chore(security): 移除安全文件签名功能

- 删除了 security/keys.json 配置文件
- 删除了 security/revocation.json 撤销列表文件
- 从 GitHub Actions 工作流中移除了安全文件签名步骤
- 更新了工作流中的 git add 命令，不再包含安全文件
- 删除了 sign-security.sh 签名脚本文件

.github/workflows/sign.yml

@@ -6,7 +6,6 @@ on:
     paths:
       - 'plugins/**/*.js'
       - 'plugins/**/manifest.json'
-      - 'security/*.json'
   workflow_dispatch:
 
 jobs:
@@ -38,19 +37,10 @@ jobs:
       - name: Generate store.json
         run: bash scripts/generate-store.sh > store.json
 
-      - name: Sign security files
-        env:
-          SIGNING_KEY: ${{ secrets.PLUGIN_SIGNING_KEY }}
-        run: |
-          echo "$SIGNING_KEY" > /tmp/private.key
-          chmod 600 /tmp/private.key
-          bash scripts/sign-security.sh /tmp/private.key
-          rm -f /tmp/private.key
-
       - name: Commit changes
         run: |
           git config user.name "GitHub Actions"
           git config user.email "actions@github.com"
-          git add -A "plugins/**/*.sig" store.json "security/*.json"
+          git add -A "plugins/**/*.sig" store.json
           git diff --staged --quiet || git commit -m "chore: update signatures and store"
           git push