra };
-}
-
-function act(owner: TeacherTopic, action: TeacherDiscussionAction['action'], itemId?: string): void {
-  editDiscussion(owner, { ...context(owner), action, ...(itemId ? { itemId } : {}) });
-}
-
-function reply(content?: TeacherDiscussionContent | null, text = '我把你的想法接上了。'): string {
-  return JSON.stringify({ reply: text, quickReplies: ['接着说'], ...(content === undefined ? {} : { tool: content }) });
-}
-
-describe('teacher discussion lifecycle', () => {
-  it('offers a new component without activating it and keeps an independent history snapshot', () => {
-    const owner = topic();
-    const turn = request(owner);
-    applyDiscussionReply(owner, turn, reply(ideas));
-    expect(owner.discussion).toMatchObject({ revision: 1, status: 'offered', content: ideas });
-    expect(owner.discussion?.id).toMatch(/^[0-9a-f-]{36}$/);
-    expect(turn.response).toBe('我把你的想法接上了。');
-    expect(turn.suggestedQuestions).toEqual(['接着说']);
-    expect(turn.discussionSnapshot).toEqual(ideas);
-    expect(turn.discussionSnapshot).not.toBe(owner.discussion?.content);
-    act(owner, 'enter');
-    act(owner, 'aside-idea', 'breed');
-    expect(turn.discussionSnapshot).toEqual(ideas);
-  });
-
-  it('enters, pauses, resumes, finishes and reopens the same component without losing content', () => {
-    const owner = topic(ideas, 'offered');
-    const original = structuredClone(owner.discussion!);
-    for (const [action, status] of [
-      ['enter', 'active'], ['pause', 'paused'], ['resume', 'active'], ['finish', 'finished'], ['resume', 'active'],
-    ] as const) {
-      const priorRevision = owner.discussion!.revision;
-      act(owner, action);
-      expect(owner.discussion).toEqual({ ...original, status, revision: priorRevision + 1 });
-    }
-    expect(owner.requests).toEqual([]);
-  });
-
-  it('allows a first offer to be declined while retaining it for later use', () => {
-    const owner = topic(flow, 'offered');
-    act(owner, 'pause');
-    expect(owner.discussion).toMatchObject({ id: 'tool-1', status: 'paused', content: flow });
-    act(owner, 'resume');
-    expect(owner.discussion).toMatchObject({ id: 'tool-1', status: 'active', content: flow });
-  });
-
-  it('keeps and shelves ideas explicitly and removes a shelved first-item marker', () => {
-    const owner = topic(ideas);
-    act(owner, 'keep-idea', 'adventure');
-    act(owner, 'first-idea', 'adventure');
-    expect(owner.discussion!.content).toMatchObject({ firstItemId: 'adventure' });
-    act(owner, 'aside-idea', 'adventure');
-    expect(owner.discussion!.content).not.toHaveProperty('firstItemId');
-    expect(owner.discussion!.content).toMatchObject({ items: [ideas.items[0], ideas.items[1], { ...ideas.items[2], state: 'aside' }] });
-    const before = structuredClone(owner.discussion);
-    expect(() => act(owner, 'first-idea', 'adventure')).toThrowError();
-    expect(owner.discussion).toEqual(before);
-  });
-
-  it.each(['enter', 'pause', 'finish', 'resume', 'keep-idea', 'aside-idea', 'first-idea', 'back-ideas'] as const)(
-    'rejects stale %s actions without mutating the current component', action => {
-      const owner = topic(ideas);
-      const before = structuredClone(owner);
-      expect(() => editDiscussion(owner, { toolId: 'tool-1', revision: 6, action, itemId: 'dog' }))
-        .toThrowError(expect.objectContaining({ code: 'teacher_discussion_changed', status: 409 }));
-      expect(owner).toEqual(before);
-    }
-  );
-
-  it('rejects actions against another tool or a missing item without a partial edit', () => {
-    const owner = topic(ideas);
-    const before = structuredClone(owner);
-    expect(() => editDiscussion(owner, { toolId: 'other', revision: 7, action: 'pause' })).toThrowError();
-    expect(() => act(owner, 'keep-idea', 'missing')).toThrowError();
-    expect(() => act(owner, 'back-ideas')).toThrowError();
-    expect(owner).toEqual(before);
-  });
-});
-
-describe('discussion request context and focus', () => {
-  it('permits ordinary chat without context even when a component exists', () => {
-    expect(validateDiscussionContext(topic(flow))).toBeUndefined();
-  });
-
-  it.each([
-    [ideas, 'breed'], [structure, 'breed'], [flow, 'sleep'], [comparison, 'new:hint'],
-  ] as const)('validates a stable focus id inside $0.kind', (content, focusId) => {
-    const owner = topic(content);
-    const expected = context(owner, { focusId });
-    expect(validateDiscussionContext(owner, { ...expected, clientOnly: 'drop me' } as TeacherDiscussionContext)).toEqual(expected);
-    expect(() => validateDiscussionContext(owner, context(owner, { focusId: 'missing' })))
-      .toThrowError(expect.objectContaining({ code: 'teacher_discussion_changed' }));
-  });
-
-  it.each(['offered', 'paused', 'finished'] as const)('rejects tool-maintenance context while %s', status => {
-    const owner = topic(flow, status);
-    expect(() => validateDiscussionContext(owner, context(owner))).toThrowError();
-  });
-
-  it('rejects stale revisions, foreign identities, invalid types and non-cell comparison focus', () => {
-    const owner = topic(comparison);
-    for (const input of [
-      context(owner, { revision: 6 }), context(owner, { toolId: 'other' }),
-      context(owner, { revision: 1.5 }), context(owner, { focusId: 'new' }),
-      { ...context(owner), focusId: 3 }, { ...context(owner), transition: 'flow' },
-    ]) {
-      expect(() => validateDiscussionContext(owner, input as TeacherDiscussionContext)).toThrowError();
-    }
-    const withFlow = topic(flow);
-    expect(() => validateDiscussionContext(withFlow, context(withFlow, { focusId: 'no' }))).toThrowError();
-  });
-
-  it('allows an explicit structure transition only from active ideas', () => {
-    const owner = topic(ideas);
-    const transition = context(owner, { transition: 'structure' });
-    expect(validateDiscussionContext(owner, transition)).toEqual(transition);
-    for (const content of [structure, flow, comparison]) {
-      const other = topic(content);
-      expect(() => validateDiscussionContext(other, context(other, { transition: 'structure' }))).toThrowError();
-    }
-  });
-});
-
-describe('applying completed teacher replies', () => {
-  it('updates the same active component and preserves all earlier turn snapshots', () => {
-    const owner = topic(flow);
-    const oldTurn = request(owner);
-    oldTurn.status = 'completed';
-    oldTurn.discussionSnapshot = structuredClone(flow);
-    const turn = request(owner, context(owner, { focusId: 'sleep' }));
-    const updated = structuredClone(flow);
-    updated.nodes[2].label = '动动耳朵，继续睡';
-    applyDiscussionReply(owner, turn, reply(updated));
-    expect(owner.discussion).toEqual({ id: 'tool-1', revision: 8, status: 'active', content: updated });
-    expect(turn.discussionSnapshot).toEqual(updated);
-    expect(oldTurn.discussionSnapshot).toEqual(flow);
-    expect(turn.discussionSnapshot).not.toBe(owner.discussion!.content);
-    updated.nodes[2].label = '改变调用方数据';
-    expect(turn.discussionSnapshot).toEqual(owner.discussion!.content);
-  });
-
-  it.each([ideas, structure, comparison])('rejects changing an active flow into $kind', content => {
-    const owner = topic(flow);
-    const before = structuredClone(owner.discussion);
-    const turn = request(owner, context(owner));
-    applyDiscussionReply(owner, turn, reply(content));
-    expect(owner.discussion).toEqual(before);
-    expect(turn.discussionError).toBeTruthy();
-    expect(turn.response).toBe('我把你的想法接上了。');
-    expect(turn.discussionSnapshot).toBeUndefined();
-  });
-
-  it('requires an explicit ideas-to-structure transition and preserves both directions for later discussion', () => {
-    const owner = topic(ideas);
-    const unconfirmed = request(owner, context(owner));
-    applyDiscussionReply(owner, unconfirmed, reply(structure));
-    expect(owner.discussion!.content).toEqual(ideas);
-    expect(unconfirmed.discussionError).toBeTruthy();
-    const transitionContext = validateDiscussionContext(owner, context(owner, { transition: 'structure' }));
-    const converted = request(owner, transitionContext);
-    applyDiscussionReply(owner, converted, reply(structure));
-    expect(owner.discussion).toMatchObject({ id: 'tool-1', revision: 8, status: 'active', content: structure, previousIdeas: ideas });
-    const expanded = structuredClone(structure);
-    expanded.nodes.push({ id: 'personality', label: '胆小但好奇', relation: '性格', parentId: 'dog' });
-    const supplement = request(owner, context(owner));
-    applyDiscussionReply(owner, supplement, reply(expanded));
-    act(owner, 'back-ideas');
-    expect(owner.discussion).toMatchObject({ id: 'tool-1', revision: 10, status: 'active', content: ideas, previousStructure: expanded });
-    const nextContext = context(owner, { transition: 'structure' });
-    const instructions = discussionInstructions(owner, nextContext);
-    expect(JSON.parse(instructions.split('\n').at(-1)!)).toMatchObject({ previousStructure: expanded });
-    act(owner, 'aside-idea', 'breed');
-    expect(owner.discussion!.previousIdeas).toEqual(ideas);
-    expect(owner.discussion!.previousStructure).toEqual(expanded);
-    expect(converted.discussionSnapshot).toEqual(structure);
-    expect(supplement.discussionSnapshot).toEqual(expanded);
-  });
-
-  it.each(['active', 'offered', 'paused', 'finished'] as const)('does not modify a %s component during ordinary chat', status => {
-    const owner = topic(flow, status);
-    const before = structuredClone(owner.discussion);
-    const turn = request(owner);
-    applyDiscussionReply(owner, turn, reply(ideas, '我们先聊这个想法。'));
-    expect(owner.discussion).toEqual(before);
-    expect(turn.response).toBe('我们先聊这个想法。');
-    expect(turn.discussionSnapshot).toBeUndefined();
-  });
-
-  it('ignores a late reply after revision/status changed while retaining its readable response', () => {
-    const owner = topic(flow);
-    const turn = request(owner, context(owner));
-    act(owner, 'pause');
-    const before = structuredClone(owner.discussion);
-    const update = structuredClone(flow);
-    update.nodes[2].label = '轻轻摇尾巴';
-    applyDiscussionReply(owner, turn, reply(update));
-    expect(owner.discussion).toEqual(before);
-    expect(turn.response).toBe('我把你的想法接上了。');
-    expect(turn.discussionSnapshot).toBeUndefined();
-    act(owner, 'resume');
-    const resumed = structuredClone(owner.discussion);
-    const stillStale = request(owner, turn.discussionContext);
-    applyDiscussionReply(owner, stillStale, reply(update));
-    expect(owner.discussion).toEqual(resumed);
-  });
-
-  it.each([null, undefined, flow])('keeps revision and snapshots unchanged when there is no component change: %s', content => {
-    const owner = topic(flow);
-    const before = structuredClone(owner.discussion);
-    const turn = request(owner, context(owner));
-    applyDiscussionReply(owner, turn, reply(content, '同一个动作，在不同情况下可以有不同反应。'));
-    expect(owner.discussion).toEqual(before);
-    expect(turn.response).toBe('同一个动作，在不同情况下可以有不同反应。');
-    expect(turn.discussionSnapshot).toBeUndefined();
-    expect(turn.discussionError).toBeUndefined();
-  });
-
-  it.each([
-    JSON.stringify({ reply: '你的补充收到啦。', tool: { ...flow, edges: [{ id: 'bad', from: 'door', to: 'missing' }] } }),
-    '{"reply":"你的补充收到啦。","tool":{"kind":"flow",',
-  ])('keeps the old component and historical snapshot when a model update is invalid', raw => {
-    const owner = topic(flow);
-    const oldTurn = request(owner);
-    oldTurn.status = 'completed';
-    oldTurn.discussionSnapshot = structuredClone(flow);
-    const before = structuredClone(owner.discussion);
-    const turn = request(owner, context(owner));
-    applyDiscussionReply(owner, turn, raw);
-    expect(owner.discussion).toEqual(before);
-    expect(oldTurn.discussionSnapshot).toEqual(flow);
-    expect(turn.response).toBe('你的补充收到啦。');
-    expect(turn.discussionError).toBeTruthy();
-    expect(turn.discussionSnapshot).toBeUndefined();
-  });
-
-  it('retains the original failed answer for inspection without changing the discussion', () => {
-    const owner = topic(flow, 'paused');
-    const before = structuredClone(owner.discussion);
-    const turn = request(owner);
-    const raw = '{"reply":"收到，先看看项目。","tool":{"kind":"flow",';
-    applyDiscussionReply(owner, turn, raw);
-    expect(turn.response).toBe('收到，先看看项目。');
-    expect(turn.unparsedResponse).toBe(raw);
-    expect(owner.discussion).toEqual(before);
-    const plainTurn = request(owner);
-    applyDiscussionReply(owner, plainTurn, '[项目说明](https://example.com)');
-    expect(plainTurn.discussionError).toBeUndefined();
-    expect(plainTurn.unparsedResponse).toBeUndefined();
-    expect(owner.discussion).toEqual(before);
-  });
-
-  it('keeps legacy text as a normal answer without creating a component', () => {
-    const owner = topic();
-    const turn = request(owner);
-    applyDiscussionReply(owner, turn, '先听听朋友玩的时候怎么想。');
-    expect(turn.response).toBe('先听听朋友玩的时候怎么想。');
-    expect(owner.discussion).toBeUndefined();
-    expect(turn.discussionSnapshot).toBeUndefined();
-  });
-});
diff --git a/tests/unit/teacher-discussion.test.ts b/tests/unit/teacher-discussion.test.ts
deleted file mode 100644
index defe1796..00000000
--- a/tests/unit/teacher-discussion.test.ts
+++ /dev/null
@@ -1,281 +0,0 @@
-// @vitest-environment node
-import { describe, expect, it, vi } from 'vitest';
-import {
-  parseTeacherDiscussionContent,
-  parseTeacherDiscussionReply,
-  type TeacherDiscussionContent,
-} from '../../shared/teacher-discussion';
-
-const ideas: TeacherDiscussionContent = {
-  kind: 'ideas', title: '我想做的小狗游戏',
-  items: [
-    { id: 'dog', text: '养一只小狗', state: 'kept' },
-    { id: 'breed', text: '柯基', parentId: 'dog', state: 'kept' },
-    { id: 'adventure', text: '一起冒险', state: 'suggested' },
-    { id: 'garden', text: '种菜', state: 'aside' },
-  ],
-  firstItemId: 'dog',
-};
-const structure: TeacherDiscussionContent = {
-  kind: 'structure', title: '这些想法有什么关系',
-  nodes: [
-    { id: 'dog', label: '我的小狗' },
-    { id: 'breed', label: '柯基', parentId: 'dog', relation: '品种' },
-    { id: 'personality', label: '胆小但好奇', parentId: 'dog', relation: '性格' },
-  ],
-};
-const flow: TeacherDiscussionContent = {
-  kind: 'flow', title: '回家时怎么欢迎我',
-  nodes: [
-    { id: 'door', label: '打开家门', kind: 'event' },
-    { id: 'awake', label: '小狗醒着吗？', kind: 'condition' },
-    { id: 'welcome', label: '跑过来欢迎', kind: 'outcome' },
-    { id: 'sleep', label: '动动耳朵，继续睡', kind: 'outcome' },
-  ],
-  edges: [
-    { id: 'start', from: 'door', to: 'awake' },
-    { id: 'yes', from: 'awake', to: 'welcome', label: '醒着' },
-    { id: 'no', from: 'awake', to: 'sleep', label: '睡着' },
-  ],
-};
-const comparison: TeacherDiscussionContent = {
-  kind: 'comparison', title: '没打中时怎样回应',
-  columns: [{ id: 'penalty', label: '直接扣分' }, { id: 'hint', label: '先给提示' }],
-  rows: [{
-    id: 'new', label: '第一次玩的人',
-    cells: [
-      { columnId: 'penalty', text: '可能不知道错在哪' },
-      { columnId: 'hint', text: '更容易知道如何调整' },
-    ],
-  }],
-};
-
-describe('teacher discussion content contract', () => {
-  it.each([ideas, structure, flow, comparison])('preserves Agent-provided $kind content in an independent safe projection', content => {
-    const parsed = parseTeacherDiscussionContent(content);
-    expect(parsed).toEqual(content);
-    expect(parsed).not.toBe(content);
-    expect(parseTeacherDiscussionContent(structuredClone(content))).toEqual(parsed);
-  });
-
-  it('preserves arbitrary structural relationships without inventing fixed character/place/item categories', () => {
-    expect(parseTeacherDiscussionContent({
-      kind: 'structure', title: '音乐盒', nodes: [
-        { id: 'melody', label: '自己录的旋律' },
-        { id: 'tempo', label: '慢慢加快', relation: '播放速度', parentId: 'melody' },
-      ],
-    })).toEqual({
-      kind: 'structure', title: '音乐盒', nodes: [
-        { id: 'melody', label: '自己录的旋律' },
-        { id: 'tempo', label: '慢慢加快', relation: '播放速度', parentId: 'melody' },
-      ],
-    });
-  });
-
-  it('accepts explicit game/retry loops while validating every edge target', () => {
-    const looping = {
-      ...flow,
-      edges: [...flow.edges, { id: 'retry', from: 'sleep', to: 'door', label: '明天再来' }],
-    };
-    expect(parseTeacherDiscussionContent(looping)).toEqual(looping);
-    expect(() => parseTeacherDiscussionContent({
-      ...looping, edges: [...looping.edges, { id: 'missing', from: 'welcome', to: 'outside' }],
-    })).toThrow(Error);
-  });
-
-  it('aligns comparison cells by their explicit column ids rather than their array position', () => {
-    const reversed = { ...comparison, rows: [{ ...comparison.rows[0], cells: [...comparison.rows[0].cells].reverse() }] };
-    expect(parseTeacherDiscussionContent(reversed)).toEqual(comparison);
-  });
-
-  it.each([
-    ['duplicate item', { ...ideas, items: [ideas.items[0], ideas.items[0]] }],
-    ['unknown parent', { ...structure, nodes: [{ id: 'child', label: '柯基', parentId: 'missing' }] }],
-    ['self parent', { ...structure, nodes: [{ id: 'dog', label: '小狗', parentId: 'dog' }] }],
-    ['parent cycle', { ...structure, nodes: [{ id: 'a', label: '甲', parentId: 'b' }, { id: 'b', label: '乙', parentId: 'a' }] }],
-    ['idea cycle', { ...ideas, items: [{ id: 'a', text: '甲', state: 'kept', parentId: 'b' }, { id: 'b', text: '乙', state: 'kept', parentId: 'a' }] }],
-    ['missing first item', { ...ideas, firstItemId: 'missing' }],
-    ['aside first item', { ...ideas, firstItemId: 'garden' }],
-    ['duplicate flow nodes', { ...flow, nodes: [...flow.nodes, flow.nodes[0]] }],
-    ['duplicate edge', { ...flow, edges: [flow.edges[0], flow.edges[0]] }],
-    ['unknown edge source', { ...flow, edges: [{ id: 'bad', from: 'missing', to: 'door' }] }],
-    ['unknown node kind', { ...flow, nodes: [{ id: 'a', label: '运行脚本', kind: 'execute' }], edges: [] }],
-    ['missing comparison cell', { ...comparison, rows: [{ ...comparison.rows[0], cells: comparison.rows[0].cells.slice(0, 1) }] }],
-    ['duplicate comparison cell', { ...comparison, rows: [{ ...comparison.rows[0], cells: [comparison.rows[0].cells[0], comparison.rows[0].cells[0]] }] }],
-    ['unknown comparison column', { ...comparison, rows: [{ ...comparison.rows[0], cells: [{ columnId: 'other', text: '其他' }, comparison.rows[0].cells[1]] }] }],
-    ['duplicate comparison columns', { ...comparison, columns: [comparison.columns[0], comparison.columns[0]] }],
-    ['duplicate comparison rows', { ...comparison, rows: [comparison.rows[0], comparison.rows[0]] }],
-  ])('rejects broken graph/table identity: %s', (_name, content) => {
-    expect(() => parseTeacherDiscussionContent(content)).toThrow(Error);
-  });
-
-  it.each([
-    ['empty title', { ...structure, title: '   ' }],
-    ['long title', { ...structure, title: '字'.repeat(121) }],
-    ['long label', { ...structure, nodes: [{ id: 'a', label: '字'.repeat(601) }] }],
-    ['unsafe id', { ...structure, nodes: [{ id: 'node a', label: '甲' }] }],
-    ['long id', { ...structure, nodes: [{ id: 'x'.repeat(65), label: '甲' }] }],
-    ['empty nodes', { ...structure, nodes: [] }],
-    ['too many nodes', { ...structure, nodes: Array.from({ length: 25 }, (_, i) => ({ id: 'n' + i, label: '节点' })) }],
-    ['too many edges', { ...flow, edges: Array.from({ length: 41 }, (_, i) => ({ id: 'e' + i, from: 'door', to: 'awake' })) }],
-    ['too many rows', { ...comparison, rows: Array.from({ length: 13 }, (_, i) => ({ ...comparison.rows[0], id: 'r' + i })) }],
-    ['one comparison column', { ...comparison, columns: [comparison.columns[0]] }],
-    ['unknown content kind', { kind: 'html', title: '网页', html: '<script>run()</script>' }],
-    ['missing field', { kind: 'ideas', title: '想法' }],
-  ])('rejects unbounded or unsupported content: %s', (_name, content) => {
-    expect(() => parseTeacherDiscussionContent(content)).toThrow(Error);
-  });
-
-  it('does not accept sparse arrays or invoke object accessors', () => {
-    expect(() => parseTeacherDiscussionContent({ ...structure, nodes: new Array(2) })).toThrow(Error);
-    const getter = vi.fn(() => '偷偷读取');
-    const content = { ...structure };
-    Object.defineProperty(content, 'title', { get: getter });
-    expect(() => parseTeacherDiscussionContent(content)).toThrow(Error);
-    expect(getter).not.toHaveBeenCalled();
-    const arrayGetter = vi.fn(() => structure.nodes[0]);
-    const nodes = [structure.nodes[0]];
-    Object.defineProperty(nodes, 0, { get: arrayGetter });
-    expect(() => parseTeacherDiscussionContent({ ...structure, nodes })).toThrow(Error);
-    expect(arrayGetter).not.toHaveBeenCalled();
-  });
-
-  it('drops extra display/execution fields and rejects dangerous object keys without polluting prototypes', () => {
-    const parsed = parseTeacherDiscussionContent({
-      ...structure, html: '<svg onload="execute()"/>', action: 'run',
-      nodes: structure.nodes.map(node => ({ ...node, style: { color: 'red' }, onClick: 'execute()' })),
-    });
-    expect(parsed).toEqual(structure);
-    const polluted = JSON.parse('{"kind":"structure","title":"图","nodes":[{"id":"a","label":"节点","__proto__":{"polluted":true}}]}');
-    expect(() => parseTeacherDiscussionContent(polluted)).toThrow(Error);
-    expect(Object.hasOwn(Object.prototype, 'polluted')).toBe(false);
-    expect(() => parseTeacherDiscussionContent(Object.assign(Object.create({ injected: true }), structure))).toThrow(Error);
-    expect(parseTeacherDiscussionContent(Object.assign(Object.create(null), structure))).toEqual(structure);
-  });
-});
-
-describe('teacher discussion model envelope', () => {
-  const envelope = { reply: '我把睡着的分支补好了。', quickReplies: ['还能怎样回应？'], tool: flow };
-
-  it.each([
-    (json: string) => json,
-    (json: string) => '```json\n' + json + '\n```',
-    (json: string) => '```JSON\r\n' + json + '\r\n```',
-    (json: string) => '```\n' + json + '\n```',
-    (json: string) => '```makelore-teacher-discussion\n' + json + '\n```',
-    (json: string) => '下面是整理。\n```json\n' + json + '\n```',
-    (json: string) => '下面是整理。\n' + json,
-  ])('accepts structured JSON transport without exposing its envelope', wrap => {
-    expect(parseTeacherDiscussionReply(wrap(JSON.stringify(envelope)))).toEqual(envelope);
-  });
-
-  it('keeps legacy prose and ordinary programming examples without selecting a tool from keywords', () => {
-    const prose = '我们可以用流程图看看。\n```js\nif (awake) welcome();\n```';
-    expect(parseTeacherDiscussionReply(prose)).toEqual({ reply: prose, quickReplies: [] });
-    expect(parseTeacherDiscussionReply('柯基、冒险和菜园都是好点子。'))
-      .toEqual({ reply: '柯基、冒险和菜园都是好点子。', quickReplies: [] });
-  });
-
-  it.each([
-    '[项目说明](https://example.com/readme)\n\n先看已有设计。',
-    '[1, 2, 3]',
-    '[{"reply":"普通数组示例"}]',
-    '```json\nnot valid json\n```',
-    '{"scripts":{"dev":"vite"},"name":"flybot"}',
-    '项目配置可以这样写：\n\n```json\n{"name":"flybot","scripts":{"dev":"vite"}}\n```',
-    '```json\n[{"id":1,"label":"入口"}]\n```',
-    '{"example":{"reply":"这是数据字段，不是回答协议"}}',
-    '```js\nconst example = {"reply":"代码示例"};\n```',
-  ])('preserves Markdown links and JSON examples as readable content: %s', raw => {
-    expect(parseTeacherDiscussionReply(raw)).toEqual({ reply: raw, quickReplies: [] });
-  });
-
-  it('distinguishes an absent tool from an explicit null and supports a tool-only envelope', () => {
-    expect(parseTeacherDiscussionReply('{"reply":"这轮只解释一下。"}'))
-      .toEqual({ reply: '这轮只解释一下。', quickReplies: [] });
-    expect(parseTeacherDiscussionReply('{"reply":"先聊聊。","tool":null}'))
-      .toEqual({ reply: '先聊聊。', quickReplies: [], tool: null });
-    expect(parseTeacherDiscussionReply(JSON.stringify({ reply: '', tool: ideas })))
-      .toEqual({ reply: '', quickReplies: [], tool: ideas });
-  });
-
-  it('preserves the valid reply but omits an invalid tool so the service can keep the current component', () => {
-    const parsed = parseTeacherDiscussionReply(JSON.stringify({
-      reply: '你的补充我收到了。', quickReplies: ['接着聊'],
-      tool: { ...flow, edges: [{ id: 'broken', from: 'door', to: 'missing' }] },
-    }));
-    expect(parsed.reply).toBe('你的补充我收到了。');
-    expect(parsed.quickReplies).toEqual(['接着聊']);
-    expect(parsed.tool).toBeUndefined();
-    expect(parsed.toolError).toBeTruthy();
-    expect(JSON.stringify(parsed)).not.toContain('broken');
-  });
-
-  it.each([
-    '{"reply":"说明已经完整。","tool":{"kind":"flow",',
-    '```json\n{"reply":"说明已经完整。","tool":',
-    '整理结果：\n{"reply":"说明已经完整。","tool":',
-    '{"quickReplies":[],"tool":{"nodes":[]},"reply":"说明已经完整。",',
-  ])('recovers a complete top-level reply from truncated JSON: %s', raw => {
-    const parsed = parseTeacherDiscussionReply(raw);
-    expect(parsed.reply).toBe('说明已经完整。');
-    expect(parsed.tool).toBeUndefined();
-    expect(parsed.toolError).toBeTruthy();
-  });
-
-  it.each([
-    '{"reply":"还没有说完',
-    '{"tool":{"reply":"不能拿嵌套结构充当正文"},',
-    '```json\n{"tool":{"secret":"raw-data"}}',
-    '```makelore-teacher-discussion\nnot valid json\n```',
-    '{"reply":13,"tool":{"kind":"html"}}',
-    '```json\n{"reply":"结束"}\n```\n```json\n{"reply":"第二个"}\n```',
-  ])('never exposes malformed JSON as the student reply: %s', raw => {
-    const parsed = parseTeacherDiscussionReply(raw);
-    expect(parsed.reply).not.toContain('{');
-    expect(parsed.reply).not.toContain('```');
-    expect(parsed.reply).not.toContain('raw-data');
-    expect(parsed.reply).not.toContain('不能拿嵌套结构');
-    expect(parsed.reply).not.toContain('不是合法 envelope');
-    expect(parsed.reply).toBeTruthy();
-    expect(parsed.tool).toBeUndefined();
-    expect(parsed.toolError).toBeTruthy();
-  });
-
-  it('recovers JSON-escaped reply strings without copying following malformed data', () => {
-    const reply = '你说：“先别叫醒它。”\n这个想法可以留下。';
-    const parsed = parseTeacherDiscussionReply('{"reply":' + JSON.stringify(reply) + ',"tool":{');
-    expect(parsed.reply).toBe(reply);
-    expect(parsed.toolError).toBeTruthy();
-  });
-
-  it('bounds transport by UTF-8 bytes and keeps only a recovered readable reply', () => {
-    const raw = JSON.stringify({ reply: '简短回复保留。', tool: flow, ignored: '中'.repeat(22000) });
-    expect(raw.length).toBeLessThan(64000);
-    expect(new TextEncoder().encode(raw).length).toBeGreaterThan(64000);
-    const parsed = parseTeacherDiscussionReply(raw);
-    expect(parsed.reply).toBe('简短回复保留。');
-    expect(parsed.tool).toBeUndefined();
-    expect(parsed.toolError).toBeTruthy();
-  });
-
-  it('bounds quick replies independently while retaining a valid component', () => {
-    expect(parseTeacherDiscussionReply(JSON.stringify({ reply: '想一想。', tool: structure, quickReplies: [' 再解释 ', '再解释'] })))
-      .toEqual({ reply: '想一想。', tool: structure, quickReplies: ['再解释'] });
-    for (const invalid of [['一', '二', '三', '四'], ['x'.repeat(121)], [13], ['']]) {
-      expect(parseTeacherDiscussionReply(JSON.stringify({ reply: '想一想。', tool: structure, quickReplies: invalid })))
-        .toEqual({ reply: '想一想。', tool: structure, quickReplies: [] });
-    }
-  });
-
-  it('bounds plain and structured reply text and does not propagate hostile envelope keys', () => {
-    expect(parseTeacherDiscussionReply('字'.repeat(12001)).reply).toHaveLength(12000);
-    const longReply = parseTeacherDiscussionReply(JSON.stringify({ reply: '字'.repeat(12001) }));
-    expect(longReply.reply.length).toBeLessThan(100);
-    expect(longReply.toolError).toBeTruthy();
-    const hostile = parseTeacherDiscussionReply('{"reply":"说明保留。","__proto__":{"polluted":true}}');
-    expect(hostile.reply).toBe('说明保留。');
-    expect(hostile.toolError).toBeTruthy();
-    expect(Object.hasOwn(Object.prototype, 'polluted')).toBe(false);
-  });
-});
diff --git a/tests/unit/teacher-guidance.test.ts b/tests/unit/teacher-guidance.test.ts
index 8b3e2b8e..7b1d0a73 100644
--- a/tests/unit/teacher-guidance.test.ts
+++ b/tests/unit/teacher-guidance.test.ts
@@ -1,14 +1,13 @@
 // @vitest-environment node
 import { describe, expect, it } from 'vitest';
 import examples from '../fixtures/teacher-guidance-examples.json';
-const TEACHER_BEHAVIOR_PROMPT = '你是麦洛的创作老师';
 import { compileTeacherContext, estimateTeacherTokens, teacherHistoryMessages } from '../../electron/coding-teacher/context';
-import { applyDiscussionReply, discussionInstructions, editDiscussion, validateDiscussionContext } from '../../electron/coding-teacher/discussion';
-import { parseTeacherDiscussionReply } from '../../shared/teacher-discussion';
-import type { TeacherDefinition, TeacherDiscussionAction, TeacherDiscussionContext, TeacherRequest, TeacherSourceContext, TeacherTopic } from '../../shared/coding-teacher';
+import { teacherReplyInstructions } from '../../electron/coding-teacher/reply';
+import { parseTeacherReply } from '../../shared/teacher-reply';
+import type { TeacherDefinition, TeacherRequest, TeacherSourceContext } from '../../shared/coding-teacher';
 
 const definition: TeacherDefinition = {
-  schema_version: 1, teacher_id: 'coding-teacher', name: '老师', description: '', avatar_id: 'avatar-01',
+  schema_version: 1, teacher_id: 'published-agent', name: '老师', description: '', avatar_id: 'avatar-01',
   welcome_message: '一起想一想', suggested_questions: [], system_prompt: '运营发布的老师说明',
   skills: [{ id: 'extra', name: '补充', description: '', instructions_markdown: '启用的教学补充', enabled: true },
     { id: 'off', name: '停用', description: '', instructions_markdown: '不应加载的资料', enabled: false }],
@@ -19,74 +18,47 @@ const source: TeacherSourceContext = {
   messages: [{ id: 'source', role: 'user', text: '我想做自己的作品' }],
   cursor: { workerGeneration: 1, seq: 1 }, capturedAt: 'now',
 };
-function topic(): TeacherTopic {
-  return { id: 'topic', schemaVersion: 1, revision: 1, accountId: 'account', projectId: 'project',
-    sourceConversationId: 'source', version: 1, definition, createdAt: 'now', updatedAt: 'now', requests: [] };
-}
-function action(owner: TeacherTopic, value: TeacherDiscussionAction['action']) {
-  editDiscussion(owner, { toolId: owner.discussion!.id, revision: owner.discussion!.revision, action: value });
-}
-function turn(owner: TeacherTopic, text: string, response: unknown, extra: Partial<TeacherDiscussionContext> = {}) {
-  const context = owner.discussion?.status === 'active'
-    ? validateDiscussionContext(owner, { toolId: owner.discussion.id, revision: owner.discussion.revision, ...extra }) : undefined;
-  const compiled = compileTeacherContext(definition, source, owner.requests, text, [], undefined, 'question', discussionInstructions(owner, context));
-  expect(compiled.messages[0].content).not.toContain(TEACHER_BEHAVIOR_PROMPT);
-  expect(compiled.includedSourceMessageIds).toEqual(['source']);
-  expect(estimateTeacherTokens(compiled.messages)).toBeLessThanOrEqual(definition.limits.max_input_tokens);
-  const request: TeacherRequest = { id: `turn-${owner.requests.length}`, text, references: [], createdAt: 'now',
-    sourceCursor: source.cursor, sourceCapturedAt: 'now', includedSourceMessageIds: compiled.includedSourceMessageIds,
-    omittedMessages: compiled.omittedMessages, status: 'running', response: '', presentation: 'discussion-v1', discussionContext: context };
-  applyDiscussionReply(owner, request, JSON.stringify(response));
-  expect(request.discussionError).toBeUndefined();
-  request.status = 'completed';
-  owner.requests.push(request);
-  return request;
-}
 
-describe('teacher behavior wiring and per-request formats', () => {
-  it('does not duplicate the same teaching baseline when operations publishes it', () => {
-    const configured = { ...definition, system_prompt: `\n${TEACHER_BEHAVIOR_PROMPT}\n` };
+describe('published guidance and text reply wiring', () => {
+  it.each(['question', 'suggestions', 'guided-help', 'check-in'] as const)(
+    'preserves cloud persona and enabled skills for %s without adding a fixed identity or writing style', intent => {
+      const before = structuredClone(definition);
+      const instructions = intent === 'check-in' ? undefined : teacherReplyInstructions();
+      const compiled = compileTeacherContext(definition, source, [], '帮我想一想', [], undefined, intent, instructions);
+      const system = compiled.messages[0].content;
+      expect(system).toContain(definition.system_prompt);
+      expect(system).toContain('启用的教学补充');
+      expect(system).not.toContain('不应加载的资料');
+      expect(compiled.messages.map(message => message.content).join('\n'))
+        .not.toMatch(/你是麦洛的创作老师|Alice|最多120字|不超过400字|2–3|学生自己的口吻/);
+      expect(definition).toEqual(before);
+      expect(compiled.messages.at(-1)?.role).toBe(intent === 'check-in' ? 'system' : 'user');
+      if (instructions) expect(compiled.messages.at(-2)).toEqual({ role: 'system', content: instructions });
+      if (intent === 'suggestions' || intent === 'guided-help') {
+        expect(compiled.messages.at(-1)?.content).toContain('推荐一个具体切入点');
+      }
+    }
+  );
+
+  it('does not duplicate a persona that operations publishes', () => {
+    const persona = '运营发布的独特身份与前缀';
+    const configured = { ...definition, system_prompt: `\n${persona}\n` };
     const compiled = compileTeacherContext(configured, source, [], '继续聊', []);
-    expect(compiled.messages[0].content.split(TEACHER_BEHAVIOR_PROMPT)).toHaveLength(2);
-    expect(compiled.messages[0].content).toContain('启用的教学补充');
-    expect(configured.system_prompt).toBe(`\n${TEACHER_BEHAVIOR_PROMPT}\n`);
+    expect(compiled.messages[0].content.split(persona)).toHaveLength(2);
+    expect(configured.system_prompt).toBe(`\n${persona}\n`);
   });
 
-  it.each(['question', 'suggestions', 'guided-help', 'check-in'] as const)('preserves the published persona for %s without mutating the cloud definition', intent => {
-    const before = structuredClone(definition);
-    const compiled = compileTeacherContext(definition, source, [], '帮我想一想', [], undefined, intent);
-    const system = compiled.messages[0].content;
-    expect(system).not.toContain(TEACHER_BEHAVIOR_PROMPT);
-    expect(system).toContain(definition.system_prompt);
-    expect(system).toContain('启用的教学补充');
-    expect(system).not.toContain('不应加载的资料');
-    expect(definition).toEqual(before);
-    expect(compiled.messages.at(-1)?.role).toBe(intent === 'check-in' ? 'system' : 'user');
-    if (intent === 'suggestions') expect(compiled.messages.at(-1)?.content).toContain('{"intro":string,"questions":string[]}');
-    expect(compiled.messages.some(message => message.content.includes('本轮界面协议'))).toBe(false);
-  });
-
-  it('uses a server-defined friend persona with its own skills and the same project tools', () => {
-    const friend = { ...definition, teacher_id: 'published-friend', name: '朋友', system_prompt: '我是运营发布的朋友，只聊作品体验。' };
-    const compiled = compileTeacherContext(friend, source, [], '你觉得呢', [], undefined, 'question', undefined, true);
-    expect(compiled.messages[0].content).toContain(friend.system_prompt);
-    expect(compiled.messages[0].content).not.toContain(TEACHER_BEHAVIOR_PROMPT);
+  it('keeps the same configured skills and read-only project access for any published identity', () => {
+    const configured = { ...definition, teacher_id: 'published-friend', system_prompt: '运营发布的作品体验伙伴。' };
+    const instructions = teacherReplyInstructions();
+    const compiled = compileTeacherContext(configured, source, [], '你觉得呢', [], undefined, 'question', instructions, true);
+    expect(compiled.messages[0].content).toContain(configured.system_prompt);
     expect(compiled.messages[0].content).toContain('启用的教学补充');
     expect(compiled.messages[0].content).toContain('你可以通过只读工具');
-  });
-
-  it('keeps the structured guided-help format alongside project read access and teaching guidance', () => {
-    const instructions = discussionInstructions(topic());
-    const compiled = compileTeacherContext(definition, source, [], '我说不清', [], undefined, 'guided-help', instructions, true);
-    expect(compiled.messages[0].content).not.toContain(TEACHER_BEHAVIOR_PROMPT);
-    expect(compiled.messages[0].content).toContain('你可以通过只读工具');
-    expect(compiled.messages[0].content).not.toContain('没有项目读取工具');
     expect(compiled.messages.at(-2)).toEqual({ role: 'system', content: instructions });
-    expect(compiled.messages.at(-1)?.content).toContain('按本轮界面协议返回');
-    expect(compiled.messages.at(-1)?.content).not.toContain('不返回 JSON');
   });
 
-  it('budgets readable history without fabricating a student turn for check-ins or losing suggested questions', () => {
+  it('budgets readable history while retaining the latest answer and suggestions, without exposing archived tools or raw failures', () => {
     const saved: TeacherRequest = {
       id: 'check-in', intent: 'check-in', text: '内部主动触发', response: '刚才的作品有新进展。',
       references: [], createdAt: 'now', sourceCursor: source.cursor, sourceCapturedAt: 'now',
@@ -96,6 +68,8 @@ describe('teacher behavior wiring and per-request formats', () => {
       ...saved, id: 'latest', intent: 'suggestions', text: '一起聊什么？',
       response: '先理解玩家想做什么。' + '需要考虑的作品细节。'.repeat(1200),
       suggestedQuestions: ['怎样判断这个体验是否有趣？'],
+      presentation: 'discussion-v1', discussionSnapshot: { kind: 'ideas', title: '旧组件仅留档' },
+      unparsedResponse: '不应重新发送的原始损坏协议', replyParseError: '历史解析错误',
     }];
     const original = structuredClone(history);
     const readable = teacherHistoryMessages(history);
@@ -103,9 +77,9 @@ describe('teacher behavior wiring and per-request formats', () => {
       'teacher:check-in:assistant', 'teacher:latest:user', 'teacher:latest:assistant',
     ]);
     expect(readable.at(-1)?.text).toContain('怎样判断这个体验是否有趣？');
-    expect(readable.some(message => message.text.includes('内部主动触发'))).toBe(false);
+    expect(JSON.stringify(readable)).not.toMatch(/内部主动触发|旧组件仅留档|原始损坏协议/);
 
-    const instructions = discussionInstructions(topic());
+    const instructions = teacherReplyInstructions();
     const fixed = compileTeacherContext(definition, source, [], '接着刚才的问题聊', [], undefined, 'question', instructions, true);
     const budget = estimateTeacherTokens(fixed.messages) + 1200;
     const compiled = compileTeacherContext(definition, source, history, '接着刚才的问题聊', [], budget, 'question', instructions, true);
@@ -122,60 +96,12 @@ describe('teacher behavior wiring and per-request formats', () => {
   });
 });
 
-describe('representative teaching examples against the real discussion contract', () => {
+describe('historical reply compatibility examples', () => {
   const responses = [examples.pet, examples.pet.followup, examples.pet.structure, examples.pet.paused,
     examples.pet.finished, examples.garden, examples.garden.followup, examples.shooter, examples.cake];
-  it.each(responses)('parses the example: $response.reply', ({ response }) => {
-    const parsed = parseTeacherDiscussionReply(JSON.stringify(response));
-    expect(parsed.toolError).toBeUndefined();
-    expect(parsed.reply).toBe(response.reply);
-    expect(parsed.tool ?? null).toEqual(response.tool);
-    expect(parsed.quickReplies).toEqual(response.quickReplies);
-  });
-
-  it('continues the pet structure across discussion, pause, finish and return without accepting a teacher candidate', () => {
-    const owner = topic();
-    turn(owner, examples.pet.student, examples.pet.response);
-    expect(owner.discussion?.status).toBe('offered');
-    const identity = owner.discussion!.id;
-    action(owner, 'enter');
-    turn(owner, examples.pet.followup.student, examples.pet.followup.response, { focusId: 'dog' });
-    expect(owner.discussion?.content).toEqual(examples.pet.followup.response.tool);
-    turn(owner, examples.pet.structure.studentAction, examples.pet.structure.response, { transition: 'structure' });
-    expect(owner.discussion?.previousIdeas).toEqual(examples.pet.followup.response.tool);
-    expect(owner.discussion?.content).toEqual(examples.pet.structure.response.tool);
-    const structure = structuredClone(owner.discussion!.content);
-    action(owner, 'pause');
-    turn(owner, examples.pet.paused.student, examples.pet.paused.response);
-    expect(owner.discussion?.content).toEqual(structure);
-    action(owner, 'resume');
-    action(owner, 'finish');
-    turn(owner, examples.pet.finished.student, examples.pet.finished.response);
-    expect(owner.discussion).toMatchObject({ id: identity, status: 'finished', content: structure });
-    action(owner, 'resume');
-    action(owner, 'back-ideas');
-    expect(owner.discussion).toMatchObject({ id: identity, status: 'active', content: examples.pet.followup.response.tool });
-    expect(owner.discussion!.content).not.toHaveProperty('confirmed');
-  });
-
-  it('changes only the discussed garden outcome while retaining the condition, other outcome and edges', () => {
-    const owner = topic();
-    turn(owner, examples.garden.student, examples.garden.response);
-    action(owner, 'enter');
-    const before = structuredClone(owner.discussion!);
-    turn(owner, examples.garden.followup.student, examples.garden.followup.response, { focusId: 'wait' });
-    expect(owner.discussion?.id).toBe(before.id);
-    expect(owner.discussion?.content).toEqual(examples.garden.followup.response.tool);
-    expect(owner.requests[0].discussionSnapshot).toEqual(examples.garden.response.tool);
-  });
-
-  it('keeps a comparison as aligned discussion data and allows a creative project to stay in plain conversation', () => {
-    const compared = topic();
-    turn(compared, examples.shooter.student, examples.shooter.response);
-    expect(compared.discussion?.content).toEqual(examples.shooter.response.tool);
-    const plain = topic();
-    const request = turn(plain, examples.cake.student, examples.cake.response);
-    expect(plain.discussion).toBeUndefined();
-    expect(request.suggestedQuestions).toEqual(examples.cake.response.quickReplies);
+  it.each(responses)('retains text and suggestions while discarding historical component data: $response.reply', ({ response }) => {
+    expect(parseTeacherReply(JSON.stringify(response))).toEqual({
+      reply: response.reply, quickReplies: response.quickReplies,
+    });
   });
 });
diff --git a/tests/unit/teacher-reply-history.test.ts b/tests/unit/teacher-reply-history.test.ts
new file mode 100644
index 00000000..42f59047
--- /dev/null
+++ b/tests/unit/teacher-reply-history.test.ts
@@ -0,0 +1,208 @@
+// @vitest-environment node
+import { afterEach, describe, expect, it, vi } from 'vitest';
+import { mkdtemp, readFile, rm, stat, writeFile } from 'node:fs/promises';
+import { tmpdir } from 'node:os';
+import path from 'node:path';
+import { TeacherTopicStore } from '../../electron/coding-teacher/store';
+import { compileTeacherContext, teacherHistoryMessages } from '../../electron/coding-teacher/context';
+import { createTeacherReadTools } from '../../electron/coding-teacher/read-tools';
+import type { TeacherDefinition, TeacherRequest, TeacherSourceContext, TeacherTopic } from '../../shared/coding-teacher';
+
+const roots: string[] = [];
+afterEach(async () => {
+  for (const root of roots.splice(0)) await rm(root, { recursive: true, force: true });
+});
+
+const definition: TeacherDefinition = {
+  config_id: 'selected-agent', schema_version: 1, teacher_id: 'published-agent',
+  name: '当前智能体', description: '', avatar_id: 'avatar-01', welcome_message: '',
+  suggested_questions: [], system_prompt: '使用已发布配置中的职责。', skills: [],
+  model: { model_id: 'model', reasoning_choice: { mode: 'default' } },
+  limits: { max_input_tokens: 32000, max_output_tokens: 1500 },
+};
+const source: TeacherSourceContext = {
+  messages: [{ id: 'source-message', role: 'assistant', text: '玩家已经能走到门口。' }],
+  cursor: { workerGeneration: 1, seq: 3 }, capturedAt: '2026-09-28T01:00:00Z',
+};
+const marker = (field: string) => 'ARCHIVED_ONLY_' + field;
+const ideas = {
+  kind: 'ideas', title: marker('ideas'),
+  items: [{ id: 'door', text: marker('idea-text'), state: 'kept' }], firstItemId: 'door',
+};
+const structure = {
+  kind: 'structure', title: marker('structure'), nodes: [{ id: 'door', label: marker('structure-label') }],
+};
+const flow = {
+  kind: 'flow', title: marker('flow'),
+  nodes: [{ id: 'door', label: marker('flow-label'), kind: 'event' }], edges: [],
+};
+const comparison = {
+  kind: 'comparison', title: marker('comparison'),
+  columns: [{ id: 'a', label: marker('column-a') }, { id: 'b', label: marker('column-b') }],
+  rows: [{ id: 'first', label: marker('row'), cells: [
+    { columnId: 'a', text: marker('cell-a') }, { columnId: 'b', text: marker('cell-b') },
+  ] }],
+};
+const archivedCases = [
+  ...[ideas, structure, flow, comparison].map(content => ({
+    name: content.kind,
+    discussion: {
+      id: 'b8a278e5-a5ce-45fc-af92-d39d8fd48ebf', revision: 7, status: 'active',
+      content, previousIdeas: ideas, previousStructure: structure,
+    },
+    context: { toolId: 'b8a278e5-a5ce-45fc-af92-d39d8fd48ebf', revision: 7, focusId: 'door' },
+    snapshot: content,
+  })),
+  {
+    name: 'invalid legacy fields',
+    discussion: {
+      id: marker('invalid-id'), revision: -4, status: marker('invalid-status'),
+      content: { kind: marker('unknown-kind') },
+      previousIdeas: [marker('invalid-previousIdeas')], previousStructure: marker('invalid-previousStructure'),
+      unknownArchiveField: { retained: marker('unknown-field') },
+    },
+    context: { toolId: marker('context-id'), revision: 'invalid', transition: marker('context-transition') },
+    snapshot: { kind: 'flow', nodes: marker('invalid-snapshot') },
+  },
+  { name: 'legacy scalar', discussion: marker('scalar'), context: marker('scalar-context'), snapshot: 42 },
+  { name: 'legacy array', discussion: [marker('array')], context: [marker('array-context')], snapshot: [marker('array-snapshot')] },
+  { name: 'legacy null', discussion: null, context: null, snapshot: null },
+];
+
+function request(overrides: Partial<TeacherRequest> = {}): TeacherRequest {
+  return {
+    id: 'completed-turn', text: '进门后要让玩家看见什么？', references: [],
+    createdAt: source.capturedAt, sourceCursor: source.cursor, sourceCapturedAt: source.capturedAt,
+    includedSourceMessageIds: ['source-message'], omittedMessages: 0, status: 'completed',
+    response: '先看进门时的提示。\n\n```json\n{"kind":"flow","label":"普通代码示例"}\n```',
+    suggestedQuestions: ['→ 看看提示出现的时机', '↪ 我想先说说玩家会看到什么'],
+    presentation: 'discussion-v1', discussionError: marker('error'), unparsedResponse: marker('unparsed'),
+    cloudRequestId: 'cloud-history-request',
+    toolActivity: [{ id: 'read-1', name: 'read_project_file', status: 'completed' }],
+    ...overrides,
+  };
+}
+
+function topic(archive = archivedCases[0]): TeacherTopic {
+  return {
+    schemaVersion: 1, revision: 12, id: 'e6ba57d5-9dc0-49fb-a8cf-e911f9ea366b',
+    accountId: 'account', projectId: 'project', sourceConversationId: 'project', version: 31,
+    definition, createdAt: source.capturedAt, updatedAt: source.capturedAt,
+    discussion: structuredClone(archive.discussion),
+    requests: [request({
+      discussionContext: structuredClone(archive.context), discussionSnapshot: structuredClone(archive.snapshot),
+    })],
+  };
+}
+
+async function fixture(value: TeacherTopic) {
+  const root = await mkdtemp(path.join(tmpdir(), 'teacher-reply-history-'));
+  roots.push(root);
+  const file = path.join(root, value.id + '.json');
+  // Different formatting also detects an unnecessary atomic JSON rewrite.
+  const raw = JSON.stringify(value, null, 4) + '\n\n';
+  await writeFile(file, raw);
+  const before = await stat(file, { bigint: true });
+  const unchanged = async () => {
+    expect(await readFile(file, 'utf8')).toBe(raw);
+    const after = await stat(file, { bigint: true });
+    expect({ ino: after.ino, mtimeNs: after.mtimeNs }).toEqual({ ino: before.ino, mtimeNs: before.mtimeNs });
+  };
+  return { root, file, unchanged, store: new TeacherTopicStore(root) };
+}
+
+describe('passive teacher reply history compatibility', () => {
+  it.each(archivedCases)('keeps $name opaque through read, list and a later save', async archive => {
+    const original = topic(archive);
+    const f = await fixture(original);
+    const loaded = await f.store.read(original.id);
+    expect(loaded).toEqual(original);
+    expect(await new TeacherTopicStore(f.root).list()).toEqual({
+      items: [{ id: original.id, title: original.requests[0].text, updatedAt: original.updatedAt,
+        version: 31, teacherId: 'selected-agent' }],
+      lastSelectedTopicId: original.id,
+    });
+    await f.unchanged();
+
+    loaded.revision++;
+    loaded.requests.push(request({ id: 'new-turn', presentation: 'reply-v1',
+      discussionError: undefined, unparsedResponse: undefined }));
+    await f.store.save(loaded);
+    const saved = JSON.parse(await readFile(f.file, 'utf8'));
+    expect(saved).toEqual(JSON.parse(JSON.stringify({ ...original,
+      revision: original.revision + 1, requests: [...original.requests, loaded.requests[1]],
+    })));
+    expect(await new TeacherTopicStore(f.root).read(original.id)).toEqual(saved);
+  });
+
+  it.each(['preparing', 'running'] as const)('recovers %s without interpreting or discarding archived data', async status => {
+    const original = topic(archivedCases[4]);
+    original.requests.push(...(['failed', 'cancelled', 'interrupted', status] as const).map((value, index) =>
+      request({ ...original.requests[0], id: 'turn-' + index, status: value, error: 'existing error ' + index })));
+    const f = await fixture(original);
+    const expected = structuredClone(original);
+    expected.revision++;
+    expected.requests.at(-1)!.status = 'interrupted';
+    expected.requests.at(-1)!.error = '应用已重启，本次回复中断。';
+
+    const loaded = await f.store.read(original.id);
+    expect(loaded).toEqual({ ...expected, unsaved: false });
+    expect(JSON.parse(await readFile(f.file, 'utf8'))).toEqual(expected);
+    const recovered = await stat(f.file, { bigint: true });
+    const reloadedStore = new TeacherTopicStore(f.root);
+    expect(await reloadedStore.read(original.id)).toEqual(expected);
+    await reloadedStore.list();
+    const reread = await stat(f.file, { bigint: true });
+    expect({ ino: reread.ino, mtimeNs: reread.mtimeNs }).toEqual({ ino: recovered.ino, mtimeNs: recovered.mtimeNs });
+  });
+
+  it('projects completed prose and unchanged quick replies without leaking archived fields into model context', () => {
+    const original = topic(archivedCases[4]);
+    original.requests.push(request({ id: 'check-in', intent: 'check-in', text: marker('synthetic-check-in-question'),
+      response: '项目进展提醒正文。', suggestedQuestions: ['→ 继续这个角度'] }));
+    original.requests.push(...(['preparing', 'running', 'failed', 'cancelled', 'interrupted'] as const).map(status =>
+      request({ id: status, status, text: marker(status), response: marker(status + '-response') })));
+    const before = structuredClone(original);
+    const history = teacherHistoryMessages(original.requests);
+    expect(history.map(message => [message.id, message.role])).toEqual([
+      ['teacher:completed-turn:user', 'user'], ['teacher:completed-turn:assistant', 'assistant'],
+      ['teacher:check-in:assistant', 'assistant'],
+    ]);
+    expect(history[0].text).toBe(original.requests[0].text);
+    expect(history[1].text).toContain(original.requests[0].response);
+    for (const quickReply of original.requests[0].suggestedQuestions!) expect(history[1].text).toContain(quickReply);
+    expect(history[2].text).toContain('项目进展提醒正文。');
+    expect(history[2].text).toContain('→ 继续这个角度');
+    expect(JSON.stringify(history)).not.toContain('ARCHIVED_ONLY_');
+
+    const compiled = compileTeacherContext(definition, source, original.requests, '接着看这个角度', []);
+    const serialized = JSON.stringify(compiled.messages);
+    expect(serialized).not.toContain('ARCHIVED_ONLY_');
+    for (const message of history) expect(compiled.messages.some(item => item.content.includes(message.text))).toBe(true);
+    expect(original).toEqual(before);
+  });
+
+  it('exposes only the same readable history through conversation index and message reads', async () => {
+    const original = topic(archivedCases[4]);
+    const f = await fixture(original);
+    const loaded = await f.store.read(original.id);
+    const assertCurrent = vi.fn();
+    const tools = createTeacherReadTools({ projectPath: f.root, source, history: loaded.requests, assertCurrent });
+    const signal = new AbortController().signal;
+    const index = await tools.execute('read_conversation', '{}', signal);
+    expect(index).toContain('teacher:completed-turn:assistant');
+    expect(index).not.toContain('ARCHIVED_ONLY_');
+    for (const message of teacherHistoryMessages(loaded.requests)) {
+      const raw = await tools.execute('read_conversation', JSON.stringify({ message_id: message.id }), signal);
+      expect(JSON.parse(raw).text).toBe(message.text);
+      expect(raw).not.toContain('ARCHIVED_ONLY_');
+    }
+    const inaccessible = await tools.executeResult('read_conversation',
+      JSON.stringify({ message_id: 'discussion' }), signal);
+    expect(inaccessible.status).toBe('error');
+    expect(inaccessible.content).not.toContain('ARCHIVED_ONLY_');
+    expect(assertCurrent).toHaveBeenCalled();
+    expect(loaded).toEqual(original);
+    await f.unchanged();
+  });
+});
diff --git a/tests/unit/teacher-reply.test.ts b/tests/unit/teacher-reply.test.ts
new file mode 100644
index 00000000..d6bae637
--- /dev/null
+++ b/tests/unit/teacher-reply.test.ts
@@ -0,0 +1,204 @@
+// @vitest-environment node
+import { describe, expect, it } from 'vitest';
+import {
+  MAX_TEACHER_QUICK_REPLIES,
+  MAX_TEACHER_QUICK_REPLY_BYTES,
+  MAX_TEACHER_REPLY_BYTES,
+  parseTeacherReply,
+} from '../../shared/teacher-reply';
+import { applyTeacherReply, teacherReplyInstructions } from '../../electron/coding-teacher/reply';
+import type { TeacherRequest } from '../../shared/coding-teacher';
+
+describe('teacher text and suggestions transport', () => {
+  const envelope = { reply: '🍎 **先看看重力带来的变化。**', quickReplies: ['继续解释', '比较不同选择'] };
+
+  it.each([
+    (json: string) => json,
+    (json: string) => '```json\n' + json + '\n```',
+    (json: string) => '```JSON\r\n' + json + '\r\n```',
+    (json: string) => '```\n' + json + '\n```',
+    (json: string) => '~~~json\n' + json + '\n~~~',
+    (json: string) => '```makelore-teacher\n' + json + '\n```',
+    (json: string) => '```makelore-teacher-reply\n' + json + '\n```',
+    (json: string) => '```makelore-teacher-discussion\n' + json + '\n```',
+  ])('accepts current and historical envelope fences', wrap => {
+    expect(parseTeacherReply(wrap(JSON.stringify(envelope)))).toEqual(envelope);
+  });
+
+  it.each([
+    '[项目说明](https://example.com/readme)\n\n先看已有设计。',
+    '我们可以用流程图看看。\n```js\nif (awake) welcome();\n```',
+    '[1, 2, 3]',
+    '[{"reply":"普通数组示例"}]',
+    '```json\nnot valid json\n```',
+    '{"scripts":{"dev":"vite"},"name":"flybot"}',
+    '项目配置可以这样写：\n\n```json\n{"name":"flybot","scripts":{"dev":"vite"}}\n```',
+    '{"example":{"reply":"嵌套数据字段"}}',
+    '```js\nconst example = {"reply":"代码示例"};\n```',
+    '字段示例 `{"reply":"行内示例"}` 不属于传输协议。',
+    '``{"reply":"含反引号 ` 的示例"}``',
+    '这是问卷接口的 JSON 示例：\n```json\n{"questions":["喜欢什么颜色？"]}\n```',
+    '{"tool":"read_project_file","path":"src/main.ts"}',
+    '{"tool":{"name":"read_project_file","arguments":{"path":"src/main.ts"}}}',
+    '{"intro":"普通页面介绍"}',
+  ])('preserves ordinary Markdown and code examples verbatim: %s', raw => {
+    expect(parseTeacherReply(raw)).toEqual({ reply: raw, quickReplies: [] });
+  });
+
+  it('preserves natural prefixes and trailing prose around a reply envelope', () => {
+    const raw = '🧭 先观察现象。\n```json\n' + JSON.stringify(envelope) + '\n```\n\n再比较两种感受。';
+    expect(parseTeacherReply(raw)).toEqual({
+      reply: '🧭 先观察现象。\n\n' + envelope.reply + '\n\n再比较两种感受。',
+      quickReplies: envelope.quickReplies,
+    });
+    expect(parseTeacherReply('提示：' + JSON.stringify(envelope)).reply)
+      .toBe('提示：\n\n' + envelope.reply);
+  });
+
+  it('supports legacy intro/questions without enforcing writing style or old counts', () => {
+    const intro = '云端指定前缀：' + '完整解释。'.repeat(200);
+    const questions = ['我需要更多例子', '请给出完整方法。'.repeat(40), '自由写下想法', '继续'];
+    expect(parseTeacherReply(JSON.stringify({ intro, questions })))
+      .toEqual({ reply: intro, quickReplies: questions });
+    expect(parseTeacherReply(JSON.stringify({ intro: '随时继续。', questions: [] })))
+      .toEqual({ reply: '随时继续。', quickReplies: [] });
+    expect(parseTeacherReply(JSON.stringify({ intro: '一个入口。', questions: ['继续'] })))
+      .toEqual({ reply: '一个入口。', quickReplies: ['继续'] });
+  });
+
+  it('preserves long ordinary and structured replies without the old 12000 character truncation', () => {
+    const reply = '🍏 云端前缀\n\n' + '这是一段完整的详细解释。'.repeat(10000);
+    expect(parseTeacherReply(reply)).toEqual({ reply, quickReplies: [] });
+    expect(parseTeacherReply(JSON.stringify({ reply, quickReplies: [] })))
+      .toEqual({ reply, quickReplies: [] });
+  });
+
+  it.each([null, 13, '旧结构', { kind: 'unknown', broken: true }, { kind: 'flow', edges: [{ to: 'missing' }] }])(
+    'ignores any valid-JSON legacy tool value: %j', tool => {
+      expect(parseTeacherReply(JSON.stringify({ ...envelope, tool }))).toEqual(envelope);
+    }
+  );
+
+  it('projects only text fields, never execution metadata or hostile object keys', () => {
+    const parsed = parseTeacherReply('{"reply":"正文保留。","quickReplies":["继续"],"__proto__":{"polluted":true},"constructor":{"prototype":{"polluted":true}},"tool":{"kind":"html","html":"<script>run()</script>"}}');
+    expect(parsed).toEqual({ reply: '正文保留。', quickReplies: ['继续'] });
+    expect(Object.hasOwn(Object.prototype, 'polluted')).toBe(false);
+    expect(JSON.stringify(parsed)).not.toContain('script');
+  });
+
+  it.each([
+    '{"reply":"完整说明。","quickReplies":["继续","更多例子"],"tool":{"kind":"flow",',
+    '```json\n{"reply":"完整说明。","quickReplies":["继续","更多例子"],"tool":',
+    '{"quickReplies":["继续","更多例子"],"tool":{"nodes":[]},"reply":"完整说明。",',
+    '{"intro":"完整说明。","questions":["继续","更多例子"],"tool":[',
+  ])('recovers complete text and suggestions before truncated legacy data: %s', raw => {
+    expect(parseTeacherReply(raw)).toMatchObject({
+      reply: '完整说明。', quickReplies: ['继续', '更多例子'], parseError: expect.any(String),
+    });
+    expect(Object.keys(parseTeacherReply(raw)).sort()).toEqual(['parseError', 'quickReplies', 'reply']);
+  });
+
+  it('recovers JSON escaped text and keeps only complete suggestion arrays', () => {
+    const reply = '他说：“保留 \\ 反斜杠。”\n正文含有 {"tool": "只是文字"}。';
+    const parsed = parseTeacherReply('{"reply":' + JSON.stringify(reply) + ',"quickReplies":["还没有结束');
+    expect(parsed).toMatchObject({ reply, quickReplies: [], parseError: expect.any(String) });
+  });
+
+  it.each([
+    '{"reply":"不完整正文',
+    '{"tool":{"kind":"flow","reply":"nested-secret"},',
+    '{"tool":{"kind":"ideas","items":[]}}',
+    '```makelore-teacher-discussion\n{"tool":{"secret":"raw-data"}}',
+    '```makelore-teacher-discussion\ninvalid-envelope\n```',
+    '{"reply":13,"tool":{"kind":"html"}}',
+    '{reply:"不合法的协议",tool:{kind:"ideas"}}',
+  ])('does not expose malformed envelopes or component-only data: %s', raw => {
+    const parsed = parseTeacherReply(raw);
+    expect(parsed.parseError).toBeTruthy();
+    expect(parsed.reply).not.toMatch(/\{|```|nested-secret|raw-data|invalid-envelope/);
+    expect(parsed.reply).toBeTruthy();
+    expect(parsed.quickReplies).toEqual([]);
+  });
+
+  it('marks multiple envelopes or duplicate fields as ambiguous without showing legacy JSON', () => {
+    const parsed = parseTeacherReply(JSON.stringify(envelope) + '\n{"reply":"第二份","tool":{"kind":"ideas"}}');
+    expect(parsed).toMatchObject({ ...envelope, parseError: expect.any(String) });
+    expect(parsed.reply).not.toContain('tool');
+    expect(parseTeacherReply('{"reply":"第一份","reply":"第二份"}').parseError).toBeTruthy();
+  });
+
+  it.each([
+    '{"reply":"正文保留。"},"tool":{"kind":"ideas","items":[]}',
+    '{"reply":"正文保留。"}}',
+  ])('does not append malformed legacy envelope tails as prose: %s', raw => {
+    expect(parseTeacherReply(raw)).toMatchObject({
+      reply: '正文保留。', quickReplies: [], parseError: expect.any(String),
+    });
+  });
+
+  it('preserves a valid reply while reporting invalid suggestion types', () => {
+    for (const quickReplies of [null, {}, ['继续', 13], [''], [' ']]) {
+      expect(parseTeacherReply(JSON.stringify({ reply: '完整正文', quickReplies })))
+        .toMatchObject({ reply: '完整正文', quickReplies: [], parseError: expect.any(String) });
+    }
+  });
+
+  it('makes resource failures explicit instead of silently truncating content', () => {
+    const huge = '中'.repeat(Math.floor(MAX_TEACHER_REPLY_BYTES / 3) + 1);
+    expect(huge.length).toBeLessThan(MAX_TEACHER_REPLY_BYTES);
+    const parsed = parseTeacherReply(huge);
+    expect(parsed.parseError).toContain('数据大小');
+    expect(parsed.reply).not.toBe(huge.slice(0, 12000));
+    for (const quickReplies of [
+      Array.from({ length: MAX_TEACHER_QUICK_REPLIES + 1 }, () => '继续'),
+      ['字'.repeat(Math.floor(MAX_TEACHER_QUICK_REPLY_BYTES / 3) + 1)],
+    ]) {
+      expect(parseTeacherReply(JSON.stringify({ reply: '正文保留', quickReplies })))
+        .toMatchObject({ reply: '正文保留', quickReplies: [], parseError: expect.stringContaining('数据大小') });
+    }
+  });
+
+  it('handles deeply nested ignored legacy data without recursion', () => {
+    const raw = '{"reply":"正文保留。","tool":' + '['.repeat(12000) + '0' + ']'.repeat(12000) + '}';
+    expect(parseTeacherReply(raw)).toEqual({ reply: '正文保留。', quickReplies: [] });
+  });
+});
+
+describe('Main reply application', () => {
+  function request(): TeacherRequest {
+    return {
+      id: 'request', presentation: 'reply-v1', text: '继续', references: [],
+      createdAt: 'now', sourceCursor: { workerGeneration: 1, seq: 1 }, sourceCapturedAt: 'now',
+      includedSourceMessageIds: [], omittedMessages: 0, status: 'running', response: '',
+      discussionSnapshot: { kind: 'ideas', title: '历史记录' },
+    };
+  }
+
+  it('stores parsing errors and exact raw data while leaving archived components untouched', () => {
+    const current = request();
+    const raw = '{"reply":"保留完整正文。","quickReplies":["继续"],"tool":';
+    applyTeacherReply(current, raw);
+    expect(current.response).toBe('保留完整正文。');
+    expect(current.suggestedQuestions).toEqual(['继续']);
+    expect(current.replyParseError).toBeTruthy();
+    expect(current.unparsedResponse).toBe(raw);
+    expect(current.discussionSnapshot).toEqual({ kind: 'ideas', title: '历史记录' });
+  });
+
+  it('clears a previous parsing failure after a valid reply without retaining tool data', () => {
+    const current = request();
+    applyTeacherReply(current, '{"reply":');
+    applyTeacherReply(current, '{"reply":"完成。","quickReplies":[],"tool":{"kind":"ideas"}}');
+    expect(current.response).toBe('完成。');
+    expect(current.replyParseError).toBeUndefined();
+    expect(current.unparsedResponse).toBeUndefined();
+    expect(current.discussionSnapshot).toEqual({ kind: 'ideas', title: '历史记录' });
+  });
+
+  it('limits instructions to the text/suggestions shape and defers writing choices to cloud configuration', () => {
+    const instructions = teacherReplyInstructions();
+    expect(instructions).toContain('{"reply":string,"quickReplies":string[]}');
+    expect(instructions).toContain('云端配置');
+    expect(instructions).not.toMatch(/Alice|120|400|2–3|学生口吻|kind|tool|想法板|流程图/);
+  });
+});
diff --git a/tests/unit/teacher-retired-discussion-route.test.ts b/tests/unit/teacher-retired-discussion-route.test.ts
new file mode 100644
index 00000000..ba964323
--- /dev/null
+++ b/tests/unit/teacher-retired-discussion-route.test.ts
@@ -0,0 +1,31 @@
+// @vitest-environment node
+import { describe, expect, it, vi } from 'vitest';
+import type { IncomingMessage, ServerResponse } from 'node:http';
+import { Readable } from 'node:stream';
+import type { HostApiContext } from '../../electron/api/context';
+import { handleCodingTeacherRoutes } from '../../electron/api/routes/coding-teacher';
+
+describe('retired discussion mutation routes', () => {
+  it.each([
+    '/api/coding/projects/project/conversations/source/teacher-topics/topic/discussion',
+    '/api/coding/teacher-preview/topics/topic/discussion',
+    '/api/coding/projects/project/agent-topics/topic/discussion',
+    '/api/coding/projects/project/teacher-topics/topic/discussion',
+    '/api/coding/projects/project/friend-topics/topic/discussion',
+    '/api/coding/agent-conversations/agent/discussion',
+  ])('does not dispatch a stale client action at %s', async pathname => {
+    const req = Object.assign(Readable.from([JSON.stringify({
+      toolId: 'archived-tool', revision: 7, action: 'resume',
+    })]), { method: 'POST' }) as IncomingMessage;
+    const res = { setHeader: vi.fn(), end: vi.fn() };
+    const updateDiscussion = vi.fn().mockResolvedValue({});
+    const conversation = vi.fn();
+    const ctx = { codingProducts: { teacher: { updateDiscussion, conversation } } } as unknown as HostApiContext;
+
+    expect(await handleCodingTeacherRoutes(req, res as unknown as ServerResponse,
+      new URL(pathname, 'http://localhost'), ctx)).toBe(false);
+    expect(updateDiscussion).not.toHaveBeenCalled();
+    expect(conversation).not.toHaveBeenCalled();
+    expect(res.end).not.toHaveBeenCalled();
+  });
+});