修复自动备份运行身份漂移（07-28-automatic-backup-runtime-identity-failure）

.trellis/tasks/07-28-automatic-backup-runtime-identity-failure/task.json

@@ -0,0 +1,26 @@
+{
+  "id": "automatic-backup-runtime-identity-failure",
+  "name": "automatic-backup-runtime-identity-failure",
+  "title": "自动备份运行身份失败",
+  "description": "诊断 02:30 自动备份 phase_runtime_identity_failed 告警，确认影响范围、根因与安全修复路径。",
+  "status": "in_progress",
+  "dev_type": "operations",
+  "scope": "deployment",
+  "package": "hyb-oa",
+  "priority": "P2",
+  "creator": "shunli",
+  "assignee": "shunli",
+  "createdAt": "2026-07-28",
+  "completedAt": null,
+  "branch": null,
+  "base_branch": "main",
+  "worktree_path": null,
+  "commit": null,
+  "pr_url": null,
+  "subtasks": [],
+  "children": [],
+  "parent": null,
+  "relatedFiles": [],
+  "notes": "02:30 daily 与 07:10 watchdog 均由自动备份 unit 的旧附件宿主目录漂移触发，其他运行身份正常。已用现有安装器刷新 units，三个 timer 与全部运行身份通过；手工补跑、ARM finalize、成功状态、单条群恢复通知和关联监控复核通过，临时快照已删除。73 项合同及治理、敏感、流程、文档和格式门禁无错误，全部验收项闭环。",
+  "meta": {}
+}