Hero one-to-one: titolo "Personal Training" separato dall'H2

Campo opzionale Service.heroTitle: l'hero (H1) di /services/one-to-one
mostra "PERSONAL TRAINING" mentre H2/card restano "One to One" (tag
condiviso service.one-to-one.title invariato). Nessuna migrazione DB.

Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>

src/pages/services/[slug].astro

@@ -23,7 +23,7 @@ const categoryIndexes = [1, 2, 3, 4];
 const tones = ['tan', 'taupe', 'dark'];
 ---
 <Base title={t(`service.${slug}.title`)} description={t(`service.${slug}.excerpt`)}>
-  <PageHero title={t(`service.${slug}.title`).toUpperCase()} bgImage={heroImg} />
+  <PageHero title={(service.heroTitle ?? t(`service.${slug}.title`)).toUpperCase()} bgImage={heroImg} />
 
   <section class="section">
     <div class="container prog">