docs: record completed teacher reference merge

.project-docs/30-worklog/tasks/20260930-teacher-reference-merge-b731e95a.md

@@ -8,7 +8,7 @@
 - Worktree: /Users/chillishark/Makelore 麦洛/.codex-worktrees/makelore/20260930-teacher-reference-merge-b731e95a
 - Base commit: c55e9c718201eb8986a83e545e9b3ad7b110dd7e
 - Owner: codex
-- Status: Planning
+- Status: Ready for Integration
 
 ## Scope
 
@@ -20,19 +20,20 @@
 
 ## Outcome
 
-- Not completed.
+- Merged a931803 (reference-isolation code 36202e0) without conflicts in merge 2849e67 and fast-forwarded local main from c55e9c7. Original source commits, README and regression tests are included; no product changes during merge.
 
 ## Verification
 
-- Not run.
+- Exact full source tree equivalence verified against a931803, excluding only this task record. Source evidence: 125 unit tests, one Electron selection/reference test, typecheck, production compile, scoped lint; full lint has 0 errors and 8 existing warnings. No code change warrants duplicate execution.
+- Whitespace/unmerged-index and clean-main checks passed; main ancestry includes a931803. Official drift checker flags the source task record imported by the merge as FOREIGN_DOC relative to main base. Verified source/current Git blob exactly 5e4b9b292a4120f7222828b5dff9b5a5b4e259ba; the source record is unchanged, with no foreign or canonical edits. Preserved original history and reported the checker limitation rather than adopting or rewriting its ownership.
 
 ## Follow-ups
 
-- None recorded.
+- Main merge complete; remote push was not requested. Trial already contains the fix from the preceding turn and is unchanged. Worktree cleanup is optional and awaiting user choice.
 
 ## Promotion Candidates
 
-- None recorded.
+- Existing source proposal on operation-only, scoped, one-time quote handoff remains for a future canonical integration. No new product decision.
 
 ## Project Context Loaded