diff --git a/.trellis/tasks/08-11-internal-oa-finance-backoffice-positioning-and-navigation-reduction/check.jsonl b/.trellis/tasks/archive/2026-08/08-11-internal-oa-finance-backoffice-positioning-and-navigation-reduction/check.jsonl
similarity index 100%
rename from .trellis/tasks/08-11-internal-oa-finance-backoffice-positioning-and-navigation-reduction/check.jsonl
rename to .trellis/tasks/archive/2026-08/08-11-internal-oa-finance-backoffice-positioning-and-navigation-reduction/check.jsonl
diff --git a/.trellis/tasks/08-11-internal-oa-finance-backoffice-positioning-and-navigation-reduction/design.md b/.trellis/tasks/archive/2026-08/08-11-internal-oa-finance-backoffice-positioning-and-navigation-reduction/design.md
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rename from .trellis/tasks/08-11-internal-oa-finance-backoffice-positioning-and-navigation-reduction/design.md
rename to .trellis/tasks/archive/2026-08/08-11-internal-oa-finance-backoffice-positioning-and-navigation-reduction/design.md
diff --git a/.trellis/tasks/08-11-internal-oa-finance-backoffice-positioning-and-navigation-reduction/implement.jsonl b/.trellis/tasks/archive/2026-08/08-11-internal-oa-finance-backoffice-positioning-and-navigation-reduction/implement.jsonl
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rename from .trellis/tasks/08-11-internal-oa-finance-backoffice-positioning-and-navigation-reduction/implement.jsonl
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diff --git a/.trellis/tasks/08-11-internal-oa-finance-backoffice-positioning-and-navigation-reduction/implement.md b/.trellis/tasks/archive/2026-08/08-11-internal-oa-finance-backoffice-positioning-and-navigation-reduction/implement.md
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rename from .trellis/tasks/08-11-internal-oa-finance-backoffice-positioning-and-navigation-reduction/implement.md
rename to .trellis/tasks/archive/2026-08/08-11-internal-oa-finance-backoffice-positioning-and-navigation-reduction/implement.md
diff --git a/.trellis/tasks/08-11-internal-oa-finance-backoffice-positioning-and-navigation-reduction/prd.md b/.trellis/tasks/archive/2026-08/08-11-internal-oa-finance-backoffice-positioning-and-navigation-reduction/prd.md
similarity index 100%
rename from .trellis/tasks/08-11-internal-oa-finance-backoffice-positioning-and-navigation-reduction/prd.md
rename to .trellis/tasks/archive/2026-08/08-11-internal-oa-finance-backoffice-positioning-and-navigation-reduction/prd.md
diff --git a/.trellis/tasks/08-11-internal-oa-finance-backoffice-positioning-and-navigation-reduction/task.json b/.trellis/tasks/archive/2026-08/08-11-internal-oa-finance-backoffice-positioning-and-navigation-reduction/task.json
similarity index 97%
rename from .trellis/tasks/08-11-internal-oa-finance-backoffice-positioning-and-navigation-reduction/task.json
rename to .trellis/tasks/archive/2026-08/08-11-internal-oa-finance-backoffice-positioning-and-navigation-reduction/task.json
index 07e42fef..30a922fe 100644
--- a/.trellis/tasks/08-11-internal-oa-finance-backoffice-positioning-and-navigation-reduction/task.json
+++ b/.trellis/tasks/archive/2026-08/08-11-internal-oa-finance-backoffice-positioning-and-navigation-reduction/task.json
@@ -3,7 +3,7 @@
   "name": "internal-oa-finance-backoffice-positioning-and-navigation-reduction",
   "title": "财务后台定位与主导航减法",
   "description": "固化 OA 为财务与低频台账后台的正式定位，并在另获生产批准后使用既有 batch feature flag 能力可逆关闭公告、普通待办和周报；项目须先通过本地报销关联回归。产品运行代码零改动、无部署；恢复后仅补本地 QA 状态机与测试，不实现二级导航或模块退役。",
-  "status": "in_progress",
+  "status": "completed",
   "dev_type": "configuration",
   "scope": "task-docs,docs,spec,scripts-qa-local-harness,production-feature-flags",
   "package": "hyb-oa",
@@ -11,7 +11,7 @@
   "creator": "shunli",
   "assignee": "shunli",
   "createdAt": "2026-08-11",
-  "completedAt": null,
+  "completedAt": "2026-08-13",
   "branch": null,
   "base_branch": "main",
   "worktree_path": null,
@@ -30,4 +30,4 @@
   ],
   "notes": "生命周期关闭：财务与低频台账后台定位、项目 flag 排除、QA 不确定性状态机和生产证据已完成。两轮三 flag 前向 batch 均成功，分别因观察器和 POST witness 假失败恢复；生产安全终态为三项 force_on@51、全局审计 13、各目标 changelog 4、业务 mutation 0、窗口 OPEN/0。导航减法未保持生效，AC5-AC7 未完成。用户决定停止第三次尝试：当前极低真人采用下收益不支持继续投入；仅在多名真人持续使用并出现导航摩擦时重新评估。下一步是管理要求下一轮真实报销走 OA，不创建即时工程任务。",
   "meta": {}
-}
+}
\ No newline at end of file