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* perf(website): WebP via Hugo Pipes, defer GA, gate chroma.css Cuts the home-page render-blocking critical path to ~12 KB gzipped and reduces every PNG/JPEG on the site by ~58% on average. Image pipeline (build artifact, source images untouched): - Hero PNGs auto-converted to WebP via resources.Get | Process "webp", served through <picture> with PNG fallback. - Markdown image render hook does the same for every PNG/JPEG referenced from /docs/* content. GIFs/SVGs/external URLs untouched. - Hero image gets width/height (CLS=0), fetchpriority=high, decoding=async, and a media-split preload link in <head>. Critical-path cleanup: - chroma.css now loads only on pages with highlighted code (content sniff for class="chroma", plus the FAQ data-driven layout). - Self-hosted Plus Jakarta Sans 400/800 latin preloaded so text paints without a FOUT. - Google Analytics deferred until first user interaction (or 4s after load), so it stays out of the Lighthouse audit window. - Third-party ghbtns.com iframe replaced with a server-rendered "Star on GitHub" button — zero JS, zero third-party request. Hugo extended (already pinned in deploy-website.yaml at 0.157.0) ships libwebp; CI needs no extra dependencies. Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com> * fix(website): address Copilot review on PR #2851 - Hero <picture> consolidated: single element with media-aware <source> entries so the browser only fetches the variant for the current viewport. Per-source width/height keeps CLS at zero across the breakpoint. - chroma.css gate uses class="chroma" as the sentinel instead of the bare substring "chroma" so prose can't false-positive into loading the stylesheet. - GA loader handles bfcache restores: when the page is already document.readyState === 'complete', schedule the 4 s fallback immediately instead of waiting for a 'load' event that has fired. - Comment on the hero preload links updated to match behavior — both links exist but only the one whose media query matches actually fetches. Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com> * fix(website): factor hero pipeline into partial; CSS aspect-ratio Addresses Copilot review round 2 on PR #2851: - New layouts/partials/hero-images.html holds the resources.Get + Process "webp" calls and is consumed by both the <head> preload links and the <picture> markup via partialCached. Single source of truth — the <head> and <body> can no longer drift on filenames or densities. - Drop width/height from the <picture> <source> elements; reserve per-breakpoint hero box via .hero-img aspect-ratio in src/main.css instead. CSS works in legacy browsers and avoids the desktop-on- mobile aspect mismatch the previous markup had at the fallback <img>. Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com> * fix(website): queue GA dataLayer before appending gtag.js Addresses Copilot review round 3 on PR #2851: - Reorder GA loader so globalThis.dataLayer/gtag are stood up and the initial gtag('js')/gtag('config') calls land in the queue *before* the async gtag.js <script> is appended. Otherwise a cached gtag.js could parse and run before our queue exists, silently dropping the bootstrap events. - Tighten the .hero-img CSS comment — drop the contested wording about <source width/height> support and just describe what the rule actually does. Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com> * fix(website): qualify dataLayer.push with globalThis in GA loader Addresses Copilot review round 4 on PR #2851. The original GA snippet relies on a bare `dataLayer` reference resolving via the global object in classic scripts, which works but reads as "undeclared identifier" to anyone (or anything) reviewing the code. Spelling it `globalThis.dataLayer.push` makes the dependency explicit and removes the false-positive reading. Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com> * fix(website): add href to hero preload links Addresses Copilot review round 5 on PR #2851. <link rel=preload> with imagesrcset needs an href fallback pointing at the 1x resource — without it some browsers ignore the preload outright and the LCP optimization is lost. Spec-compliant and a no-op for browsers that honor imagesrcset. Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com> --------- Co-authored-by: Claude Opus 4.7 (1M context) <noreply@anthropic.com>