diff --git a/.task/feature-evidence-driven-gates.md b/.task/feature-evidence-driven-gates.md
index 733da3b8..f4523b67 100644
--- a/.task/feature-evidence-driven-gates.md
+++ b/.task/feature-evidence-driven-gates.md
@@ -104,3 +104,25 @@ make[1]: Entering directory '/home/weichen/projects/Agent-System-Dev-wt-feature-
 [facts-verify] total=4 pass=4 fail=0
 make[1]: Leaving directory '/home/weichen/projects/Agent-System-Dev-wt-feature-evidence-driven-gates'
 ```
+| 2026-10-05T10:49:32Z | `make test` | 6518f6ed0a | 0 | SELF | 751ae7dccd018ce7 |
+
+<!-- evidence:run 2026-10-05T10:49:32Z -->
+```
+$ make test
+[exit 0 | HEAD 6518f6ed0a | sha256:751ae7dccd018ce7] 输出尾部 15 行：
+ ✓ test/card-anchor.test.tsx (4 tests) 91ms
+ ✓ test/file-preview.test.tsx (9 tests) 77ms
+ ✓ test/inline-confirm.test.tsx (7 tests) 94ms
+ ✓ test/capability.test.tsx (14 tests) 145ms
+
+ Test Files  14 passed (14)
+      Tests  103 passed (103)
+   Start at  10:50:04
+   Duration  612ms (transform 373ms, setup 0ms, import 1.36s, tests 874ms, environment 3.22s)
+
+knip unused exports 55 <= 55
+cd deps/agent-command && go vet ./... && go test -count=1 ./...
+ok  	agent-command	0.002s
+ok  	agent-command/conformance	0.002s
+make[1]: Leaving directory '/home/weichen/projects/Agent-System-Dev-wt-feature-evidence-driven-gates'
+```
diff --git a/AGENTS.md b/AGENTS.md
index 3860b148..b8165ff1 100644
--- a/AGENTS.md
+++ b/AGENTS.md
@@ -24,8 +24,8 @@
   允许的堆叠例外）：任务卡显式记录父任务与父 PR；子分支命名 `<type>/<父slug>-<子题>`，
   不嵌 SHA；合入顺序固定父→子；父合入后子分支须 `make task-sync` 并入最新 main 并把 PR
   base 改回 main，方可声明可合入（分支保护要求 head 含 origin/main，未同步必被拦）。
-- **验收、请求审核、合入前**各运行一次 `make task-sync`；完成声明附 precheck、task-sync、
-  测试三段输出。
+- **验收、请求审核、合入前**各运行一次 `make task-sync`；完成声明的 precheck、task-sync、
+  测试三段输出由 `make evidence` 写入任务卡（见「证据与验证门禁」），不手抄。
 - 合入后**在 worktree 内**运行 `make task-finish` 回收 worktree 与分支（脚本会把
   当前目录当 worktree 回收——在主检出运行会误删主检出，已加防护）；放弃未合入
   工作用 `make task-finish ABANDON="--abandon <原因>"` 并记录原因。
diff --git a/scripts/task.sh b/scripts/task.sh
index 073a4f60..8a31e3ab 100755
--- a/scripts/task.sh
+++ b/scripts/task.sh
@@ -189,14 +189,16 @@ cmd_sync() {
     printf '| 同步前验收 | %s | %s | %s |\n' "$base" "$head" "$(date -u +%FT%TZ)" >> "$card"
     git add "$card"
     git commit -q -m "Record the sync checkpoint" || true
-    # [evidence] 同步改变了被测对象：卡片证据表中旧 HEAD 的行自动失效，关键检查须重跑。
-    local eh stale_ev="" short_head
+    # [evidence] 同步改变了被测对象：卡片证据表中旧 HEAD 的行，其后若有非 .task 变更则失效须重跑。
+    local eh stale_ev="" short_head changed
     short_head=$(echo "$head" | cut -c1-10)
     while IFS='|' read -r _ _ _ eh _ _ _; do
       eh=$(echo "$eh" | tr -d ' `')
-      [ -n "$eh" ] && [ "$eh" != "$short_head" ] && stale_ev="$stale_ev $eh"
+      { [ -n "$eh" ] && [ "$eh" != "$short_head" ]; } || continue
+      changed=$(git diff --name-only "${eh}" HEAD -- . ':(exclude).task' 2>/dev/null | head -1)
+      [ -n "$changed" ] && stale_ev="$stale_ev ${eh}"
     done < <(grep -E '^\| [0-9]{4}-[0-9]{2}-[0-9]{2}T[^|]*\|' "$card" 2>/dev/null || true)
-    [ -n "$stale_ev" ] && echo "[evidence] WARN 证据表含旧被测 HEAD:$(echo $stale_ev | tr ' ' '\n' | sort -u | tr '\n' ' ')（≠ 当前 $short_head）——同步后关键检查须重跑并以 make evidence 重新写入"
+    [ -n "$stale_ev" ] && echo "[evidence] WARN 证据表被测 HEAD 落后且其后有非卡片变更:$(echo $stale_ev | tr ' ' '\n' | sort -u | tr '\n' ' ')（当前 $short_head）——关键检查须重跑并以 make evidence 重新写入"
   else
     echo "[warn] 找不到分支 ${branch} 的任务卡，同步记录未写入" >&2
   fi