Fix Forntend build issues 6

shared/service_base.py

@@ -116,7 +116,8 @@ class BaseFastAPIService:
         config = {**default_config, **fastapi_kwargs}
 
         # Create FastAPI app
-        self.app = FastAPI(**config)
+        # Disable redirect_slashes to avoid 307 redirects that break behind HTTPS proxies
+        self.app = FastAPI(**config, redirect_slashes=False)
 
         # Setup unified OpenTelemetry telemetry
         # This single call configures: