Copy buttons on code blocks + merge Skills and Tutorials under Docs

Two small-to-medium improvements bundled together.

1. Copy buttons on every rendered code block.
   - render-markdown.js: wrap each fenced code block in a .code-block-wrap
     container and emit a <button class="code-block-copy" data-copy="...">
     alongside it. Button text is set via CSS ::before content so the
     'Copy' / 'Copied' label is a single toggle class (.is-copied).
   - render-page.js: 12-line inline script at the end of the body wires
     a delegated click handler that calls navigator.clipboard.writeText
     and flips .is-copied for 1.5s.
   - sub-pages.css: button styles matching the dark terminal palette,
     hidden until you hover the code block, accent-colored success state.

2. Merge Skills and Tutorials under a single Docs nav item.
   - Rename the Skills nav link to 'Docs' in every header (partial +
     4 hand-authored pages). Drop the separate Tutorials nav item; it
     now lives inside Docs. Anti-patterns stays as its own top-level.
   - scripts/build-sub-pages.js: replace renderSkillsSidebar and
     renderTutorialsSidebar with a unified renderDocsSidebar that shows
     every skill category followed by a Tutorials group. Takes a
     current descriptor of shape { kind: 'skill'|'tutorial', id|slug }
     so both skill detail and tutorial detail pages can mark the active
     row. activeNav on every /skills/* and /tutorials/* page is now
     'docs'; the shared site header's data-nav matches.

Verified: /skills/polish and /tutorials/getting-started both render
with the unified Docs sidebar (all 21 skills grouped by category +
both tutorials as a final group). The Docs nav item is aria-current
on both. Copy buttons appear on every fenced code block and toggle
to 'Copied' when clicked.

scripts/build-sub-pages.js

@@ -110,15 +110,19 @@ ${bodyHtml}
 }
 
 /**
- * Render the left sidebar used across the /skills section.
- * Shows every skill grouped by category. Pass the current skill id to
- * mark it with aria-current="page".
+ * Render the unified Docs sidebar used across /skills and /tutorials.
+ * Shows every skill grouped by category, then tutorials as a final
+ * group. Pass the current page identifier so we can mark it:
+ *
+ *   { kind: 'skill', id: 'polish' }
+ *   { kind: 'tutorial', slug: 'getting-started' }
+ *   null (no current page)
  */
-function renderSkillsSidebar(skillsByCategory, currentSkillId = null) {
+function renderDocsSidebar(skillsByCategory, tutorials, current = null) {
   let html = `
-<aside class="skills-sidebar" aria-label="All skills">
+<aside class="skills-sidebar" aria-label="Documentation">
   <div class="skills-sidebar-inner">
-    <p class="skills-sidebar-label">Skills</p>
+    <p class="skills-sidebar-label">Docs</p>
 `;
 
   for (const category of CATEGORY_ORDER) {
@@ -130,8 +134,26 @@ function renderSkillsSidebar(skillsByCategory, currentSkillId = null) {
       <ul class="skills-sidebar-list">
 ${list
   .map((s) => {
-    const current = s.id === currentSkillId ? ' aria-current="page"' : '';
-    return `        <li><a href="/skills/${s.id}"${current}>/${escapeHtml(s.id)}</a></li>`;
+    const isCurrent = current?.kind === 'skill' && current.id === s.id;
+    const attr = isCurrent ? ' aria-current="page"' : '';
+    return `        <li><a href="/skills/${s.id}"${attr}>/${escapeHtml(s.id)}</a></li>`;
+  })
+  .join('\n')}
+      </ul>
+    </div>
+`;
+  }
+
+  if (tutorials && tutorials.length > 0) {
+    html += `
+    <div class="skills-sidebar-group" data-category="tutorials">
+      <p class="skills-sidebar-group-title">Tutorials</p>
+      <ul class="skills-sidebar-list">
+${tutorials
+  .map((t) => {
+    const isCurrent = current?.kind === 'tutorial' && current.slug === t.slug;
+    const attr = isCurrent ? ' aria-current="page"' : '';
+    return `        <li><a href="/tutorials/${t.slug}"${attr}>${escapeHtml(t.title)}</a></li>`;
   })
   .join('\n')}
       </ul>
@@ -292,32 +314,6 @@ function renderRuleCard(rule) {
     </article>`;
 }
 
-/**
- * Render the tutorials sidebar: list of tutorial pages in order, with
- * the current tutorial marked via aria-current.
- */
-function renderTutorialsSidebar(tutorials, currentSlug = null) {
-  const entries = tutorials
-    .map((t) => {
-      const current = t.slug === currentSlug ? ' aria-current="page"' : '';
-      return `        <li><a href="/tutorials/${t.slug}"${current}>${escapeHtml(t.title)}</a></li>`;
-    })
-    .join('\n');
-
-  return `
-<aside class="skills-sidebar tutorials-sidebar" aria-label="Tutorials">
-  <div class="skills-sidebar-inner">
-    <p class="skills-sidebar-label">Tutorials</p>
-    <div class="skills-sidebar-group">
-      <p class="skills-sidebar-group-title">Walk-throughs</p>
-      <ul class="skills-sidebar-list">
-${entries}
-      </ul>
-    </div>
-  </div>
-</aside>`;
-}
-
 /**
  * Render the /tutorials index main content.
  */
@@ -431,16 +427,16 @@ export async function generateSubPages(rootDir) {
 
   const generated = [];
 
-  // Skills index: docs-browser layout with sticky sidebar.
+  // Skills index: docs-browser layout with unified sidebar.
   {
-    const sidebar = renderSkillsSidebar(data.skillsByCategory, null);
+    const sidebar = renderDocsSidebar(data.skillsByCategory, data.tutorials, null);
     const main = renderSkillsOverviewMain(data.skillsByCategory);
     const html = renderPage({
       title: 'Skills | Impeccable',
       description:
         '21 commands that teach your AI harness how to design. Browse by category: create, evaluate, refine, simplify, harden, system.',
       bodyHtml: wrapInDocsLayout(sidebar, main),
-      activeNav: 'skills',
+      activeNav: 'docs',
       canonicalPath: '/skills',
       bodyClass: 'sub-page skills-layout-page',
     });
@@ -451,7 +447,7 @@ export async function generateSubPages(rootDir) {
 
   // Skills detail pages: same docs-browser shell as the overview.
   for (const skill of data.skills) {
-    const sidebar = renderSkillsSidebar(data.skillsByCategory, skill.id);
+    const sidebar = renderDocsSidebar(data.skillsByCategory, data.tutorials, { kind: 'skill', id: skill.id });
     const main = renderSkillDetail(skill, data.knownSkillIds);
     const title = `/${skill.id} | Impeccable`;
     const description = skill.editorial?.frontmatter?.tagline || skill.description;
@@ -459,7 +455,7 @@ export async function generateSubPages(rootDir) {
       title,
       description,
       bodyHtml: wrapInDocsLayout(sidebar, main),
-      activeNav: 'skills',
+      activeNav: 'docs',
       canonicalPath: `/skills/${skill.id}`,
       bodyClass: 'sub-page skills-layout-page',
     });
@@ -486,15 +482,15 @@ export async function generateSubPages(rootDir) {
     generated.push(out);
   }
 
-  // Tutorials index.
+  // Tutorials index (under the unified Docs umbrella).
   if (data.tutorials.length > 0) {
-    const sidebar = renderTutorialsSidebar(data.tutorials, null);
+    const sidebar = renderDocsSidebar(data.skillsByCategory, data.tutorials, null);
     const main = renderTutorialsIndexMain(data.tutorials);
     const html = renderPage({
       title: 'Tutorials | Impeccable',
       description: `${data.tutorials.length} short, opinionated walk-throughs of the highest-leverage Impeccable workflows.`,
       bodyHtml: wrapInDocsLayout(sidebar, main),
-      activeNav: 'tutorials',
+      activeNav: 'docs',
       canonicalPath: '/tutorials',
       bodyClass: 'sub-page skills-layout-page tutorials-page',
     });
@@ -505,13 +501,13 @@ export async function generateSubPages(rootDir) {
 
   // Tutorial detail pages.
   for (const tutorial of data.tutorials) {
-    const sidebar = renderTutorialsSidebar(data.tutorials, tutorial.slug);
+    const sidebar = renderDocsSidebar(data.skillsByCategory, data.tutorials, { kind: 'tutorial', slug: tutorial.slug });
     const main = renderTutorialDetail(tutorial, data.knownSkillIds);
     const html = renderPage({
       title: `${tutorial.title} | Tutorials | Impeccable`,
       description: tutorial.description || tutorial.tagline || '',
       bodyHtml: wrapInDocsLayout(sidebar, main),
-      activeNav: 'tutorials',
+      activeNav: 'docs',
       canonicalPath: `/tutorials/${tutorial.slug}`,
       bodyClass: 'sub-page skills-layout-page tutorials-page',
     });

scripts/lib/render-markdown.js

@@ -56,9 +56,12 @@ export function createRenderer({ knownSkillIds = new Set(), currentSkillId = nul
   };
 
   // Fenced code blocks — minimal glass-terminal styling, no syntax highlighter in v1.
+  // Wrapped in a container with a copy button; click handling lives in the
+  // page-level inline script added by render-page.js.
   renderer.code = ({ text, lang }) => {
     const langClass = lang ? ` code-block--${escapeAttr(lang)}` : '';
-    return `<pre class="code-block${langClass}"><code>${escapeHtml(text)}</code></pre>\n`;
+    const copyValue = escapeAttr(text);
+    return `<div class="code-block-wrap"><pre class="code-block${langClass}"><code>${escapeHtml(text)}</code></pre><button class="code-block-copy" type="button" data-copy="${copyValue}" aria-label="Copy to clipboard"></button></div>\n`;
   };
 
   return renderer;

scripts/lib/render-page.js

@@ -102,6 +102,19 @@ export function renderPage({
   <main id="main">
 ${bodyHtml}
   </main>
+  <script>
+    // Copy buttons on rendered code blocks
+    document.addEventListener('click', (e) => {
+      const btn = e.target.closest('[data-copy]');
+      if (!btn) return;
+      const text = btn.getAttribute('data-copy');
+      if (!text) return;
+      navigator.clipboard.writeText(text).then(() => {
+        btn.classList.add('is-copied');
+        setTimeout(() => btn.classList.remove('is-copied'), 1500);
+      }).catch(() => {});
+    });
+  </script>
 </body>
 </html>
 `;