CodeBuddy is a Claude Code fork on the same stream-json protocol, and its
adapter carried the same usage-accounting defect #8382 fixed for Claude: one
response can emit several assistant events sharing a message ID and usage, and
the adapter summed every one of them. A run that ends without usable final
usage therefore reported inflated input and cache tokens.
Count each identified main-loop response once within an execution. Keep
forwarding every text and tool block, and keep the existing precedence of the
result's modelUsage over result-level usage over the fallback.
The fallback also stops summing the assistant output_tokens placeholder and
excludes nested-agent events, matching claude.go and the documented crash
recovery procedure. It recovers main-loop input/cache usage, not a full bill.
Co-authored-by: J <[email protected]>
Co-authored-by: multica-agent <[email protected]>
