v0.9.2

Hotfix: the stylesheet import works again.

Fixed

• Package ./css export — import '@tinkermonkey/heimdall-ui/css' failed to resolve in 0.9.0
  and 0.9.1 (#303). The build-tool upgrade in 0.9.0 renamed the emitted
  stylesheet from dist/style.css to dist/heimdall-ui.css, and the exports map still pointed
  at the old name. The stylesheet is back at dist/style.css. dist/heimdall-ui.css remains as
  a deprecated one-line forwarder, so apps that aliased that file directly as a workaround keep
  building; switch back to the documented import.

Added

• npm run check:package (scripts/check-package-exports.mjs) — fails when a path in
  package.json's exports, main or types is missing from the packed tarball. The release
  workflow runs it after building, before the visual tests, so a release can't publish an export
  consumers can't resolve.