[FEATURE]: Require double Ctrl+C to exit (like Claude Code) #15932

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Describe the enhancement you want to request

Hi, thanks for the great project!

I noticed that currently pressing Ctrl+C immediately exits opencode. In interactive usage it's quite easy to accidentally hit Ctrl+C and lose the current session.

Would it be possible to add an option to require pressing Ctrl+C twice within a short time window to exit, similar to how Claude Code behaves?

Example behavior:

First Ctrl+C → show a message like: Press Ctrl+C again to exit

Second Ctrl+C (within ~2 seconds) → exit the program

This pattern helps prevent accidental exits during interactive sessions.

Ideally it could be configurable, for example:

double_ctrl_c_to_exit = true

or enabled by default for interactive mode.

Thanks for considering!