/usage command incorrectly shows 'only available for subscription plans' for Pro subscribers

Bug Description

The /usage command displays "only available for subscription plans" even when the user is logged in with a Claude Pro Account subscription.

This is a regression - /usage was working correctly until today (January 7, 2025) and suddenly stopped working with no changes on the user's end.

Steps to Reproduce

1. Log in to Claude Code with a Claude Pro Account
2. Verify authentication with /status - confirms "Login method: Claude Pro Account"
3. Run /usage

Expected Behavior

/usage should display plan usage limits and rate limit status for Pro subscribers, as it did previously.

Actual Behavior

/usage returns: "/usage is only available for subscription plans."

Environment

• Claude Code version: 2.0.76
• Platform: macOS (Darwin 25.2.0)
• Login method: Claude Pro Account (confirmed via /status)

Additional Context

• The /status command correctly identifies the user as logged in with a Pro subscription
• /usage does not recognize this as a valid subscription plan
• This was working correctly until today, suggesting a backend or recent update issue

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