fix: sync scheduler memory manager factory

api/state.py

@@ -161,6 +161,24 @@ def _get_planner() -> Any:
     except Exception: _planner = None
     return _planner
 
+
+_memory_manager: Any = None
+_memory_manager_lock = _asyncio_mod.Lock()
+
+async def _get_mem_manager_async() -> Any:
+    """Return the shared initialized MemoryManager for agent runs."""
+    global _memory_manager
+    if _memory_manager is not None:
+        return _memory_manager
+    async with _memory_manager_lock:
+        if _memory_manager is not None:
+            return _memory_manager
+        from memory.manager import MemoryManager
+        manager = MemoryManager(sb_client=_get_sb())
+        await manager.init()
+        _memory_manager = manager
+        return _memory_manager
+
 # ── Prune helpers ─────────────────────────────────────────────────────────────
 def _prune_checkpoints() -> None:
     now = int(time.time() * 1000)