feat(v5): add server bootstrap job with realtime cluster broadcasting

- Add V5BootstrapServerJob: SSH into new servers, install coold/WireGuard,
  track bootstrap progress via last_bootstrap_action/status/output fields
- Add V5ClusterUpdated event: broadcasts full cluster+servers payload to
  team private channel on bootstrap state changes
- Add V5RealtimeTestEvent + RealtimeTest page for WebSocket connectivity testing
- Consolidate 3 dropped migrations into base cluster/server migrations:
  WireGuard config, builder CPU quota, status check fields, uuid
- Auto-generate uuid on V5Model create via Schema::hasColumn guard
- Expose currentTeam.id in Inertia shared props
- Add showCluster, realtimeTest, broadcastRealtimeTest controller endpoints
- Add dropdown-menu UI component

routes/v5.php

@@ -5,8 +5,11 @@ use Illuminate\Support\Facades\Route;
 
 Route::middleware('v5.authenticated')->group(function () {
     Route::get('/', DashboardController::class)->name('dashboard');
+    Route::get('/realtime-test', [DashboardController::class, 'realtimeTest'])->name('realtime-test');
+    Route::post('/realtime-test', [DashboardController::class, 'broadcastRealtimeTest'])->name('realtime-test.broadcast');
     Route::post('/selection', [DashboardController::class, 'updateSelection'])->name('selection.update');
     Route::get('/clusters', [DashboardController::class, 'clustersIndex'])->name('clusters.index');
+    Route::get('/clusters/{cluster}', [DashboardController::class, 'showCluster'])->name('clusters.show');
     Route::post('/clusters', [DashboardController::class, 'storeCluster'])->name('clusters.store');
     Route::delete('/clusters/{cluster}', [DashboardController::class, 'destroyCluster'])->name('clusters.destroy');
     Route::post('/clusters/{cluster}/servers', [DashboardController::class, 'storeServer'])->name('clusters.servers.store');