release: v0.31.0 — family-contacts integration & settings restructure

- Family member records now store phone, email, and birthday, auto-synced
  to Contacts and Birthdays modules (PR #99 by @rafaelfoster)
- Settings gets dedicated Family and API Tokens tabs (admin-only)
- Avatar editor redesigned with icon buttons; tab bar fits standard width
- Dentist calendar icon normalised to 'tooth'; theme reset bug fixed
- i18n: missing family field translations added to 12 locales

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

public/locales/it.json

@@ -734,13 +734,13 @@
         "shared": "Condiviso"
       }
     },
-    "memberPhoneLabel": "Phone number (optional)",
-    "memberEmailLabel": "Email (optional)",
-    "memberBirthDateLabel": "Birthday date (optional)",
-    "memberContactBirthdayHint": "This member is automatically synchronized with Contacts and Birthdays.",
-    "memberBirthDateInvalid": "Use a valid birthday date in the selected date format.",
-    "memberPhoneMeta": "Phone: {{value}}",
-    "memberBirthdayMeta": "Birthday: {{date}}"
+    "memberPhoneLabel": "Numero di telefono (opzionale)",
+    "memberEmailLabel": "E-mail (opzionale)",
+    "memberBirthDateLabel": "Data di nascita (opzionale)",
+    "memberContactBirthdayHint": "Questo membro viene sincronizzato automaticamente con i Contatti e i Compleanni.",
+    "memberBirthDateInvalid": "Usa una data di nascita valida nel formato selezionato.",
+    "memberPhoneMeta": "Telefono: {{value}}",
+    "memberBirthdayMeta": "Compleanno: {{date}}"
   },
   "login": {
     "tagline": "Pianificazione familiare. Sicura. Rispettosa della privacy. Open source.",