feat: Side menu dinámico, login social y traducciones hero

- app.component: menú lateral con roles de usuario, ChangeDetectorRef
  para re-render tras login, integración OneSignal al iniciar sesión
- auth/login: botones Google y Apple con estilos, navegación corregida
- auth/register y forgot: mejoras de UX y navegación
- landing: sombra en botones del footer
- i18n: claves hero (select, bank, bank_account, fee, required) en es/en

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

src/assets/i18n/en.json

@@ -14,7 +14,7 @@
     "login": "Log in",
     "signup": "Sign up",
     "forgot": "Forgot your password?",
-    "fb_login": "Continue with Facebook",
+    "apple_login": "Continue with Apple",
     "google_login": "Continue with Google",
     "email": "Email",
     "password": "Password",
@@ -142,7 +142,12 @@
     "keywords_hint": "Separate keywords with commas",
     "address": "Address",
     "discover": "How did you hear about us?",
+    "select": "Select",
     "discover_details": "Please specify how you found out about us",
+    "bank": "Bank",
+    "bank_account": "Bank account",
+    "fee": "Minimum fee",
+    "required": "Field required",
     "signup": "Sign up",
     "radio": "Radio",
     "tv": "TV",