docs: record AI design session freeze integration

.project-docs/30-worklog/tasks/20260819-integrate-session-freeze-7c4e.md

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+# Task: Integrate AI design session freeze fix
+
+## Identity
+
+- Task ID: 20260819-integrate-session-freeze-7c4e
+- Mode: Integration
+- Branch: codex/20260819-integrate-session-freeze-7c4e-integrate-session-freeze
+- Worktree: D:\mk-merge-session-freeze-4c2e
+- Base commit: 31332f6d766bd3733e6fbb9c07688765368c2fa0
+- Owner: codex
+- Status: Ready for integration
+
+## Scope
+
+- Integrate the reviewed client fix from feature task `20260819-makelore-session-freeze-7c4e` (`3a6d388`) into the client `main` base `31332f6`.
+- Preserve the peer task `20260818-video-duration-server-config-7b4e` and its occupied canonical worktree; do not rewrite `main` or any unrelated source.
+
+## Intent And Constraints
+
+- Merge only the reviewed feature commit with a non-fast-forward integration commit; no reset, force update, stash, or destructive cleanup.
+- Keep the feature task record immutable and record integration evidence only in this integration task and the canonical `current-state.md`.
+- Leave the integration branch ready for promotion once the canonical `main` worktree is released by its owner.
+
+## Outcome
+
+- Created merge commit `6478591` (`merge: integrate AI design session freeze fix`) with no conflicts. The merge contains the source task record, the `connecting`-stream reconciliation fix in `src/stores/image-workspace.ts`, and its regression test in `tests/unit/image-workspace-store.test.ts`.
+
+## Verification
+
+- Source worktree verification recorded by the feature task passed: focused store tests 31/31, adjacent Canvas/workspace tests 78/78, scoped ESLint, TypeScript `--noEmit`, `git diff --check`, documentation drift, and independent Sol review PASS.
+- Integration merge is clean and `git diff --check` is required after this record update. The isolated integration worktree initially lacked dependencies, so an additional dependency-backed integration test run is recorded separately if available; this does not invalidate the already-passing source verification.
+
+## Follow-ups
+
+- Canonical client `main` remains owned by `20260818-video-duration-server-config-7b4e`; after that task releases the worktree, promote `6478591` to `main` and rerun the focused verification on the canonical checkout.
+- Perform a real Electron smoke with a deliberately slow event-stream handshake to cover the production timing boundary; this remains a follow-up from the feature task.
+
+## Promotion Candidates
+
+- `6478591` / `3a6d388`: update `current-state.md` under `Integrated Through` when the merge commit is promoted to canonical `main`.