The gate

Nothing merges unless these pass.

Passed audits (9)

• ✓Passed

  Types check

  Type-checks .astro, .ts, .tsx. Catches wrong props and missing icons.

  astro check · pnpm check
• ✓Passed

  Color roles have rgb twins

  Every @theme color needs a --name-rgb twin in :root and :root.theme-dark (16 roles). Else bg-primary/15 breaks in one theme.

  scripts/check-color-tokens.js · pnpm check
• ✓Passed

  Tests pass

  21 test files: pure logic, nav menus (jsdom), headers/CSP, island deferral, SEO, token parser, chart data.

  vitest run · pnpm test
• ✓Passed

  CI runs the same gate

  Check, test and build on every pull request and every push to main, in GitHub Actions.

  .github/workflows/ci.yml · GitHub Actions
• ✓Passed

  Every component is documented

  42 documented entries. A component without one fails the test.

  registry.test.ts · pnpm test
• ✓Passed

  Content builds

  Static output, inlined CSS, sitemap, RSS. Fails on zod content-schema errors.

  astro build · pnpm build
• ✓Passed

  Islands load after page load

  Runs island bootstrap after load. Runs before headers so hashes match.

  defer-island-runtime.mjs · pnpm build
• ✓Passed

  Site is searchable

  Indexes the site for the palette. data-pagefind-ignore opts out.

  pagefind · pnpm build
• ✓Passed

  CSP hashes are generated

  Hashes inline scripts in dist/**/*.html; writes _headers (CSP, cache).

  generate-headers.mjs · pnpm build

Token discipline

Passed audits (3)

• ✓Passed

  Light and dark define the same roles

  16 roles in both themes; a gap fails the build check.

  scripts/check-color-tokens.js
• ✓Passed

  Opacity modifiers work in both themes

  -rgb companions exist for every color role.

  scripts/check-color-tokens.js
• ✓Passed

  Dark inherits light, then overrides

  40 properties resolved, 40 in base.

  global.css

Security headers and CSP

Built from scripts/lib/headers.mjs, the same module this table imports. Scripts: same-origin plus a sha256 per inline script.

Also sent: Content-Security-Policy, Strict-Transport-Security, X-Content-Type-Options, Referrer-Policy, Permissions-Policy, Cross-Origin-Opener-Policy, X-Frame-Options, X-Robots-Tag. /_astro/ is immutable for a year; HTML revalidates.

Accessibility rules

Contrast

Computed from tokens (Foundations). Body 14.6:1 light, 15.7:1 dark; muted above 5.6:1.

Keyboard

Skip link first. Menus close on Escape and return focus. Drawer and sheet trap focus.

Focus

One 2px token-colored :focus-visible ring.

Not color alone

Selected = state + shape. Badges have glyph and text. Deltas have arrows and words. Errors have text and aria-invalid.

Motion

Every animation has a prefers-reduced-motion branch; final values render instead.

Semantics

Landmarks, one h1, aria-expanded/controls on disclosures, table captions and scope, live filter counts.

No-JS

Content and final stats in HTML. Images have <noscript>. Tabs degrade to stacked sections.

How the code is organized

• src/styles/global.cssTokens, @theme, base layer, prose, animations. Only place colors are defined.
• src/components/ui/Primitives (Button, Badge, Avatar, Prose...). No data access.
• src/components/*.astroComposites. May query content or take props.
• src/components/*.jsxInteractive islands only. Hydrated lazily.
• *.lib.ts / src/lib/Pure, unit-testable logic.
• src/data/ and src/content/JSON lists; Markdown/MDX collections (zod-validated).
• scripts/Build tooling: headers, island deferral, token check, images.

Unlayered CSS beats utilities, so element rules go in @layer base. Pages use .wrapper. Hydration: client:visible below the fold, client:interaction (custom) for forms, search, hero.

How the images got fast

1. 1

   Big PNGs, shipped as-is.

   Swapped to WebP. Fall back to the original if it's missing.

2. 2

   Two problems.

   Phones got desktop images. "Looks fine" was just my eye.

3. 3

   So I made it prove itself.

   Every size is checked against the source. Three tests. All must pass.

   PSNR ≥ 45 dB mean error < 0.5/255 worst 0.1% ≤ 6/255

   The last one catches the one ugly edge an average hides.

4. 4

   Cheapest encoder that passes wins.

   lossy› near-lossless› lossless (always passes)

   480 · 800 · 1200 · 1600. Never upscaled. Replaced files are quarantined, not deleted.

5. 5

   A manifest feeds every card.

   Real srcset, width and height. Nothing shifts. Only files that exist get listed.

6. 6

   Load order did the rest.

   Top image: eager. Everything else: lazy, with a same-size skeleton.

Page speed

1. 60s

   Step 1

   Where it started

   Full-size PNGs, one file for every screen.

2. 90s

   Step 2

   Fixed the weight

   WebP, responsive sizes, inlined CSS.

3. 100

   Step 3

   Tuned the details

   Lazy WebGL, deferred scripts, nothing blocking.

Site speed rules

Quoted figures come from source comments; not re-measured here.

• Inlined CSSbuild.inlineStylesheets: always. No render-blocking request; resent per page.
• FontsLatin subset, self-hosted. Hanken preloaded, font-display: optional. Mono swaps (below the fold).
• Island runtime after loaddefer-island-runtime.mjs runs Astro bootstrap 600ms after window load. Source comment: about 0.3s of simulated-mobile FCP.
• Hydration ladderclient:visible below the fold. client:interaction (first input or timer) for palette, forms, listings. client:interaction=never for the WebGL hero.
• Heavy code is a separate chunkRecharts ships only in the dashboard island. Other routes do not import it.
• Logos as a spriteOne cached /logos.svg via <use>.
• Search and analytics on demandPagefind loads on first palette open. Analytics on first interaction or after 10s.
• Caching/_astro/* immutable for a year; HTML revalidates; unhashed assets 30 days.
• Motion is cheapMarquee and shimmers animate transform or background-position only. Scroll progress: one rAF-throttled handler.