agent-exec transport a41de1816057eb4de14b0175a36c9c68/dfebc3695180

scripts/evidence.py

@@ -322,12 +322,17 @@ def validate_precheck(receipt, purpose="start"):
             validate_local_scope(receipt, current, context)
 
 
-def validate_local_scope(receipt, current, context):
-    """LOCAL_READY continues one active registered task; it remains SELF local-work evidence only."""
+def require_active_task(root):
+    """Closed, archived or abandoned cards cannot authorize local continuation."""
     card = find_card()
     status = re.search(r"；状态：\s*([^；\s][^；\n]*)", card.read_text(encoding="utf-8"))
-    if card.resolve().parent != context["root"] / ".task" or not status or status.group(1).startswith("已"):
+    if card.resolve().parent != root / ".task" or not status or status.group(1).startswith("已"):
         raise EvidenceError("Local continuation requires an active registered task")
+
+
+def validate_local_scope(receipt, current, context):
+    """LOCAL_READY continues one active registered task; it remains SELF local-work evidence only."""
+    require_active_task(context["root"])
     states = TASK_STATE.findall(receipt["output"])
     if len(states) != 1 or Path(states[0][0]) != context["root"] or states[0][1] != context["r0"]:
         raise EvidenceError("Precheck belongs to a different task identity or initial baseline")
@@ -467,8 +472,10 @@ def main():
     try:
         if os.environ.get("SRC", "SELF") not in ("", "SELF"):
             raise EvidenceError("Local evidence is SELF; GATE/REPLAY require external execution identity")
-        if sys.argv[1:] == ["--local-context"]:
+        if sys.argv[1:] in (["--local-context"], ["--local-context", "--active"]):
             context = task_context(require_target=False)
+            if sys.argv[2:]:
+                require_active_task(context["root"])
             print("[task-state] registered=" + str(context["root"]) + " initial_base=" + context["r0"])
             return 0
         if sys.argv[1:]:

scripts/task.sh

@@ -18,6 +18,15 @@ fetch_target() {
   git rev-parse --verify "refs/remotes/origin/${TARGET_BRANCH}^{commit}" >/dev/null \
     || { echo "[verdict] REMOTE_UNVERIFIED — target commit missing" >&2; return 6; }
 }
+target_rewound() { # 0 仅当 origin 通告的目标提交本地可用且不是缓存 origin/<target> 的后代；不可达或无法比较返回 1
+  local cached advertised rc=0
+  cached=$(git rev-parse -q --verify "refs/remotes/origin/${TARGET_BRANCH}^{commit}" 2>/dev/null) || return 1
+  advertised=$(git ls-remote origin "refs/heads/${TARGET_BRANCH}" 2>/dev/null \
+    | awk -v ref="refs/heads/${TARGET_BRANCH}" '$2 == ref && !seen { print $1; seen = 1 }') || return 1
+  [ -n "$advertised" ] && git cat-file -e "${advertised}^{commit}" 2>/dev/null || return 1
+  git merge-base --is-ancestor "$cached" "$advertised" 2>/dev/null || rc=$?
+  [ "$rc" -eq 1 ]
+}
 check_worktree() { python3 "${SCRIPT_DIR}/check-worktree.py" "$1"; }
 main_worktree_root() { git worktree list --porcelain -z | python3 -c 'import os,sys; print(os.fsdecode(sys.stdin.buffer.read().split(bytes([0]),1)[0][9:]))'; }
 work_mode() {
@@ -140,7 +149,11 @@ cmd_precheck() {
     exit 3
   fi
   if [ "$mode" = local ]; then
-    python3 "${SCRIPT_DIR}/evidence.py" --local-context || return 2
+    python3 "${SCRIPT_DIR}/evidence.py" --local-context --active || return 2
+    if [ "$remote_fresh" -eq 0 ] && target_rewound; then
+      echo "[verdict] REMOTE_UNVERIFIED — origin/${TARGET_BRANCH} rewound or diverged from the cached target; preserve local work and reconcile the target history"
+      return 6
+    fi
     [ "$remote_fresh" -eq 1 ] || echo "[remote-freshness] unavailable — LOCAL_READY rests on local task context only"
     echo "[verdict] LOCAL_READY — existing task may continue authorized local work; final delivery still requires latest-target sync and checks"
     return 0