The locked dependency tree now carries @babel/* 8.x, which requires
node ^22.18.0 || >=24.11.0. Our engines.node arm said ^24.0.0 and the
installer gates (node_satisfies_build / Test-NodeVersionOk) accepted any
Node 24 — so a system Node 24.0–24.10 cleared every gate we own and then
failed 'npm install' with EBADENGINE under engine-strict=true.
- Raise the 24 arm to ^24.11.0 in root + desktop package.json and the
package-lock.json mirrors
- Tighten node_satisfies_build (install.sh) and Test-NodeVersionOk
(install.ps1) to 24.11+; update user-facing wording
- Add invariant tests: every engines.node arm floor must satisfy every
locked dependency's engines.node, and the installer gates must encode
the same floors as the manifest — so the next babel-style floor bump
turns into a CI red instead of a user install outage
- docs: correct stale 'Node.js v22' provisioning claim
15eb5caf7a