Pin Bloc 0 and Arrivant juste at top of relations list, sort others alphabetically

- Rename "Newbie" to "Arrivant juste"
- Base friends (Bloc 0, Arrivant juste) always stay at the top
- User-added relations are sorted below them

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

app/components/gratewizard/GwCRA.vue

@@ -134,7 +134,7 @@ import { Block0Date, getDays, getRatio, dateToString, fr, type Friend, type Tabl
 const todayDate = dateToString(new Date());
 const baseFriends: Friend[] = [
   { name: 'Bloc 0', date: Block0Date },
-  { name: 'Newbie', date: todayDate },
+  { name: 'Arrivant juste', date: todayDate },
 ];
 
 const price = useLocalStorage('price', '1');