# Dummy XTTS2 logic placeholder
# Replace with real TTS model loading

def synthesize(job: dict):
    # return artificial sine wave placeholder
    import numpy as np
    sr=22050
    t=np.linspace(0,0.3,int(sr*0.3))
    tone=(0.1*np.sin(2*np.pi*440*t)).astype('float32')
    return tone.tobytes()