feat: implement Spatie Media Library integration

with CRUD operations and media management UI

app/Filament/Resources/Media/Pages/CreateMedia.php

@@ -0,0 +1,61 @@
+<?php
+
+namespace App\Filament\Resources\Media\Pages;
+
+use App\Filament\Resources\Media\MediaResource;
+use Filament\Resources\Pages\CreateRecord;
+use Illuminate\Support\Facades\Storage;
+use Spatie\MediaLibrary\MediaCollections\Models\Media;
+
+class CreateMedia extends CreateRecord
+{
+    protected static string $resource = MediaResource::class;
+
+    protected ?string $uploadedFile = null;
+
+    protected function mutateFormDataBeforeCreate(array $data): array
+    {
+        // Extract the file data before creating the media record
+        $file = $data['file'] ?? null;
+        unset($data['file']);
+
+        // Store file path for later
+        $this->uploadedFile = $file;
+
+        // Set required fields for Media model
+        $data['model_type'] = $data['model_type'] ?? 'temp';
+        $data['model_id'] = $data['model_id'] ?? 0;
+        $data['collection_name'] = $data['collection_name'] ?? 'default';
+        $data['disk'] = $data['disk'] ?? 'public';
+        $data['file_name'] = $file ? basename($file) : '';
+        $data['mime_type'] = $file && Storage::disk('public')->exists($file)
+            ? Storage::disk('public')->mimeType($file)
+            : 'application/octet-stream';
+        $data['size'] = $file && Storage::disk('public')->exists($file)
+            ? Storage::disk('public')->size($file)
+            : 0;
+        $data['manipulations'] = [];
+        $data['custom_properties'] = [];
+        $data['generated_conversions'] = [];
+        $data['responsive_images'] = [];
+
+        return $data;
+    }
+
+    protected function afterCreate(): void
+    {
+        if ($this->uploadedFile && $this->record) {
+            $disk = Storage::disk('public');
+
+            // Create the directory for this media ID (Spatie structure: {id}/{filename})
+            $mediaDirectory = (string) $this->record->id;
+            $disk->makeDirectory($mediaDirectory);
+
+            // Move file from temporary upload location to Spatie's expected location
+            if ($disk->exists($this->uploadedFile)) {
+                $newPath = $mediaDirectory.'/'.$this->record->file_name;
+                $disk->move($this->uploadedFile, $newPath);
+            }
+        }
+    }
+}