Tier-0 V2.0 quick fixes: sitemap, robots.txt, LaTeX + nav#105
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- Enable jekyll-sitemap (bundled with github-pages) so /sitemap.xml is generated for search indexing; add robots.txt pointing to it (#72). - Fix malformed LaTeX in advancedio/smoothing-input.md: a nested `$>$` inside a $$...$$ block broke MathJax; use a literal `>` to match the `if i = 1` case above it. - Migrate esp32/esp32-ide.md from the old .btn "Back to" button to the standard card-style <nav class="lesson-nav">, matching the other esp32 lessons (the nav script doesn't recognize the single back-button form). Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
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Summary
Punch-list item B — the fast, mechanical, no-regret Tier-0 fixes toward V2.0. Independent of the Actions-deploy PR (#104).
Changes
jekyll-sitemap+robots.txt(helps Fix page indexing problems #72 indexing). Enabled the plugin in_config.yml(it ships with thegithub-pagesgem and is whitelisted, so it works under both the legacy and Actions builds). Added a rootrobots.txtpointing at the generated sitemap.advancedio/smoothing-input.md: a nested$>$inside a$$…$$block broke MathJax parsing. Replaced with a literal>to match the\text{if i = 1}case just above it.esp32/esp32-ide.md: converted the old.btn"Back to" button to the standard card-style<nav class="lesson-nav">, matching every other esp32 lesson.Verification
bundle exec jekyll build(~20s)._site/sitemap.xmlgenerated with correct absolute URLs, e.g.https://makeabilitylab.github.io/physcomp/advancedio/accel.html(baseurl preserved)._site/robots.txtpublished with the sitemap line.esp32-ide.htmlnow renderslesson-nav/nav-prev(nobtn-outline).Notes
robots.txton a project page is served at/physcomp/robots.txt; crawlers only honor the authoritative one at the org root (makeabilitylab.github.io/robots.txt). The real indexing win here is thesitemap.xml, which is directly submittable to Google Search Console.scripts/update_lesson_nav.py) doesn't recognize this single "Back to" button form (and has a Windows-only cp1252 crash in its summary print). It did flag two other still-stale pages —communication/p5js-serial-io.mdandcpx/capacitive-touch.md— out of scope here but worth a follow-up.🤖 Generated with Claude Code