diff --git a/insta-lab/app/internal_router.py b/insta-lab/app/internal_router.py
index 38be8e5..f4e00ae 100644
--- a/insta-lab/app/internal_router.py
+++ b/insta-lab/app/internal_router.py
@@ -56,6 +56,12 @@ def insta_update(payload: UpdatePayload):
         result_id=result_id,
         error=payload.error,
     )
+    # succeeded 시 slate_status도 'rendered'로 갱신 (cutover 후 NAS가 처리)
+    if payload.status == "succeeded" and result_id is not None:
+        try:
+            db.update_slate_status(result_id, "rendered")
+        except Exception:
+            logger.exception("update_slate_status %s 실패 (무시)", result_id)
     logger.info(
         "internal/insta/update task=%s status=%s progress=%d",
         payload.task_id, payload.status, payload.progress,
diff --git a/insta-lab/app/main.py b/insta-lab/app/main.py
index 31539e2..93b56ac 100644
--- a/insta-lab/app/main.py
+++ b/insta-lab/app/main.py
@@ -161,12 +161,20 @@ async def _bg_create_slate(task_id: str, keyword: str, category: str, keyword_id
     try:
         db.update_task(task_id, "processing", 30, "카피 생성 중")
         sid = card_writer.write_slate(keyword=keyword, category=category)
-        db.update_task(task_id, "processing", 70, "카드 렌더 중")
-        await card_renderer.render_slate(sid, template=f"{INSTA_DEFAULT_THEME}/card.html.j2")
-        db.update_slate_status(sid, "rendered")
         if keyword_id:
             db.mark_keyword_used(keyword_id)
-        db.update_task(task_id, "succeeded", 100, "완료", result_id=sid)
+        # Redis 큐에 push — Windows insta-render worker가 BLPOP 후 렌더
+        from datetime import datetime, timezone, timedelta
+        kst = timezone(timedelta(hours=9))
+        payload = {
+            "task_id": task_id,
+            "kind": "insta",
+            "params": {"slate_id": sid, "theme": INSTA_DEFAULT_THEME},
+            "submitted_at": datetime.now(kst).isoformat(),
+        }
+        await redis_client.rpush("queue:insta-render", json.dumps(payload))
+        # 사용자는 GET /api/insta/tasks/{task_id}로 폴링 — worker가 webhook으로 status update
+        db.update_task(task_id, "processing", 70, "Redis 큐 푸시 → Windows worker 대기 중", result_id=sid)
     except Exception as e:
         logger.exception("create slate failed")
         db.update_task(task_id, "failed", 0, "", error=str(e))
@@ -200,13 +208,20 @@ def get_slate(slate_id: int):
 
 
 async def _bg_render(task_id: str, slate_id: int):
+    """Redis 큐에 push. 실 렌더는 Windows insta-render worker."""
     try:
-        db.update_task(task_id, "processing", 30, "재렌더 중")
-        await card_renderer.render_slate(slate_id, template=f"{INSTA_DEFAULT_THEME}/card.html.j2")
-        db.update_slate_status(slate_id, "rendered")
-        db.update_task(task_id, "succeeded", 100, "완료", result_id=slate_id)
+        from datetime import datetime, timezone, timedelta
+        kst = timezone(timedelta(hours=9))
+        payload = {
+            "task_id": task_id,
+            "kind": "insta",
+            "params": {"slate_id": slate_id, "theme": INSTA_DEFAULT_THEME},
+            "submitted_at": datetime.now(kst).isoformat(),
+        }
+        await redis_client.rpush("queue:insta-render", json.dumps(payload))
+        db.update_task(task_id, "processing", 30, "Redis 큐 푸시 → Windows worker 대기 중")
     except Exception as e:
-        logger.exception("render failed")
+        logger.exception("queue push failed")
         db.update_task(task_id, "failed", 0, "", error=str(e))