The development container includes MySQL (startup: .devcontainer/start-dev.sh) and the toolchain required for this repository. Initial clone, environment files, and pnpm dev are documented in the repository README.
This document only describes changes to the container definition.
Modify files under .devcontainer/, then run Dev Containers: Rebuild and Reopen in Container. Changes do not apply until rebuild.
Add extension identifiers to the "extensions" array in .devcontainer/devcontainer.json, then rebuild.
Optional: edit .devcontainer/.zshrc, then rebuild.