Add anti-pattern detection CLI, browser visualizer, gallery page, and build DRY refactor

- Anti-pattern detector script (source/skills/critique/scripts/detect-antipatterns.mjs):
  CLI tool that scans files/dirs for UI anti-patterns via regex. Detects side-tab
  accent borders and border-accent-on-rounded patterns across Tailwind, CSS, JSX.
  Context-aware: skips safe elements (blockquotes, nav, inputs, code), neutral
  colors, and adjusts thresholds based on border-radius co-occurrence.

- Browser visualizer (public/js/detect-antipatterns-browser.js):
  Drop-in script that highlights anti-patterns directly in the browser with
  labeled overlays. Two modes: "static" (regex, matches CLI) and "computed"
  (getComputedStyle, catches CSS cascade). Scans both inline styles and
  <style> blocks.

- Gallery of Shame (public/gallery.html):
  Standalone page showcasing 11 AI anti-pattern examples with thumbnails
  and links. Anti-pattern example pages updated from 1080x1080 Twitter
  format to responsive layouts, labels removed, screenshots retaken at 16:10.

- Critique skill updated to run detector before manual review.

- Build system: skills now support scripts/ directories alongside reference/.
  All 8 provider transformers refactored to use shared.js (DRY).

- 58 new tests covering detection logic, fixtures, CLI integration.

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

scripts/build.js

@@ -82,6 +82,7 @@ async function buildStaticSite() {
   const entrypoints = [
     path.join(ROOT_DIR, 'public', 'index.html'),
     path.join(ROOT_DIR, 'public', 'cheatsheet.html'),
+    path.join(ROOT_DIR, 'public', 'gallery.html'),
   ];
   const outdir = path.join(ROOT_DIR, 'build');
 
@@ -383,7 +384,6 @@ async function build() {
 
   // Remove existing and copy fresh
   if (fs.existsSync(skillsDest)) fs.rmSync(skillsDest, { recursive: true });
-
   copyDirSync(skillsSrc, skillsDest);
 
   console.log(`📋 Synced to .claude/: skills`);