Release v2.2.13

[kswenson]

Version bump only — 2.2.12 → 2.2.13. Follows the #429 → #431 pattern, where the backport and its release were separate PRs.

Bumped with npm version --no-git-tag-version patch, so package.json and package-lock.json stay in sync. No other files touched.

What this release ships

Both from #436, the backport of #434:

• CFM-19 — Slovenian (sl) added to the bundled languages. Complete in CFM's POEditor project: 163/163 keys, none empty.
• CFM-20 — translate() now falls back to en-US before falling back to the raw key. An unrecognized language, or a key missing from an otherwise-present locale, renders English instead of ~MENUBAR.UNTITLED_DOCUMENT. A key that exists in no locale still renders as itself.

Why it matters

This is what unblocks CODAP-1484. CODAP v3's main pins ~2.2.12, so it consumes the 2.2.x line through the npm latest tag — the corresponding master landing publishes only to next, which CODAP main does not consume. Once 2.2.13 is published, CODAP picks it up on a plain npm update with no range change.

Verification

Check	Result
npm test	26 suites, 218 tests passing
npm run lint	clean
npm run build	compiled successfully

Confirmed on this branch: sl is in LANGUAGES, {key: 'sl'} is registered in translate.ts:52, and lang/sl.json is present.

After merge

Publish to the latest dist-tag:

npm run publish:npm:latest:preview   # dry run
npm run publish:npm:latest

Note that latest is the released line here — master is 2.3.x under next and stays there.

🤖 Generated with Claude Code