[MarcStdt]

Summary

• Add typed WIT and TypeScript bindings for ensureFileService, addAndRunCommand, and stopCommand.
• Keep the three platform examples synchronized and add a release changeset.
• Cover defaults, optional IDs, environment tuples, watch/stop forwarding, and async failures through the real async bridge.

Verification

• npm test: 25 tests pass.
• npm run build -- --force: all six packages build successfully.
• git diff --check passes.

Cross-repository dependency

The Scrolls config editor uses ensureFileService. Publish the corresponding package through the normal release workflow, then refresh the Scrolls public dependency lockfile before merging/releasing that consumer. No package release or merge has been performed.

Clean-checkout CI follow-up

The first CI run exposed a test-only workspace-resolution issue: Vitest resolves the mocked component package before applying the mock, but CI runs tests before generating dist. A source alias fixes this without changing production code. Reproduced red in a fresh durable checkout with npm ci; all 25 tests then passed with no component dist output. The fix is pushed in 6ca0cc2; fresh remote matrix results are separate.