feat: make subscribe deletion reports durable

app/application/subscription/delete.py

@@ -98,6 +98,7 @@ class DeleteSubscribeCommand:
             candidate.event_payload,
         )
         event_key = event_payload["idempotency_key"]
+        report_key = f"{event_key}:report"
         try:
             if self._outbox:
                 await self._outbox.stage(
@@ -108,6 +109,17 @@ class DeleteSubscribeCommand:
                     ),
                     datetime.now(timezone.utc),
                 )
+                await self._outbox.stage(
+                    OutboxIntent(
+                        event_key=report_key,
+                        topic="subscribe.deleted.report",
+                        payload={
+                            "idempotency_key": report_key,
+                            "subscribe_info": dict(candidate.event_payload),
+                        },
+                    ),
+                    datetime.now(timezone.utc),
+                )
             await self._unit_of_work.commit()
         except Exception:
             await self._unit_of_work.rollback()
@@ -121,7 +133,14 @@ class DeleteSubscribeCommand:
             )
         # 上报适配器会自行白名单过滤公开字段；传完整删除前快照可保留音乐实体维度，
         # 避免 Agent 与 API 入口收敛后丢失 music_type / total_tracks。
-        self._report_deleted(dict(candidate.event_payload))
+        report_result = self._report_deleted(dict(candidate.event_payload))
+        if report_result is False:
+            raise RuntimeError("订阅删除统计上报未确认")
+        if self._outbox:
+            await self._outbox.complete_by_event_key(
+                report_key,
+                datetime.now(timezone.utc),
+            )
         return True
 
     @staticmethod