fix(canvas): use server video duration options

.project-docs/30-worklog/tasks/20260818-video-duration-server-config-7b4e.md

@@ -0,0 +1,67 @@
+# Task: Load AI Design video duration options from server
+
+## Identity
+
+- Task ID: 20260818-video-duration-server-config-7b4e
+- Mode: Feature
+- Branch: main
+- Worktree: D:\Datas\OthersProjects\makelore
+- Base commit: 86ffeac066ca03cdaacb6f12eec11dc1e258432a
+- Owner: codex
+- Status: Ready for Integration
+
+## Scope
+
+- Update the AI Design video confirmation card to use the active Quote's
+  server-provided `generationOptions.durations` for both rendering and
+  validation, removing the client-side 2–6 second range coupling.
+- Add a regression proving an enabled duration outside the former local range
+  is rendered, can be selected, re-quoted, and submitted through the existing
+  confirmation flow.
+- Do not change the API payload or provider contract; the server Quote remains
+  the authority for available and disabled durations.
+
+## Intent And Constraints
+
+- Preserve disabled options and the existing “must re-quote after changing a
+  parameter” behavior.
+- Keep legacy/invalid quotes fail-closed when no enabled server duration is
+  selected; use a server-driven validation message rather than naming a local
+  range.
+- Keep the local preview adapter unchanged; this change targets the cloud
+  Makelore adapter and the shared Quote confirmation UI.
+
+## Outcome
+
+- `ImageCanvas` now renders enabled video durations directly from the active
+  server Quote's `generationOptions.durations`.
+- Confirmation validation now accepts only a non-null duration that matches an
+  enabled server option; the previous client-side 2–6 second range check was
+  removed so future server configuration changes do not require a client
+  release.
+- The confirmation error is server-driven and no longer names a local range.
+- Added a regression using server-provided `7` and `15` second options that
+  verifies the options are shown, the initial invalid selection is blocked,
+  `15` survives re-quoting, and the final confirmation receives `15`.
+
+## Verification
+
+- Red test: the new regression initially received only `['', '2', '6']`,
+  proving the old client-side range filter was still active.
+- `pnpm exec vitest run tests/unit/image-canvas-page.test.tsx tests/unit/works-square-design-workspace.test.ts` — 79 passed.
+- `pnpm run typecheck` — passed.
+- `pnpm exec eslint src/pages/ImageCanvas/index.tsx tests/unit/image-canvas-page.test.tsx` — passed.
+- `pnpm run build:vite` — passed for Renderer, Electron Main, and Preload;
+  only existing dynamic-import and chunk-size warnings were reported.
+- `git diff --check` — passed; Git reported only the repository's LF-to-CRLF
+  checkout warnings.
+
+## Follow-ups
+
+- The server must continue publishing a valid enabled duration list in each
+  video Quote; an empty or all-disabled list intentionally keeps confirmation
+  unavailable.
+
+## Promotion Candidates
+
+- None recorded.