Content Manager now shows Title and Summary columns from Kiwix metadata
instead of just raw filenames. Metadata is captured when files are
downloaded from Content Explorer and stored in a new zim_file_metadata
table. Existing files without metadata gracefully fall back to showing
the filename.
Changes:
- Add zim_file_metadata table and model for storing title, summary, author
- Update download flow to capture and store metadata from Kiwix library
- Update Content Manager UI to display Title and Summary columns
- Clean up metadata when ZIM files are deleted
Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>
