Persist exited status across application, database, service, and preview stop paths, and reuse the split host/port/path input for S3 endpoints with linked validation feedback.
Reuse the existing SafeWebhookUrl rule on the S3 Storage endpoint field so
the create and edit forms go through the same URL-normalization path as
webhook settings. Adds a matching guard inside S3Storage::testConnection()
so background callers (scheduled backups, database import reuse) also
validate the endpoint before building the S3 client.
Also fixes an IPv6-bracket edge case in SafeWebhookUrl so `http://[::1]`
style hosts are normalized before the filter_var IP check — the rule's
own loopback test was already asserting this behaviour.
- Introduced `ValidationPatterns` class to standardize validation rules and messages for various fields across multiple components.
- Updated components including `General`, `StackForm`, `Create`, and `Show` to utilize the new validation patterns, ensuring consistent validation logic.
- Enhanced error messages for required fields and added regex validation for names and descriptions to improve user feedback.
- Adjusted styling in the `create.blade.php` view for better visual hierarchy.
