wecom-fullstack
03254bd4c7
fix(maps): 战略地图写通道乐观并发 + 画布自动保存仅脏时写
生产缺陷 cma-strategy-map-autosave-stale-overwrite（D4 批次 19 行 map_objectives 被过期快照覆写）：
- 后端 update_map: 覆写 dimensions/canvas_data 须带 base_updated_at，与服务端 updated_at 不符 → 409；
校验在任何写入之前完成（校验不过时一行都不删/不改）
- 连线写通道（POST/DELETE connections）响应补 updated_at，供前端采纳新基准、避免自伤 409
- 前端 MapCanvas: 自动保存仅在 draft + isDirty 时触发；请求体带 base_updated_at；收到 409 停自动保存不重试
- 修复 async onMounted 竞态：await 期间被卸载后其续段仍注册定时器（清理钩子先跑完、无人回收）
→ 泄漏写者永久在后台用过期快照覆写（生产 referer=/maps 仍每 30–60s 写）。加 disposed 守卫 + stopAutoSave
- 测试: backend/tests/test_map_concurrency_20261012.py（8 例，改前 5 败）；前端行为台架 11/11（改前 3/11）
任务: yanxue-20261012-cma-map-autosave-stale-overwrite-defect-fullstack
2026-10-12 11:42:56 +08:00
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