… synchronization

- **Google Cast & Remote Playback**:
    - Implements a more robust remote seek mechanism with a state-lock and fail-safe timeout to prevent UI "rubber-banding" during latency.
    - Enhances `CastPlayer` with intelligent Content-Type resolution based on file extensions and MIME types.
    - Refines remote queue handling to maintain UI consistency when the Cast SDK reports partial queue updates.
    - Adds a background status refresh loop to ensure remote playback state (position, play/pause) stays in sync with the UI.
    - Improves remote navigation logic in `PlayerViewModel`, prioritizing direct item jumps to avoid race conditions during rapid track changes.
- **Media Server & Networking**:
    - Updates `MediaFileHttpServerService` to support range requests and streaming for remote devices, replacing in-memory byte loading with efficient stream copying.
    - Refines IP address detection to prioritize LAN-reachable interfaces (Wi-Fi/Ethernet) compatible with Cast discovery.
    - Ensures the internal HTTP server correctly handles start/stop actions via explicit intent actions.
- **UI Components**:
    - **PlayerSeekBar**: Introduces internal seek state to decouple the thumb position from periodic progress updates while the user is actively scrubbing.
    - **CastBottomSheet**: Improves connection state visualization, adding explicit "Connecting" and "Connected" labels for active routes.
- **State Management & Architecture**:
    - Refines `PlaybackStateHolder` and `CastTransferStateHolder` to better coordinate state transitions between local and remote playback.
    - Updates `PlayerViewModel` to suppress local MediaController listeners when a remote session is active, preventing state conflicts.
    - Ensures theme regeneration and lyric loading are triggered consistently during remote track transitions.
- **Bug Fixes & Robustness**:
    - Fixes an issue where remote playback would not resume correctly if the queue was perceived as empty.
    - Adds safety checks for duration and position values (e.g., `coerceAtLeast(0L)`) to prevent UI glitches with negative timestamps.
    - Implements improved resource cleanup for remote progress observers and status jobs in `onCleared`.