Feat: Rechnungsadresse — Profil, Upgrade-Modal Hinweis, Rechnung-erstellen-Button in Upgrade-Cards (SW by-v967)

backend/routes/auth.py

@@ -241,7 +241,8 @@ async def me(user=Depends(get_current_user)):
                       is_founder, is_partner, founder_number, is_founder_pending,
                       notes_ki_enabled, gassi_stunde_push,
                       preferred_theme, subscription_tier,
-                      subscription_expires_at, subscription_cancelled_at, needs_dog_selection
+                      subscription_expires_at, subscription_cancelled_at, needs_dog_selection,
+                      billing_address
                FROM users WHERE id=?""",
             (user["id"],)
         ).fetchone()