refactor: uv-based deps, no nexus auth, LLM retries, lock cleanup, health checks, e2e tests

guarddog_nexus/routes/web.py

@@ -32,6 +32,19 @@ router = APIRouter(tags=["web"])
 _llm_locks: dict[int, asyncio.Lock] = {}
 _llm_lock = asyncio.Lock()
 
+# Cleanup interval for unused LLM locks (30 minutes)
+_LLM_LOCK_CLEANUP_INTERVAL = 1800
+
+
+async def _cleanup_llm_locks():
+    """Periodically clean up unused LLM locks to prevent memory leaks."""
+    while True:
+        await asyncio.sleep(_LLM_LOCK_CLEANUP_INTERVAL)
+        for key in list(_llm_locks.keys()):
+            if not _llm_locks[key].locked():
+                _llm_locks.pop(key, None)
+
+
 _jinja_env = Environment(
     loader=PackageLoader(APP_PACKAGE, "web/templates"),
     autoescape=select_autoescape(),