Added explicit optimizeDeps.include to pre-bundle common dependencies:
- React ecosystem (react, react-dom, react-router-dom)
- Icon libraries (@icons-pack/react-simple-icons, lucide-react)
- Other deps (date-fns, jszip, zustand, @tanstack/react-virtual)

Also added server.fs.allow config for monorepo file serving.

This should speed up subsequent dev server starts by ensuring these
dependencies are consistently pre-bundled.

Changed all TIMESTAMP columns to TIMESTAMPTZ (timestamp with timezone) to
properly handle timezone-aware timestamps across all tables:
- oauth_states (created_at, expires_at)
- oauth_sessions (created_at, expires_at)
- user_sessions (created_at, expires_at)
- user_uploads (created_at, last_checked)
- source_accounts (last_checked, match_found_at, created_at)
- user_source_follows (created_at)
- atproto_matches (found_at, last_verified, last_follow_check)
- user_match_status (notified_at, viewed_at, followed_at, dismissed_at)
- notification_queue (created_at, sent_at)

This fixes the 5-hour timezone offset issue where timestamps were stored
without timezone info, causing display errors across different timezones.

Previously when loading an upload from extension that hadn't been searched yet,
the app would immediately navigate to the results page showing 'none' for all
matches, then update them as the search progressed.

Now it behaves like the file upload flow:
- Shows loading screen during search
- Navigates to results only after search completes and results are saved
- If upload already has matches, navigates to results immediately

Fixes issue where results were displayed but not saved to database until
page refresh. Root cause: onComplete callback accessed stale searchResults
from closure instead of updated state.

Changes:
- useSearch.searchAllUsers: onComplete now receives SearchResult[] param
- useSearch: uses setSearchResults updater to get current state
- App.tsx: updated all 3 searchAllUsers calls to use finalResults
- Removed setTimeout workarounds

Result: Extension and file upload flows now save immediately after search.