diff --git a/app/infrastructure/neo4j_profile_projection.py b/app/infrastructure/neo4j_profile_projection.py
index 50f2ddd..4dcba13 100644
--- a/app/infrastructure/neo4j_profile_projection.py
+++ b/app/infrastructure/neo4j_profile_projection.py
@@ -11,7 +11,7 @@ from app.core.conversation_privacy import sanitize_customer_service_message
 
 
 class Neo4jQueryDriver(Protocol):
-    async def execute_query(self, query: str, **parameters: Any) -> Any: ...
+    async def execute_query(self, *args: Any, **kwargs: Any) -> Any: ...
 
 
 @dataclass(frozen=True)
diff --git a/app/worker/__main__.py b/app/worker/__main__.py
index a81bfd7..963957b 100644
--- a/app/worker/__main__.py
+++ b/app/worker/__main__.py
@@ -1,9 +1,12 @@
 import argparse
 import asyncio
 import logging
+from typing import Any
 
 from app.core.config import get_settings
 from app.infrastructure.db import engine
+from app.infrastructure.neo4j_profile_projection import Neo4jProfileProjection
+from app.worker.memory_sync_outbox_worker import MemorySyncOutboxWorker
 from app.worker.offsite_mail_worker import OffsiteMailWorker
 from app.worker.runtime import WorkerRuntime
 
@@ -14,10 +17,28 @@ async def serve(*, once: bool = False) -> None:
     settings = get_settings()
     runtime = WorkerRuntime(settings=settings)
     offsite_worker = OffsiteMailWorker(settings)
+    neo4j_driver: Any | None = None
+    memory_sync_worker: MemorySyncOutboxWorker | None = None
+    if settings.neo4j_password:
+        from neo4j import AsyncGraphDatabase
+
+        neo4j_driver = AsyncGraphDatabase.driver(
+            settings.neo4j_uri,
+            auth=(settings.neo4j_username, settings.neo4j_password),
+        )
+        memory_sync_worker = MemorySyncOutboxWorker({
+            "neo4j": Neo4jProfileProjection(neo4j_driver).upsert,
+        })
+    else:
+        logger.warning("Neo4j password not configured; profile projection remains pending")
     try:
         while True:
             try:
                 worked = await runtime.run_once()
+                if memory_sync_worker is not None:
+                    worked = await memory_sync_worker.run_once(
+                        target_store="neo4j"
+                    ) or worked
                 worked = await offsite_worker.run_once() or worked
             except Exception:
                 # 常驻 Worker 不能因为"某一轮"的异常就整体退出：数据库抖动、
@@ -35,6 +56,8 @@ async def serve(*, once: bool = False) -> None:
                 await asyncio.sleep(settings.worker_poll_seconds)
     finally:
         await offsite_worker.close()
+        if neo4j_driver is not None:
+            await neo4j_driver.close()
         await engine.dispose()