feat(capture): improve capture quality + clean up CLAUDE.md

Capture improvements:
- Font weights via document.fonts API + DOM sampling (variable font detection)
- Section background-image extraction (no more false #FFFFFF on hero photos)
- Detected libraries surfaced in CLAUDE.md brand summary
- Structured visible-text.txt with [tag] prefixes, cookie/nav noise filtered
- tokens.json cleaned: removed images/paragraphs/icons (duplicated elsewhere),
  filtered sections to heading-only, trimmed cssVariables to design-relevant
- Removed redundant scroll pass in htmlExtractor (2-5s faster per capture)
- Font cap at 20 families, Placeholder/Fallback fonts filtered

CLAUDE.md rewrite:
- Removed prescriptive tone ("use exact strings" → "rephrase freely")
- Removed fluff sections (How to Create, DESIGN.md warning, Example Prompts,
  Source Patterns)
- asset-descriptions.md promoted to first data row
- Removed assets-catalog.json from inventory

Skill fixes:
- Dead shader refs → point to packages/shader-transitions/README.md
- Google Fonts import in techniques.md → local @font-face placeholder
- Added Stripe DESIGN.md as light-brand example
- Removed HANDOFF.md generation from step-7
- Updated step-1 for new font weight + visible-text formats

packages/cli/src/capture/htmlExtractor.ts

@@ -17,22 +17,9 @@ export async function extractHtml(
 ): Promise<ExtractedHtml> {
   const settleTime = opts.settleTime ?? DEFAULT_SETTLE_TIME;
 
-  // Step 1: Trigger lazy loading by scrolling through the page
-  await page.evaluate(`(async () => {
-    var pageHeight = document.body.scrollHeight;
-    var viewportH = window.innerHeight;
-    var step = Math.floor(viewportH * 0.7);
-    for (var y = 0; y < pageHeight + viewportH; y += step) {
-      window.scrollTo(0, y);
-      await new Promise(function(r) { setTimeout(r, 200); });
-    }
-    window.scrollTo(0, pageHeight);
-    await new Promise(function(r) { setTimeout(r, 300); });
-    window.scrollTo(0, 0);
-    await new Promise(function(r) { setTimeout(r, 300); });
-  })()`);
-
-  // Re-measure after lazy load
+  // Lazy-load scroll removed — index.ts already scrolls before calling extractHtml.
+  // Images are loaded by the time we get here.
+  // Settle wait kept as buffer before DOM extraction.
   await new Promise((r) => setTimeout(r, settleTime));
 
   // Step 2: Inline external stylesheets