Keep each commission callback's exact `Fill` paired with its
report, so overlapping executions on one contract cannot borrow
each other's fees. Cache positions by account and `conId`, queue
commissioned fills by execution ID until a position arrives, and
accept zero commissions. Reject mismatched execution/report IDs.
Keep `Execution.execId` authoritative when flattening ledger
entries; an empty commission ID must not erase a valid fill. Add
regressions for empty commission IDs, reversed fee arrival, and
positions arriving before or after overlapping executions.
The human live-tested fills and reports the accounting fix works.
Exact-boundary automated checks remain pending; the earlier nine
passes covered the mixed working tree. Included Prompt-IO logs
retain whole-session context, including separate roaming work.
Prompt-IO: ai/prompt-io/opencode/20260916T194052Z_749ca1f0_prompt_io.md
(this patch was generated in some part by `opencode` using
`gpt-6-astra` (`openai`))
Gud Boi