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/data/site.ts

@@ -19,9 +19,11 @@ export const site = {
   ],
   footerTraining: [
     { label: "One to one", href: "/training#one-to-one" },
-    { label: "Small groups", href: "/training#small-groups" },
-    { label: "Performance class", href: "/training#performance-class" },
-    { label: "Fit remote", href: "/training#fit-remote" },
+    { label: "Small group", href: "/training#small-groups" },
+    { label: "Rehab", href: "/training#rehab" },
+    { label: "Holistic class", href: "/training#holistic-class" },
+    { label: "Reformer class", href: "/training#reformer-class" },
+    { label: "Coaching", href: "/training#coaching" },
   ],
   footerServices: [
     { label: "Personal Training", href: "/services/personal-training" },