fix: drop ruby/rewrite in static html

.github/CONTRIBUTING.md

@@ -0,0 +1,62 @@
+# Contributing
+
+## HTML
+
+- Semantic elements over generic `div`/`span`
+- Minimal wrappers; avoid nesting without purpose
+- Minimal classes; prefer element and attribute selectors
+- ARIA attributes where native semantics fall short
+- No inline styles; keep presentation in CSS
+- Use `<code-block lang="...">` for fenced code examples
+
+## CSS
+
+- Native CSS nesting; no preprocessors
+- `light-dark()` for theming via `color-scheme`
+- CSS custom properties for shared values
+- Specific `transition` properties, not `all`
+- Gate motion behind `prefers-reduced-motion`
+- Mobile breakpoint at `768px`
+
+## JavaScript
+
+- Functional style; `const`, arrow functions, expressions
+- Minimal intermediates; prefer composition
+- No frameworks or external dependencies
+- Handle async errors (e.g. `.catch` on clipboard)
+- No DOM writes from user input without escaping
+
+## General
+
+- Avoid dependencies if possible; prefer `npx` for external tools
+- Single file; CSS and JS are embedded in `index.html`
+- Keep the page under 1000 lines total
+- Test in both light and dark mode
+- Verify mobile layout before committing
+- Fix lint warnings in prose, not in the linter config
+
+## Server
+
+### Add a new page
+
+1. Place an `.html` file in the project root
+2. Register it in `app.js`: `.get('/path', 'file.html')`
+
+### Serve custom content
+
+1. Add a text route in `app.js`: `.get('/path', 'body')`
+
+Omit the body to respond with `ok`: `.get('/health')`
+
+### Serve static files
+
+1. Place files in a directory (e.g. `assets/`)
+2. Register in `app.js`: `.static('/assets')`
+
+### Notes
+
+- Only `GET` requests; everything else returns `405`
+- File extensions must have a known MIME type (see `Server.DEFAULTS.mime`)
+- Pages are loaded into memory at startup; restart to pick up changes
+- Static directories must be within the project root
+- `index.html` at root is auto-detected and served at `/`

.github/workflows/test.yml

@@ -0,0 +1,17 @@
+name: test
+
+on:
+  push:
+    branches: [main]
+  pull_request:
+    branches: [main]
+
+jobs:
+  test:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v6
+      - uses: actions/setup-node@v6
+        with:
+          node-version: 24
+      - run: npm test

.gitignore

@@ -1,3 +1,4 @@
 node_modules/
-*.DS_STORE
+.DS_Store
 tmp
+.claude/