chore: docs 结构整改 + compose 双目录对齐（合并重建提交）

本提交为 .git 对象库损坏后的重建提交，内容等价于原先三个本地提交（5e2fd4c2 / 57a53c98 / 5d7e1873）的累积结果，未做任何额外改动。一、docs 结构整改（整改 #14）根因：重构时新结构为 untracked 文件，执行 git stash（未带 -u）未纳入，随后 git reset 拉回 HEAD 旧 tracked 树，导致旧树复活、新旧两棵目录树并存于 docs/，共 791 文件、双分类体系冲突。修复动作： - b2 同名异主题文件改名迁移保全 9 个 - C 类 39 个孤立文件按主题正确归类 - A/B1 类 222 个重复文件删除（新结构已有内容副本） - 9 个旧独有空目录删除 - 270 处内部引用按 verified 映射改写 - 整改记录 #14 登记于 04-运维文档/部署运维结果：docs 791 → 569 文件，顶层仅规范 8 类 + 治理文件，单树恢复。残留：约 20 处指向从未存在文件的陈旧死链，归入独立文档卫生任务。二、compose 双目录对齐（消除踩坑 A） - docker-compose.yml：nginx 前端挂载全部由根目录 frontend-*/dist 改为 src/frontend-*/dist（h5 / agent / admin / terminal） - docker-compose.dev.yml：dev 服务 build context 与卷同步改 src/ - 效果：本地 docker compose up 不再把根目录 stale dist 挂回，与线上一致，分叉隐患消除（已 docker compose config 校验通过）防复发铁律： - 重构须提交；仓库修复须 git stash -u 或先 commit - 新结构须 git add 并提交，避免再次 untracked 复活 - H5 改动只动 src/frontend-h5/，禁改根目录遗留 frontend-*/
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+# 代办事项时序图
+
+## 1. 代办列表查询流程
+
+```mermaid
+sequenceDiagram
+    participant FE as 前端 TodoPanel
+    participant API as GET /api/todo-items
+    participant Agg as TodoAggregatorService
+    participant Cache as Redis Cache
+    participant Appr as ApprovalTodoService
+    participant Wecom as 企微审批API
+    participant ITSM as ITSMService
+    participant ITSM_API as ITSM OpenAPI
+
+    FE->>API: GET /api/todo-items?type=approval
+    API->>Agg: get_todo_list(agent_userid, type="approval")
+    Agg->>Cache: GET todo:cache:{userid}:approval
+    alt 缓存命中
+        Cache-->>Agg: cached_data
+        Agg-->>API: {items, total, cached:true}
+    else 缓存未命中
+        Agg->>Agg: asyncio.gather(approval_svc, itsm_svc, return_exceptions=True)
+        par 并行查询审批
+            Agg->>Appr: get_todo_list()
+            Appr->>Wecom: getapprovaldata(sp_status=1, templates=18)
+            Wecom-->>Appr: sp_no_list
+            Appr->>Appr: asyncio.gather(getapprovaldetail × N)
+            loop 每个sp_no并发获取详情
+                Appr->>Wecom: getapprovaldetail(sp_no)
+                Wecom-->>Appr: approval_detail
+            end
+            Appr->>Appr: _filter_by_current_approver(details)
+            Appr->>Appr: _map_to_todo_item(detail)
+            Appr-->>Agg: List[TodoItemData]
+        and 并行查询工单
+            Agg->>ITSM: get_todo_list()
+            Note over ITSM: ITSM列表API待实现<br/>当前返回空列表+日志告警
+            ITSM-->>Agg: List[TodoItemData] (空)
+        end
+        Agg->>Agg: merge + sort by priority
+        Agg->>Cache: SET todo:cache:{userid}:approval TTL=45s
+        Agg-->>API: {items, total, cached:false}
+    end
+    API-->>FE: {code:0, data:{items, total}}
+```
+
+## 2. 代办详情查询流程
+
+```mermaid
+sequenceDiagram
+    participant FE as 前端 TaskDetailView
+    participant API as GET /api/todo-items/{id}
+    participant Agg as TodoAggregatorService
+    participant Appr as ApprovalTodoService
+    participant ITSM as ITSMService
+    participant Wecom as 企微审批API
+    participant ITSM_API as ITSM OpenAPI
+
+    FE->>API: GET /api/todo-items/approval:{sp_no}
+    API->>Agg: get_todo_detail(agent_userid, item_id, todo_type="approval")
+    
+    alt type == "approval"
+        Agg->>Appr: get_todo_detail(sp_no)
+        Appr->>Wecom: getapprovaldetail(sp_no)
+        Wecom-->>Appr: approval_detail
+        Appr->>Appr: _map_to_todo_item(detail)
+        Appr-->>Agg: TodoItemData
+    else type == "ticket"
+        Agg->>ITSM: get_todo_detail(workitem_id)
+        ITSM->>ITSM_API: POST /openapi/v1/process/workitem/detail
+        ITSM_API-->>ITSM: {code:20000, data:{workitem_detail}}
+        ITSM->>ITSM: _map_to_todo_item(detail)
+        ITSM-->>Agg: TodoItemData
+    end
+    
+    Agg-->>API: TodoItemData
+    API-->>FE: {code:0, data:{item}}
+```
+
+## 3. ITSM 签名认证流程
+
+```mermaid
+sequenceDiagram
+    participant Svc as ITSMService
+    participant Signer as ITSMSigner
+    participant API as ITSM OpenAPI
+
+    Svc->>Svc: timestamp = str(int(time.time()*1000))
+    Svc->>Signer: compute_signature(app_id, timestamp, app_secret, biz_data)
+    Signer->>Signer: sign_params = {appId, timestamp, appSecret, bizData}
+    Signer->>Signer: sort by key ASC
+    Signer->>Signer: concat all values → canonicalized_str
+    Signer->>Signer: quote_plus(canonicalized_str)
+    Signer->>Signer: sha1(q2).hexdigest().upper()
+    Signer-->>Svc: sign_str
+    Svc->>API: POST url, headers={appId, timestamp, sign}, json=body
+    API-->>Svc: {code:20000, data:{...}}
+```