[Bug]: MiniMax provider fails to fetch usage with web session (billing returns 500)

[CarlosLongarela]

Existing issues

• I searched existing issues and did not find a duplicate.

What happened?

Description

MiniMax provider does not show usage information when using a Coding Plan web session.

I am using CodexBar 0.46.0 on Windows.

Environment

• CodexBar version: 0.46.0
• OS: Windows 11
• Provider: MiniMax Global (platform.minimax.io)
• Authentication method: Browser cookies / Coding Plan session

Steps to reproduce

1. Open MiniMax in browser:
   https://platform.minimax.io/console/usage

2. Confirm that the account usage page works correctly in the browser.

3. In CodexBar:

   • Select MiniMax provider
   • Set Region: Global (platform.minimax.io)
   • Set Cookie source: Manual
   • Import browser cookies

4. Click "Update".

Expected behavior

CodexBar should display the MiniMax Coding Plan usage/quota.

Actual behavior

CodexBar returns:

MiniMax billing returned status 500 Internal Server Error

Additional information

• Browser session works correctly.
• MiniMax usage page loads correctly.
• Cookies are imported successfully.
• Automatic cookie mode does not use the browser session and instead falls back to API authentication:

Provider not installed: MiniMax API not configured. Set MINIMAX_API_KEY and MINIMAX_GROUP_ID environment variables

• Switching region to China results in:

404 Not Found

which seems expected because the account is Global.

Browser network information

The MiniMax usage page loads successfully and makes requests such as:

GET https://platform.minimax.io/console/usage
GET https://platform.minimax.io/v1/api/openplatform/charge/combo/cycle_audio_resource_package
?biz_line=2
&cycle_type=1
&resource_package_type=7

Could the MiniMax billing/usage endpoint used by CodexBar need updating?

Thanks!

Affected area

• Tray panel
• Settings UI
• Config file / settings persistence
• CLI
• Provider-specific behavior
• Installer / release packaging
• Startup / background behavior
• Other

Steps to reproduce

1. Open MiniMax in browser:
   https://platform.minimax.io/console/usage

2. Confirm that the account usage page works correctly in the browser.

3. In CodexBar:

   • Select MiniMax provider
   • Set Region: Global (platform.minimax.io)
   • Set Cookie source: Manual
   • Import browser cookies

4. Click "Update".

Expected behavior

CodexBar should display the MiniMax Coding Plan usage/quota.

Actual behavior

CodexBar returns:

MiniMax billing returned status 500 Internal Server Error

Logs, screenshots, or recordings

App version

v0.46.0

Windows version

Windows 11

Additional context

[Finesssee]

Thanks for the issue, I will fix this ASAP