fix: trustProxies (assets Filament https) + noms exos localisés (name_i18n) + /api/stats

Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>

functional/exercises/routes/api.php

@@ -1,6 +1,7 @@
 <?php
 
 use Functional\Exercises\Http\Controllers\ExercisesController;
+use Functional\Exercises\Http\Controllers\StatsController;
 use Illuminate\Support\Facades\Route;
 
 // Routes here are wrapped in the 'api' middleware group with the 'api'
@@ -12,3 +13,6 @@ use Illuminate\Support\Facades\Route;
 Route::get('/exercises/facets', [ExercisesController::class, 'facets']);
 Route::get('/exercises', [ExercisesController::class, 'index']);
 Route::get('/exercises/{exercise}', [ExercisesController::class, 'show']);
+
+// Stats publiques agrégées (widget Homepage).
+Route::get('/stats', StatsController::class);