Make create Back commit like Android so notes appear in the list and the
next New note opens empty. Harden memo-card press feedback, allow
programmatic WKWebView keyboard focus, and pin the format toolbar above
the scrolling editor body so it no longer jumps under the software keyboard.
Replace the abandoned RN iOS path with a SwiftUI app (iOS 17+) that reuses
the shared TipTap editor bundle, GRDB local mirror/outbox, and Android-aligned
shell chrome for list, create, detail, and Me. Package the editor HTML in the
app resources so Markdown renders, present edit from the workspace root with a
UIKit FAB, and keep caret stable while typing.