Safari floor: a future JSPI + multi-memory release - #127
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…t of scope rather than half-supported The second headline open question closes as a direction: Safari does not gate launch. The execution model stands on JSPI (already a hard runtime requirement — the worker host's loud no-jspi refusal) and wasm multi-memory, so the Safari floor is the future release that ships both — hopefully early 2027. Launch targets the engines that ship the pair today, with availability tracked by refusal rather than silent degradation; the parked Safari worst cases (webrtc 'block' verification, PRF availability, the 7-day eviction rule) demote to the re-evaluation checklist for the day that Safari exists.
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Records the answer to the "Does Safari have to work at launch?" headline question in NOTES.md, from design discussion 2026-08-26. Direction, not final ruling, per the record's conventions.
New Browser floor note in "The substrate":
no-jspirefusal) and wasm multi-memory (runtime-linked composition).webrtc 'block'verification, PRF availability, 7-day eviction) demote to the re-evaluation checklist for when that Safari ships.The parked "Browser support floor" bullet and the open-questions entry now point at the note. Docs-only;
just checkpasses.Automerge armed per repo convention.