[barelyworkingcode]

Closes #628

Epic #626 (owning parent barelyworkingcode/relay#588). Children: #627 (#639 pin, then the host-adopt PR). Stays a draft until the joint close task on barelyworkingcode/relay#588 (step c).

🤖 Generated with Claude Code

[barelyworkingcode]

Evidence, restated from #639 (pin, trivial) and #641 (eve#627), and the frozen-head verification on #628.

Review: no blocking findings (#641, Sonnet)
Journey: outside-adopt-host (screen; the nightly runs it); frozen head ae73cfe stack e628: SUMMARY pass=48 fail=0 blocked=1 notrun=11
Break-and-restore: put && !r.item.hostId back into showsAdopt: two G6.110 cases failed; restored byte for byte (#641)
Harness weakening: none (one journey added; nothing removed, skipped or loosened)
Main harness vs head: n/a: the added journey is a screen journey the nightly runs; the --stack run on the frozen head is green

[barelyworkingcode]

merge-check: merged. approved, target, verified, contract, evidence, owner
Report: 2. The gates themselves: criterion removed npx playwright test and the --stack run pass on the epic head, on a fresh stack built with relay's epic head. (issue #628)