Call patch invoke on control + c

[hiroTamada]

TL;DR

Handles Control+C during an invoke command to gracefully terminate the remote session by updating its status to failed.

Why we made these changes

Previously, interrupting an invoke command with Control+C would only terminate the local CLI process, leaving the remote session running. This could lead to orphaned resources and unexpected behavior. This change ensures that when a user cancels an operation, the remote session is properly cleaned up.

What changed?

• cmd/invoke.go:
  • Implemented a signal handler to catch SIGINT (Control+C).
  • On cancellation, the CLI now sends a patch request to mark the remote invocation as 'failed' with a user-cancelled message.
  • Reordered the invocation creation process to ensure the invocationID is available immediately for the cancellation handler.

^{Description generated by Mesa. Update settings}

[mesa-dot-dev]

Performed full review of 000a938...1f86286

Analysis

1. Moving from side-effect based cleanup to explicit state management could introduce transition issues if not all code paths are updated to recognize the new "failed" state marker.
2. The PR may not address potential race conditions between the cancellation signal handling and the normal operation flow.
3. Changing the cancellation semantics could affect downstream components that may have been relying on the previous browser deletion behavior.

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