chore: streamline toolchain, packaging and CI

[Maximvdw]

Brings this module onto the shared OpenHPS toolchain baseline, applied by the openhps-devtools codemod so every repository lands the same shape.

Toolchain: TypeScript 5.9, ESLint 9 with a native flat config, typescript-eslint 8, prettier 3, mocha 11, chai 6, c8, typedoc 0.28, @types/node 24, engines.node >=22. npm replaces yarn, with npm ci in CI instead of the bare npm install/yarn install that silently rewrote lockfiles.

Packaging: types resolves to dist/types, the exports map lists types first in every condition and points import at dist/esm, and the redundant esm5 target is gone — its tsconfig used target es6 while the esm one used es2015, the same TypeScript alias. tslib is now declared, since the tsconfig sets both importHelpers and noEmitHelpers, a combination that always emits an import of it.

scripts/finalize-esm.mjs makes dist/esm genuinely loadable as ES modules: it writes the per-directory type markers — without which both Node and webpack parse the output as CommonJS and fail on the first import — and rewrites TypeScript's directory imports to the explicit file paths Node's ESM resolver requires.

Dependency policy: @openhps/* peer ranges gain an upper bound (>=1.0.16 <2") and every declared peer has a matching devDependency, so CI tests what consumers receive. scripts/check-peers.mjs` enforces both as part of lint.

CI: replaces a hand-forked main.yml with a thin caller onto OpenHPS/workflows. The fleet had 24 distinct variants of that file. Every job now installs its own dependency tree rather than depending on an actions/cache hit for node_modules, lint no longer waits on build, and the matrix covers Node 22 and 24.

Coverage moves from nyc to c8: nyc 18's spawn-wrap breaks down on Node 22, running the tests while reporting 0 passing and 0% coverage.

The ESM smoke test still resolves @openhps/core from the registry, where 1.0.16 ships the old dist/esm5 with directory imports. It passes against a locally built core and will pass here once core is released.

🤖 Generated with Claude Code

https://claude.ai/code/session_01FtN6Tx33QW5a6AtCH1zYQh

[Maximvdw]

CI cannot pass until the native OpenCV build is resolved — the same blocker as OpenHPS/openhps-opencv#1, inherited transitively.

@openhps/opencv runs build:opencv from its postinstall, compiling OpenCV 4.6.0 from source, and that fails on a modern toolchain. npm ci therefore fails here before any job runs. This PR does not change that; #2 tracks the deprecate-vs-fix decision for this package.

Verified locally against an install with --ignore-scripts:

• npm run build succeeds
• npm run lint reports 0 errors

Linting this repository for the first time also surfaced a real defect, fixed here: VSLAMService wrote this.globalSystemUID === undefined; where it meant =, so destroying the global VSLAM system left the UID pointing at a system that had just been deleted.