Address code review findings from reuse, quality, and efficiency agents:
- Cache manifest JSON and service worker JS at init (was rebuilt per
request with allocations and JSON encoding on every hit)
- Add ImagePathsByUser store method for targeted image cleanup (was
loading 100k full fave objects just to read image_path)
- Add missing aria-label on privacy toggle in fave_list.html (inline
copy had drifted from the partial — accessibility bug)
- Fix comment/function name mismatch in pwa.go
- Remove redundant user nil-check in handleShare (requireLogin guards)
Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
Ole-Morten Duesund
e379039fe8