release: ship v1.8.0 with knowledge, recording and settings sync

Knowledge documents move between desktop, phone and web as source text and
are indexed on each device; desktop recordings upload to the shared storage
and any recording plays from the history card; language, theme, auto-polish
and the active command follow the phone. Document text survives a missing
embedding model so it can be indexed later.

Bumps the product version to 1.8.0 (Android/iOS build 1080000).

apps/mobile-rn/metadata/android/ko-KR/changelogs/1080000.txt

@@ -0,0 +1 @@
+데스크톱 앱에서 추가한 지식 문서와 녹음을 휴대폰에서도 보고 들을 수 있습니다. 언어·테마·자동 다듬기 설정도 데스크톱과 함께 맞춰집니다.