Improve search result display to match Nextcloud's native search providers by using mimetype-specific icons and preview thumbnails.
**File Results:**
- Use preview thumbnails for images/PDFs (core.Preview API)
- Use mimetype-specific icon classes (icon-pdf, icon-text, icon-image, etc.)
- Detect folders and use icon-folder appropriately
**Other Document Types:**
- Notes: icon-notes
- Deck Cards: icon-deck
- Calendar: icon-calendar
- News: icon-rss
- Contacts: icon-contacts
**API Changes:**
- Management API now includes mime_type in search results
- SemanticSearchProvider uses IMimeTypeDetector and IPreview services
This makes Astroglobe search results visually consistent with Files, Notes, and other native providers.
🤖 Generated with [Claude Code](https://claude.com/claude-code)
Co-Authored-By: Claude Sonnet 4.5 <noreply@anthropic.com>
- Add Plotly.js 3D scatter plot showing search results in PCA space
- Create shared visualization.py module to avoid code duplication
- Pass include_pca parameter through API chain to enable coordinates
- Fix OAuth redirects to use /settings/user/astroglobe
The visualization shows document embeddings projected to 3D via PCA,
with the query point highlighted in red. Uses Viridis colorscale
for score visualization, matching the existing vector-viz page.
🤖 Generated with [Claude Code](https://claude.com/claude-code)
Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>
Chris Coutinho