saving the API key correctly for windows PowerShell

[mashraf-222]

Fix API key detection and saving for PowerShell on Windows

Problem

On Windows PowerShell, codeflash init saved the API key to codeflash_env.bat using CMD syntax (set CODEFLASH_API_KEY=...). PowerShell doesn't execute .bat files automatically, so the key wasn't detected on subsequent runs. Users had to manually set $env:CODEFLASH_API_KEY each session.

Solution

• Detect PowerShell vs CMD and handle each appropriately
• Save to codeflash_env.ps1 with PowerShell syntax ($env:CODEFLASH_API_KEY = "...") when in PowerShell
• Keep saving to codeflash_env.bat with CMD syntax when in CMD
• Read from both .ps1 and .bat for compatibility
• Show the correct reload command (. codeflash_env.ps1 for PowerShell, call codeflash_env.bat for CMD)

Changes

• Added is_powershell() detection using PSModulePath, COMSPEC, and TERM_PROGRAM
• Updated save_api_key_to_rc() to use the correct file format based on shell type
• Updated read_api_key_from_shell_config() to check both PowerShell and CMD files
• Updated reload command in cmd_init.py to use PowerShell syntax when appropriate
• Added debug logging for troubleshooting

The API key is now saved and detected correctly in PowerShell sessions.

[CLAassistant]

All committers have signed the CLA.

[KRRT7]

have you tested this yourself locally on a windows machine?

[mashraf-222]

have you tested this yourself locally on a windows machine?

yes I did

CLI.API.key.demo.mp4

[codeflash-ai]

⚡️ Codeflash found optimizations for this PR

📄 474% (4.74x) speedup for save_api_key_to_rc in codeflash/code_utils/shell_utils.py

⏱️ Runtime : 9.20 milliseconds → 1.60 milliseconds (best of 1 runs)

A new Optimization Review has been created.

🔗 Review here