chore(docs-site): add dev shortcut and fix hero heading clipping (#190)

* chore(docs-site): add dev shortcut and fix hero heading clipping

- Add `pnpm docs` script that frees port 3000 then runs the docs-site
  dev server, so the docs preview is one command away.
- Bump hero heading line-height to 1.2 and add 0.15em bottom padding
  so the gradient text-clip no longer cuts off descenders.
- Sync auto-generated next-env.d.ts to the current Next types path.

* fix(ci): unblock CI on docs-font branch

- Add lsof to knip ignoreBinaries so the new `pnpm docs` script
  (which uses `lsof -ti:3000` to free port 3000) does not trip
  the Unlisted binaries check.
- Make CLI version assertions read @ktx/cli/package.json at runtime
  instead of hardcoding 0.0.0-private. The 0.4.0 release commit on
  main bumped the package version, breaking 18 hardcoded test cases
  in index.test.ts and admin-reindex.test.ts; reading the version
  dynamically keeps the suite green across future version bumps.

* fix ci release version fixtures

scripts/local-embeddings-runtime-smoke.test.mjs

@@ -12,7 +12,6 @@ import {
   publicKtxTarballName,
   validateEmbeddingResponse,
 } from './local-embeddings-runtime-smoke.mjs';
-
 const PUBLIC_TARBALL_NAME = `kaelio-ktx-${PUBLIC_NPM_PACKAGE_VERSION}.tgz`;
 const OTHER_PUBLIC_TARBALL_NAME = 'kaelio-ktx-9.9.9.tgz';