cat > .helmignore <<'EOF'
# VCS / OS
.git/
.gitignore
.DS_Store
Thumbs.db

# Editors / tooling
.vscode/
.idea/

# Node / Python etc.
node_modules/
venv/
__pycache__/

# Helm artifacts
*.prov
Chart.lock

# Archives / backups / dumps
*.tgz
*.tar.gz
*.zip
*.bak
*.tmp
backups/
backup/
dump/
*.dump
*.sql
*.sql.gz

pvcops/
*.sh

# Local files you mentioned

EOF