Generate complete Helm charts using the bjw-s-labs common library (app-template). Use when: (1) Creating a new Helm chart for Kubernetes applications, (2) Converting Docker Compose to Helm charts, (3) Setting up controllers with sidecars/init containers, (4) Configuring services, ingress, persistence, or networking, (5) Creating charts with multiple controllers or complex setups. Generates Chart.yaml, values.yaml, templates/common.yaml, and templates/NOTES.txt following bjw-s patterns.