planit

Use whenever a src/lib module is created or edited. Ensure the module has .ts, .test.ts, and .context.md files, and document it with adjacent .context.md using a standard format.

Build or update a route page under src/pages using a consistent 6-file contract per route basename (`<route>_page`). Use when creating a new page route, refactoring an existing page route, or adding stories/tests/docs for a page.

Build or update UI components using vanilla HTML and TypeScript (using <template>), with Storybook support, and documentation in a Markdown file (in total, 4 files per component). Use when asked to create new components, refactor UI into HTML+TS templates, or add stories/docs for existing components in this codebase.