Introduce UrlMetaScraper with SSRF-safe fetching, OgImageImporter/Processor for WebP uploads via hourly tmp buckets promoted on save, and redirect-html serving for bots and cloaked links.
## Analytics — Live Activity Feed
- Dedicated /stats/live standalone page (mirrors /stats/logs pattern)
- Consistent 3-tab navigation across Statistics / Live Feed / Visit Logs
- checkForUpdates() with skipRender(): O(1) MAX(id) poll — ~100-byte response on no-change
- latestVisitId sentinel (-1) prevents unnecessary first-poll re-render
- Cache key versioned by latestVisitId — fixes bug where concurrent users
could permanently miss a visit due to stale thundering-herd cache
- 3-second thundering-herd cache (key: url_id + date + filters + latestVisitId)
- Country flags via flagcdn.com (precomputed in PHP, Alpine.js CSP-safe onerror)
- time_ago precomputed in PHP — no Carbon::parse() double-instantiation in Blade
- SELECT only 12 needed columns instead of SELECT *; limit 25 rows
- wire:poll.5s.visible — polling stops when widget is off-screen
## Link Organization
- Folders: one folder per link, clickable → filtered link list, link count badge
- Tags: up to 5 tags per link, clickable → filtered link list, link count badge
- Archiving: soft-archive links instead of permanent deletion; restorable
## REST API
- Per-key API scopes: links:read-only (GET) / links:read-write (full CRUD)
- Per-key rate limiting: individual requests/minute per API key
## Translations
- Added stats_live_feed_poll_interval (EN: 'Updates every 5s', PL: 'Aktualizacja co 5s')
## Docs
- README.md: corrected API scopes/rate-limiting docs (features were already implemented)
- README.md: added Folders, Tags, Archiving to features list
- README.md: added v5.0.0 changelog entry
