fix: replace actions/checkout with native git — runner has no node

The self-hosted runner (gitea-act-runner-custom) lost node after image
rebuild. Replace actions/checkout@v4 with plain git clone/reset.
Also adds a guard to auto-rebuild the runner image if node is missing.

.github/workflows/deploy.yml

@@ -8,8 +8,21 @@ jobs:
   deploy:
     runs-on: self-hosted
     steps:
+      - name: Rebuild runner image if needed
+        run: |
+          if ! docker run --rm gitea-act-runner-custom:latest node --version > /dev/null 2>&1; then
+            docker build -t gitea-act-runner-custom:latest -f /home/deployer/gitea-runner.Dockerfile /home/deployer/
+          fi
+
       - name: Checkout
-        uses: actions/checkout@v4
+        run: |
+          if [ ! -d /workspace/darkcodex/api-ubigeo/.git ]; then
+            git clone https://948ee86882f8d9ca46eb94750addfccdace443a6@git.darkcodex.dev/darkcodex/api-ubigeo.git \
+              /workspace/darkcodex/api-ubigeo
+          fi
+          cd /workspace/darkcodex/api-ubigeo
+          git fetch origin main
+          git reset --hard origin/main
 
       - name: Sync source
         run: |
@@ -18,7 +31,7 @@ jobs:
             --exclude='node_modules' \
             --exclude='dist' \
             --exclude='.env' \
-            . /home/deployer/api-ubigeo/
+            /workspace/darkcodex/api-ubigeo/ /home/deployer/api-ubigeo/
 
       - name: Build & deploy
         run: bash /home/deployer/deploy-ubigeo.sh