Fix checkout conflict by temporarily moving cache file (#378)

- Temporarily move __cached_results.json.gz before checkout to avoid conflicts
- Restore the file after switching branches
- Resolves 'untracked working tree files would be overwritten by checkout' error

.github/workflows/generate_cached_results.yml

@@ -56,6 +56,11 @@ jobs:
           FILE_SIZE=$(stat -f%z __cached_results.json.gz 2>/dev/null || stat -c%s __cached_results.json.gz)
           echo "📦 Generated cache file: $(echo "scale=1; $FILE_SIZE/1024/1024" | bc -l)MB"
 
+          # Temporarily move the cache file to avoid checkout conflicts
+          if [ -f "__cached_results.json.gz" ]; then
+            mv __cached_results.json.gz __cached_results.json.gz.tmp
+          fi
+
           # Check if cached-data branch exists
           if git show-ref --verify --quiet refs/remotes/origin/cached-data; then
             echo "📋 Switching to existing cached-data branch"
@@ -68,6 +73,11 @@ jobs:
             git rm -rf . 2>/dev/null || true
           fi
 
+          # Restore the cache file
+          if [ -f "__cached_results.json.gz.tmp" ]; then
+            mv __cached_results.json.gz.tmp __cached_results.json.gz
+          fi
+
           # Ensure we only have the files we want
           # Remove all tracked files except README.md
           if [ -f "README.md" ]; then