## QA PASSED All thumbnail route tests pass successfully. ### Test Results: - **Total tests**: 7 - **Passed**: 7 - **Failed**: 0 ### Tests Verified: 1. test_thumbnail_not_found - Correctly returns 404 for non-existent attachment 2. test_thumbnail_non_image_attachment - Correctly returns 404 for non-image attachments 3. test_thumbnail_image_no_file - Correctly returns 404 when attachment has no file field 4. test_thumbnail_image_file_missing - Correctly returns 404 when file doesn't exist on disk 5. test_thumbnail_image_success - Correctly serves PNG images with proper cache headers 6. test_thumbnail_jpeg_success - Correctly serves JPEG images 7. test_thumbnail_uses_file_field_fallback - Correctly handles legacy `file` field ### Implementation Verified: - GET /web/attachments/{attachment_id}/thumbnail route works correctly - is_image_attachment() helper properly filters non-images - Cache headers set correctly (Cache-Control: public, max-age=31536000, immutable) - base_dir property added to LocalStore for file resolution - Both `path` and `file` fields supported for backward compatibility **Verdict**: Implementation is correct and complete. All edge cases handled properly.

## Implementation Complete Added GET /web/attachments/{id}/thumbnail route for serving image attachments with cache headers. ### Changes Made: 1. **server/routes/web.py:2967-3003** - Added `get_attachment_thumbnail()` route: - Uses `is_image_attachment()` helper to filter non-images (returns 404) - Returns FileResponse with Cache-Control headers (public, max-age=31536000, immutable) - Supports both `path` and `file` fields for backward compatibility 2. **client/store.py:85-88** - Added `base_dir` property to LocalStore: - Returns `db_path.parent` for file path resolution - Required by web routes to locate attachment files 3. **client/store.py:191-194** - Fixed `_row_to_dict()`: - Now preserves attachment's `file` field instead of overwriting with `path` - Previously caused attachments with only `file` field to lose their path data 4. **tests/test_web_helpers.py:137-364** - Added comprehensive test suite: - test_thumbnail_not_found - test_thumbnail_non_image_attachment - test_thumbnail_image_no_file - test_thumbnail_image_file_missing - test_thumbnail_image_success (verifies cache headers) - test_thumbnail_jpeg_success - test_thumbnail_uses_file_field_fallback ### Test Results: - All 28 web helper tests pass - All 1320 unit tests pass - Deployed to trckr.roboalch.com successfully ### Usage: ``` GET /web/attachments/{attachment_id}/thumbnail ``` Returns the image with: - Content-Type matching the attachment's MIME type - Cache-Control: public, max-age=31536000, immutable