落地私聊空运询价与TMS报价回填，按后台模板出单。

查到价后把币种、单位、数量、单价、备注写入报价单，避免销售只看到光秃秃的金额。

Co-authored-by: Cursor <cursoragent@cursor.com>

inquiry-agent/agent/channel/pg_store.py

@@ -157,6 +157,7 @@ class PostgresMessageStore:
         touser: str,
         content: str,
         dedupe_key: str = "",
+        payload: Optional[dict[str, Any]] = None,
     ) -> tuple[bool, str]:
         if not touser or not content:
             return False, "invalid_outbox"
@@ -167,9 +168,15 @@ class PostgresMessageStore:
                     """
                     INSERT INTO agent_outbox (
                         id, dedupe_key, touser, content, payload, state
-                    ) VALUES (%s, %s, %s, %s, '{}'::jsonb, 'pending')
+                    ) VALUES (%s, %s, %s, %s, %s::jsonb, 'pending')
                     """,
-                    (item_id, dedupe_key or "", touser, content),
+                    (
+                        item_id,
+                        dedupe_key or "",
+                        touser,
+                        content,
+                        json.dumps(dict(payload or {}), ensure_ascii=False),
+                    ),
                 )
                 conn.commit()
             self._outbox_event.set()
@@ -209,7 +216,7 @@ class PostgresMessageStore:
                 FROM cte
                 WHERE o.id = cte.id
                 RETURNING o.id, o.touser, o.content, o.attempts, o.last_error,
-                          o.created_at, o.dedupe_key, o.claimed_at
+                          o.created_at, o.dedupe_key, o.claimed_at, o.payload
                 """,
                 (str(timeout), self._worker_id),
             ).fetchone()
@@ -221,6 +228,12 @@ class PostgresMessageStore:
         created_ts = created.timestamp() if hasattr(created, "timestamp") else time.time()
         claimed = row[7]
         claimed_ts = claimed.timestamp() if hasattr(claimed, "timestamp") else time.time()
+        raw_payload = row[8] if len(row) > 8 else {}
+        if isinstance(raw_payload, str):
+            try:
+                raw_payload = json.loads(raw_payload)
+            except json.JSONDecodeError:
+                raw_payload = {}
         return OutboxItem(
             id=str(row[0]),
             touser=str(row[1]),
@@ -231,6 +244,7 @@ class PostgresMessageStore:
             last_error=str(row[4] or ""),
             created_at=created_ts,
             dedupe_key=str(row[6] or ""),
+            payload=dict(raw_payload or {}),
         )
 
     def complete_outbound(