[cmena92]

Closes #8

What is here

• One source for dressing the companion. The logic of componer (Arte de las siete prendas sobre los cuerpos #16) moves to www/games/companero/prendas.js, used by the browser and by design/companero/prendas.mjs. Proof that nothing changed: the Chrome check still prints 56 combinaciones, 0 superposiciones and the preview's SHA-256 is the same before and after. New: an unknown garment is skipped instead of breaking the animal.
• exportar.mjs brings the garments, the catalogue and the anchors to arte.js.
• The clothes region is visible: head, neck and body, each with a «None» card. Every card draws the companion as it would look with that garment in its slot.
• The design first, the clothes after, so a design never recolours a garment.
• Garments are bought through the same tocar as animals and designs (Diseños exclusivos de color para el compañero #7). The outfit stays when the animal changes.
• Every card (animals and designs too) now tells a screen reader its name and its price, or that it is yours and in use.
• Garment and slot names in the five languages; prendas.js added to the entry's files.

Checks run locally

• node tools/test-companero.js: 103 green. New: arte.js carries the same clothes data as design/companero/; the app dresses the 56 pairs exactly as the art Chrome measures; an unknown garment is skipped. In a browser: the three slots, the seven garments and three «None» cards, a price in the screen-reader label, buying the bow (500 → 420) and wearing it, the crown replacing the cap with the bow still on (→ 110), «None» on the head, wearing an owned cap again with no charge or question, «in use» in its label, the outfit kept on the capybara and after a reload.
• node tools/test.js: 5,482 green · ./tools/browser-check.sh: 50 of 50.
• Screenshots of four species with outfits across the three slots, and the clothes region, checked by the owner's agent.