Use start_backend.py in Docker CMD and improve nested route debugging

backend/app/main.py

@@ -218,12 +218,19 @@ async def startup_event():
     # DEBUG: print all registered routes for troubleshooting
     try:
         robust_print("[ROUTES] Registered FastAPI routes:")
-        for r in app.routes:
+        def print_route(route, prefix=""):
             try:
-                methods = ",".join(sorted(list(r.methods))) if hasattr(r, 'methods') and r.methods else ''
+                if hasattr(route, 'routes') and route.routes:
+                    for child in route.routes:
+                        print_route(child, prefix=prefix)
+                else:
+                    methods = ",".join(sorted(list(route.methods))) if hasattr(route, 'methods') and route.methods else ''
+                    robust_print(f"[ROUTE] path={getattr(route, 'path', str(route))} name={getattr(route, 'name', '')} methods={methods}")
             except Exception:
-                methods = ''
-            robust_print(f"[ROUTE] path={getattr(r, 'path', str(r))} name={getattr(r, 'name', '')} methods={methods}")
+                robust_print(f"[ROUTE] path={getattr(route, 'path', str(route))} name={getattr(route, 'name', '')} methods=UNKNOWN")
+
+        for r in app.routes:
+            print_route(r)
     except Exception:
         pass
     robust_print("-" * 50, flush=True)

backend/start_backend.py

@@ -14,9 +14,10 @@ if "--fast" in sys.argv:
     os.environ["FAKESHIELD_SKIP_WARMUP"] = "1"
     print(">> Fast Mode enabled: Skipping forensic model pre-loading.")
 
-# Define the command to run (using uvicorn directly for Windows stability)
-# Using sys.executable -m uvicorn to ensure it uses the correct venv
-cmd = [sys.executable, "-m", "uvicorn", "app.main:app", "--host", "0.0.0.0", "--port", "8001"]
+# Define the command to run (using uvicorn directly for stable startup)
+# Use the PORT environment variable if set, otherwise default to Hugging Face's 7860.
+port = int(os.environ.get("PORT", os.environ.get("API_PORT", "7860")))
+cmd = [sys.executable, "-m", "uvicorn", "app.main:app", "--host", "0.0.0.0", "--port", str(port)]
 
 # Change directory to the script's directory (backend)
 os.chdir(os.path.dirname(os.path.abspath(__file__)))