[Feature] Auto-Check for updates

[digitallysavvy]

What problem are you trying to solve?

Today I want to know if there is a new update available, but i can't check with the CLI, I can only upgrade. So I have to go to the github and see if there is an update

Proposed behavior

After a user initiated command completes its executes, there should be a check if there is a new version and let the user know. This should only happen on the first invocation for that terminal session to avoid polluting the terminal output.

Alternatives considered

No response

Primary audience

AI coding agents (Cursor, Claude, Copilot, etc.), Human developers (interactive CLI)

Breaking-change risk

No — purely additive (new command, new flag, new field)

Confirmations

• I have searched existing issues and this is not a duplicate.
• I have read AGENTS.md and CONTRIBUTING.md and this proposal aligns with the CLI's design contracts (JSON envelope, exit codes, error code catalog).