fix(livewire): add Locked attributes and consolidate container name validation

- Add #[Locked] to server-set properties on Import component (resourceId,
  resourceType, serverId, resourceUuid, resourceDbType, container) to
  prevent client-side modification via Livewire wire protocol
- Add container name validation in runImport() and restoreFromS3()
  using shared ValidationPatterns::isValidContainerName()
- Scope server lookup to current team via ownedByCurrentTeam()
- Consolidate duplicate container name regex from Import,
  ExecuteContainerCommand, and Terminal into shared
  ValidationPatterns::isValidContainerName() static helper
- Add tests for container name validation, locked attributes, and
  team-scoped server lookup

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

app/Livewire/Project/Shared/ExecuteContainerCommand.php

@@ -5,6 +5,7 @@ namespace App\Livewire\Project\Shared;
 use App\Models\Application;
 use App\Models\Server;
 use App\Models\Service;
+use App\Support\ValidationPatterns;
 use Illuminate\Support\Collection;
 use Livewire\Attributes\On;
 use Livewire\Component;
@@ -181,7 +182,7 @@ class ExecuteContainerCommand extends Component
         }
         try {
             // Validate container name format
-            if (! preg_match('/^[a-zA-Z0-9][a-zA-Z0-9_.-]*$/', $this->selected_container)) {
+            if (! ValidationPatterns::isValidContainerName($this->selected_container)) {
                 throw new \InvalidArgumentException('Invalid container name format');
             }