Refresh Vinci's creative story

[mbanderas]

What changed

• Repositioned Maestro: Vinci as a creative design partner for websites, apps, product experiences, brands, decks, reports, campaigns, and visual systems.
• Rewrote the README around creative direction, taste, character, art direction, and final polish.
• Removed narrow interface design and front-of-house evidence-led language from public descriptions.
• Expanded Codex, Claude, npm, and skill metadata to match Vinci's full creative range.
• Strengthened the CiteSurge section around helping brands become the answer people find in AI search.
• Bumped the package and plugin version to 1.3.1.

Why

Vinci is broader than interface design, and its public story should sound like a creative product rather than an audit methodology. The new positioning explains the ambition first while keeping validation and accessibility as delivery standards behind the work.

Validation

• npm run check
• Plugin validator
• Skill validator
• git diff --check