[FEATURE] Bring pets to API Usage Billing too

Preflight Checklist

• [x] I have searched existing requests and this feature hasn't been requested yet
• [x] This is a single feature request (not multiple features)

Problem Statement

/buddy doesn't work on non-anthropic subscriptions

Proposed Solution

I use claude code w bedrock api billing & would love to use buddy/pet on it too :)

Alternative Solutions

_No response_

Priority

Critical - Blocking my work

Feature Category

CLI commands and flags

Use Case Example

_No response_

Additional Context

_No response_