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/Setting.php

@@ -0,0 +1,28 @@
+<?php
+
+namespace App\Models;
+
+use Illuminate\Database\Eloquent\Model;
+
+class Setting extends Model
+{
+    protected $fillable = [
+        'key',
+        'value',
+    ];
+
+    public static function get(string $key, mixed $default = null): mixed
+    {
+        $setting = static::query()->where('key', $key)->first();
+
+        return $setting ? $setting->value : $default;
+    }
+
+    public static function set(string $key, mixed $value): void
+    {
+        static::query()->updateOrCreate(
+            ['key' => $key],
+            ['value' => $value],
+        );
+    }
+}