fix: update OIDC URL validation and add tests (#1646)

- Updated the OIDC issuer URL validation to prevent trailing slashes and
whitespace.
- Introduced a utility class `OidcUrlPatterns` for managing URL patterns
and validation logic.
- Added comprehensive tests for the new URL validation logic and
examples to ensure correctness.
- Bumped version to 4.18.1 in the configuration file.

<!-- This is an auto-generated comment: release notes by coderabbit.ai
-->

## Summary by CodeRabbit

- New Features
- Added strict validation for OIDC issuer URLs in the SSO configuration
form, with clearer guidance to avoid trailing slashes.
- Bug Fixes
- Prevented misconfiguration by rejecting issuer URLs with trailing
slashes (e.g., Google issuer), avoiding double slashes in discovery
URLs.
- Tests
- Introduced comprehensive unit tests covering issuer URL validation,
patterns, and real-world scenarios to ensure reliability.
- Chores
  - Bumped version to 4.18.1.

<!-- end of auto-generated comment: release notes by coderabbit.ai -->

unraid-ui/package.json

@@ -42,9 +42,9 @@
     "deploy:storybook:staging": "pnpm build-storybook && wrangler deploy --env staging"
   },
   "peerDependencies": {
+    "ajv": "8.17.1",
     "tailwindcss": "4.1.12",
-    "vue": "3.5.20",
-    "ajv": "8.17.1"
+    "vue": "3.5.20"
   },
   "dependencies": {
     "@headlessui/vue": "1.7.23",
@@ -55,6 +55,7 @@
     "@jsonforms/vue-vanilla": "3.6.0",
     "@tailwindcss/cli": "4.1.12",
     "@vueuse/core": "13.8.0",
+    "ajv-errors": "^3.0.0",
     "class-variance-authority": "0.7.1",
     "clsx": "2.1.1",
     "dompurify": "3.2.6",

unraid-ui/src/forms/config.ts

@@ -1,5 +1,6 @@
 import { createAjv } from '@jsonforms/core';
 import type Ajv from 'ajv';
+import addErrors from 'ajv-errors';
 
 export interface JsonFormsConfig {
   /**
@@ -20,10 +21,15 @@ export interface JsonFormsConfig {
  * This ensures all JSONForms instances have proper validation and visibility rule support
  */
 export function createJsonFormsAjv(): Ajv {
-  return createAjv({
+  const ajv = createAjv({
     allErrors: true,
     strict: false,
   });
+
+  // Add support for custom error messages
+  addErrors(ajv);
+
+  return ajv;
 }
 
 /**