## Summary
Closes#18.
- Add per-page titles, meta descriptions, Open Graph/Twitter tags, and canonical URLs on public `base2.html` pages
- Improve semantic structure: skip link, primary nav ARIA, single `<main id="main-content">`, heading hierarchy, descriptive image alts
- Publish `/robots.txt`, `/sitemap.xml`, and `/llms.txt` (linked from site head via `rel="alternate"`)
- Agentic/a11y fixes: membership checkbox label associations, ZIP `name` attribute, layout stability (image aspect-ratio / min-height), footer year without `document.write`
- WebMCP deferred — membership + Stripe checkout remain standard HTML/Stripe flows; no audit flag justified custom MCP surface yet
## Lighthouse / agentic notes
Baseline Lighthouse runs still need Chrome Canary export on staging/prod. Structural SEO/a11y items from the ticket are implemented so follow-up audits can capture before/after scores.
Expected audit wins vs prior minimal `charset`+`viewport` head:
- SEO: unique titles/descriptions, crawl directives, sitemap
- Agentic/a11y: landmarks, labels, CLS-oriented image sizing
## Test plan
- [x] `uv run python manage.py test schasite` (34 passed)
- [ ] Spot-check Home/About/Calendar/Dues/Membership/Board/Links in browser
- [ ] Confirm `/robots.txt`, `/sitemap.xml`, `/llms.txt` on deployed host
- [ ] Run Lighthouse SEO + Agentic browsing on key pages and note before/after pass ratio on the issue
Reviewed-on: #27
## Summary
- Remove unused `.top-head` / `.top-body` CSS rules that referenced missing GIF files (`top-head.gif`, `top-body.gif`), which caused `whitenoise.storage.MissingFileError` and crashed the prod container at collectstatic/startup.
- Drop a stray `{% load static %}` tag from `style.css` (not a Django template).
- Branch rebased onto current `master` (dockerize already merged via #21); this PR is the CSS-only fix.
## Test plan
- [ ] Merge and let deploy run (or redeploy scha prod).
- [ ] Confirm web container stays up (no WhiteNoise `MissingFileError`).
- [ ] Spot-check site CSS still looks fine on public pages.
- [ ] Separately: if Compose still warns about unset `$…` vars, escape `$` as `$$` in `~/Documents/secrets/scha/scha_prod.env` password/`DATABASE_URL`.
Reviewed-on: #23
westfarn