[Bug]: On a Claude Max 20x subscription with a valid OAuth access token from ~/.claude/.credentials.json, every Hermes request to native Anthropic (provider: anthropic, https://api.anthropic.com/v1/messages) is rejected with HTTP 400

#15080 Fixed P1

[Bug]: On a Claude Max 20x subscription with a valid OAuth access token from ~/.claude/.credentials.json, every Hermes request to native Anthropic (provider: anthropic, https://api.anthropic.com/v1/messages) is rejected with HTTP 400

With a valid Claude Max 20x OAuth access token, every Hermes request to the native Anthropic provider fails with HTTP 400, reporting that extra usage has been exhausted. Issue is closed as fixed.