[terminalchai]

What does this PR do?

Adds Windows PowerShell guidance to the CLI reference. curl.exe and a UTF-8 file body avoid the curl alias and native-command JSON quoting differences in Windows PowerShell 5.1 and PowerShell 7.

The local example uses the development server's mock /run endpoint. The deployed example uses the current authenticated /api/agents/:namespace/:name/run endpoint and explains its token, input-schema and model-key requirements. Current main has been merged, preserving its expanded CLI documentation.

Validation: both exact documentation snippets were parsed and executed against a local HTTP capture fixture under Windows PowerShell 5.1 and PowerShell 7.6.5. The checks verified request paths, deployed Bearer authentication, nested JSON input, and non-ASCII UTF-8 bytes without a BOM. No live registry was called.

Checklist

• Documentation examples validated under both PowerShell versions
• pnpm build passes
• pnpm test (not rerun for documentation-only changes)
• pnpm lint (the Windows checkout has existing CRLF formatting failures; checks with formatting disabled pass)

Prepared with AI assistance and independently reviewed.