Add models, enums, and services for user roles, theme preferences, slug history, and ID generation

app/Services/IdGenerator.php

@@ -0,0 +1,41 @@
+<?php
+
+namespace App\Services;
+
+use Illuminate\Database\Eloquent\Model;
+use Illuminate\Support\Str;
+
+class IdGenerator
+{
+    /**
+     * Generate a random ID starting at 4 digits, expanding to 5 if needed
+     *
+     * @param string $model Model class name
+     * @param string $field Field to check for uniqueness
+     * @return string
+     */
+    public static function generate(string $model, string $field): string
+    {
+        $attempts = 0;
+        $maxAttempts = 10;
+
+        while ($attempts < $maxAttempts) {
+            // Try 4 digits first
+            if ($attempts < 5) {
+                $id = (string) random_int(1000, 9999);
+            } else {
+                // Try 5 digits if all 4-digit numbers are taken
+                $id = (string) random_int(10000, 99999);
+            }
+
+            if (!$model::where($field, $id)->exists()) {
+                return $id;
+            }
+
+            $attempts++;
+        }
+
+        // If we get here, try a completely random string as fallback
+        return Str::random(10);
+    }
+}