refactor: retire the hand-written site

Deletes the pre-Astro pages, scripts, and stylesheets that the migration
replaced, and moves the ones it did not replace out of the way.

Deleted (32 files): app.js, responsive.css, landing.css, rules/app.js,
rules/styles.css, skills/app.js, the ten route index.html files, and the
root hands-on/ copy, which is byte-identical to public/hands-on/ -- the
one the build actually ships.

Moved to legacy/ (12 files): styles.css, full-guide/audit.css,
chapters.css, skills/styles.css, skills-review/styles.css,
skills-review/change-lens.css, and the skills-review/app.js module graph.
These are not dead. The Astro pages import them and the build fails
without them, which the plan had not accounted for. They go to legacy/
rather than src/ because check-tokens.mjs sweeps src, and these files are
full of raw hex and unnamed breakpoints: moving one into src/ should mean
migrating it to tokens in the same change, not adding a scan exclusion.
The prettier, stylelint, and eslint ignore lists that already named these
files at their old paths now name legacy/ instead.

verify.mjs no longer reads app.js. The 102 Portuguese strings were
extracted from its translations.pt object before deletion into
.agents/snapshots/full-guide-pt.json -- a legacy capture, not a snapshot
of the Astro build, so the assertion still compares against an
independent source. The brace-matching helper's assertion is replaced by
one that rejects an empty snapshot entry, without which trimming the
snapshot would make the presence check pass vacuously. Count stays at 84.

audit-ui.mjs reads the ten pages from dist/ and resolves Astro's
base-absolute hrefs against it.

Before deleting anything, rendered-text-diff was run across all ten
routes plus both Portuguese pages: every one at parity, 0 missing and 0
extra. That comparison is not repeatable once the legacy files are gone.
computed-style-diff on /full-guide/ stays at 32 differences, so the moves
are style-neutral.

Docs updated to match: README, AGENTS.md, GATES.md, the architecture
context, the operations guide's lab instructions, and the three skills
that told you to serve the vanilla site.

Publishing is not part of this commit.

Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>

hands-on/rules/app.js

@@ -1,124 +0,0 @@
-// Five rule sources lifted from netcracker/interview.
-// Toggling a rule injects its body into the ruled prompt.
-const RULES = [
-  {
-    id: 'agents',
-    name: 'AGENTS.md',
-    kind: 'Repo-wide instruction',
-    path: 'AGENTS.md',
-    en: 'Read AGENTS.md before touching this repo. Stack: pnpm + turbo monorepo, Go API, Next.js apps. Gates run from the monorepo root: pnpm lint, typecheck, test.',
-    pt: 'Leia AGENTS.md antes de tocar neste repo. Stack: pnpm + turbo monorepo, API em Go, apps Next.js. Gates rodam da raiz: pnpm lint, typecheck, test.'
-  },
-  {
-    id: 'skill',
-    name: 'gate-discipline skill',
-    kind: 'Skill body',
-    path: '.agents/skills/gate-discipline/SKILL.md',
-    en: 'Skill `gate-discipline`: every gate runs separately with `$?`. No `| tail`. `TURBO_FORCE=true` if a pass looks too cheap. Generated code is regenerated, never hand-edited.',
-    pt: 'Skill `gate-discipline`: cada gate roda separado com `$?`. Nada de `| tail`. `TURBO_FORCE=true` se o passar for bom demais. Código gerado se regenera, nunca se edita.'
-  },
-  {
-    id: 'husky',
-    name: 'Husky pre-commit',
-    kind: 'Git hook (commit time)',
-    path: '.husky/pre-commit',
-    en: 'Pre-commit runs `pnpm exec lint-staged`, then `node scripts/check-ui-contract.mjs` (UI ratchet), then commitlint. Counts in the baseline may only go DOWN.',
-    pt: 'Pre-commit roda `pnpm exec lint-staged`, depois `node scripts/check-ui-contract.mjs` (ratchet de UI), depois commitlint. Contadores do baseline só podem DIMINUIR.'
-  },
-  {
-    id: 'enforcer',
-    name: 'check-ui-contract.mjs',
-    kind: 'Custom enforcer (CLI)',
-    path: 'scripts/check-ui-contract.mjs',
-    en: 'Enforcer scans for raw <button>, silent catches, pages without h1, hardcoded colors, duplicated components. Fails when a count goes UP. Fix = `--accept` to re-baseline lower.',
-    pt: 'Enforcer varre <button> cru, catch silencioso, páginas sem h1, cores hardcoded, componentes duplicados. Falha quando contador SOBE. Corrigir = `--accept` para re-baseline menor.'
-  },
-  {
-    id: 'commitlint',
-    name: 'commitlint',
-    kind: 'Commit-msg linter',
-    path: 'commitlint.config.cjs',
-    en: 'Commitlint enforces Conventional Commits. Format: `<type>(<scope>): <subject>`. Types: feat, fix, docs, refactor, test, chore, build, ci, perf, style.',
-    pt: 'Commitlint enforça Commits Convencionais. Formato: `<tipo>(<escopo>): <assunto>`. Tipos: feat, fix, docs, refactor, test, chore, build, ci, perf, style.'
-  }
-];
-
-// The task we're asking the agent to perform.
-const TASK = {
-  en: { goal: 'Refactor the `getUserById` endpoint to return 404 instead of throwing.', ctx: 'services/api/internal/user/handler.go. No DB schema change.' },
-  pt: { goal: 'Refatorar o endpoint `getUserById` para retornar 404 em vez de lançar exceção.', ctx: 'services/api/internal/user/handler.go. Sem mudança de schema.' }
-};
-
-const NAIVE = {
-  en: `Task: ${TASK.en.goal}\nFile: ${TASK.en.ctx}\nPlease make the change and tell me when done.`,
-  pt: `Tarefa: ${TASK.pt.goal}\nArquivo: ${TASK.pt.ctx}\nFaça a mudança e me avise quando terminar.`
-};
-
-const state = { enabled: new Set(['agents']), lang: 'en' };
-
-const ruleList = document.querySelector('#rule-list');
-const ruleCount = document.querySelector('#rule-count');
-const promptNaive = document.querySelector('#prompt-naive');
-const promptRuled = document.querySelector('#prompt-ruled');
-const copyBtn = document.querySelector('#copy-btn');
-const langButtons = document.querySelectorAll('.lang-switch button');
-
-function renderRules() {
-  ruleList.innerHTML = RULES.map((rule) => `
-    <article class="rule" data-id="${rule.id}">
-      <div>
-        <h3>${rule.name}</h3>
-        <p>${rule.kind} <code>${rule.path}</code></p>
-      </div>
-      <span class="rule-tag">${rule.id}</span>
-      <button class="toggle" type="button" data-rule="${rule.id}" aria-pressed="${state.enabled.has(rule.id)}" aria-label="Toggle ${rule.name}"></button>
-    </article>
-  `).join('');
-  ruleCount.textContent = `${state.enabled.size} / ${RULES.length} active`;
-}
-
-function renderPrompts() {
-  const lang = state.lang;
-  promptNaive.textContent = NAIVE[lang];
-
-  const active = RULES.filter((r) => state.enabled.has(r.id));
-  const blocks = active.map((r) => `# ${r.name} (${r.path})\n${r[lang]}`).join('\n\n');
-  const head = `Task: ${TASK[lang].goal}\nFile: ${TASK[lang].ctx}`;
-  const tail = lang === 'en'
-    ? '\n\nRun each gate separately and print $? before claiming done.'
-    : '\n\nRode cada gate separado e imprima $? antes de dizer que terminou.';
-  promptRuled.textContent = blocks ? `${head}\n\n${blocks}${tail}` : head + tail;
-}
-
-function bind() {
-  ruleList.addEventListener('click', (e) => {
-    const btn = e.target.closest('.toggle');
-    if (!btn) return;
-    const id = btn.dataset.rule;
-    if (state.enabled.has(id)) state.enabled.delete(id); else state.enabled.add(id);
-    btn.setAttribute('aria-pressed', String(state.enabled.has(id)));
-    ruleCount.textContent = `${state.enabled.size} / ${RULES.length} active`;
-    renderPrompts();
-  });
-
-  langButtons.forEach((btn) => btn.addEventListener('click', () => {
-    state.lang = btn.dataset.lang;
-    langButtons.forEach((b) => b.setAttribute('aria-pressed', String(b === btn)));
-    renderPrompts();
-  }));
-
-  copyBtn.addEventListener('click', async () => {
-    try {
-      await navigator.clipboard.writeText(promptRuled.textContent);
-      copyBtn.dataset.copied = 'true';
-      copyBtn.textContent = 'Copied';
-      setTimeout(() => { copyBtn.dataset.copied = 'false'; copyBtn.textContent = 'Copy ruled prompt'; }, 1400);
-    } catch {
-      copyBtn.textContent = 'Copy failed — select and copy manually';
-    }
-  });
-}
-
-renderRules();
-renderPrompts();
-bind();