'!' command hangs when running interactive TUI programs (vim, yazi, htop) #29972

Problem

When using the ! command to run interactive TUI programs (e.g., vim, yazi, htop, nano), the session hangs indefinitely without any output or error message. The user must manually terminate the process.

This happens because ! executes commands in a non-interactive bash subprocess without a TTY, which TUI programs require to render their interface.

Steps to Reproduce

1. Type !vim or !yazi in opencode
2. The session freezes with no output
3. User must manually abort (Ctrl+C / close terminal)

Expected Behavior

opencode should detect TUI/interactive programs and either:

1. Show a warning message (e.g., "Interactive programs are not supported in ! mode. Please run this directly in your terminal.")
2. Or forward the TTY to the subprocess so interactive programs can work.

Suggestion

Maintain a list of known TUI programs (vim, nvim, yazi, nano, htop, less, more, top, btop, etc.) and show a helpful message instead of silently hanging.