[Bug] Windows async ask mode fails silently — PowerShell subprocess exits immediately

[GengZzz]

Bug: Windows async ask fails due to DETACHED_PROCESS flag

Environment

• OS: Windows 11
• Terminal: WezTerm
• Shell: PowerShell

Description

On Windows, async ask <provider> "message" never completes — tasks stay in submitted/spawned state forever. --foreground mode works fine.

Root Cause

bin/ask uses DETACHED_PROCESS (0x00000008) in creationflags when spawning the PowerShell script. This causes PowerShell to exit immediately without executing the script because it has no console.

Fix

Remove DETACHED_PROCESS from creationflags. CREATE_NO_WINDOW is sufficient to hide the console window.

- creationflags=DETACHED_PROCESS | CREATE_NO_WINDOW | CREATE_NEW_PROCESS_GROUP,
+ creationflags=CREATE_NO_WINDOW | CREATE_NEW_PROCESS_GROUP,

Two locations in bin/ask need updating (~lines 663 and 725).

Verification

Tested with and without DETACHED_PROCESS:

• With: PowerShell exits immediately, script never runs
• Without: Script executes normally, async ask works end-to-end

[bfly123]

I will reconstruct win totally recently. Thank you you can wait for a wail.