Training: 6 riquadri (Rehab, Holistic Class, Reformer Class, Coaching)

- trainings.ts: da 4 a 6 riquadri (One to One, Small Group max 4, Rehab,
  Holistic Class ex Performance Class, Reformer Class nuova, Coaching ex Fit
  Remote); anche in Homepage. CTA "Scopri" verso le pagine dettaglio.
- services.ts: aggiunte pagine dettaglio rehab/holistic-class/reformer-class con
  flag grid:false (fuori dalla griglia /services ma raggiungibili come
  approfondimento dai riquadri Training). Rehab torna consultabile su /services/rehab.
- index/[slug] servizi filtrano grid!==false; rimosso redirect /services/rehab.
- Footer Training portato a 6 voci con ancore aggiornate; TrainingCards tone-safe.
- Foto Reformer dal documento cliente; card Rehab/Holistic/Coaching con
  immagini placeholder (da confermare). Migrazione DB idempotente per label/meta.

Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_017rUFjLYZ1TZ7DgxwTR5q9K

src/pages/services/[slug].astro

@@ -13,7 +13,7 @@ export const prerender = false;
 const service = getService(Astro.params.slug!);
 if (!service) return new Response(null, { status: 404 });
 const slug = service.slug;
-const others = services.filter((p) => p.slug !== service.slug);
+const others = services.filter((p) => p.slug !== service.slug && p.grid !== false);
 const images = import.meta.glob<{ default: ImageMetadata }>('../../assets/img/program-*.jpg', { eager: true });
 const imgOf = (slug: string) => Object.entries(images).find(([p]) => p.includes(`program-${slug}.`))?.[1]?.default;
 const heroImg = imgOf(service.slug);