让成交卡等报价文件真正发出后再出现，并收紧 PDF 顶部留白，避免抬头被裁或空一截。

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

inquiry-agent/agent/channel/pg_store.py

@@ -190,6 +190,26 @@ class PostgresMessageStore:
             logger.exception("pg outbox 入队失败")
             raise
 
+    def has_outbound_dedupe(self, prefix: str) -> bool:
+        """去重键是否已出过站（前缀匹配）。跨进程看成交卡/文件是否已发。"""
+        head = (prefix or "").strip()
+        if not head:
+            return False
+        try:
+            with connect_psycopg(self._dsn) as conn:
+                row = conn.execute(
+                    """
+                    SELECT 1 FROM agent_outbox
+                    WHERE dedupe_key LIKE %s
+                    LIMIT 1
+                    """,
+                    (head + "%",),
+                ).fetchone()
+            return bool(row)
+        except Exception:
+            logger.exception("查 outbox 去重前缀失败 prefix=%s", head)
+            return False
+
     def claim_outbound(self) -> Optional[OutboxItem]:
         timeout = int(self._claim_timeout)
         with connect_psycopg(self._dsn) as conn:
@@ -203,7 +223,7 @@ class PostgresMessageStore:
                             AND claimed_at IS NOT NULL
                             AND claimed_at < NOW() - (%s || ' seconds')::interval
                        )
-                    ORDER BY created_at
+                    ORDER BY created_at ASC, id ASC
                     FOR UPDATE SKIP LOCKED
                     LIMIT 1
                 )
@@ -294,6 +314,36 @@ class PostgresMessageStore:
     def wait_outbox(self, timeout: float = 1.0) -> None:
         self._outbox_event.wait(timeout=timeout)
 
+    def wait_outbound_done(self, item_id: str, timeout_sec: float = 12.0) -> bool:
+        """
+        等到指定出站已发送完成或失败。
+
+        查价前先等询价确认发出，避免暂无报价卡抢先。只等这一条。
+        """
+        raw = (item_id or "").strip()
+        if not raw:
+            return False
+        started = time.time()
+        deadline = started + max(0.1, float(timeout_sec))
+        saw_claim = False
+        while time.time() < deadline:
+            with connect_psycopg(self._dsn) as conn:
+                row = conn.execute(
+                    "SELECT state FROM agent_outbox WHERE id = %s",
+                    (raw,),
+                ).fetchone()
+            state = str(row[0] or "") if row else ""
+            if state in {"done", "failed"}:
+                return state == "done"
+            if state == "claimed":
+                saw_claim = True
+            if not saw_claim and state == "pending" and time.time() - started >= 0.4:
+                return True
+            if not state and time.time() - started >= 0.3:
+                return True
+            self._outbox_event.wait(0.05)
+        return False
+
     def stats(self) -> dict[str, Any]:
         with connect_psycopg(self._dsn) as conn:
             inbox = conn.execute(