next 16.4.6 / react 19.3.1 and other minors. Add missing StationConfig.id
to config test fixtures (newer next build type-checks tests/).
Tailwind v4 and TS 7 intentionally held.
- mise.toml: pnpm = latest
- pnpm 12 approves build scripts via allowBuilds in pnpm-workspace.yaml
- drop packageManager pin (mise is the version source; pnpm would
self-downgrade to it) and the dead yarn pin in the root package.json