docs: integrate teacher streaming into main

.project-docs/30-worklog/tasks/20260929-merge-teacher-stream-1e4177fe.md

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+# Task: Integrate teacher reasoning and answer streaming into main
+
+## Identity
+
+- Task ID: 20260929-merge-teacher-stream-1e4177fe
+- Mode: Integration
+- Branch: main
+- Worktree: D:\Datas\OthersProjects\makelore
+- Base commit: f443f3bc668dfc6c9df111506d739d343ee82bba
+- Owner: codex
+- Status: Ready for Integration
+
+## Scope
+
+- Integrate completed teacher streaming source 8ccc4650a2d36ea4a1a7426dbaffc8178255a5e3 into local main and promote its accepted project-memory changes.
+
+## Intent And Constraints
+
+- User explicitly requested merging into main. Concurrent and Planning Gates Passed with exact registry identity and exclusive integration lock. Loaded entry, own/source records, positioning, current state, teacher ADR, architecture and domain/success rules; retained prior same-base peer scope assessment. Historical placeholder peer records remain unknown with no concrete conflicting dependency.
+- Reused the human-authorized primary-checkout handoff recorded by the preceding integration task 20260929-integrate-shortcuts-ml-b75d3c29. Its drift check proved the same three foreign documents unchanged before official release/start --adopt-existing. Preserve them without staging: 20260901-package-122-c5e8.md, 20260901-package-123-d7f3.md and 20260902-client-hang-diagnosis-a47c9e2b.md under this task-record directory.
+- Source records are read-only. Main owns cloud transport; preserve project isolation, published model configuration and billing. No subagents, product redesign, cloud writes, push, deployment or packaging.
+
+## Outcome
+
+- Fast-forwarded local main from f443f3bc668dfc6c9df111506d739d343ee82bba to source 8ccc4650a2d36ea4a1a7426dbaffc8178255a5e3 without conflicts. Main now includes independent streamed reasoning and answer previews with final reply reconciliation.
+- Promoted the user-authorized source candidate into the teacher ADR, decision index, system overview, business rules and Integrated Through. README arrived with the source. The new visible reasoning rule supersedes the old visibility exclusion without including reasoning in answers, tools, future model context or bring-back drafts.
+
+## Verification
+
+- Source evidence: 322 distinct relevant unit cases, standard typecheck, scoped lint, final Vite production compile and one Electron streaming interaction passed. Extended Main typecheck has 66 documented existing diagnostics, none in changed teacher files. Source used deterministic fixtures; real paid-provider and installed-client acceptance remain unverified.
+- Integration checks passed: source ancestry, identical product/tests/source record and diff whitespace. Reused source test evidence because additional edits only update canonical documents. Task-aware documentation drift checked before commit/completion.
+
+## Follow-ups
+
+- User explicitly approved cleaning source task 20260929-teacher-stream-f00acb6f at D:\Datas\OthersProjects\.codex-worktrees\makelore\20260929-teacher-stream-f00acb6f, including ignored dependencies/build output while preserving its branch and commits. Rechecked ready/managed registry state, clean source, committed source record and source inclusion in main; resolved the exact approved path before official retire from the primary checkout.
+- Cleanup BLOCKED: official retire exited 1 with Git error `Directory not empty`. Git removed the linked-worktree registration and .git file, but left a partial directory (including node_modules and some source/resources). Branch codex/20260929-teacher-stream-f00acb6f-teacher-stream still resolves to 8ccc4650a2d36ea4a1a7426dbaffc8178255a5e3. Retained residue and remaining task registry state; did not bypass the skill's exclusive-retire rule with manual deletion or reconstruct metadata. Requires separate supported recovery. This does not invalidate the completed merge.
+- Shipping the updated client and verifying production model reasoning availability remain release work, outside this local merge.
+
+## Promotion Candidates
+
+- Source candidate accepted and promoted as described above; no unresolved canonical conflict or additional promotion.