feat(auth): 统一身份 - 增加可选IAM快捷登录并保留原业务权限

server/config/iam.php

@@ -0,0 +1,14 @@
+<?php
+
+// Optional integration: disabled installations never touch IAM or its transaction store.
+return [
+    'enabled' => env('iam.enabled', false),
+    'issuer' => env('iam.issuer', ''),
+    'client_id' => env('iam.client_id', 'zyt'),
+    'client_secret' => env('iam.client_secret', ''),
+    'redirect_uri' => env('iam.redirect_uri', ''),
+    'api_url' => env('iam.api_url', ''),
+    'application_id' => env('iam.application_id', 'zyt'),
+    'application_token' => env('iam.application_token', ''),
+    'public_url' => env('iam.public_url', ''),
+];