feat(admin): rebuild release upload form with Livewire and CDN validation

Replace the server-rendered release upload form with a Livewire component,
introducing an interactive admin release form that supports dynamic episode
management, real‑time CDN path validation, and direct download file checks.

Key changes:
- New `AdminReleaseForm` Livewire component with dynamic episode fields,
  Tagify integration, and upload handling via Livewire's file uploads.
- Added `CdnPathValidator` service to verify download and stream paths across
  all configured mirrors, caching results and capturing file sizes.
- Extended `EpisodeService` and `GalleryService` to support array‑based data
  and temporary uploaded files from Livewire.
- Persist validated download sizes and store the validation timestamp on the
  `downloads` table via a new migration; also add a unique constraint on
  `hentais.slug` to prevent duplicates.
- Remove the old POST `/admin/release/upload` route and controller logic,
  along with the legacy `upload.js` script.
- Add comprehensive feature and unit tests covering the new component and the
  CDN validation service.

app/Services/EpisodeService.php

@@ -4,14 +4,16 @@ namespace App\Services;
 
 use App\Models\Episode;
 use App\Models\Hentai;
-use App\Models\Studios;
 use App\Models\ModLog;
+use App\Models\Studios;
 use Illuminate\Http\Request;
+use Illuminate\Http\UploadedFile;
 use Illuminate\Support\Carbon;
 use Illuminate\Support\Facades\Storage;
 use Illuminate\Support\Str;
 use Intervention\Image\Encoders\WebpEncoder;
 use Intervention\Image\Laravel\Facades\Image;
+use Livewire\Features\SupportFileUploads\TemporaryUploadedFile;
 
 class EpisodeService
 {
@@ -171,19 +173,60 @@ class EpisodeService
         );
     }
 
+    /**
+     * Create an episode from an array of data (used by the Livewire release form).
+     *
+     * @param  array{title: string, title_jpn: string, baseurl: string, description: string, releasedate: string, tags: string[], interpolated_uhd?: bool}  $data
+     */
+    public function createEpisodeFromArray(
+        array $data,
+        Hentai $hentai,
+        int $episodeNumber,
+        ?Studios $studio = null
+    ): Episode {
+        $episode = new Episode;
+        $episode->title = $data['title'];
+        $episode->title_search = preg_replace('/[^A-Za-z0-9 ]/', '', $episode->title);
+        $episode->title_jpn = $data['title_jpn'];
+        $episode->slug = "{$hentai->slug}-{$episodeNumber}";
+        $episode->hentai_id = $hentai->id;
+        $episode->studios_id = $studio->id;
+        $episode->episode = $episodeNumber;
+        $episode->description = $data['description'];
+        $episode->url = rtrim($data['baseurl'], '/').'/E'.str_pad($episodeNumber, 2, '0', STR_PAD_LEFT);
+        $episode->view_count = 0;
+        $episode->interpolated = true;
+        $episode->interpolated_uhd = $data['interpolated_uhd'] ?? false;
+        $episode->is_dvd_aspect = false;
+        $episode->release_date = Carbon::parse($data['releasedate'])->format('Y-m-d');
+        $episode->cover_url = "/images/hentai/{$hentai->slug}/cover-ep-{$episodeNumber}.webp";
+        $episode->save();
+
+        foreach ($data['tags'] as $tag) {
+            $episode->tag($tag);
+        }
+
+        return $episode;
+    }
+
     public function createOrUpdateCover(Request $request, Episode $episode, string $slug, int $episodeNumber): void
     {
         if (! $request->hasFile("episodecover{$episodeNumber}")) {
             return;
         }
 
+        $this->saveCoverFromFile($episode, $slug, $episodeNumber, $request->file("episodecover{$episodeNumber}"));
+    }
+
+    public function saveCoverFromFile(Episode $episode, string $slug, int $episodeNumber, UploadedFile|TemporaryUploadedFile $file): void
+    {
         // Create Folder for Image Upload
         if (! Storage::disk('public')->exists("/images/hentai/{$slug}")) {
             Storage::disk('public')->makeDirectory("/images/hentai/{$slug}");
         }
 
         // Encode and save cover image
-        Image::read($request->file("episodecover{$episodeNumber}")->getRealPath())
+        Image::read($file->getRealPath())
             ->cover(268, 394)
             ->encode(new WebpEncoder)
             ->save(Storage::disk('public')->path($episode->cover_url));