## Summary
- Normalize Xtream recently-added timestamps across UI, import, and dashboard query paths.
- Filter future/invalid provider dates before ranking rails and migrate legacy millisecond cache rows.
- Add regression coverage for future timestamps, series date priority, and DB migration behavior.
## Validation
- GitHub checks passed, including Unit Tests and Typechecks, Web E2E, Electron E2E on macOS/Ubuntu/Windows, CodeQL, builds, and Greptile Review.
