- Implemented `hydrateVideoHistoryBatch` in `NostrClient` to fetch missing root events and sparse histories in a single `pool.list` request.
- Refactored `hydrateVideoHistory` to use shared helper methods `getLocalVideoHistory` and `_processAndCacheEvent`.
- Added `resolveVideoPostedAtBatch` to `PlaybackCoordinator` which delegates to the batched client method.
- Updated `VideoListView` to collect videos needing timestamp resolution and call the batch method, falling back to individual calls if necessary.
- Added regression test `tests/performance/resolvePostedAt.test.mjs` to verify reduced network calls.
Co-authored-by: PR0M3TH3AN <[email protected]>
