Restructure UX and seed a fully simulated organisation

Rework the dashboard, environment topology view, header navigation, and
status rendering, and standardise selects on a shadcn-vue component.

Replace the thin database seeder with a SimulatedEnvironmentSeeder that
builds a fully wired, mostly-running organisation (ACTIVE server fleet,
managed + GHCR registries, Gitea source provider, ClipBin app with
production/staging environments, services, slices, endpoints, managed
variables, build artifacts, and a completed/in-progress/failed operations
history) so the new UI renders against realistic data.

database/seeders/DatabaseSeeder.php

@@ -4,11 +4,8 @@ namespace Database\Seeders;
 
 use App\Enums\OrganisationRole;
 use App\Enums\ProviderType;
-use App\Enums\RepositoryType;
 use App\Models\Organisation;
-use App\Models\Server;
 use App\Models\User;
-// use Illuminate\Database\Console\Seeds\WithoutModelEvents;
 use Illuminate\Database\Seeder;
 use Illuminate\Support\Facades\Hash;
 
@@ -36,36 +33,11 @@ class DatabaseSeeder extends Seeder
         $provider = $organisation->providers()->create([
             'name' => 'Hetzner',
             'type' => ProviderType::HETZNER,
-            'token' => env('HETZNER_KEY'),
+            'token' => env('HETZNER_KEY') ?: 'local-placeholder-token',
         ]);
 
         if (! app()->isProduction()) {
-            $network = $organisation->networks()->create([
-                'name' => 'keystone',
-                'external_id' => 'net-12345',
-                'provider_id' => $provider->id,
-                'ip_range' => fake()->ipv4().'/24',
-            ]);
-
-            $servers = Server::factory(40)
-                ->forNetwork($network->id)
-                ->forOrganisation($organisation->id)
-                ->forProvider($provider->id)
-                ->create();
-
-            $organisation->servers()->saveMany($servers);
+            app(SimulatedEnvironmentSeeder::class)->seed($organisation, $provider);
         }
-
-        $application = $organisation->applications()->create([
-            'name' => 'ClipBin',
-            'repository_url' => 'git@github.com:hjbdev/clipbin.git',
-            'repository_type' => RepositoryType::GIT,
-        ]);
-
-        $application->environments()->create([
-            'name' => 'Dev',
-            'branch' => 'main',
-            'status' => 'active',
-        ]);
     }
 }