fix: clean Dockerfile with Piper TTS, external patch script

ai/Dockerfile

@@ -38,49 +38,24 @@ USER hermes
 # On copie tout le projet d'un coup sans assumer la présence de fichiers de lock spécifiques
 COPY --chown=hermes:hermes . .
 
-# ---------- Python virtualenv ----------
+# ---------- Python virtualenv avec Piper TTS ----------
 RUN uv venv && \
-    uv pip install --no-cache-dir sounddevice numpy faster-whisper
+    uv pip install --no-cache-dir piper-tts sounddevice numpy faster-whisper
 
-# ---------- Patch tts_tool.py to add Coqui provider ----------
-RUN /opt/hermes/.venv/bin/python3 -c "
-tts_path = '/opt/hermes/.venv/lib/python3.13/site-packages/tools/tts_tool.py'
-with open(tts_path) as f:
-    code = f.read()
-coqui_block = '''
-        elif provider == \"coqui\":
-            logger.info(\"Generating speech with Coqui TTS (GPU, local)...\")
-            import subprocess
-            coqui_python = \"/opt/coqui-tts/bin/python3\"
-            coqui_script = \"/opt/coqui-tts/bin/coqui_synth.py\"
-            coqui_config = tts_config.get(\"coqui\", {})
-            model = coqui_config.get(\"model\", \"tts_models/en/vctk/vits\")
-            use_gpu = coqui_config.get(\"use_gpu\", True)
-            speaker = coqui_config.get(\"speaker\", \"\")
-            cmd = [
-                coqui_python, coqui_script,
-                \"--text\", text,
-                \"--out\", file_str,
-                \"--model\", model,
-            ]
-            if use_gpu:
-                cmd.append(\"--gpu\")
-            if speaker:
-                cmd.extend([\"--speaker\", speaker])
-            result = subprocess.run(cmd, capture_output=True, text=True, timeout=120)
-            if result.returncode != 0:
-                stderr = result.stderr.strip()
-                raise RuntimeError(f\"Coqui TTS failed: {stderr or 'unknown error'}\")
-            logger.info(\"Coqui TTS audio saved: %s\", file_str)
-'''
-code = code.replace(
-    '        else:\n            # Default: Edge TTS (free), with NeuTTS as local fallback',
-    coqui_block + '        else:\n            # Default: Edge TTS (free), with NeuTTS as local fallback'
-)
-with open(tts_path, 'w') as f:
-    f.write(code)
+# ---------- Télécharger la voix Piper Ryan ----------
+RUN mkdir -p /opt/hermes/.venv/share/piper/voices && \
+    /opt/hermes/.venv/bin/python3 -c "
+import urllib.request
+base = '/opt/hermes/.venv/share/piper/voices'
+url = 'https://huggingface.co/rhasspy/piper-voices/resolve/main/en/en_US/ryan/high/en_US-ryan-high.onnx'
+urllib.request.urlretrieve(url + '?download=true', base + '/en_US-ryan-high.onnx')
+urllib.request.urlretrieve(url + '.onnx.json?download=true', base + '/en_US-ryan-high.onnx.json')
 "
 
+# ---------- Patch tts_tool.py: remplacer Coqui par Piper, supprimer Edge ----------
+COPY ai/patch_tts_tool.py /tmp/patch_tts_tool.py
+RUN /opt/hermes/.venv/bin/python3 /tmp/patch_tts_tool.py && rm /tmp/patch_tts_tool.py
+
 # ---------- Runtime ----------
 ENV HERMES_HOME=/opt/data
 ENV PATH="/opt/data/.local/bin:${PATH}"