diff --git a/.archive-w1d1 b/.archive-w1d1
deleted file mode 160000
index 39b203b..0000000
--- a/.archive-w1d1
+++ /dev/null
@@ -1 +0,0 @@
-Subproject commit 39b203bf347c1de425a2d629da3abb4982497dd1
diff --git a/.ciw b/.ciw
deleted file mode 160000
index ff2a87d..0000000
--- a/.ciw
+++ /dev/null
@@ -1 +0,0 @@
-Subproject commit ff2a87d1266b9ddbdc7b1a6a80ceadc4464216ae
diff --git a/.gitignore b/.gitignore
index c1a5619..f4f100e 100644
--- a/.gitignore
+++ b/.gitignore
@@ -1,3 +1,9 @@
 # Python 编译产物（构建缓存不入库——.#230/#336/#338 曾误提交）
 __pycache__/
 *.pyc
+
+# 工作区内的独立克隆仓（以 gitlink 形式误提交会弄坏 CI checkout——
+# 2026-08-29 9d1f180 实例：fatal: No url found for submodule path）
+.archive-w1d1/
+.ciw/
+env-defs/
diff --git a/env-defs b/env-defs
deleted file mode 160000
index b6fa34c..0000000
--- a/env-defs
+++ /dev/null
@@ -1 +0,0 @@
-Subproject commit b6fa34c496a4c601512f27796426a71a05c18da4
diff --git a/governance/evidence-query.sh b/governance/evidence-query.sh
index 54ce103..d8e4d54 100644
--- a/governance/evidence-query.sh
+++ b/governance/evidence-query.sh
@@ -60,7 +60,8 @@ for ent in json.load(open(sys.argv[1], encoding="utf-8")):
             base64.b64decode(ent["content"]).decode("utf-8"))
 PYEOF
 else
-  if ! grep -qiE 'not found|no ref found' "$TMP/api.err" 2>/dev/null; then
+  # 同 fetch_file：按 "HTTP 404" 状态码判源缺席（报文变体猜谜必漏——见上方注释）
+  if ! grep -q 'HTTP 404' "$TMP/api.err" 2>/dev/null; then
     echo "FATAL: metering-ledger 目录拉取失败：" >&2; cat "$TMP/api.err" >&2; exit 2
   fi
 fi
diff --git a/governance/tests/test-evidence-shadow.sh b/governance/tests/test-evidence-shadow.sh
index 1312fc1..7dc1f63 100644
--- a/governance/tests/test-evidence-shadow.sh
+++ b/governance/tests/test-evidence-shadow.sh
@@ -152,6 +152,9 @@ case "$url" in
     if [[ "${GH_STUB_BUTLER_MISSING:-}" == "2" ]]; then
       echo 'gh: No ref found for "butler-ledger" in repo Cloudbird-Software/.github (HTTP 404)' >&2; exit 1
     fi
+    if [[ "${GH_STUB_BUTLER_MISSING:-}" == "3" ]]; then
+      echo 'gh: No commit found for the ref butler-ledger (HTTP 404)' >&2; exit 1
+    fi
     cat "$F/butler.json" ;;
   *) echo "gh-stub: 意外 URL $url" >&2; exit 1 ;;
 esac
@@ -182,6 +185,12 @@ ROUT=$(GH="$GHSTUB" GH_STUB_FIXTURES="$TMP/fixtures" GH_TOKEN=stub GH_STUB_BUTLE
   bash "$DIR/governance/evidence-query.sh" 2>"$TMP/r.err"); RRC=$?
 RN=$(nlines "$ROUT")
 [[ $RRC -eq 0 && "$RN" -eq 4 ]] && pass "源缺席（No ref found 分支未建）→ 跳过非红（4 条）" || fail "分支未建误红（rc=$RRC 行=$RN）"
+# 源缺席（404 第三报文形态——分支缺失 "No commit found for the ref"，本地实测
+# 真实报文）：按 HTTP 404 状态码判定后同跳过非红
+COUT2=$(GH="$GHSTUB" GH_STUB_FIXTURES="$TMP/fixtures" GH_TOKEN=stub GH_STUB_BUTLER_MISSING=3 \
+  bash "$DIR/governance/evidence-query.sh" 2>"$TMP/c2.err"); C2RC=$?
+C2N=$(nlines "$COUT2")
+[[ $C2RC -eq 0 && "$C2N" -eq 4 ]] && pass "源缺席（No commit found for the ref）→ 跳过非红（4 条）" || fail "分支缺失误红（rc=$C2RC 行=$C2N）"
 # 负向：任一源链断 → exit 3 且 stdout 零输出（不可信数据不出结果）
 python3 - "$TMP/fixtures" <<'PYEOF'
 import base64, json, sys