feat(lab): add Barber / Hairstylist profile (kind 35014)
A full Lab role, mirroring how Event Organizer was added:
- kinds: SKATE_BARBER_KIND 35014, self-tag 'skatebarber', BARBER_*_LABELS,
SkateBarber + parseSkateBarber (studio, books_open).
- craft config at /become/barber (cyan accent, Sparkles icon), Lab tab
'Barbers', filter sections (services/styles/setting), empty state, FAB item.
- Lab pipeline: useLabProfiles kind/tag/parser, LabPage ServiceType
'barbering' + ACCENT/maps/counts, CoachDetailPage per-role maps + studio &
books-open block, LabLinkField label, growth stats + Community Stats card.
- No crew-scene strip for barbers (LabCrewsStrip returns null).
- Documented in NIP.md; smoke test now boots /become/barber.
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