The coach portfolio/experience/payments treatment is now a shared layer instead
of 12 copies:
- src/lib/labExtras.ts: parseLabExtras + shared option sets (languages,
availability, structured rate, payment methods, booking fee, gallery/reel).
- components/LabExtrasFields.tsx: the self-contained form block — prefills from
the existing event, owns its state, and reports the managed tags via onChange.
- components/LabExtrasSection.tsx: the detail block (all crafts).
Wired into CraftProfileForm (the 8 data-driven crafts) and the four bespoke
pages (filmer/editor/photographer/builder); CoachDetailPage renders the shared
section for every craft. Per-craft buying units (rateUnits) are set per craft in
becomeRoles.tsx (e.g. barber 'per cut', musician 'per gig', photographer 'per
shoot'). /lab facet filters now read parseLabExtras, so availability/languages
filter across crafts.
Coach-specific formats/levels/ages/credentials remain coach-only. Money stays
custody-free: declared methods + a booking fee paid directly to the provider.
