Feature Request: Add human-readable cron expression preview & validator in Admin UI

I have searched the existing feature requests, both open and closed, to make sure this is not a duplicate request. • Yes The feature Description Currently, entering cron expressions in the admin settings requires manual verification, which can be error-prone and confusing for non-technical users. It would be a significant UX improvement to add an inline cron parser/preview component next to all cron input fields across the admin panel. Proposed Solution • Human-readable explanation: Display the translated plain-English schedule directly beneath or beside the input (e.g., "At 23:10:00 every day"). • Next run preview: Show the next upcoming execution time(s) based on the input expression to help users verify their configuration. • Validation feedback: Instantly warn users if the syntax is invalid or incompatible (e.g., 5-field standard vs. 6-field with seconds). References / Suggested Implementation • JavaScript cron parser libra…