add all controllers logic

app/Services/Auth/RegistrationCaptchaService.php

@@ -4,6 +4,14 @@ namespace App\Services\Auth;
 
 class RegistrationCaptchaService
 {
+    private function cacheKey(): string
+    {
+        $ip = (string) (request()?->ip() ?? 'unknown');
+        $ua = (string) (request()?->header('User-Agent') ?? '');
+        $hash = substr(sha1($ua), 0, 12);
+        return 'captcha:' . $ip . ':' . $hash;
+    }
+
     public function generate(?int $length = null): string
     {
         $length = $length ?? random_int(4, 8);
@@ -14,14 +22,14 @@ class RegistrationCaptchaService
             $captchaText .= $characters[random_int(0, strlen($characters) - 1)];
         }
 
-        session()->put('captcha_answer', $captchaText);
+        cache()->put($this->cacheKey(), $captchaText, now()->addMinutes(10));
 
         return $captchaText;
     }
 
     public function verify(string $input): bool
     {
-        $expected = (string) session()->get('captcha_answer', '');
+        $expected = (string) cache()->get($this->cacheKey(), '');
         if ($expected === '') {
             return false;
         }
@@ -31,6 +39,6 @@ class RegistrationCaptchaService
 
     public function clear(): void
     {
-        session()->forget('captcha_answer');
+        cache()->forget($this->cacheKey());
     }
 }