feat(apple): transfer controls, progress fixes, and project config

- Sender progress: aggregate only in-flight receivers so the bar clears on
  completion and is order-independent ("Sending to N")
- Add Stop sharing and per-receiver Refuse (pending requests) on the sender
- Fix macOS: raise approval modal above the Share sheet; drive foreground
  state off NSApplication so background notifications fire
- Persist app identity (display name, category) and signing team via
  Info.plist / project.yml / gitignored Local.xcconfig

apple/project.yml

@@ -17,6 +17,9 @@ targets:
   VniDrop:
     type: application
     supportedDestinations: [iOS, macOS]
+    configFiles:
+      Debug: Signing.xcconfig
+      Release: Signing.xcconfig
     sources:
       - path: VniDrop
         excludes:
@@ -30,6 +33,10 @@ targets:
         CURRENT_PROJECT_VERSION: "1"
         GENERATE_INFOPLIST_FILE: NO
         INFOPLIST_FILE: VniDrop/Resources/Info.plist
+        # Mirror the Info.plist identity so Xcode's Identity editor shows it too
+        # (the editor reads these build settings, not the manual plist).
+        INFOPLIST_KEY_CFBundleDisplayName: VniDrop
+        INFOPLIST_KEY_LSApplicationCategoryType: public.app-category.utilities
         SWIFT_VERSION: "5.9"
         ENABLE_USER_SCRIPT_SANDBOXING: NO
         ASSETCATALOG_COMPILER_APPICON_NAME: AppIcon