docs: add Windows support to install docs and justfile

[gowthamrdyy]

Fixes #8729. Added Windows 11 to supported OS list in install.md and updated justfile for Windows compatibility.

[github-actions]

All contributors have signed the CLA ✍️ ✅
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[chatgpt-codex-connector]

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Reviewed commit: b4966c9a94

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[chatgpt-codex-connector]

Preserve variadic args when invoking cargo helpers

Wrapping {{args}} in quotes collapses every argument into a single argv entry. After this change, running just codex --foo bar executes cargo run … -- "--foo bar", so the binary sees one combined argument instead of the intended --foo and bar. This breaks forwarding of multiple arguments (similarly in the other *args recipes such as exec, file-search, app-server-test-client, fix, and mcp-server-run).

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[Copilot]

Pull request overview

This PR adds Windows 11 support by updating the installation documentation and modifying the justfile for Windows compatibility. The changes address issue #8729 which requested that Windows be listed as a supported OS since the codebase already works on Windows (as evidenced by CI testing on Windows runners).

Key changes:

• Updated system requirements table to list Windows 11 as directly supported (removing the "via WSL2" qualifier)
• Modified justfile to work on Windows by replacing bash-style $@ with just's {{args}} syntax, removing set positional-arguments, and adding PowerShell as the Windows shell

Reviewed changes

Copilot reviewed 2 out of 2 changed files in this pull request and generated 2 comments.

File	Description
docs/install.md	Removed WSL2 requirement qualifier from Windows 11 in the OS compatibility table
justfile	Updated for Windows compatibility: added PowerShell shell configuration, replaced positional argument syntax from $@ to {{args}} in all recipes

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[Copilot]

The clippy recipe is using {{args}} but does not declare *args in its parameter list. This will cause an error when the recipe is invoked. The recipe signature should be changed to clippy *args: to match the other recipes that accept arguments, or the {{args}} should be removed from the command if arguments are not intended to be supported.

Suggested change

	clippy:
	clippy *args:

[Copilot]

Removing the "via WSL2" qualifier makes it appear that native Windows 11 is fully supported, but the installation instructions below (lines 23-24, 57) contain bash-specific commands that won't work on native Windows PowerShell. Either the documentation should be updated to include Windows-specific installation instructions, or the change should specify that while the codebase itself supports Windows, the setup instructions assume a Unix-like environment. Consider adding a note about Windows-specific setup or keeping the WSL2 qualifier until Windows-native installation instructions are added.

Suggested change

	| Operating systems | macOS 12+, Ubuntu 20.04+/Debian 10+, or Windows 11 |
	| Operating systems | macOS 12+, Ubuntu 20.04+/Debian 10+, or Windows 11 (via WSL2 or another Unix-like environment) |

[gowthamrdyy]

I have read the CLA Document and I hereby sign the CLA

[etraut-openai]

Windows (without WSL) is not yet fully supported. We consider it in "experimental mode". We'll move it into "fully supported" mode once our new sandboxing mechanism is ready.

Please see the code review comments about your proposed changes to the justfile.