Website with a feedback form that opens GitHub issues, and pi's contributor gate

- site/: landing page, /feedback/ and /privacy/ on Cloudflare Pages
  (frame-control.pages.dev). POST /api/feedback validates the form and opens
  a labelled issue with a fine-grained token; honeypot, minimum fill time and
  KV rate limits keep spam out. Ko-fi donate buttons appear once the page
  name is set in site/public/js/site.js.
- .github: the issue and PR gate from badlogic/pi-mono. New contributors'
  issues and PRs are auto-closed; a maintainer replying lgtmi/lgtm approves
  them via APPROVED_CONTRIBUTORS. Issue templates and CONTRIBUTING.md.
- CI runs the website tests; README points feedback at the form.

Co-Authored-By: Claude Opus 5.5 (1M context) <noreply@anthropic.com>

.github/workflows/checks.yml

@@ -35,6 +35,8 @@ jobs:
         run: python -m unittest discover -s tests -v
       - name: App syntax
         run: node --check app/main.js && node --check app/build/make-icon.js && node --check app/build/fetch-deps.js && node --check app/preload.js && node --check app/install-link.js
+      - name: Website
+        run: node --test site/test/*.test.mjs && node --check site/public/js/site.js && node --check site/public/js/feedback.js
 
   # The server runs on each desktop OS the app ships for, on the Python version
   # the app bundles (app/build/fetch-deps.js) and, on Ubuntu, a newer one.