Three strands of work on the chapter surface, all reading from the same
constraint: this site ships no runtime dependencies, so every effect below
is native CSS or an .astro component.
Motion (src/styles/motion.css, DrawRule.astro). A scroll-driven layer of
reveals, hero parallax, section depth, and a hairline that paints itself
along its path, scrubbed by `animation-timeline: view()` — 0KB against
lottie-web's ~60KB gzipped on the main thread. Every scrubbed rule sits
inside `prefers-reduced-motion: no-preference` and `@supports`, so a
Firefox reader or an opted-out one gets the complete static page rather
than one with holes in it. Ranges key to `cover 40%`-`cover 75%` where the
motion is meant to be watched: `view()` ranges key to first visibility,
which on a 2600px page is long before anyone is reading the section.
`.agents/skills/motion/references/scroll-driven.md` records the technique
and the two ways `pathLength` normalisation was broken while building it.
Diagrams (StepFlow.astro, WorktreeMap.astro). The `.steps` stack on
/skills/, /models/, and /agents/ becomes a numbered flow with connectors,
and /agents/ grows the worktree map it was describing in prose — reusing
the `trees` collection rather than a second set of strings. The map's
static variant is gated one class deeper than full-guide's page styles, so
the interactive copy renders byte-identical. Connectors are pseudo-elements,
not SVG: a stretched path desynchronises its own dash pattern, and a
straight line does not need one. Mermaid was considered and rejected at
~1MB of runtime.
Retrieval practice (/rules/, /skills/). A "check yourself" section of
native `<details>` question/answer pairs plus a citation row, both bilingual
through the existing `data-copy` toggle, and both JavaScript-free.
Two audit blind spots surfaced and are closed rather than worked around:
`build.inlineStylesheets: 'never'`, because Astro inlined sheets under ~4kB
and audit-ui.mjs reads its colour and size baseline from dist/_astro/*.css;
and `--columns` declared in the grid components, because an element-level
custom property is not a declaration the audit can resolve.
legacy/styles/skills.css is renamed and imported for its side effect. Inside
a *page*, `?url` resolves to that page's own CSS chunk whatever file it
names, so the link pointed at the wrong asset and the sheet was emitted but
never loaded — the package preview had been rendering unstyled and
overflowing since the Astro cutover.
verify.mjs gains 5 assertions for the recall sections and their Portuguese
copy: 89 now, against the 84 baseline.
Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>
- Change ReadingProgress and RouteTable to use transform (scaleX/scaleY) instead of width/height
- Convert existing easing functions to 200ms cubic-bezier(.2,0,0,1)
- Document animation purpose with CSS comments
- Add guide panel swap, review desk detail swap, and tally pop animations
- Implement prefers-reduced-motion for all new states
Extended the typography `--step-*` scale to cover the ad-hoc pixel values
used across components (10px to 48px). Added overlay tokens `--white-14`,
`--white-23`, `--white-25`, `--white-31`.
Canonicalized one-off legacy color hex values in `ReviewDetail`,
`ChangeLens`, `PreviewPane`, `RulesInteractive`, and `SkillPackageExplorer`
to map to the core semantic palette (`--deep`, `--ink`, `--line`, `--paper`,
`--muted`).
Replaced ad-hoc max-width media query boundaries (520px, 530px, 600px, 620px)
with the closest approved named tokens (`560px`, `800px`, `1100px`).
The chapters schema marks section.eyebrow / panelLabel / panelCode /
steps / copy as optional, but pages /agents/, /models/, /skills/
consume them — index access without narrowing failed astro check with
ts(18048). Same for SkillPackageExplorer: aria-selected was String(bool)
which widened to plain string and failed ts(2322) against
ButtonHTMLAttributes.
Fix: guard each required field with a helper that throws a clear
message on missing data, then read .en / .map from the narrowed value.
Page rendering is unchanged — dist/ HTML for all four files is
byte-identical before and after.
No any / as any / ! / @ts-ignore. Schema and tsconfig untouched.
Prettier reformats JSX into one expression per line; splitting
"{file.prefix}{file.label}" across two lines inserts a literal
whitespace text node between them. Snapshot diff against
.agents/snapshots/skills.txt showed the rendered HTML emitted
"├── SKILL.md" (two spaces) where vanilla showed one. Joining
the values into a single template expression keeps the rendered
text byte-identical to the legacy source.
Migrate the three remaining chapter pages to Astro routes, sharing
ChapterLayout and ChapterHero/TopBar/SiteFooter blocks. /summary/
already in place from task 12.
- /models/ -> src/pages/models.astro (zero JS)
- /agents/ -> src/pages/agents.astro (zero JS)
- /skills/ -> src/pages/skills.astro (one island: SkillPackageExplorer)
SkillPackageExplorer is the only JS across the four chapter pages;
moves vanilla skills/app.js content verbatim into the island. Uses
data-skill-file as the new hook (vanilla used data-package-file;
verify.mjs still asserts that on the legacy index.html).
Copy lives in src/content/chapters/{models,agents,skills}.json. All
four pages pass empty-text snapshot diffs against
.agents/snapshots/{models,agents,skills,summary}.txt. pnpm run verify
green: verify.mjs (16 sections), audit-ui.mjs, and check-tokens.mjs
(212 marked token-gap markers, 0 unsuppressed).
Did not touch ChapterLayout, the verification suite, contents of the
summary.astro file (it shipped with task 12), or the vanilla
chapters' HTML files at the repo root (verify.mjs still reads those).
Marcos Paulo