update

backend/generator.py

@@ -46,10 +46,18 @@ async def _run_claude(guide_id: str, prompt: str, timeout: int) -> tuple[int, st
     )
     _active_processes[guide_id] = process
     try:
-        stdout, stderr = await asyncio.wait_for(
-            process.communicate(input=prompt.encode("utf-8")),
-            timeout=timeout,
-        )
+        try:
+            stdout, stderr = await asyncio.wait_for(
+                process.communicate(input=prompt.encode("utf-8")),
+                timeout=timeout,
+            )
+        except asyncio.TimeoutError:
+            process.kill()
+            try:
+                await asyncio.wait_for(process.wait(), timeout=5)
+            except asyncio.TimeoutError:
+                pass
+            raise
         return process.returncode, stdout.decode("utf-8", errors="replace"), stderr.decode("utf-8", errors="replace")
     finally:
         _active_processes.pop(guide_id, None)