Ajout du sampler et de l'input

src/lib/audio/engines/FourOpFM.ts

@@ -71,6 +71,10 @@ export class FourOpFM implements SynthEngine<FourOpFMParams> {
     return 'Four-operator FM synthesis with multiple algorithms, envelope curves, and LFO waveforms';
   }
 
+  getType() {
+    return 'generative' as const;
+  }
+
   generate(params: FourOpFMParams, sampleRate: number, duration: number): [Float32Array, Float32Array] {
     const numSamples = Math.floor(sampleRate * duration);
     const leftBuffer = new Float32Array(numSamples);