chore(openspec): drop 9 superseded proposals + 11 stub archive files

Drop 9 batch proposals that are superseded by the boocode-lift-analysis
(boocontext-audit, conductor upgrades, self-healing/verify-gate skills):
add-3tier-memory, import-llm-evaluator, import-pregel-engine, plugin-platform,
conductor-evolution, code-intelligence-upgrade, dev-workflow, ui-overhaul,
agent-reliability.

Delete 11 stub archive files (49-66B each, 'Status: Shipped. Archived.' only)
that provide zero documentation value over the existing CHANGELOG.md + git tags.

openspec/changes/enhanced-file-panel/tasks.md

@@ -0,0 +1,46 @@
+# Enhanced File Panel — tasks
+
+## Tasks
+
+- [ ] 1. **Server: whitespace param** — Add `ignoreWhitespace` param to `getGitDiff()` in
+  `apps/server/src/services/git_diff.ts`. Append `-w` to git diff argv when true.
+  Add `whitespace=1` query param to `GET /api/projects/:id/git/diff` route.
+
+- [ ] 2. **Server: write_file endpoint** — Add `POST /api/projects/:id/write_file` with
+  pathGuard validation and atomic file write. Wire client in `api/client.ts`.
+
+- [ ] 3. **Server tests** — Add tests for whitespace param and write_file endpoint.
+  (`apps/server/src/services/__tests__/git_diff.test.ts` + new write tests)
+
+- [ ] 4. **Frontend: useDiffPreferences hook** — Create `useDiffPreferences.ts` with
+  localStorage persistence for layout, wrapLines, hideWhitespace.
+
+- [ ] 5. **Frontend: GitDiffView toolbar** — Add toolbar row with Layout toggle,
+  Hide whitespace toggle, Wrap lines toggle, Expand/Collapse all, Refresh.
+
+- [ ] 6. **Frontend: diff layout utilities** — Create `utils/diff-layout.ts` with
+  `buildNumberedDiffHunks()`, `buildSplitDiffRows()`, `buildUnifiedDiffLines()`.
+
+- [ ] 7. **Frontend: DiffSplitView component** — Side-by-side renderer with two aligned
+  columns, Shiki highlighting per side, thin divider.
+
+- [ ] 8. **Frontend: Integrate split layout in GitDiffView** — Branch render path based
+  on `layout` preference. Wire collapse/expand state to all files.
+
+- [ ] 9. **Frontend: Inline comment store** — Create `stores/useDiffCommentStore.ts`
+  with Zustand + localStorage persistence. CRUD operations.
+
+- [ ] 10. **Frontend: InlineReviewGutterCell + InlineReviewEditor** — Gutter cells
+  with "+" on hover, editor textarea anchored below the target line.
+
+- [ ] 11. **Frontend: InlineReviewThread** — Comment thread display below diff lines.
+  Collapsible, shows body + timestamp + edit/delete.
+
+- [ ] 12. **Frontend: Integrate comments in GitDiffView** — Wire gutter cells,
+  editor, and thread into the diff line rendering.
+
+- [ ] 13. **Frontend: File editing in RightRail** — Double-click file → inline
+  textarea → Save/Cancel → write_file API → tree refresh.
+
+- [ ] 14. **Build + smoke test** — Verify `pnpm -C apps/web build` and
+  `pnpm -C apps/server build`. Run all QA scenarios.