docs(integration): record ai design history client merge

.project-docs/30-worklog/current-state.md

@@ -4,6 +4,15 @@ This file is the integrated default-branch snapshot. Feature tasks record progre
 
 ## Integrated Through
 
+- AI Design history source commit `bf0b805` from feature task
+  `20260819-history-load-stall-a92d` is integrated on local `main`.
+  Conversation reads start with the newest ten messages and fetch older pages
+  through opaque cursors; the Canvas keeps its scroll position while
+  prepending. A selected Conversation renders before generation-task
+  reconciliation finishes, rapid A → B → A switching reuses an in-flight
+  event-stream open, and a pending relay/open has bounded cleanup. This is a
+  local source integration only; no packaged-client or deployed-service smoke
+  is claimed.
 - `6478591` / `3a6d388`: AI Canvas task-stream reconciliation now reuses an in-flight `connecting` Conversation stream instead of opening a duplicate; rapid Conversation-switching regression coverage is present. Canonical `main` promotion is pending release of the occupied main worktree, and real slow-handshake Electron smoke remains pending.
 - `ce897f1` / `6504073`: AI Programming now isolates prompt lifecycle, loading and errors by OpenCode Session. Main serializes only runtime/configuration acceptance, verifies project Agent content against an owned fresh runtime generation before execution, and returns typed terminal pending responses without automatically restarting, reloading or disposing the shared runtime. A run that receives no explicit busy/assistant/terminal acknowledgement within 10 seconds ends only that Session and is never replayed automatically. The application-side isolation is verified; real bundled OpenCode/provider two-Session execution concurrency is not claimed.
 - Project-cover source commit `145a6ce571d646325092d1e722282babea503954` from feature task `20260817-project-cover-upload-a6a98e56`, integrated by task `20260813-sync-push-main-9c2f71`. First submission now requires a bounded PNG/JPEG/WebP cover, shows preview/file/reselect feedback, and sends metadata plus cover through Main-owned `POST /api/projects/with-cover`; conflicts stop before version upload and existing draft/published projects remain version-only. The matching Works Square server source is `407c883` (local merge `0cedfc4`). No client package, production deployment, or real-account smoke occurred.

.project-docs/30-worklog/tasks/20260819-integrate-history-client-f18d.md

@@ -0,0 +1,48 @@
+# Task: Integrate AI design history client fix
+
+## Identity
+
+- Task ID: 20260819-integrate-history-client-f18d
+- Mode: Integration
+- Branch: codex/20260819-integrate-history-client-f18d-history-client-final
+- Worktree: D:\mk-integrate-history-final-f18d
+- Base commit: bf0b805d9ff101dff2881ce1eb35a16332006673
+- Owner: codex-root
+- Status: Completed
+
+## Scope
+
+- Fast-forward completed source commit `bf0b805` to local `main` through an
+  isolated integration worktree, and record only the resulting canonical
+  current state.
+
+## Intent And Constraints
+
+- Treat source task records as read-only baseline material. Preserve the latest
+  ten-message cursor page, identity guards, and bounded stream cleanup; do not
+  package or deploy the client as part of this local integration.
+
+## Outcome
+
+- Fast-forwarded source commit `bf0b805` without conflicts, recorded its
+  canonical current state, and promoted the verified integration branch to
+  local `main`.
+
+## Verification
+
+- Source task verification: the full client Vitest suite passed (2,167 tests),
+  and TypeScript/lint checks passed.
+- Integration ancestry: `main` is a direct ancestor of `bf0b805`; this
+  integration base is the exact source commit, so source task-owned documents
+  remain baseline material.
+- Integration full Vitest run passed 2,166 / 2,167 tests; one login direct-route
+  timing test passed immediately when rerun in both the source and integration
+  worktrees. Typecheck and affected-file ESLint passed.
+
+## Follow-ups
+
+- No packaged-client or deployed-service smoke is recorded.
+
+## Promotion Candidates
+
+- None recorded.