Implemented project-wide localization plumbing and converted the visible UI/app messages to translation-ready strings.

tests/Feature/LocalizationTest.php

@@ -0,0 +1,25 @@
+<?php
+
+namespace Tests\Feature;
+
+use Illuminate\Foundation\Testing\RefreshDatabase;
+use Inertia\Testing\AssertableInertia as Assert;
+use Tests\TestCase;
+
+class LocalizationTest extends TestCase
+{
+    use RefreshDatabase;
+
+    public function test_inertia_responses_share_locale_and_translations(): void
+    {
+        $this->get(route('home'))
+            ->assertOk()
+            ->assertInertia(fn (Assert $page) => $page
+                ->component('welcome')
+                ->where('locale', app()->getLocale())
+                ->where('fallbackLocale', config('app.fallback_locale'))
+                ->where('translations.Live', 'Live')
+                ->where('translations.Password', 'Password')
+            );
+    }
+}