feat: added recording MIDI device feature.

src/core/config/ConfigManager.ts

@@ -79,6 +79,7 @@ interface AppConfig {
     enable_audio_capture_for_screen_sharing: boolean;
     lookahead_time: number;
     playback_delay: number;
+    recording_offset: number;
   };
   templates: {
     custom_instructions: string;
@@ -250,7 +251,8 @@ export class ConfigManager {
         audio: {
           enable_audio_capture_for_screen_sharing: false,
           lookahead_time: 0.05,
-          playback_delay: 0.2
+          playback_delay: 0.2,
+          recording_offset: 0
         },
         templates: {
           custom_instructions: ''

src/core/midi-input/KGMidiInput.ts

@@ -15,6 +15,10 @@ export class KGMidiInput {
   private isInitialized: boolean = false;
   private connectedInputs: Map<string, MIDIInput> = new Map();
 
+  // Recording callbacks
+  private onRecordNoteOn: ((pitch: number) => void) | null = null;
+  private onRecordNoteOff: ((pitch: number) => void) | null = null;
+
   // Private constructor to prevent direct instantiation
   private constructor() {
     console.log("KGMidiInput initialized");
@@ -161,11 +165,13 @@ export class KGMidiInput {
     if (command === 0x90 && velocity > 0) {
       console.log(`MIDI Note On: pitch=${pitch}, velocity=${velocity}, channel=${channel}`);
       this.triggerNoteOn(pitch, velocity);
+      this.onRecordNoteOn?.(pitch);
     }
     // Note Off: command = 0x80 (128) or Note On with velocity 0
     else if (command === 0x80 || (command === 0x90 && velocity === 0)) {
       console.log(`MIDI Note Off: pitch=${pitch}, channel=${channel}`);
       this.triggerNoteOff(pitch);
+      this.onRecordNoteOff?.(pitch);
     }
     // Control Change: command = 0xB0 (176)
     else if (command === 0xb0) {
@@ -264,6 +270,16 @@ export class KGMidiInput {
     }
   }
 
+  // ===== RECORDING =====
+
+  public setRecordingCallbacks(
+    onNoteOn: ((pitch: number) => void) | null,
+    onNoteOff: ((pitch: number) => void) | null
+  ): void {
+    this.onRecordNoteOn = onNoteOn;
+    this.onRecordNoteOff = onNoteOff;
+  }
+
   // ===== GETTERS =====
 
   public getIsInitialized(): boolean {