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>

scripts/build-picker.mjs

@@ -3,18 +3,16 @@
 import { execFileSync } from 'node:child_process';
 import { cp, copyFile, mkdir, rm } from 'node:fs/promises';
 import path from 'node:path';
-import sharp from 'sharp';
 import { fileURLToPath } from 'node:url';
 
 const root = path.resolve(path.dirname(fileURLToPath(import.meta.url)), '..');
 const buildDir = path.join(root, 'build-picker');
 const outputDir = path.join(root, 'skill/scripts/picker');
-const faviconSource = path.join(root, 'site/public/favicon.svg');
+// Static assets vendored under picker/assets/ (the site now lives in the
+// private impeccable-site repo, so the picker carries its own copies).
+const faviconSource = path.join(root, 'picker/assets/favicon.svg');
 const faviconOutput = path.join(outputDir, 'favicon.svg');
-const heroSource = path.join(
-  root,
-  'site/public/assets/neo-kinpaku/candidates/finalists/m-01-v2-01-light.png',
-);
+const heroSource = path.join(root, 'picker/assets/hero-light.jpg');
 const heroOutput = path.join(outputDir, 'assets/hero-light.jpg');
 
 await rm(buildDir, { recursive: true, force: true });
@@ -28,10 +26,7 @@ await rm(outputDir, { recursive: true, force: true });
 await cp(buildDir, outputDir, { recursive: true });
 await mkdir(path.dirname(heroOutput), { recursive: true });
 await copyFile(faviconSource, faviconOutput);
-await sharp(heroSource)
-  .resize({ width: 1536, withoutEnlargement: true })
-  .jpeg({ quality: 80, mozjpeg: true })
-  .toFile(heroOutput);
+await copyFile(heroSource, heroOutput);
 await rm(buildDir, { recursive: true, force: true });
 
 console.log(`Built ${path.relative(root, outputDir)}/`);