fix: improve git clone error handling in build workflow

.gitea/workflows/build.yaml

@@ -35,8 +35,15 @@ jobs:
                 - -c
                 - |
                   set -e
+                  echo "Cloning repository..."
+                  rm -rf /workspace/* /workspace/.[!.]* 2>/dev/null || true
                   git clone --depth 1 http://gitea:3000/unchained/manoon-headless.git /workspace
-                  cd /workspace && echo "Building: $(git rev-parse --short HEAD)"
+                  if [ ! -d /workspace/.git ]; then
+                    echo "ERROR: Clone failed - .git directory not found"
+                    exit 1
+                  fi
+                  cd /workspace
+                  echo "Successfully cloned: $(git rev-parse --short HEAD)"
                 volumeMounts:
                 - name: workspace
                   mountPath: /workspace