feat: 회고 시스템 Phase 1 캡처 파이프라인

chat_bridge에 회고 채널 텍스트 폴링 + n8n 포워딩 추가.
n8n 워크플로우(8노드): Webhook → Validate → Qwen 분류 → PostgreSQL INSERT → Chat 확인.
retrospect 스키마 + 3 테이블 (entries, reviews, patterns).

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

chat_bridge.py

@@ -1,4 +1,4 @@
-"""DSM Chat API Bridge — 사진 폴링 + 다운로드 서비스 (port 8091)"""
+"""DSM Chat API Bridge — 사진 폴링 + 회고 텍스트 포워딩 서비스 (port 8091)"""
 
 import asyncio
 import base64
@@ -25,10 +25,15 @@ CHAT_CHANNEL_ID = int(os.getenv("CHAT_CHANNEL_ID", "17"))
 SYNOLOGY_CHAT_WEBHOOK_URL = os.getenv("SYNOLOGY_CHAT_WEBHOOK_URL", "")
 HEIC_CONVERTER_URL = os.getenv("HEIC_CONVERTER_URL", "http://127.0.0.1:8090")
 POLL_INTERVAL = int(os.getenv("POLL_INTERVAL", "5"))
+RETROSPECT_CHANNEL_ID = int(os.getenv("RETROSPECT_CHANNEL_ID", "0"))
+RETROSPECT_CHAT_WEBHOOK_URL = os.getenv("RETROSPECT_CHAT_WEBHOOK_URL", "")
+N8N_RETROSPECT_WEBHOOK_URL = os.getenv("N8N_RETROSPECT_WEBHOOK_URL",
+                                        "http://localhost:5678/webhook/retrospect")
 
 # State
 sid: str = ""
 last_seen_post_id: int = 0
+retro_last_seen_post_id: int = 0
 pending_photos: dict[int, dict] = {}  # user_id -> {post_id, create_at, filename}
 
 
@@ -140,6 +145,47 @@ async def poll_channel(client: httpx.AsyncClient):
         logger.error(f"Poll error: {e}")
 
 
+async def forward_to_n8n(post: dict):
+    payload = {
+        "text": post.get("msg", ""),
+        "user_id": post.get("creator_id", 0),
+        "username": post.get("display_name", post.get("username", "unknown")),
+        "post_id": post.get("post_id", 0),
+        "timestamp": post.get("create_at", 0),
+    }
+    try:
+        async with httpx.AsyncClient(verify=False) as client:
+            resp = await client.post(N8N_RETROSPECT_WEBHOOK_URL,
+                                     json=payload, timeout=10)
+            logger.info(f"Forwarded retrospect post_id={post.get('post_id')} "
+                        f"to n8n: {resp.status_code}")
+    except Exception as e:
+        logger.error(f"Failed to forward to n8n: {e}")
+
+
+async def poll_retrospect_channel(client: httpx.AsyncClient):
+    global retro_last_seen_post_id
+    if not RETROSPECT_CHANNEL_ID:
+        return
+    try:
+        data = await api_call(client, "SYNO.Chat.Post", 8, "list",
+                              {"channel_id": RETROSPECT_CHANNEL_ID, "limit": 10})
+        posts = extract_posts(data)
+        for post in posts:
+            post_id = post.get("post_id", 0)
+            if post_id <= retro_last_seen_post_id:
+                continue
+            # 텍스트 메시지만 포워딩 (파일/시스템 메시지 제외)
+            if post.get("type", "normal") == "normal" and post.get("msg", "").strip():
+                await forward_to_n8n(post)
+        if posts:
+            max_id = max(p.get("post_id", 0) for p in posts)
+            if max_id > retro_last_seen_post_id:
+                retro_last_seen_post_id = max_id
+    except Exception as e:
+        logger.error(f"Retrospect poll error: {e}")
+
+
 async def polling_loop():
     async with httpx.AsyncClient(verify=False) as client:
         # Login
@@ -155,7 +201,7 @@ async def polling_loop():
                 await asyncio.sleep(5)
 
         # Initialize last_seen_post_id
-        global last_seen_post_id
+        global last_seen_post_id, retro_last_seen_post_id
         try:
             data = await api_call(client, "SYNO.Chat.Post", 8, "list",
                                   {"channel_id": CHAT_CHANNEL_ID, "limit": 5})
@@ -166,9 +212,23 @@ async def polling_loop():
         except Exception as e:
             logger.warning(f"Failed to init last_seen_post_id: {e}")
 
+        # Initialize retro_last_seen_post_id
+        if RETROSPECT_CHANNEL_ID:
+            try:
+                data = await api_call(client, "SYNO.Chat.Post", 8, "list",
+                                      {"channel_id": RETROSPECT_CHANNEL_ID, "limit": 1})
+                posts = extract_posts(data)
+                if posts:
+                    retro_last_seen_post_id = max(p.get("post_id", 0) for p in posts)
+                    logger.info(f"Initialized retro_last_seen_post_id={retro_last_seen_post_id}")
+            except Exception as e:
+                logger.warning(f"Failed to init retro_last_seen_post_id: {e}")
+
         # Poll loop
         while True:
             await poll_channel(client)
+            await asyncio.sleep(0.5)  # DSM API 호출 간격
+            await poll_retrospect_channel(client)
             await asyncio.sleep(POLL_INTERVAL)
 
 
@@ -286,6 +346,8 @@ async def health():
         "status": "ok",
         "sid_active": bool(sid),
         "last_seen_post_id": last_seen_post_id,
+        "retro_last_seen_post_id": retro_last_seen_post_id,
+        "retro_channel_id": RETROSPECT_CHANNEL_ID,
         "pending_photos": {
             str(uid): info["filename"]
             for uid, info in pending_photos.items()