Update directional key behavior to separate seeking, showing controls, and
toggling playback. Left/Right now seek without showing controls, while
Up/Down now only show controls instead of toggling playback.
Removes eyebrow text, watched status chips, and progress bars from the
focused hero component on the TV home screen. The underlying model and
UI are simplified to display only the title and basic metadata.
Introduce a `FocusableItem` interface to unify media item properties (ID, type, text, and images) across `ContinueWatchingItem`, `NextUpItem`, and `PosterItem`.
Key changes:
- Implement automatic initial focus on the first available item in `TvHomeContent`.
- Add `onMediaFocused` callbacks to TV sections and cards to track active items.
- Standardize image URL generation and metadata access in home models.
- Clean up unused previews in `HomeScreen`.
- Add UI tests for TV home content focus behavior.
Introduces `TvMediaDetailScaffold` to standardize the layout of Movie, Series, and Episode detail screens. This refactor implements a consistent two-column header design featuring a hero section on the left and an overview panel on the right, supported by a new horizontal and vertical gradient overlay system.
Key changes:
- Created `TvMediaDetailScaffold`, `MediaDetailHeaderRow`, and `MediaDetailSectionTitle` common components.
- Extracted screen-specific hero and overview logic into internal components for `MovieScreen`, `SeriesScreen`, and `EpisodeScreen`.
- Standardized typography, spacing, and focus management across all detail views.
- Added comprehensive UI tests for Movie, Series, and Episode content screens.
- Improved the "Up Next" and "Library Status" visibility on the Series detail page.
