The consuming shell read on master told the model where a truncated stream's complete text lived: [some output was dropped from memory; full output: <paths>]. The ring-backed read rendered a notice only for the ring's own eviction and ignored the gapBefore mark the pump puts on a chunk whose source lost bytes between two polls, so a fast producer's tail read as continuous output and no path survived. A lossy source read now carries the source's spillPath onto its gap chunk (JobSourceRead, JobAppendOptions, JobChunk), the pump forwards it, the ring retains it, and the model renderer emits master's notice for a producer-side gap or a ring eviction, listing the distinct spill files in offset order. The bash and pwsh sources already returned the subprocess reader's spillPath; the type now admits it.
Yichen Jiang
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