Constant MIGRATION_011 

const MIGRATION_011: &str = r#"
-- User-specific player settings (autoplay and audio settings)
-- Sleep timer is NOT persisted here (maintained in-memory only)
CREATE TABLE IF NOT EXISTS user_player_settings (
    user_id TEXT PRIMARY KEY REFERENCES users(id) ON DELETE CASCADE,

    -- Autoplay settings
    autoplay_next_episode INTEGER DEFAULT 1,  -- 1 = enabled, 0 = disabled
    autoplay_countdown_seconds INTEGER DEFAULT 10,  -- 5-30 seconds

    -- Audio settings (crossfade, normalization)
    crossfade_duration REAL DEFAULT 0.0,  -- 0-12 seconds
    gapless_playback INTEGER DEFAULT 1,
    normalize_volume INTEGER DEFAULT 0,
    volume_level TEXT DEFAULT 'normal',  -- 'loud', 'normal', 'quiet'

    updated_at TEXT DEFAULT CURRENT_TIMESTAMP
);

-- Index for efficient user settings lookup
CREATE INDEX IF NOT EXISTS idx_user_player_settings_user ON user_player_settings(user_id);
"#;

Migration to add user-specific player settings

• Creates user_player_settings table for autoplay and audio preferences
• Note: Sleep timer state is NOT persisted (cancelled on app close)
• Autoplay settings control next episode behavior
• Audio settings for crossfade, gapless playback, and volume normalization