m4

src/types/audio.ts

@@ -52,12 +52,17 @@ export interface PlayerState {
 }
 
 // EQ Band
+export type EQBandType = 'lowshelf' | 'peaking' | 'highshelf' | 'highpass' | 'lowpass';
+
 export interface EQBand {
   id: string;
-  type: 'lowshelf' | 'peaking' | 'highshelf' | 'highpass' | 'lowpass';
+  type: EQBandType;
   frequency: number;
   gain: number;
   Q: number;
+  // Per-band bypass (mobile addition vs desktop — the EQ screen's per-band On toggle).
+  // A disabled band is passthrough and is skipped in the response curve.
+  enabled: boolean;
 }
 
 // EQ Preset

src/types/library.ts

@@ -30,6 +30,12 @@ export interface DbTrack {
   mtime: number;
   added_at: number;
   modified_at: number;
+  // M4 loudness facts (NULL until analyzed). loudness_lufs: integrated LUFS (dB,
+  // negative); sample_peak: linear [0,1]; replay_gain_*: tag dB when present.
+  loudness_lufs: number | null;
+  sample_peak: number | null;
+  replay_gain_track_db: number | null;
+  replay_gain_album_db: number | null;
 }
 
 export interface LibraryFolder {