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docs(changelog): record kitchenspeak Echo bridge machine-check (2026-06-12) #76

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Jun 12, 2026
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docs(changelog): record kitchenspeak Echo bridge machine-check (2026-06-12) #76

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19 changes: 19 additions & 0 deletions CHANGELOG.md
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Expand Up @@ -6,6 +6,25 @@ Copyright (c) Jonathan D.A. Jewell <j.d.a.jewell@open.ac.uk>

All notable changes to the nextgen-languages parent repository.

## 2026-06-12

### Changed

- *KitchenSpeak Echo bridge is now MACHINE-CHECKED against the real
`hyperpolymath/echo-types` library.* `kitchenspeak/proofs/agda/EchoBridge.agda`
previously carried a "hand-verified, not machine-checked" caveat; it now
typechecks against the real `Echo` (the `@` sensor witness IS
`Echo (fired sensor thr) true`). The wider echo-types ↔ typesystem
integration is recorded in echo-types'
`docs/bridges/cross-repo-bridge-status.md`.

### Fixed

- `kitchenspeak/proofs/agda/PoachedEgg.agda`: stdlib v2.3 API drift
(`toWitness {Q = …}` → `{a? = …}`) so the KitchenSpeak proof suite
(Dough + PoachedEgg + EchoBridge) type-checks on the echo-types CI
toolchain (Agda 2.6.3 + stdlib v2.3).

## 2026-06-02

### Added
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