fix(loyalty): translate transaction types + notes on card detail page

Card detail transaction history now shows translated transaction type
labels and system-generated notes. Uses server-rendered labels object
(same pattern as terminal) to avoid async i18n flicker.

- Transaction types: server-rendered txLabels lookup (all 11 types)
- Notes: txNotes lookup maps English DB strings to translated text
  (e.g., "Welcome bonus on enrollment" → "Bonus de bienvenue...")
- Added welcome_bonus_note key to all 4 locales

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

app/modules/loyalty/locales/lb.json

@@ -190,7 +190,8 @@
         "points_adjustment": "Punkten ugepasst",
         "points_expired": "Punkten ofgelaf",
         "card_deactivated": "Deaktivéiert",
-        "reward_redeemed": "Belounung agelées"
+        "reward_redeemed": "Belounung agelées",
+        "welcome_bonus_note": "Wëllkommsbonus bei der Umeldung"
     },
     "shared": {
         "analytics": {