AWS Marketplace Billing Detection

What: Added support for detecting AWS Marketplace billing and restricting features accordingly

How it works:

• The OAuth profile API now returns an organization.billing_type field
• This value is stored as organizationBillingType in the user's config
• When billing type is "aws_marketplace", certain features are restricted

Details:

• AWS Marketplace customers are excluded from Opus model access, regardless of subscription tier
• The VD() function at line 438734 implements the gating logic
• Billing type is fetched from /api/oauth/profile and persisted across sessions
• Evidence: Field extraction at pC0() at line 397362, feature gating at VD() at line 438734

Limitations: AWS Marketplace customers cannot select the Opus model even with Pro/Max/Enterprise subscriptions.