fix(route): fix implicit route model binding for Project

- Move Route::model to register() in AppServiceProvider so it persists in route cache
- Re-register in boot() for runtime
- Fix navigation spacing for language/notification/user menu

All 101 tests pass

app/Providers/AppServiceProvider.php

@@ -2,9 +2,11 @@
 
 namespace App\Providers;
 
+use App\Models\Project;
 use App\Models\Task;
 use App\Policies\TaskPolicy;
 use Illuminate\Support\Facades\Gate;
+use Illuminate\Support\Facades\Route;
 use Illuminate\Support\ServiceProvider;
 
 class AppServiceProvider extends ServiceProvider
@@ -14,7 +16,8 @@ class AppServiceProvider extends ServiceProvider
      */
     public function register(): void
     {
-        //
+        // Register route model bindings early (before routes are loaded)
+        Route::model('project', Project::class);
     }
 
     /**
@@ -22,6 +25,9 @@ class AppServiceProvider extends ServiceProvider
      */
     public function boot(): void
     {
+        // Re-register model bindings so they persist in route cache
+        Route::model('project', Project::class);
+
         // Register policies
         Gate::policy(Task::class, TaskPolicy::class);