Support meeting note upload registration

docs/IM-前后端对接文档.md

@@ -2266,6 +2266,16 @@ X-MeetingIM-APIKey: <预置的普通 API Key>
 - 返回我的最终响应和会议版本，并通过 `meeting.response.updated` 实时通知参会人；重复提交同状态幂等。
 - 会议过期返回 `MEETING_CLOSED` 并只读展示；客户端本地日历写入是可选系统动作，不替代服务端响应。
 
+### 9.4.1 会议笔记
+
+**状态：新增。**
+
+- 列表：`GET /v1/im/meeting-notes?query=&cursor=&limit=20` 返回可查看会议笔记的会议列表、`note_status/file_count/permissions`。
+- 详情：`GET /v1/im/meetings/{meeting_id}/notes` 返回会议信息和 `files[]`。
+- 上传并登记：调用通用文件上传 `POST /v0/file/u/`，multipart 包含 `file=@...`、`purpose=meeting_note`、`meeting_id=<meeting_id>`、`id=<本次上传幂等ID>`，请求头按文件上传鉴权携带 `X-MeetingIM-APIKey`、`X-MeetingIM-Auth`。服务端上传成功后会立即登记会议笔记文件，响应 `ctrl.params` 包含 `url,file_id,purpose,meeting_id,note_file_id,note_file_status,version`。
+- 兼容绑定：若客户端先完成普通文件上传，也可以调用 `POST /v1/im/meetings/{meeting_id}/notes/files`，Body `{"file_id":"..."}`，并携带 `Idempotency-Key` 完成登记。
+- 替换/删除：`PUT /v1/im/meetings/{meeting_id}/notes/files/{note_file_id}`、`DELETE /v1/im/meetings/{meeting_id}/notes/files/{note_file_id}?version=n`。只有记录人/发起人按权限可上传、替换和删除。
+
 ### 9.5 日报.png
 
 <img src="images/日报.png" alt="日报" width="360">
@@ -2386,6 +2396,10 @@ X-MeetingIM-APIKey: <预置的普通 API Key>
 | `POST /v1/im/meetings/{id}/cancel` | `{"version":2,"reason":"时间冲突"}` | `{"meeting_id":"mtg_1","state":"cancelled","version":3}` |
 | `POST /v1/im/meetings/{id}/reminders` | `{}` | `{"meeting_id":"mtg_1","items":[{"user_id":"usr...","status":"sent"}]}` |
 | `PUT /v1/im/meetings/{meeting_id}/my-response` | `{"response":"accepted","version":1}` | `{"meeting_id":"mtg_1","my_response":"accepted","version":2,"response_at":"2026-08-20T09:00:00Z"}` |
+| `GET /v1/im/meeting-notes?query=&cursor=` | Query only | `{"items":[{"meeting_id":"mtg_1","title":"周会","note_status":"available","file_count":1,"permissions":{"can_upload":true,"can_download":true}}],"next_cursor":"","has_more":false}` |
+| `GET /v1/im/meetings/{meeting_id}/notes` | Path meeting ID | `{"meeting_id":"mtg_1","note_status":"available","files":[{"note_file_id":"mnote_1","file_id":"file_1","file_name":"会议纪要.pdf","mime_type":"application/pdf","permissions":{"can_download":true}}]}` |
+| `POST /v0/file/u/` 会议笔记上传并登记 | Multipart `purpose=meeting_note&meeting_id=mtg_1&id=upload_1&file=@note.pdf` | `{"ctrl":{"code":200,"params":{"url":"/v0/file/s/file_1.pdf","file_id":"file_1","purpose":"meeting_note","meeting_id":"mtg_1","note_file_id":"mnote_1","note_file_status":"active","version":1}}}` |
+| `POST /v1/im/meetings/{meeting_id}/notes/files` | Header `Idempotency-Key`；Body `{"file_id":"file_1"}` | `{"note_file_id":"mnote_1","meeting_id":"mtg_1","file_id":"file_1","status":"active","version":1}` |
 | `GET /v1/im/reports/daily?scope=mine&from=&to=&status=&cursor=` | Query only | `{"items":[{"report_id":"dr_1","report_date":"2026-08-20","content_short":"今日完成联调和问题回归...","status":"draft","draft_updated_at":"2026-08-20T09:00:00Z","submitted_at":null,"read_state":"unread"}],"next_cursor":"","permissions":{"can_create":true,"makeup_allowed_days":7}}` |
 | `GET /v1/im/reports/daily?scope=managed&date=&status=submitted\|missing&department_id=&cursor=` | Query only | `{"items":[{"report_id":"dr_1","author":{"user_id":"usr...","display_name":"张三"},"report_date":"2026-08-20","content_short":"完成日报提交和项目同步...","status":"submitted","submitted_at":"2026-08-20T09:00:00Z","read_state":"unread"}],"next_cursor":"","permissions":{"can_remind_unsubmitted":true,"can_view_managed":true}}` |
 | `POST /v1/im/reports/daily` | `{"report_date":"2026-08-20"}` | `{"report_id":"dr_1","report_date":"2026-08-20","content":"","attachments":[],"status":"draft","version":1,"permissions":{"can_edit":true,"can_submit":true,"can_view":true}}` |