Feinschliff: Navigation, Hero-Center, Personen-Karten & Tokens

Querschnitt-Verbesserungen ohne eigenes Feature:
- Navigation: Untermenü-Trenner (separator) + Mitmachen-Link, rote Akzent-Leiste
- Startseiten-Hero zentriert (align center, ohne Hero-CTAs); .hero--center-Styles
- person-card/person-grid: Kontakt-Layout, 3-Spalten-Raster (Startseite)
- jsonld: geo aus club.json; cta unterstützt #hash-Anker
- verein: hartcodierten Maps-Link/Inline-CTA entfernt, .facility zentriert
- tokens: Sepia-Farben für Timeline; base: globale p-max-width entfernt
- historie: Timeline um 2024/2025 ergänzt
- Icons link-45deg (Footer) und robot (meta) nachgereicht

Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01HGzc6GhWhmLJt1jC2q1SRZ

public/assets/icons/link-45deg.svg

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public/assets/icons/robot.svg

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