The salvaged gate only requested an explicit session.resume when the target
stored session was ALREADY selected — but the field failure (#89206) is the
cold open, where the persisted route points at the bot's session while
selection/runtime/transcript are all unsettled. The precondition skipped the
resume exactly when it was needed, and the hydration wait timed out into a
blank pane.
- sdk/index.ts: judge the main surface AFTER openSession() navigates, and
request a sequenced resume whenever the surface is not healthy (selected +
runtime bound + expected transcript present). Redundant requests are
consumed as no-ops by the route-resume effect.
- hermes-bots plugin: widen the fix to the sibling open path — the profile
session browser (openProfileSession) now opens with the same
awaitHydration/expectHistory contract as canonical Bot Chats, so a stale
main surface gets the same explicit resume instead of a silent blank pane.
- Regression test for the cold-open shape, proven failing against the
pre-fix gate (sabotage run) and passing with it.
Teknium
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