Fix staticmethod patching via __func__

app.py

@@ -11,6 +11,7 @@ from fastapi.responses import JSONResponse
 from einops import rearrange
 from huggingface_hub import login
 from stable_audio_3 import StableAudioModel
+from contextlib import asynccontextmanager
 
 for _stream in (sys.stdout, sys.stderr):
     if hasattr(_stream, "reconfigure"):
@@ -177,21 +178,21 @@ with gr.Blocks(title="Respite API") as demo:
 
 
 # ---------------------------------------------------------------------------
-# Monkey-patch App.create_app to inject discovery routes.
+# Inject discovery routes into the Gradio FastAPI app.
 #
-# Gradio's Blocks.launch() calls App.create_app() which creates a brand-new
-# FastAPI app, discarding anything we put on demo.app earlier.  By wrapping
-# create_app we can add our routes to the app that actually gets served.
+# Gradio's Blocks.launch() creates a new FastAPI app via App.create_app()
+# and any routes on demo.app before launch() are lost.  We intercept the
+# app creation by wrapping the FastAPI app returned by the Gradio server's
+# configure_app / create_app lifecycle, then add our routes at startup.
 # ---------------------------------------------------------------------------
 
 from gradio.routes import App as GradioApp
 
-_original_create_app = GradioApp.create_app
+_orig_create_app = GradioApp.create_app.__func__
 
 
-@staticmethod
-def _patched_create_app(blocks=None, **kwargs):
-    fa_app = _original_create_app(blocks=blocks, **kwargs)
+def _patched_create_app(blocks, **kwargs):
+    fa_app = _orig_create_app(blocks, **kwargs)
 
     @fa_app.get("/respite/resources")
     def _resources():
@@ -201,10 +202,10 @@ def _patched_create_app(blocks=None, **kwargs):
     def _specs():
         return JSONResponse({**API_SPECS, "runtime": _get_runtime_specs()})
 
-    _log("Respite API discovery routes injected into Gradio app")
+    _log("Respite API discovery routes injected")
     return fa_app
 
 
-GradioApp.create_app = _patched_create_app
+GradioApp.create_app = staticmethod(_patched_create_app)
 
 demo.queue(max_size=4, default_concurrency_limit=1)