fix: auto-fix git permissions before pull in deployment

- Check if .git/FETCH_HEAD has write permission issues
- Auto-fix with sudo chown if needed
- Prevents "Permission denied" errors during git pull
- Ensures deployment user owns .git directory

Fixes deployment error: "error: cannot open '.git/FETCH_HEAD': Permission denied"

.github/workflows/deploy.yml

@@ -29,6 +29,13 @@ jobs:
             echo "🚀 Deploying to server..."
             echo "📥 Pulling latest changes..."
             cd $REPO_PATH
+
+            # Fix git permissions if needed
+            if [ -f .git/FETCH_HEAD ] && [ ! -w .git/FETCH_HEAD ]; then
+              echo "🔧 Fixing git permissions..."
+              sudo chown -R $USER:$USER .git
+            fi
+
             git pull origin main
 
             echo "🔄 Restarting service..."