diff --git a/.trellis/tasks/08-10-pwa-cross-version-cache-upgrade-validation/check.jsonl b/.trellis/tasks/archive/2026-08/08-10-pwa-cross-version-cache-upgrade-validation/check.jsonl
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rename from .trellis/tasks/08-10-pwa-cross-version-cache-upgrade-validation/check.jsonl
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diff --git a/.trellis/tasks/08-10-pwa-cross-version-cache-upgrade-validation/design.md b/.trellis/tasks/archive/2026-08/08-10-pwa-cross-version-cache-upgrade-validation/design.md
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rename from .trellis/tasks/08-10-pwa-cross-version-cache-upgrade-validation/design.md
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diff --git a/.trellis/tasks/08-10-pwa-cross-version-cache-upgrade-validation/implement.jsonl b/.trellis/tasks/archive/2026-08/08-10-pwa-cross-version-cache-upgrade-validation/implement.jsonl
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diff --git a/.trellis/tasks/08-10-pwa-cross-version-cache-upgrade-validation/implement.md b/.trellis/tasks/archive/2026-08/08-10-pwa-cross-version-cache-upgrade-validation/implement.md
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diff --git a/.trellis/tasks/08-10-pwa-cross-version-cache-upgrade-validation/prd.md b/.trellis/tasks/archive/2026-08/08-10-pwa-cross-version-cache-upgrade-validation/prd.md
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diff --git a/.trellis/tasks/08-10-pwa-cross-version-cache-upgrade-validation/research/current-evidence.md b/.trellis/tasks/archive/2026-08/08-10-pwa-cross-version-cache-upgrade-validation/research/current-evidence.md
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diff --git a/.trellis/tasks/08-10-pwa-cross-version-cache-upgrade-validation/research/verification-ledger.md b/.trellis/tasks/archive/2026-08/08-10-pwa-cross-version-cache-upgrade-validation/research/verification-ledger.md
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diff --git a/.trellis/tasks/08-10-pwa-cross-version-cache-upgrade-validation/task.json b/.trellis/tasks/archive/2026-08/08-10-pwa-cross-version-cache-upgrade-validation/task.json
similarity index 96%
rename from .trellis/tasks/08-10-pwa-cross-version-cache-upgrade-validation/task.json
rename to .trellis/tasks/archive/2026-08/08-10-pwa-cross-version-cache-upgrade-validation/task.json
index af0ce8cc..8df42d0d 100644
--- a/.trellis/tasks/08-10-pwa-cross-version-cache-upgrade-validation/task.json
+++ b/.trellis/tasks/archive/2026-08/08-10-pwa-cross-version-cache-upgrade-validation/task.json
@@ -3,7 +3,7 @@
   "name": "pwa-cross-version-cache-upgrade-validation",
   "title": "PWA 跨版本缓存升级验证",
   "description": "在同一 loopback origin 与同一浏览器上下文中，让旧 production build 的真实 Service Worker 先取得控制权并建立缓存，再原位切换新 build，验证重访后无需强刷即可收敛到新 shell、保持会话且不残留旧 chunk。",
-  "status": "in_progress",
+  "status": "completed",
   "dev_type": null,
   "scope": "client PWA production-build cross-version upgrade test harness and local QA runner; product PWA runtime remains read-only unless a separate finding task is approved",
   "package": null,
@@ -11,7 +11,7 @@
   "creator": "shunli",
   "assignee": "shunli",
   "createdAt": "2026-08-10",
-  "completedAt": null,
+  "completedAt": "2026-08-10",
   "branch": null,
   "base_branch": "main",
   "worktree_path": null,
@@ -30,4 +30,4 @@
   ],
   "notes": "本地同 origin、同 BrowserContext 的 production PWA A→B 跨版本 witness 三次 PASS；A controller/precache、B active worker 指纹/document/chunk、会话保持与旧缓存清理均有联合证据，未连接生产或修改产品 PWA runtime。",
   "meta": {}
-}
+}
\ No newline at end of file