fix(alerts): surface legacy hitl backlog

apps/api/src/services/approval_db.py

@@ -110,10 +110,10 @@ def approval_record_to_request(record: ApprovalRecord) -> ApprovalRequest:
         hit_count=record.hit_count,
         last_seen_at=record.last_seen_at,
         # B3 fix 2026-04-24 ogt + Claude Sonnet 4.6: 補回 DB 欄位（人工審核路徑讀回必要）
-        # incident_id / matched_playbook_id 在 ApprovalRequest 基礎模型中有定義
-        # telegram_message_id / telegram_chat_id 只在 DB model，不在 Pydantic ApprovalRequest
         incident_id=getattr(record, "incident_id", None),
         matched_playbook_id=getattr(record, "matched_playbook_id", None),
+        telegram_message_id=getattr(record, "telegram_message_id", None),
+        telegram_chat_id=getattr(record, "telegram_chat_id", None),
     )