release: ship v1.7.0 with two-way cloud sync and streaming captions

Signing in now keeps history, dictionary, meetings with memos and documents,
memo tags, user commands and templates the same on desktop, phone and web,
with offline changes queued, deletions shared and phone edits arriving live.
The desktop registers in the phone's device list and signs out when
disconnected there; local-mode records move into the first account.

Live captions stream about a second behind speech, finish lines on pauses,
are polished in context by the local model and can use their own speech
model (the speech engine is downloaded again once, minimum 1.7.0).

Fixes suggestion paste on Ctrl+Alt+Enter, click acceptance, typing detection
in growing chat boxes, one-way cloud sync and failing account exports.

Bumps the product version to 1.7.0 (Android/iOS build 1070000).

apps/mobile-rn/metadata/android/en-US/changelogs/1070000.txt

@@ -0,0 +1 @@
+Syncing with the desktop app is fixed. The device list now shows the desktop app and lets you disconnect it. Exporting your data no longer fails for accounts with meetings.

apps/mobile-rn/metadata/android/ko-KR/changelogs/1070000.txt

@@ -0,0 +1 @@
+데스크톱 앱과의 동기화를 고쳤습니다. 연결된 기기 목록에 데스크톱 앱이 함께 표시되고, 여기서 연결을 해제할 수 있습니다. 데이터 내보내기가 회의가 있는 계정에서 실패하던 문제도 수정했습니다.