Approval modal: since the Share/QR sheet auto-opens after creating a transfer,
it is always up when a receiver request arrives, and macOS silently drops a sheet
presented while another is still dismissing — so the approval sheet never appeared.
Drive the approval sheet from explicit state (not a constant binding) and, on
macOS, defer its presentation one dismiss-beat after closing the Share/QR sheet so
the hand-off is serialized. Still a non-dismissable sheet; iOS timing unchanged.
Sandboxed file sharing: the macOS picker released its security scope immediately,
so the core's later import failed with EPERM under the App Store sandbox (the
non-sandboxed .dmg was unaffected). Capture a security-scoped bookmark at pick
time and re-acquire access across shareFiles() — during which the core imports the
bytes — mirroring the receive-folder scoped-access pattern.
The send flow stacked two .fileImporter modifiers on the same view (one
for files, one for folders). On iOS/macOS before 27, SwiftUI can't have
two presentation modifiers of the same kind on one view — the second
shadows the first, so toggling the files importer presented nothing and
"Choose files" appeared to do nothing. macOS/iOS 27 changed presentation
handling, which is why it worked there.
Collapse the two importers into a single .fileImporter that switches its
allowedContentTypes and allowsMultipleSelection based on whether a file
or folder pick is pending. Behavior is unchanged on 27 and now works on
26 and earlier.
Add a native SwiftUI VniDrop app (Send/Receive/Settings) talking to the
Rust core via generated UniFFI Swift bindings, plus the uniffi-bindgen
helper crate. iOS uses a TabView, macOS a NavigationSplitView sidebar.
