Add missing docs (#443)

#SkipVersionBump

Author: lukasmatta

projects/composition/src/app/api-data/cron-validation.service.json

@@ -0,0 +1,28 @@
+{
+    "components": {},
+    "name": "CronValidationService",
+    "description": "Service for validating 6-field cron expressions with extended features.\n\nThis service handles cron validation logic for extended cron expression formats\nthat support additional features beyond standard Unix cron for more flexible\nscheduling capabilities.\n\nFormat: minutes hours day-of-month month day-of-week year\n\nKey Features:\n- Wildcards: asterisk (any value), question mark (any value for day fields)\n- Ranges: 1-5, MON-FRI, JAN-MAR\n- Steps: asterisk/15, 5/10, 1-5/2\n- Lists: 1,3,5, MON,WED,FRI\n- Special chars: L (last), W (weekday), hash (nth occurrence)",
+    "methods": {
+        "description": "Methods used in service.",
+        "values": [
+            {
+                "name": "isValidCron",
+                "parameters": [
+                    {
+                        "name": "cron",
+                        "type": "string",
+                        "description": "The 6-field cron expression to validate"
+                    },
+                    {
+                        "name": "allowEmpty",
+                        "type": "boolean",
+                        "description": "Whether to allow empty cron expressions",
+                        "defaultValue": "false"
+                    }
+                ],
+                "returnType": "boolean",
+                "description": "Validates a complete 6-field cron expression."
+            }
+        ]
+    }
+}

projects/cps-ui-kit/src/lib/services/cron-validation.service.ts

@@ -16,6 +16,7 @@ import { Injectable } from '@angular/core';
  * - Lists: 1,3,5, MON,WED,FRI
  * - Special chars: L (last), W (weekday), hash (nth occurrence)
  * @see {@link https://docs.aws.amazon.com/scheduler/latest/UserGuide/schedule-types.html#cron-based | AWS EventBridge Scheduler - Cron-based schedules}
+ * @group Services
  */
 @Injectable({
   providedIn: 'root'
@@ -27,6 +28,7 @@ export class CronValidationService {
    * @param cron - The 6-field cron expression to validate
    * @param allowEmpty - Whether to allow empty cron expressions
    * @returns boolean - True if the cron expression is valid
+   * @group Method
    */
   isValidCron(cron: string, allowEmpty = false): boolean {
     if (typeof cron !== 'string') return false;