Add --transcribe option to CLI for generating LilyPond transcriptions

src/io.py

@@ -410,6 +410,13 @@ def main():
         default=None,
         help="Enable OSC playback (optionally specify chord file, default: output/output_chords.json)",
     )
+    parser.add_argument(
+        "--transcribe",
+        nargs="*",
+        metavar=("INPUT", "OUTPUT"),
+        default=None,
+        help="Generate LilyPond transcription (optionally: input_file output_name)",
+    )
     parser.add_argument(
         "--osc-ip",
         type=str,
@@ -430,6 +437,33 @@ def main():
     )
     args = parser.parse_args()
 
+    # Handle transcription mode (separate from generation)
+    if args.transcribe is not None:
+        import json
+        from .transcriber import transcribe
+
+        input_file = (
+            args.transcribe[0]
+            if len(args.transcribe) > 0
+            else "output/output_chords.json"
+        )
+        output_name = (
+            args.transcribe[1]
+            if len(args.transcribe) > 1
+            else "compact_sets_transcription"
+        )
+
+        with open(input_file) as f:
+            chords = json.load(f)
+
+        print(f"Transcribing {len(chords)} chords from {input_file}")
+        transcribe(
+            chords,
+            output_name,
+            fundamental=args.fundamental,
+        )
+        return  # Exit after transcribing
+
     # Handle OSC playback mode (separate from generation)
     if args.osc_play:
         from .osc_sender import OSCSender