diff --git a/.github/dependabot.yml b/.github/dependabot.yml
new file mode 100644
index 0000000..6f361d0
--- /dev/null
+++ b/.github/dependabot.yml
@@ -0,0 +1,13 @@
+version: 2
+# 依赖更新工具（scorecard DependencyUpdateTool；ADR-0011 安全姿态基线遗留项）：
+# 仅管理 workflows 里的 github-actions 引用（SHA 锚定+版本注释，dependabot 可提更新 PR）。
+# gate.yml 的 pyyaml==6.0.3 为运行时一次性安装（无 Python manifest）——不纳入 dependabot：
+# 本仓 .github/ 属 C1 路径，依赖升级 PR 须引用 ADR（adr-required），自动 PR 无法自携，
+# 升级走显式人工 PR（评审项：避免注释误读为已覆盖全部第三方依赖）。
+updates:
+  - package-ecosystem: github-actions
+    directory: /
+    schedule:
+      interval: weekly
+    cooldown:            # zizmor dependabot-cooldown：新版本冷却 7 天再提 PR（供应链缓冲）
+      default-days: 7
diff --git a/.github/workflows/gate.yml b/.github/workflows/gate.yml
index 076d2cd..3b04162 100644
--- a/.github/workflows/gate.yml
+++ b/.github/workflows/gate.yml
@@ -26,7 +26,7 @@ jobs:
           python-version: "3.12"
       - name: YAML 全量解析（governance + standards）
         run: |
-          pip install pyyaml -q
+          pip install pyyaml==6.0.3 -q   # 版本钉死（scorecard PinnedDependencies；ADR-0011 版本钉死遗留项）
           python3 - <<'EOF'
           import glob, sys, yaml
           files = glob.glob("governance/**/*.yaml", recursive=True) + glob.glob("standards/**/*.yaml", recursive=True)
diff --git a/LICENSE b/LICENSE
new file mode 100644
index 0000000..5ef822c
--- /dev/null
+++ b/LICENSE
@@ -0,0 +1,21 @@
+MIT License
+
+Copyright (c) 2026 Cloudbird Software
+
+Permission is hereby granted, free of charge, to any person obtaining a copy
+of this software and associated documentation files (the "Software"), to deal
+in the Software without restriction, including without limitation the rights
+to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+copies of the Software, and to permit persons to whom the Software is
+furnished to do so, subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in all
+copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+SOFTWARE.
diff --git a/SECURITY.md b/SECURITY.md
index 479b543..e694a23 100644
--- a/SECURITY.md
+++ b/SECURITY.md
@@ -2,7 +2,7 @@
 
 ## 报告漏洞
 
-请通过仓库 **Security → Report a vulnerability** 提交（Private vulnerability reporting 已开启）。不要在 Issue/PR/讨论中公开披露。
+请通过仓库 **Security → Report a vulnerability** 提交（Private vulnerability reporting 已开启，[报告入口文档](https://docs.github.com/en/code-security/how-tos/report-and-fix-vulnerabilities/report-privately)）。不要在 Issue/PR/讨论中公开披露。
 
 ## 响应时限（红队修复：此前无 SLA）