docs(29): add execution summaries for plans 03 and 04

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

.planning/phases/29-image-presentation/29-03-SUMMARY.md

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+---
+phase: 29
+plan: 03
+subsystem: fullstack
+tags: [crop-editor, react-easy-crop, ui]
+key-files:
+  created:
+    - src/client/components/ImageCropEditor.tsx
+  modified:
+    - src/client/components/ImageUpload.tsx
+    - src/client/routes/items/$itemId.tsx
+    - src/client/routes/threads/$threadId/candidates/$candidateId.tsx
+    - package.json
+metrics:
+  tasks: 6
+  commits: 4
+  files-changed: 6
+---
+
+# Plan 29-03 Summary: Zoom+Pan Image Framing Editor
+
+## What was built
+- Installed react-easy-crop library
+- Created ImageCropEditor component with zoom slider (1x-3x), save/cancel buttons, dominant color background
+- Integrated crop editor into ImageUpload (shows after upload when onCropChange provided)
+- Added "Adjust framing" button to item detail page with inline crop editor
+- Added "Adjust framing" button to candidate detail page with inline crop editor
+- Global item detail skipped (no update endpoint exists for global items)
+
+## Commits
+
+| Task | Commit | Description |
+|------|--------|-------------|
+| 1 | 6f4fd78 | Install react-easy-crop |
+| 2 | 23f62fd | Create ImageCropEditor component |
+| 3 | 78a097c | Integrate crop editor into ImageUpload |
+| 4-6 | a18b9d3 | Add crop editor to item and candidate detail pages |
+
+## Deviations
+- Task 5 (global item detail): Skipped "Adjust framing" button because no PUT endpoint exists for global items. Crop fields are in the schema but cannot be updated from the frontend for global items.
+
+## Self-Check: PASSED
+- react-easy-crop installed: YES
+- ImageCropEditor exists: YES
+- ImageUpload has crop editor: YES
+- Item detail has "Adjust framing": YES
+- Candidate detail has "Adjust framing": YES
+- Build passes: YES
+- Lint passes: YES

.planning/phases/29-image-presentation/29-04-SUMMARY.md

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+---
+phase: 29
+plan: 04
+subsystem: backend
+tags: [migration, backfill, sharp]
+key-files:
+  created:
+    - scripts/backfill-dominant-colors.ts
+  modified:
+    - package.json
+metrics:
+  tasks: 2
+  commits: 1
+  files-changed: 2
+---
+
+# Plan 29-04 Summary: Backfill Migration Script
+
+## What was built
+- Created `scripts/backfill-dominant-colors.ts` backfill script
+- Processes items, globalItems (source URLs + image URLs), and threadCandidates
+- Extracts dominant color via Sharp 1x1 resize
+- Idempotent: skips records with existing dominantColor
+- Batch processing with 10 concurrent requests
+- Progress logging per table
+- Added `backfill:colors` npm script
+
+## Commits
+
+| Task | Commit | Description |
+|------|--------|-------------|
+| 1-2 | 6509b33 | Create backfill script and npm shortcut |
+
+## Deviations
+None.
+
+## Self-Check: PASSED
+- Script exists: YES
+- Processes all 3 tables: YES
+- Idempotent (isNull check): YES
+- Batch size 10: YES
+- Progress logging: YES
+- npm script exists: YES
+- Lint passes: YES