P0 blockers:
- Fix migration numbering conflict and duplicate indexes
- Change comments.post_id FK to ON DELETE CASCADE
- Restrict public post detail endpoint to published posts only
- Fix rate-limiting IP extraction and fallback to ConnectInfo
- Harden HTML sanitizer: deny unknown URL schemes, restrict data URIs
- Remove session token from login response body
- Enforce image pixel/dimension limits on upload and serving
P1 high-risk:
- Validate uploads by magic bytes and decode GIF/WebP
- Add pagination/rate-limiting to search, tag posts, and comments
- Make first-admin registration and slug uniqueness check atomic
- HTML-escape comment author fields
- Improve HTML minify cache key and skip admin/error responses
- Add mobile navigation menu
P2 accessibility/quality:
- Associate form labels with inputs
- Key PostDetail article by slug to re-init scripts on navigation
- Improve image viewer keyboard accessibility
- Make theme toggle SSR-friendly and add aria-label
- Invalidate slug 404 cache on create and pending count on new comment
- Deduplicate tags case-insensitively
P3 cleanup:
- Remove unused tower-http dependency, expand make clean
- Configure DB pool timeouts and verified recycling
- Run background cleanup tasks immediately on startup
- Use SHA-256 for stable disk cache keys
- Log DB errors with Display instead of Debug
- Update README migration instructions
All tests pass (321), clippy clean, dx check clean.
