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docs: the hot-plug matrix is complete — 124/124

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Daniel Samson
2026-08-09 14:19:39 +01:00
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# The hot-plug matrix: unplug anything, replug anywhere
*Status: COMPLETE, 2026-08-09, same day — H1..H5 all green, full suite 124/124.
The predicted cascade bug was real and found by H2: `tearDownPort` did not recurse
into a hub yanked from a root port, so its subtree stayed live against vanished
hardware and the replugged hub found its port occupied; fixed by mirroring
`tearDownHubDevice`'s children-first recursion (77e7001). Every other cell passed
against the establishment-track machinery unchanged.*
*2026-08-09. The requirement, verbatim: "i want to be able to unplug devices and
plug them back in, in any order and on any hub." The machinery exists end to end —
per-device driver processes, cascading teardown (`tearDownHubDevice` recurses a