New PowerShell tool confuses agents

[ShibuyaCyana]

Description

After PR #16069, on Windows, my agent is still proactively using tail to filter the compile result, even with newly created sessions.

It seems that the agent is at least somewhat aware of it's using PowerShell, not Bash, but still frequently forgets about it.

My hypotheses are:

1. The tool is still called bash, the prompt is also saying "Executes a given bash command..." (in bash.txt);
2. It sees command lines starting with $;
3. It sees previous tail usage when continuing from a previous session.

Adding an environment variable mentioned here works, but it's undocumented.
Please optimize the prompts for PowerShell, or just revert to use git bash by default.

Plugins

Superpowers

OpenCode version

Desktop: 1.3.13

Steps to reproduce

As above.

Screenshot and/or share link

As above.

Operating System

Win11 24H2

Terminal

No response

[github-actions]

This issue might be a duplicate of existing issues. Please check:

• OpenCode uses Windows PowerShell 5.1 instead of the PowerShell 7 it was launched from #17372: OpenCode uses Windows PowerShell 5.1 instead of PowerShell 7 — related Windows PowerShell shell selection issue
• PowerShell profile not loaded and inconsistent shell versions on Windows #17393: PowerShell profile not loaded and inconsistent shell versions on Windows — related Windows PowerShell/bash tool inconsistency

If your issue is distinct from these (specifically about the bash tool description/prompt misleading the agent into using bash commands like tail on PowerShell), feel free to clarify and a maintainer will confirm.

[ShibuyaCyana]

If your issue is distinct from these (specifically about the bash tool description/prompt misleading the agent into using bash commands like tail on PowerShell), feel free to clarify and a maintainer will confirm.

I think this issue is distinct enough. It's about the prompt, not the shell itself.

[Hona]

Yeah - I am refactoring this to make agents better here

[soltrac]

I'm having this problem, always try a tail and after that, it won't try again. If opencode knows it is on windows it should no try to tail