diff --git a/README.md b/README.md
index e61ff4c..6af713c 100644
--- a/README.md
+++ b/README.md
@@ -111,6 +111,22 @@ domain/(实体+值对象+端口 Protocol) → application/services → infrastru
 
 ---
 
+## Claude 署名策略（每个生成项目自带）
+
+控制提交信息里是否包含 `Co-Authored-By: Claude` 署名。**默认 off（不含）**，由 commit-msg 门禁每次提交强制执行。
+
+```bash
+./scripts/claude-attribution.sh status   # 查看当前策略
+./scripts/claude-attribution.sh off      # 不含署名（默认）
+./scripts/claude-attribution.sh on       # 保留署名
+```
+
+- 策略存于 `git config scaffold.includeClaude`（项目级），`_tasks` 生成时默认设为 `false`
+- **门禁**：`check-claude-attribution.sh` 挂在 pre-commit 的 commit-msg 阶段——策略 off 时自动剥除任何 Claude 署名行并提示，on 时保留
+- 即使有人/AI 在提交里带了署名，off 策略下也会被自动清掉，保证不入库
+
+---
+
 ## 架构基座（每个生成项目自带，开箱即跑）
 
 不加任何功能，生成的项目第一天就有**完整分层结构 + 与业务无关的横切基础设施**，三服务各自通过 ruff/mypy/build 门禁：
@@ -158,6 +174,9 @@ scaffold/
     │   └── tasks.json.jinja             ← 自动 watch（仅 vscode_auto_watch=true）
     ├── docker-compose.yml.jinja
     ├── CLAUDE.md.jinja                  ← 项目说明参数化
+    ├── scripts/
+    │   ├── claude-attribution.sh        ← 开关：本项目提交是否含 Claude 署名（默认 off）
+    │   └── check-claude-attribution.sh  ← commit-msg 门禁：按开关移除/保留署名
     ├── .claude/commands/
     │   └── new-feature.md.jinja         ← 项目内命令：按规则引导生成功能分层代码
     ├── .claude/rules/
diff --git a/copier.yml b/copier.yml
index 32897d0..c5b1c72 100644
--- a/copier.yml
+++ b/copier.yml
@@ -43,6 +43,8 @@ _exclude:
 
 _tasks:
   - command: git init
+  # 默认不在提交中包含 Claude 署名（commit-msg 门禁据此剥除）；改用 ./scripts/claude-attribution.sh on 保留
+  - command: "git config scaffold.includeClaude false"
   - command: git add .
   - command: "git commit -m 'chore: initialize project from scaffold'"
   - command: uv sync
diff --git a/scripts/retrofit.sh b/scripts/retrofit.sh
index a047b07..a7c169c 100755
--- a/scripts/retrofit.sh
+++ b/scripts/retrofit.sh
@@ -14,7 +14,7 @@
 set -euo pipefail
 
 # ── 默认值 ────────────────────────────────────────────────────────────────────
-SCAFFOLD_URL="${SCAFFOLD_URL:-git+https://github.com/your-org/scaffold.git}"
+SCAFFOLD_URL="${SCAFFOLD_URL:-git+https://github.com/baozaotumao2025/scaffold.git}"
 TARGET="."
 DRY_RUN=0
 FORCE=0
diff --git a/template/.pre-commit-config.yaml.jinja b/template/.pre-commit-config.yaml.jinja
index 0be158f..1613581 100644
--- a/template/.pre-commit-config.yaml.jinja
+++ b/template/.pre-commit-config.yaml.jinja
@@ -24,6 +24,15 @@ repos:
       - id: conventional-pre-commit
         stages: [commit-msg]
 
+  # Claude 署名门禁：按 scaffold.includeClaude 策略移除/保留（默认移除）
+  - repo: local
+    hooks:
+      - id: claude-attribution-gate
+        name: Claude 署名门禁
+        entry: bash scripts/check-claude-attribution.sh
+        language: system
+        stages: [commit-msg]
+
 {%- if include_backend or include_agent %}
 
   # Python（ruff 同时做 lint + format）
diff --git a/template/scripts/check-claude-attribution.sh b/template/scripts/check-claude-attribution.sh
new file mode 100755
index 0000000..61c9730
--- /dev/null
+++ b/template/scripts/check-claude-attribution.sh
@@ -0,0 +1,18 @@
+#!/usr/bin/env bash
+# commit-msg 门禁：按 scaffold.includeClaude 策略处理 Claude 署名。
+# 由 pre-commit 在 commit-msg 阶段调用，参数 $1 为提交信息文件。
+#   off（默认）：剥除 Co-Authored-By: Claude 行
+#   on        ：保留（./scripts/claude-attribution.sh on）
+set -euo pipefail
+
+msg_file="${1:?用法: check-claude-attribution.sh <commit-msg-file>}"
+include="$(git config --get scaffold.includeClaude 2>/dev/null || echo false)"
+[ "$include" = "true" ] && exit 0
+
+if grep -qiE 'co-authored-by:.*claude' "$msg_file"; then
+  tmp="$(mktemp)"
+  grep -viE 'co-authored-by:.*claude' "$msg_file" >"$tmp"
+  mv "$tmp" "$msg_file"
+  echo "🛡  已移除 Claude 署名（scaffold.includeClaude=false；保留请运行 ./scripts/claude-attribution.sh on）"
+fi
+exit 0
diff --git a/template/scripts/claude-attribution.sh b/template/scripts/claude-attribution.sh
new file mode 100755
index 0000000..acf8bfa
--- /dev/null
+++ b/template/scripts/claude-attribution.sh
@@ -0,0 +1,24 @@
+#!/usr/bin/env bash
+# 设置本项目提交是否包含 Claude 署名（Co-Authored-By: Claude）。
+# 策略存于 git config scaffold.includeClaude，由 commit-msg 门禁强制执行。
+# 用法：./scripts/claude-attribution.sh on|off|status
+set -euo pipefail
+
+case "${1:-status}" in
+  on)
+    git config scaffold.includeClaude true
+    echo "✓ 本项目提交将【保留】Claude 署名"
+    ;;
+  off)
+    git config scaffold.includeClaude false
+    echo "✓ 本项目提交将【移除】Claude 署名（默认）"
+    ;;
+  status)
+    v="$(git config --get scaffold.includeClaude 2>/dev/null || echo 'false（默认，未显式设置）')"
+    echo "scaffold.includeClaude = $v"
+    ;;
+  *)
+    echo "用法: $0 on|off|status" >&2
+    exit 2
+    ;;
+esac