Update workflow settings

Author: sdmj76

.github/workflows/build.yml

@@ -28,11 +28,25 @@ jobs:
     strategy:
       matrix:
         configuration: [Release, Debug]
-
+        
     steps:
+      - name: Setup SSH
+        run: |
+          mkdir -p ~/.ssh
+          echo "${{ secrets.SSH_PRIVATE_KEY }}" > ~/.ssh/id_ed25519
+          chmod 600 ~/.ssh/id_ed25519
+          ssh-keyscan github.com >> ~/.ssh/known_hosts
+
       - name: Checkout
         uses: actions/checkout@v5
 
+      - name: Clone submodule via SSH
+        run: |
+          # 清除 actions/checkout 设置的 HTTPS insteadOf，确保使用 SSH
+          git config --unset-all url."https://github.com/".insteadOf || true
+          git submodule update --init --recursive
+          ls -la Mousecape/Mousecape
+
       - name: Cache Xcode DerivedData
         uses: actions/cache@v5
         with: