chore(coding): record ML-03 correction

.project-docs/30-worklog/tasks/20260826-makelore-data-service-client-b72e4c19.md

@@ -96,6 +96,15 @@
   deleted from this coordinator after cherry-pick; the source worktree retains
   its own record. The ML-04 frontier is this integrated commit plus the
   coordinator's cleanup/record commit.
+- Applied the ML-03 post-merge correctness correction from source commit
+  `0ecceef15d2e43190f835fd71a7a1478222f1ba8` onto coordinator frontier
+  `e15d8b7f51bea6b56558c981964082a4e76e523c`. The expected modify/delete
+  conflict was limited to the already-removed foreign ML-03 task record; it
+  was kept deleted, and the correction cherry-picked as feature commit
+  `6b36753` (`fix(coding): reject mismatched Data Service errors`). The Main
+  client now rejects known error codes paired with undocumented HTTP statuses
+  as `upstream_invalid_response`, with one focused regression test. The ML-04
+  frontier is `6b36753` plus this coordinator record commit.
 
 ## Verification
 
@@ -150,6 +159,16 @@
 - `git diff --check`: passed.
 - Coordinator branch, clean state, exact ML-02 HEAD, and ML-03 commit parent
   were verified before integration; cherry-pick completed without conflicts.
+- ML-03 correction focused tests: the same 3-file command passed 18 tests after
+  integrating `6b36753`.
+- ML-03 correction `pnpm typecheck`: passed.
+- ML-03 correction `pnpm lint:check`: passed with 0 errors and the same 5
+  existing warnings in `src/pages/Home/index.tsx` and
+  `src/pages/Makelore/index.tsx`.
+- ML-03 correction `git diff --check`: passed.
+- Correction cherry-pick was applied from the exact `e15d8b7` coordinator
+  frontier; only the expected foreign task-record modify/delete conflict
+  occurred, and the source record remains in the source worktree.
 
 ## Follow-ups