fix: strip query params (?__theme=...) before path routing — this was causing the 404s

experiments/demo_server.py

@@ -566,14 +566,16 @@ class H(BaseHTTPRequestHandler):
         self.wfile.write(body)
 
     def do_GET(self):
-        if self.path in ("/", "/index.html"):
+        # Strip query parameters (HF Spaces appends ?__theme=... etc)
+        path = self.path.split("?")[0]
+        if path in ("/", "/index.html"):
             body = PAGE.encode()
             self.send_response(200)
             self.send_header("Content-Type", "text/html; charset=utf-8")
             self.send_header("Content-Length", str(len(body)))
             self.end_headers()
             self.wfile.write(body)
-        elif self.path == "/favicon.ico":
+        elif path == "/favicon.ico":
             self.send_response(204); self.end_headers()
         else:
             self.send_error(404)