fix: address Copilot review comments for splash screen

- Use runInMain utility instead of DispatchQueue.main.asyncAfter
- Use LaunchFinishedAction and Redux pattern instead of direct state mutation
- Change TypewriterView Task type from Task<Void, Error>? to Task<Void, Never>?
  since the task doesn't throw errors

🤖 Generated with [Claude Code](https://claude.com/claude-code)

Co-Authored-By: Claude <[email protected]>

Author: graycreate

V2er/State/DataFlow/Actions/GlobalActions.swift

@@ -40,6 +40,10 @@ struct ShowToastAction: Action {
     var icon: String = .empty
 }
 
+struct LaunchFinishedAction: Action {
+    var target: Reducer = R
+}
+
 
 func globalStateReducer(_ state: GlobalState, _ action: Action?) -> (GlobalState, Action?) {
     var state = state
@@ -50,6 +54,9 @@ func globalStateReducer(_ state: GlobalState, _ action: Action?) -> (GlobalState
             state.toast.icon = action.icon
             state.toast.isPresented = true
             break
+        case _ as LaunchFinishedAction:
+            state.launchFinished = true
+            break
         default:
             break
     }

V2er/View/Splash/SplashView.swift

@@ -44,15 +44,13 @@ struct SplashView: View {
         }
         .onAppear {
             // Show slogan after a short delay
-            DispatchQueue.main.asyncAfter(deadline: .now() + 0.3) {
+            runInMain(delay: 300) {
                 showSlogan = true
             }
 
             // Hide splash after animation completes
-            DispatchQueue.main.asyncAfter(deadline: .now() + 1.2) {
-                withAnimation(.easeOut(duration: 0.3)) {
-                    store.appState.globalState.launchFinished = true
-                }
+            runInMain(delay: 1200) {
+                store.dispatch(LaunchFinishedAction(), animation: .easeOut(duration: 0.3))
             }
         }
     }

V2er/View/Splash/TypewriterView.swift

@@ -13,7 +13,7 @@ struct TypewriterView: View {
     var easeIn: Bool = true
 
     @State private var animatedText: AttributedString = ""
-    @State private var typingTask: Task<Void, Error>?
+    @State private var typingTask: Task<Void, Never>?
     @State private var hasAppeared = false
 
     var body: some View {
@@ -43,7 +43,7 @@ struct TypewriterView: View {
             var index = animatedText.startIndex
 
             while index < animatedText.endIndex {
-                try Task.checkCancellation()
+                guard !Task.isCancelled else { return }
 
                 // Update the style
                 animatedText[animatedText.startIndex...index]
@@ -65,7 +65,7 @@ struct TypewriterView: View {
                 }
 
                 // Wait
-                try await Task.sleep(for: delay)
+                try? await Task.sleep(for: delay)
 
                 // Advance the index, character by character
                 index = animatedText.index(afterCharacter: index)