Task: Show a local empty state without invoking the Agent when no work exists

Identity

Task ID: 20260929-empty-work-preview-9c3f72a1
Mode: Feature
Branch: codex/20260929-empty-work-preview-9c3f72a1-empty-work-preview
Worktree: /Users/chillishark/Makelore 麦洛/.codex-worktrees/makelore/20260929-empty-work-preview-9c3f72a1
Base commit: 077184aaba
Owner: codex
Status: Ready for Integration

Show a deterministic local empty state when the project has no work to preview, before creating an operation conversation or sending OPEN_WORK_PROMPT. Preserve preview restoration, existing-work startup, busy waiting and failure recovery.

User approved implementation after read-only evaluation. Empty copy: “还没有作品，快和老师聊聊吧”. No Yuxi quick-prompt implementation, cloud publication, model calls, app replacement or main-branch merge is included in this change.
Concurrent and Planning Gates passed. App worktree tool reported the parent workspace is not a Git repository; used the skill isolation fallback at main 077184a. Matching task reservation/worktree owner verified.
Read AGENTS, entry/memory/planning gate, active task, positioning, integrated state, decisions, architecture, domain, success criteria, evidence and relevant scaffold/teacher decisions. Peer scopes reviewed; teacher-help-label/release and child-language-skill are active (the latter scope undefined), with no concrete dependency. Completed teacher presence owns historical preview behavior; this user's explicit request authorizes the no-work exception. Canonical memory partly predates current README/code and remains read-only.
Plan: add a bounded conservative Main-owned work-presence check; return an empty result before conversation creation/submission; render exact local copy; verify real filesystem absence/asset-only and existing-work paths, UI and existing preview lifecycle; update README and this record.

Implemented a Main-owned bounded names/types scan before any conversation creation or internal prompt submission. New/metadata/knowledge/material-only projects return empty; unknown formats, unreadable directories, links and scan bounds retain the existing startup path. Known reachable pages still bypass the scan. Presence is rechecked after reopening and is not cached as a terminal attempt.
Added the empty preview result and exact local copy “还没有作品，快和老师聊聊吧”. No model call, added chat message, recovery button, technical error or background polling for the empty state; retained return-to-operation-chat action. A later host show event rechecks the same request so newly opened work appears without tab/focus changes.
Existing work startup, busy-project waiting, known-page restoration, failure recovery and uncertain-request deduplication are preserved. README synchronized. No cloud configuration, installed app, live project data or main branch changed.

corepack pnpm verified at the repository-pinned 10.33.4; reused local dependency tree through an ignored node_modules symlink.
125 related unit tests passed across work presence/preview, browser routes/panel, hook, coding chat and conversation timeline. Independent review found the empty-to-host-show edge case; added a failing regression, fixed it, and reran all 26 panel/hook tests successfully (one additional unique regression).
10 isolated headless Chrome layout/E2E cases passed, including exact empty copy, no failure/retry UI, no teacher auto-open, and no checks over 60 seconds. Inspected the generated empty-state screenshot. No real Electron focus change or paid model requests.
Final standard pnpm run typecheck, scoped ESLint, pnpm run build:vite and git diff --check passed. Extended Main tsc --project tsconfig.node.json --composite false --incremental false --noEmit reports the same 66 error signatures as clean main at 077184a; no added diagnostics.
Independent review of scanner boundaries and complete change passed after fixing and verifying the host-show regression. Task documentation drift check passed.

Source is ready for integration; running/installed client has not been updated. Integration, packaging and deployment were not requested.

Target: canonical Code preview behavior/architecture during later serialized integration. Record that confirmed empty/material-only projects render a local empty state before creating a conversation or dispatching OPEN_WORK_PROMPT, while existing/uncertain work retains startup and healthy-address recovery. Evidence: user approval, Main side-effect assertions and UI regressions. Future impact: prevents browsing empty projects from adding operation-chat context or consuming model calls. This narrows the older always-start-on-missing-URL behavior; user approval is already supplied. No canonical documents changed in this feature task.