Add SealShare file sharing application with encryption, branding, auth, Docker, and Octane support

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

app/Models/ShareFile.php

@@ -0,0 +1,39 @@
+<?php
+
+namespace App\Models;
+
+use Illuminate\Database\Eloquent\Factories\HasFactory;
+use Illuminate\Database\Eloquent\Model;
+use Illuminate\Database\Eloquent\Relations\BelongsTo;
+
+class ShareFile extends Model
+{
+    use HasFactory;
+
+    protected $fillable = [
+        'share_id',
+        'original_name',
+        'relative_path',
+        'stored_path',
+        'file_size',
+        'mime_type',
+    ];
+
+    /**
+     * @return array<string, string>
+     */
+    protected function casts(): array
+    {
+        return [
+            'file_size' => 'integer',
+        ];
+    }
+
+    /**
+     * @return BelongsTo<Share, $this>
+     */
+    public function share(): BelongsTo
+    {
+        return $this->belongsTo(Share::class);
+    }
+}