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>

legacy/styles/audit.css

@@ -0,0 +1,26 @@
+/* Responsive audit overrides: preserve the information, not a desktop-width table. */
+@media(max-width:800px){
+  .skills>pre,.install-skills,.prompt-card,.verify-card{min-width:0;max-width:100%}
+  .skills>pre code,.install-skills code,.prompt-card code,.verify-card-source span{overflow-wrap:anywhere;word-break:break-word}
+  .hero-stats{grid-template-columns:minmax(0,1fr) minmax(0,1fr)}
+  .hero-stats div,.hero-stats p{min-width:0}
+  .handoff,.route-table{overflow:visible}
+  .handoff table{min-width:0;table-layout:fixed}
+  .handoff th,.handoff td{overflow-wrap:anywhere}
+  .route-table>div,.route-table button{min-width:0;grid-template-columns:minmax(0,.8fr) minmax(0,.9fr) minmax(0,1.4fr)}
+  .route-table>div>* ,.route-table button>*{min-width:0;overflow-wrap:anywhere}
+}
+@media(max-width:420px){
+  .handoff table,.handoff thead,.handoff tbody,.handoff tr,.handoff th,.handoff td{display:block;width:100%}
+  .handoff thead{position:absolute;width:1px;height:1px;overflow:hidden;clip:rect(0 0 0 0)}
+  .handoff tbody tr{padding:14px 0;border-bottom:1px solid var(--line)}
+  .handoff th,.handoff td{padding:4px 0;border:0}
+  .handoff td::before{display:block;margin-top:7px;color:var(--blue);font:600 9px var(--font-mono);letter-spacing:.08em;text-transform:uppercase}
+  .handoff td:nth-child(2)::before{content:'Contains'}
+  .handoff td:nth-child(3)::before{content:'Why it matters'}
+  .route-table .head{display:none}
+  .route-table button{display:grid;grid-template-columns:1fr;gap:0}
+  .route-table button>*{padding:10px 12px;border-right:0}
+  .route-table button b::before{content:'Profile · ';color:var(--muted)}
+}
+@media(prefers-reduced-motion:reduce){.hero-stats,.handoff,.route-table{scroll-behavior:auto}}

legacy/styles/change-lens.css

@@ -0,0 +1,4 @@
+.change-lens{border:1px solid var(--ink);background:#123042;color:var(--paper);animation:lens-enter .28s ease both}.change-lens>header{display:flex;justify-content:space-between;gap:20px;align-items:start;padding:22px 24px;border-bottom:1px solid #466274}.change-lens span{color:var(--gold);font:700 10px var(--font-mono);letter-spacing:.1em}.change-lens h3{margin:7px 0 0;font-size:clamp(24px,3vw,40px);line-height:1.02;letter-spacing:-.05em}.change-lens>header button{padding:9px 11px;border:1px solid #557080;color:var(--paper);background:transparent;cursor:pointer;font:700 10px var(--font-mono)}.change-lens>header button:hover{color:var(--ink);background:var(--gold)}.change-lens>p{max-width:67ch;margin:0;padding:19px 24px;color:#c6d2d7}.change-rows{display:grid;gap:1px;background:#466274}.change-rows article{display:grid;grid-template-columns:120px minmax(0,1fr) minmax(0,1fr) minmax(220px,.85fr);gap:1px;background:#466274}.change-rows article>*{min-width:0;margin:0;padding:17px;background:#173b4f}.change-rows article>span{color:var(--gold);font:700 10px/1.4 var(--font-mono)}.change-rows b{font:700 10px var(--font-mono);letter-spacing:.07em;text-transform:uppercase}.change-rows div:first-of-type b{color:#e89a8e}.change-rows div:nth-of-type(2) b{color:#9bcba7}.change-rows aside{background:#1d455b}.change-rows aside b{color:var(--gold)}.change-rows p{margin:7px 0 0;color:#d4dfe3;font-size:12px;line-height:1.55}.preview header [data-lens]{color:var(--gold);border-color:var(--gold)}@keyframes lens-enter{from{opacity:.15;transform:translateY(8px)}to{opacity:1;transform:translateY(0)}}@media(max-width:1000px){.change-rows article{grid-template-columns:100px 1fr 1fr}.change-rows aside{grid-column:2/-1}}@media(max-width:620px){.change-lens>header{display:block}.change-lens>header button{margin-top:14px}.change-rows article{grid-template-columns:1fr}.change-rows article>span{padding-bottom:6px}.change-rows aside{grid-column:auto}.change-lens>p{padding:17px}.change-lens>header{padding:18px}.change-rows p{font-size:13px}}@media(prefers-reduced-motion:reduce){.change-lens{animation:none}}
+
+/* A compact, scrollable comparison keeps long skill revisions reviewable. */
+.skill-diff{border:1px solid var(--ink);background:#102b3a;color:var(--paper);animation:lens-enter .28s ease both}.skill-diff>header{display:flex;justify-content:space-between;gap:20px;align-items:start;padding:22px 24px;border-bottom:1px solid #466274}.skill-diff span{color:var(--gold);font:700 10px var(--font-mono);letter-spacing:.1em}.skill-diff h3{margin:7px 0 0;font-size:clamp(24px,3vw,40px);line-height:1.02;letter-spacing:-.05em}.skill-diff>header button{padding:9px 11px;border:1px solid #557080;color:var(--paper);background:transparent;cursor:pointer;font:700 10px var(--font-mono)}.skill-diff>header button:hover{color:var(--ink);background:var(--gold)}.skill-diff>p{margin:0;padding:17px 24px;color:#c6d2d7}.diff-lines{max-height:540px;overflow:auto;border-top:1px solid #466274;font:12px/1.55 var(--font-mono)}.diff-lines p{display:grid;grid-template-columns:42px minmax(0,1fr);gap:11px;margin:0;padding:4px 16px;white-space:pre-wrap;overflow-wrap:anywhere}.diff-lines span{color:#91aab7}.diff-lines .added{color:#d5f1d6;background:#1a4b42}.diff-lines .added span{color:#a9e3ae}.diff-lines .removed{color:#ffd7d0;background:#572f32}.diff-lines .removed span{color:#ffb5a8}.preview header [data-diff]{color:#c6d2d7;border-color:#557080}@media(max-width:620px){.skill-diff>header{display:block}.skill-diff>header button{margin-top:14px}.diff-lines p{grid-template-columns:30px minmax(0,1fr);padding:4px 12px}}@media(prefers-reduced-motion:reduce){.skill-diff{animation:none}}

legacy/styles/chapters.css

@@ -0,0 +1 @@
+:root{--ink:#122534;--paper:#f6f3ed;--line:#d0d5d2;--muted:#65717a;--blue:#215675;--gold:#ebbf58;--red:#a7483f;--font-sans:manrope,arial,sans-serif;--font-mono:'DM Mono',monospace;}*{box-sizing:border-box}body{margin:0;color:var(--ink);background:var(--paper);font:16px/1.6 var(--font-sans)}main{max-width:1400px;margin:auto;padding:0 5vw}.top{display:flex;justify-content:space-between;gap:20px;padding:24px 0;border-bottom:1px solid var(--line);font:700 11px var(--font-mono);letter-spacing:.08em;text-transform:uppercase}.top a{color:var(--ink);text-decoration:none}.hero{padding:100px 0 70px;max-width:950px}.eyebrow{color:var(--red);font:700 11px var(--font-mono);letter-spacing:.12em;text-transform:uppercase}.hero h1{margin:16px 0;font-size:clamp(52px,9vw,126px);line-height:.9;letter-spacing:-.07em}.hero h1 em,h2 em{font:400 .9em Georgia,serif;color:var(--red)}.hero p{max-width:680px;color:var(--muted);font-size:20px}.grid{display:grid;grid-template-columns:repeat(3,1fr);gap:1px;background:var(--line);border:1px solid var(--line);margin-bottom:100px}.card{min-height:220px;padding:28px;background:var(--paper)}.card b{color:var(--red);font:24px var(--font-mono)}.card h2{margin:18px 0 8px;font-size:25px;letter-spacing:-.04em}.card p{margin:0 0 14px;color:var(--muted)}.card a{color:var(--blue);font-weight:700}.model,.pipeline,.practice{display:grid;grid-template-columns:1fr 2fr;gap:50px;padding:80px 0;border-top:1px solid var(--line)}.model h2,.pipeline h2,.practice h2{margin:0;font-size:clamp(34px,5vw,70px);line-height:.95;letter-spacing:-.06em}.panel{padding:28px;background:var(--ink);color:var(--paper)}.panel strong{display:block;color:var(--gold);font:700 12px var(--font-mono);letter-spacing:.1em}.panel code{display:block;margin-top:18px;color:#d6e1e4;font:14px/1.8 var(--font-mono);white-space:pre-wrap}.steps{display:grid;gap:1px;background:var(--line)}.steps article{display:grid;grid-template-columns:70px 1fr;gap:20px;padding:20px;background:var(--paper)}.steps b{color:var(--red);font:20px var(--font-mono)}.steps strong{display:block}.steps span{color:var(--muted)}.links{display:flex;flex-wrap:wrap;gap:10px;margin:28px 0 70px}.links a{padding:10px 13px;color:var(--ink);border:1px solid var(--ink);text-decoration:none;font:11px var(--font-mono);text-transform:uppercase}.links a:hover{color:var(--paper);background:var(--ink)}footer{padding:30px 0 70px;color:var(--muted);font-size:13px}@media(max-width:800px){.grid,.model,.pipeline,.practice{grid-template-columns:1fr}.hero{padding:65px 0 45px}.model,.pipeline,.practice{gap:25px;padding:55px 0}}@media(max-width:520px){main{padding:0 16px}.top span{display:none}.hero h1{font-size:56px}.hero p{font-size:17px}.card{min-height:0}.steps article{grid-template-columns:45px 1fr}}

legacy/styles/skills.css

@@ -0,0 +1 @@
+.top > *{min-width:0}.top a{overflow-wrap:anywhere}.package-hint{max-width:27ch;color:var(--muted)}.package-workbench{display:grid;grid-template-columns:minmax(190px,.85fr) minmax(0,1.3fr);min-width:0;background:var(--ink);border:1px solid var(--ink);box-shadow:10px 10px 0 color-mix(in srgb,var(--gold) 55%,transparent)}.package-tree{padding:22px 16px;border-right:1px solid #426070;min-width:0}.package-tree>p,.package-preview>span{margin:0 0 14px;color:var(--gold);font:700 11px/1.35 var(--font-mono);letter-spacing:.1em}.package-tree button{display:grid;grid-template-columns:minmax(0,1fr) auto;align-items:center;gap:8px;width:100%;padding:12px 8px;border:0;border-left:2px solid transparent;background:transparent;color:#d6e1e4;text-align:left;cursor:pointer;transition:background .2s ease,border-color .2s ease,transform .2s ease}.package-tree button:hover,.package-tree button:focus-visible,.package-tree button.active{border-left-color:var(--gold);background:#1f3a4b;outline:0}.package-tree button:hover{transform:translateX(3px)}.package-tree code{min-width:0;overflow-wrap:anywhere;font:700 13px/1.4 var(--font-mono)}.package-tree small{color:#aebfc7;font:11px/1.25 var(--font-sans);text-align:right}.package-preview{min-width:0;padding:26px;background:#173245;color:var(--paper)}.package-preview h3{margin:0 0 8px;font-size:clamp(24px,3vw,38px);line-height:1.02;letter-spacing:-.045em}.package-preview p{max-width:52ch;margin:0;color:#d6e1e4}.package-preview pre{max-width:100%;margin:20px 0 0;padding:15px;overflow:auto;border:1px solid #466274;background:#102837;color:#d6e1e4;font:12px/1.55 var(--font-mono)}.package-preview.is-swapping{animation:package-preview-in .34s ease both}@keyframes package-preview-in{from{opacity:.25;transform:translateY(7px)}to{opacity:1;transform:translateY(0)}}.links a{transition:background .2s ease,color .2s ease,transform .2s ease}.links a:hover{transform:translateY(-2px)}@media(max-width:800px){.package-workbench{grid-template-columns:1fr}.package-tree{border-right:0;border-bottom:1px solid #426070}.package-preview{padding:22px}}@media(max-width:520px){.top{gap:12px}.top a{font-size:10px}.package-tree{padding:18px 10px}.package-tree button{padding:12px 6px}.package-tree small{display:none}.package-preview{padding:18px}.package-preview pre{font-size:11px}}@media(prefers-reduced-motion:reduce){*,*::before,*::after{scroll-behavior:auto!important;animation-duration:.01ms!important;animation-iteration-count:1!important;transition-duration:.01ms!important}}