Claude Code: Test Eve's hypothesis - disable error_handlers to break dependency chain

- Commented out error_handlers import and registration
- Commented out RequestLoggingMiddleware
- Added print("APP_READY") immediately after FastAPI instantiation
- This will verify if error_handlers or middleware is causing startup hang

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

app.py

@@ -763,12 +763,17 @@ app = FastAPI(
     lifespan=lifespan
 )
 
-# Register exception handlers (import here to avoid circular dependency)
-from error_handlers import register_error_handlers
-register_error_handlers(app)
-
-# Add request logging middleware
-app.add_middleware(RequestLoggingMiddleware)
+# DEBUG: Print APP_READY immediately to verify core app instantiation
+print("APP_READY")
+sys.stdout.flush()
+
+# TEMPORARILY DISABLED: Testing Eve's hypothesis - comment out error_handlers to break potential dependency chain
+# # Register exception handlers (import here to avoid circular dependency)
+# from error_handlers import register_error_handlers
+# register_error_handlers(app)
+#
+# # Add request logging middleware
+# app.add_middleware(RequestLoggingMiddleware)
 
 # Mount static files for frontend assets (images, fonts, etc.)
 app.mount("/static", StaticFiles(directory=str(FRONTEND_PATH)), name="static")