feat(apple): send files to a remembered device

Adds the Send files action to the device detail, routing the picked
selection through sendToContact.

Rather than a second picker path, sharePickedFiles now takes a
ShareDestination, so the macOS security-scoped access handling covers both
routes. A contact destination carries no access policy, matching the core's
rule that an offer share is never public.

apple/VniDrop/Platform/FileSystemService+iOS.swift

@@ -59,15 +59,23 @@ struct IosFileSystemService: FileSystemService {
 		files: [PickedShareFile],
 		transferName: String,
 		senderName: String,
-		accessPolicy: ShareAccessPolicy
+		destination: ShareDestination
 	) async -> Result<Share, Error> {
 		guard !files.isEmpty else {
 			return .failure(InvitationError.shareEmpty)
 		}
 		let sources = files.map { $0.toIosShareSource() }
-		return await repository.shareSources(
-			sources, transferName: transferName, senderName: senderName, accessPolicy: accessPolicy
-		)
+		switch destination {
+		case .invitation(let accessPolicy):
+			return await repository.shareSources(
+				sources, transferName: transferName, senderName: senderName, accessPolicy: accessPolicy
+			)
+		case .contact(let endpointId):
+			return await repository.sendToContact(
+				endpointId: endpointId, sources: sources,
+				transferName: transferName, senderName: senderName
+			)
+		}
 	}
 
 	private func validateSecurityScopedUrl(_ value: String) -> FolderAccessStatus {

apple/VniDrop/Platform/FileSystemService+macOS.swift

@@ -39,7 +39,7 @@ struct MacFileSystemService: FileSystemService {
 		files: [PickedShareFile],
 		transferName: String,
 		senderName: String,
-		accessPolicy: ShareAccessPolicy
+		destination: ShareDestination
 	) async -> Result<Share, Error> {
 		guard !files.isEmpty else {
 			return .failure(InvitationError.shareEmpty)
@@ -63,9 +63,17 @@ struct MacFileSystemService: FileSystemService {
 		let sources = files.map {
 			ShareSource(kind: .path, value: $0.value, displayName: $0.displayName, isDirectory: $0.isDirectory)
 		}
-		return await repository.shareSources(
-			sources, transferName: transferName, senderName: senderName, accessPolicy: accessPolicy
-		)
+		switch destination {
+		case .invitation(let accessPolicy):
+			return await repository.shareSources(
+				sources, transferName: transferName, senderName: senderName, accessPolicy: accessPolicy
+			)
+		case .contact(let endpointId):
+			return await repository.sendToContact(
+				endpointId: endpointId, sources: sources,
+				transferName: transferName, senderName: senderName
+			)
+		}
 	}
 }
 #endif

apple/VniDrop/Platform/PlatformPickers.swift

@@ -70,6 +70,33 @@ struct SendPickers: ViewModifier {
 	}
 }
 
+/// File picker for "send to this device", reusing the share picker's selection
+/// handling so security-scoped bookmarks are captured the same way.
+struct ContactSendPickers: ViewModifier {
+	@ObservedObject var model: ContactsModel
+
+	func body(content: Content) -> some View {
+		content
+			.fileImporter(
+				isPresented: $model.pendingFilePick,
+				allowedContentTypes: [.item],
+				allowsMultipleSelection: true
+			) { result in
+				switch result {
+				case .success(let urls):
+					let files = urls.compactMap { PickerSupport.pickedFile(from: $0, isDirectory: false) }
+					if files.isEmpty {
+						model.onFilePickFailed("The selected document could not be opened")
+					} else {
+						Task { await model.onFilesPicked(files) }
+					}
+				case .failure(let error):
+					if !error.isUserCancellation { model.onFilePickFailed(error.technicalDetail) }
+				}
+			}
+	}
+}
+
 enum PickerSupport {
 	static func receiveFolder(from url: URL) -> ReceiveFolder {
 		#if os(iOS)
@@ -129,4 +156,8 @@ extension View {
 	func sendPickers(model: SendModel) -> some View {
 		modifier(SendPickers(model: model))
 	}
+
+	func contactSendPickers(model: ContactsModel) -> some View {
+		modifier(ContactSendPickers(model: model))
+	}
 }