Reconcile questionnaire branch with main's site split and redesign

Post-rebase repairs after main moved 226 commits (site/ split to the
private impeccable-site repo, DESIGN.md spec now eight sections, register
extraction replaced by extractSectionValue, seed mode rewritten):

- document.md: transplant this branch's seed pipeline (assets, interview,
  visual cues, picker) onto main's rewritten file; adopt the canonical
  section vocabulary. The interplay with new-work's workshop is left for
  PR review.
- picker: vendor kinpaku tokens/kit CSS, hero art, and favicon under
  picker/ (site/ no longer exists here); drop the sharp resize step and
  ship the compressed JPEG directly; declare astro/sharp-free deps.
- picker-server: read the register via extractSectionValue('Register')
  since extractRegister is gone from context.mjs.
- palette.mjs / utils.js / test-suites.mjs / package.json / release.mjs:
  rebuild as main's version plus this branch's additions, undoing hunks
  the -X theirs replay had clobbered.
- craft.md / shape.md: reset to main (this branch's net change was zero).
- progress bar: animate transform instead of width (design hook finding).

Validation: bun run build green (prose validators clean), bun run test
198/198, picker-server suite 7/7.

AI-assisted (agent-implemented, maintainer-directed).

Co-authored-by: Cursor <cursoragent@cursor.com>

skill/scripts/picker-server.mjs

@@ -10,7 +10,7 @@ import { readFile, mkdir, stat, writeFile } from 'node:fs/promises';
 import net from 'node:net';
 import path from 'node:path';
 import { fileURLToPath } from 'node:url';
-import { extractRegister } from './context.mjs';
+import { extractSectionValue } from './context.mjs';
 import { SEEDS } from './palette.mjs';
 const scriptDir = path.dirname(fileURLToPath(import.meta.url));
 const pickerDir = path.join(scriptDir, 'picker');
@@ -173,7 +173,8 @@ if (options.help) {
 let register = 'brand';
 try {
   const product = await readFile(path.resolve(process.cwd(), 'PRODUCT.md'), 'utf8');
-  register = extractRegister(product) || register;
+  const value = (extractSectionValue(product, 'Register') || '').toLowerCase();
+  if (value === 'brand' || value === 'product') register = value;
 } catch {
   // A missing or unreadable PRODUCT.md keeps the brand preview default.
 }