feat: 生成最后更新时间字段，支持增量更新

.github/workflows/build.yml

@@ -10,6 +10,14 @@ on:
       - 'repo/**'
       - 'build/build.js'
       - '.github/workflows/**'
+  workflow_dispatch:
+    inputs:
+      force_update:
+        description: '强制执行全量更新'
+        required: false
+        type: boolean
+        default: false
+
 jobs:
   build:
     # Skip this job if the repository is a fork
@@ -33,7 +41,15 @@ jobs:
       uses: actions/setup-node@v4
       with:
         node-version: ${{ matrix.node-version }}
-    - run: node ./build/build.js
+    - name: Build repo.json
+      run: |
+        if [ "${{ github.event.inputs.force_update }}" = "true" ]; then
+          echo "执行强制全量更新"
+          node ./build/build.js --force
+        else
+          echo "执行增量更新"
+          node ./build/build.js
+        fi
     - uses: stefanzweifel/git-auto-commit-action@v5
       with:
         commit_message: update repo.json
@@ -63,4 +79,4 @@ jobs:
           r2-secret-access-key: ${{ secrets.R2_SECRET_ACCESS_KEY }}
           r2-bucket: ${{ secrets.R2_BUCKET }}
           source-dir: my_files/
-          destination-dir: github_mirror/
+          destination-dir: github_mirror/