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docs(handoff): cross-host-routing β€” 561/562/574 and #1601 shipped and deployed - #1674

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Sep 14, 2026
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docs/handoff-cross-host-routing

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@ZacxDev ZacxDev commented Sep 14, 2026

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New handoff doc for the cross-host-routing effort. Docs only β€” one file.

Covers the four PRs this effort landed, all merged and deployed to both hosts at dbefe6fa:

what PR squash
bw:// wrong-host refusal β†’ runnable handoff, exit 4 #1598 08a9cdec
scripts/peer-host β€” which machine a peer session is on #1599 af943906
host_label DERIVES identity, never defaults to workbench #1630 06287019
foreign bw:// ref executes on the naming host over SSH #1662 dbefe6fa

Carries the durable lessons rather than a status recap β€” notably that local out does not clear
an inherited export attribute in bash, which put a 330 KB payload in the environment and made
every subsequent execve return E2BIG; and that the fix for #1601 would have shipped inert
because the deployed collector is a flattened store symlink with no scripts/lib beside it.

One open investigation is recorded with its evidence: test_the_release_handler_EXITS_rather_than_resuming[INT]
still flakes under load after #1585, and "pre-existing load flake" remains an inference nobody
has measured at base under equal load. The doc names the exact probe that would settle it.

πŸ€– Generated with Claude Code

… β€” 561 (bw:// handoff, #1598),

Claude-Session-Id: 4a330c83-1cf9-46a6-a0d7-573c6b14c964
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ZacxDev merged commit d2d4561 into main Sep 14, 2026
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ZacxDev deleted the docs/handoff-cross-host-routing branch September 14, 2026 05:23
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