feat(project): add icons and improve persistent volume management

Add project icon storage and serving with local/S3 support, prevent deletion of compose-managed volumes, and optimize volume backups. Refine project and backup UI components with consistent styling and coverage.

app/Livewire/Project/Shared/Storages/Show.php

@@ -105,6 +105,7 @@ class Show extends Component
         // PR deployment volume suffixes only apply to git-based applications.
         $this->supportsPreviewSuffix = $this->resource instanceof Application
             && $this->resource->git_based()
+            && filled($this->resource->git_repository)
             && ! $this->isService;
         // Parent All batches badge/url; isolated embeds still hydrate themselves.
         if (! $this->backupMetaHydrated) {