fix: auto-stash local changes before git pull in deployment

- Check for uncommitted changes (both staged and unstaged)
- Auto-stash with timestamp before pulling
- Prevents "Your local changes would be overwritten" errors
- Commented-out option to reapply stash after pull if needed

Server changes are preserved in git stash for recovery if needed.

Fixes: "error: Your local changes to the following files would be overwritten by merge"

.github/workflows/deploy.yml

@@ -34,8 +34,20 @@ jobs:
             echo "🔧 Fixing repository permissions..."
             sudo chown -R $USER:$USER .
 
+            # Stash any local changes before pulling
+            if ! git diff-files --quiet || ! git diff-index --quiet --cached HEAD; then
+              echo "💾 Stashing local changes..."
+              git stash push -m "Auto-stash before deployment $(date +%Y%m%d-%H%M%S)"
+            fi
+
             git pull origin main
 
+            # Reapply stashed changes if any (optional - comment out if not needed)
+            # if git stash list | grep -q "Auto-stash"; then
+            #   echo "♻️  Reapplying stashed changes..."
+            #   git stash pop || echo "⚠️  Could not reapply stash (conflicts?)"
+            # fi
+
             echo "🔄 Restarting service..."
             sudo systemctl restart $SERVICE_NAME