Improve the Agent instance naming UI to clearly display character requirements and the 15-character limit.

When configuring a CONNECT to PI Agent instance, entering an invalid name results in the message "Field does not fit the character requirements." However, the UI does not specify what the valid character rules are or which character(s) the user has entered incorrectly. Additionally, while there is a 15-character limit, this constraint is only revealed once the limit is exceeded. To enhance the user experience and reduce confusion, the interface should:

• Clearly display the allowed character set (e.g., letters, numbers, underscores, etc.).

• Provide real-time validation indicating which characters are invalid.

• Proactively inform users of the 15-character limit before they exceed it.

This improvement would help users avoid trial-and-error, improve clarity during setup, and reduce frustration.