feat: add hallmark design skill

Anti-AI-slop design skill (greenfield pages, audits, redesigns, design
extraction from URLs/screenshots) -- installed and validated in an
earlier session, was sitting untracked. Full reference library:
components, macrostructures, themes, genres, verbs (audit/redesign).

Co-Authored-By: Claude Sonnet 5 <noreply@anthropic.com>

skills/hallmark/references/macrostructures/11-catalogue.md

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+## 11 · Catalogue
+
+Uniform grid of variations of the same thing — typefaces, colour palettes, product SKUs. The page is a visual index of inventory.
+
+- **Heading:** brand mark + tagline only; no big display.
+- **Body:** grid of identical-sized cards (3–5 per row), each one variant of the core product.
+- **Divider:** hairline rules between rows; sometimes a category label band.
+- **Button:** card-internal link to detail page; no global CTA.
+- **Image:** specimen thumbnail per card, or a swatch.
+- **Reveal:** none.
+
+Reach for it for foundries, palette generators, font shops, colour systems, capsule collections.
+
+Avoid for narrative brands. Catalogue treats every item as equal — wrong for products with hierarchy.
+
+Reference: Klim Type Foundry, Pangram Pangram, Coolors palettes.
+
+**Sample opening lines** (imitate the *specificity* — Catalogue openings are inventory headers, dated, with a count):
+> *"Today's loaves."* — Maple Street Bread (test 03) — two words, ownership of the day
+> *"Five collections, in store now."* — names the count and the where
+> *"Thirty-eight items · Spring 2026 · all hand-stitched."* — count, date, qualifier; no adjectives
+
+---