Removed the metadata toggle UI and related logic from the watch history implementation.
- Updated `components/profile-modal.html` to remove the UI block.
- Cleaned up `js/ui/profileModalController.js` and `js/historyView.js` to drop metadata preference state and handlers.
- Updated `tests/watch-history.test.mjs` to remove obsolete test cases referencing `metadataPreference`.
Refactors `js/nostr/watchHistory.js` to store and publish watch history items in monthly buckets (`YYYY-MM`) instead of using chunk splitting. Updates storage version to 3, migrates existing data, and simplifies fetch/merge logic to handle monthly records. Removes legacy chunk rebalancing code. Updates tests to verify monthly bucketing behavior.
google-labs-jules[bot]