add per-user movie ratings with averages and toggle-to-clear behavior
surface ratings in player and movies list with 5-star controls
refine movies card layout and categories dropdown styling
Test plan
Verify movies page shows ratings and allows add/remove rating
Verify player page ratings add/remove works and averages update
Verify categories dropdown renders and layout is stable
## Summary
- add per-user movie ratings with averages and toggle-to-clear behavior
- surface ratings in player and movies list with 5-star controls
- refine movies card layout and categories dropdown styling
## Test plan
- [ ] Verify movies page shows ratings and allows add/remove rating
- [ ] Verify player page ratings add/remove works and averages update
- [ ] Verify categories dropdown renders and layout is stable
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Summary
Test plan