New Features

• Web crawler: new hister index -r <url> command crawls sites recursively (configurable depth, link count, allowed/excluded domains and URL patterns).
• PostgreSQL backend as an alternative to SQLite.
• Extractor pipeline overhaul: configurable extractors with explicit states, new pkg.go.dev and Stack Overflow extractors.
• Desktop readability panel: focused search results load in a split-pane reader on screens wider than 1280 px.

Enhancements

• HTML sanitizer (bluemonday) applied to all extracted content.
• metadata field added to documents for arbitrary key/value data.
• Admin users can create global indexes or indexes on behalf of other users.
• hister index skips already-indexed URLs by default; pass --force to reindex.
• URL and domain wildcard matching automatically anchors to start and end.
• import command renamed to import-browser.
• Various UI improvements (ToC in API docs, document indexed date in preview, search query in tab title, WebSocket optimisations).

Bug Fixes

• Browser history database opened read-only to avoid lock conflicts.
• History entries deleted when their associated document is deleted.
• Fixed field-specific alternation parts in query parser.
• HTML field no longer leaks into search results.
• URL changes after HTTP redirects now resolved correctly.
• Various crawler, dark mode and mobile layout fixes.