Stage interface redesign: pipe type negotiation, eliminate ioCopier#51

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znull wants to merge 11 commits intogit-systems/pooled-copiesfrom

znull/stage-v2-clean

Commits on Apr 9, 2026

Shush the linter

mhagger
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znull
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pipeline_test.go: remove unnecessary tmpdirs and simplify test setup

mhagger
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znull
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Add some benchmarks of moving a bunch of data through a pipeline

mhagger
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znull
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Simplify the `NopCloser`s

mhagger
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znull
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Stage: change the interface to make stdin/stdout handling more flexible

mhagger
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znull
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Add some tests that `Pipeline.Start()` picks the right stdin/stdout

mhagger
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znull
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Port MemoryLimitWithObserver to new Stage interface

znull
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Copilot
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Restore panic handler for Function stages

znull
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Guard against empty pipeline in Pipeline.Start()

znull
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Copilot
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Fix memoryWatchStage.Wait() to always call stopWatching()

znull
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Fix lint errors

znull
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Copilot
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