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/service-slices/Show.vue

@@ -46,10 +46,15 @@ defineProps<{
                 <Card>
                     <CardHeader>
                         <CardTitle>Configuration</CardTitle>
-                        <CardDescription>Credentials are stored encrypted and not revealed here.</CardDescription>
+                        <CardDescription
+                            >Credentials are stored encrypted and not revealed
+                            here.</CardDescription
+                        >
                     </CardHeader>
                     <CardContent>
-                        <pre class="overflow-x-auto rounded-md bg-muted p-3 text-xs">{{ JSON.stringify(slice.config ?? {}, null, 2) }}</pre>
+                        <pre class="overflow-x-auto rounded-md bg-muted p-3 text-xs">{{
+                            JSON.stringify(slice.config ?? {}, null, 2)
+                        }}</pre>
                     </CardContent>
                 </Card>
 
@@ -71,7 +76,7 @@ defineProps<{
                             "
                             class="rounded-md border p-3 text-sm hover:bg-muted/50"
                         >
-                            <div class="font-medium">{{ attachment.role.replace('_', ' ') }}</div>
+                            <div class="font-medium">{{ attachment.role.replace("_", " ") }}</div>
                             <div class="text-muted-foreground">
                                 {{ attachment.environment.name }} ·
                                 {{ attachment.env_prefix ?? "default prefix" }}