This introduces a new stage in the watch history feed pipeline that fetches missing video metadata from relays. Since watch history storage was optimized to store only event IDs, this hydration step ensures that the UI can display titles and thumbnails without requiring them to be persisted in the history payload itself.
- Implemented `createWatchHistoryHydrationStage` in `js/feedEngine/watchHistoryFeed.js`.
- Integrated `convertEventToVideo` to transform fetched events into usable video objects.
- Added a comprehensive integration test in `tests/watch-history.test.mjs` verifying the full flow from ID-only storage to hydrated feed items.
Removes the metadata argument from `WatchHistoryService.publishView` and cleans up the associated caching and resolution logic in `watchHistory.js` and `watchHistoryFeed.js`. Deletes `js/watchHistoryMetadata.js` as it is no longer used.
This simplification ensures watch history strictly manages pointers and timestamps, leaving metadata resolution to higher-level consumers. It also reduces the payload size and complexity of persisted history records.
Tests have been updated to reflect the API changes.
google-labs-jules[bot]