remove ace-server understand proxy, captioning stays librosa + txt sidecars

app.py

@@ -289,37 +289,6 @@ def _start_ace_server():
     return False
 
 
-# ---------------------------------------------------------------------------
-# /understand proxy -- caption audio via ace-server GGUF
-# ---------------------------------------------------------------------------
-
-def understand_audio(audio_file):
-    """Send audio to ace-server /understand endpoint, return metadata."""
-    if not _server_ok():
-        return "ace-server not running"
-    if audio_file is None:
-        return "No audio file"
-    src = audio_file.name if hasattr(audio_file, "name") else str(audio_file)
-    import base64
-    with open(src, "rb") as f:
-        audio_b64 = base64.b64encode(f.read()).decode()
-    try:
-        r = requests.post(
-            f"{ACE_SERVER}/understand",
-            json={"audio": audio_b64},
-            timeout=300,
-        )
-        if r.status_code != 200:
-            return f"Error {r.status_code}: {r.text}"
-        job_id = r.json().get("id")
-        status, elapsed = _poll_job(job_id, timeout=600)
-        if status != "done":
-            return f"Understand {status} after {elapsed:.0f}s"
-        result = _fetch_result(job_id)
-        return json.dumps(result.json(), indent=2)
-    except Exception as e:
-        return f"Error: {e}"
-
 
 # ---------------------------------------------------------------------------
 # CLI mode
@@ -801,17 +770,6 @@ def gradio_main():
                     api_name="check_log",
                 )
 
-        # Hidden API endpoint for audio understanding (no UI, API-only)
-        understand_btn = gr.Button(visible=False)
-        understand_input = gr.File(visible=False)
-        understand_output = gr.Textbox(visible=False)
-        understand_btn.click(
-            understand_audio,
-            inputs=[understand_input],
-            outputs=[understand_output],
-            api_name="understand",
-        )
-
         demo.launch(
             server_name="0.0.0.0",
             server_port=7860,