Function player_recover_stream 

pub async fn player_recover_stream(
    player: State<'_, PlayerStateWrapper>,
) -> Result<bool, String>

Try to recover playback after a recoverable player error, reporting whether it was handled.

The frontend’s error handler stops the player, which is right for a real failure and wrong for a network blip — it turned every hiccup into “playback died”. This is the echo path for backends that cannot decide in-process: MpvBackend is constructed before PlayerController exists ([lib.rs]), so its event thread has no controller to ask. It emits the error, the frontend echoes it here, and the decision stays in Rust — the same shape as PlaybackEnded → player_on_playback_ended.

Returns true when the stream was re-opened and the caller must NOT stop the player; false when the error is real and should be surfaced as before. Android decides inside its JNI callback and only emits errors it has already declined to recover, so this reports false for those without a second opinion — the shared attempt budget is spent by then either way.

TRACES: UR-004, UR-040 | DR-130 | UT-117