[DOCS] Install on Windows via winget command instead of PS1 install script

[ericgl]

Documentation Type

Missing documentation (feature not documented)

Documentation Location

https://github.com/anthropics/claude-code

Section/Topic

Getting Started

Current Documentation

irm https://claude.ai/install.ps1 | iex

What's Wrong or Missing?

Missing winget command.

Suggested Improvement

I suggest that instead of using:
irm https://claude.ai/install.ps1 | iex

it seems simpler to install using winget:
winget install --id Anthropic.ClaudeCode
winget install --id Git.Git -e --source winget

Impact

Low - Minor confusion or inconvenience

Additional Context

No response

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[woutervh]

when installing Claude code via winget, and then run claude doctor
gives

Warning: Running native installation but config install method is 'unknown'

$ claude doctor
 Diagnostics
 └ Currently running: native (2.0.58)
 └ Path: native
 └ Invoked: C:\Users\<username>\.local\bin\claude.exe
 └ Config install method: unknown
 └ Auto-updates: default (true)
 └ Search: OK (bundled)
 Warning: Running native installation but config install method is 'unknown'

[denelon]

Using WinGet also includes a SHA256 validation for the installer so it's less likely an MITM type of attack results in the wrong thing getting installed.

[ant-kurt]

This has been documented at https://code.claude.com/docs/en/setup#winget

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