fix(i18n): restore missing translations and enable Suspense loading

public/lang/en/auth.json

@@ -1 +1,80 @@
-{}
+{
+  "login_failed": "Invalid email or password.",
+  "login_success": "You are now logged in.",
+  "registration_failed": "Registration failed.",
+  "registration_success": "Registration successful – proceed with purchase.",
+  "already_logged_in": "You are already logged in.",
+  "failed_credentials": "Wrong credentials.",
+  "header": {
+    "login": "Login",
+    "register": "Register",
+    "home": "Home",
+    "packages": "Packages",
+    "blog": "Blog",
+    "occasions": {
+      "wedding": "Wedding",
+      "birthday": "Birthday",
+      "corporate": "Corporate Event"
+    },
+    "contact": "Contact"
+  },
+  "login": {
+    "title": "Die Fotospiel App",
+    "description": "Sign in with your Fotospiel account to manage every event in one place.",
+    "brand": "Die Fotospiel App",
+    "logo_alt": "Fotospiel App logo",
+    "identifier": "Email or Username",
+    "identifier_placeholder": "you@example.com or username",
+    "username_or_email": "Username or Email",
+    "email": "Email Address",
+    "email_placeholder": "your@email.com",
+    "password": "Password",
+    "password_placeholder": "Your password",
+    "remember": "Stay logged in",
+    "forgot": "Forgot password?",
+    "submit": "Login",
+    "oauth_divider": "or",
+    "google_cta": "Continue with Google",
+    "google_helper": "Use your Google account to access the event dashboard securely.",
+    "no_account": "Don't have access yet?",
+    "sign_up": "Create an account"
+  },
+  "register": {
+    "title": "Register",
+    "name": "Full Name",
+    "username": "Username",
+    "email": "Email Address",
+    "password": "Password",
+    "password_confirmation": "Confirm password",
+    "first_name": "First Name",
+    "last_name": "Last Name",
+    "address": "Address",
+    "phone": "Phone Number",
+    "privacy_consent": "I agree to the privacy policy and accept the processing of my personal data.",
+    "privacy_policy_link": "Privacy Policy",
+    "submit": "Register",
+    "first_name_placeholder": "First name",
+    "last_name_placeholder": "Last name",
+    "email_placeholder": "you@example.com",
+    "address_placeholder": "Street, ZIP, City",
+    "phone_placeholder": "+1 555 123 4567",
+    "username_placeholder": "e.g. wedding_julia",
+    "password_placeholder": "At least 8 characters",
+    "password_confirmation_placeholder": "Repeat your password",
+    "server_error_title": "We couldn't finish your registration",
+    "server_error_message": "Something went wrong on our side. Please try again in a moment or contact support@fotospiel.de.",
+    "session_expired_title": "Security check expired",
+    "session_expired_message": "Your session expired. Refresh the page and try again."
+  },
+  "verification": {
+    "notice": "Please verify your email address.",
+    "resend": "Resend email",
+    "success_title": "Email verified",
+    "success_message": "Your email is confirmed. You can sign in now.",
+    "checkout_success_message": "Email confirmed. Continue your checkout to finish the order.",
+    "toast_success": "Email verified successfully.",
+    "expired_title": "Verification link expired",
+    "expired_message": "That verification link is no longer valid. Request a new email below.",
+    "toast_error": "Verification link expired. Request a new one."
+  }
+}