Extending
- Authoring a themePackage layout, the manifest, Ed25519 signing, the InstallPackage workflow, the pnpm theme:dev inner loop, and the var(--cusp-*) design-token contract for Cusp themes
- Authoring a pluginBuild a Cusp plugin: declare the five capability bindings, subscribe to lifecycle hooks, read deployer config, and run inside a capability-scoped Dynamic Worker Loader sandbox