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.

resources/js/pages/build-artifacts/Show.vue

@@ -52,7 +52,9 @@ defineProps<{
                         <CardTitle>Metadata</CardTitle>
                     </CardHeader>
                     <CardContent>
-                        <pre class="overflow-x-auto rounded-md bg-muted p-3 text-xs">{{ JSON.stringify(artifact.metadata ?? {}, null, 2) }}</pre>
+                        <pre class="overflow-x-auto rounded-md bg-muted p-3 text-xs">{{
+                            JSON.stringify(artifact.metadata ?? {}, null, 2)
+                        }}</pre>
                     </CardContent>
                 </Card>
             </div>