fix: splash screen uses actual app icon in a circle (Wenza style)

Replaces the custom 3-bar SwiftUI drawing with UIImage(named:"AppIcon")
clipped to a circle, matching the Wenza splash pattern exactly:
- Icon bounces in with spring (scale 0.82→1, opacity 0→1)
- "jarvis" wordmark fades in 320ms later
- Whole screen fades out at 1.6s, onDismiss fires at 1.9s
- Main app renders underneath so it's warm when the splash clears

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

Jarvis/JarvisApp.swift

@@ -5,33 +5,53 @@ import SwiftData
 import UIKit
 import BackgroundTasks
 
-// MARK: - Logo + splash
-
-/// The three-bar logo that mirrors the app icon.
-struct JarvisLogoMark: View {
-    var width: CGFloat = 180
-
-    var body: some View {
-        VStack(alignment: .center, spacing: 8) {
-            // Orange (short) · White (longest) · Grey (medium) — same ratios as icon
-            Capsule().fill(Palette.orange)
-                .frame(width: width * 0.48, height: width * 0.075)
-                .shadow(color: Palette.orange.opacity(0.55), radius: 10, y: 2)
-            Capsule().fill(Color.white)
-                .frame(width: width,          height: width * 0.075)
-            Capsule().fill(Color(hex: "888888"))
-                .frame(width: width * 0.74,   height: width * 0.075)
-        }
-    }
-}
+// MARK: - Splash
 
 struct SplashView: View {
+    var onDismiss: () -> Void
+
+    @State private var iconScale:   CGFloat = 0.82
+    @State private var iconOpacity: Double  = 0
+    @State private var markOpacity: Double  = 0
+    @State private var rootOpacity: Double  = 1
+
     var body: some View {
         ZStack {
             Color(hex: "0A0A0A").ignoresSafeArea()
-            VStack(spacing: 28) {
-                JarvisLogoMark(width: 180)
-                JarvisWordmark(size: 34)
+            VStack(spacing: 22) {
+                // App icon displayed as a circle
+                Group {
+                    if let img = UIImage(named: "AppIcon") {
+                        Image(uiImage: img)
+                            .resizable()
+                    } else {
+                        Circle().fill(Palette.surface)
+                    }
+                }
+                .frame(width: 108, height: 108)
+                .clipShape(Circle())
+                .shadow(color: Color.black.opacity(0.4), radius: 20, y: 6)
+                .scaleEffect(iconScale)
+                .opacity(iconOpacity)
+
+                JarvisWordmark(size: 28)
+                    .opacity(markOpacity)
+            }
+        }
+        .opacity(rootOpacity)
+        .onAppear {
+            withAnimation(.spring(response: 0.48, dampingFraction: 0.74).delay(0.08)) {
+                iconScale   = 1
+                iconOpacity = 1
+            }
+            withAnimation(.easeOut(duration: 0.28).delay(0.32)) {
+                markOpacity = 1
+            }
+            withAnimation(.easeIn(duration: 0.26).delay(1.6)) {
+                rootOpacity = 0
+            }
+            DispatchQueue.main.asyncAfter(deadline: .now() + 1.9) {
+                onDismiss()
             }
         }
     }
@@ -69,7 +89,7 @@ struct JarvisApp: App {
     @StateObject private var connectivity = ConnectivitySettings.shared
     @StateObject private var connManager = ConnectivityManager.shared
     @StateObject private var notifications = NotificationManager.shared
-    @State private var showSplash = true
+    @State private var splashDone = false
 
     // Single ModelContainer instance shared with BackgroundRefreshManager.
     private let container: ModelContainer = {
@@ -81,10 +101,7 @@ struct JarvisApp: App {
     var body: some Scene {
         WindowGroup {
             ZStack {
-                if showSplash {
-                    SplashView()
-                        .transition(.opacity)
-                } else {
+                // Main app always rendered underneath so it's ready when splash fades.
                 Group {
                     if settings.isConfigured {
                         RootTabView()
@@ -92,10 +109,11 @@ struct JarvisApp: App {
                         OnboardingView()
                     }
                 }
-                    .transition(.opacity)
+
+                if !splashDone {
+                    SplashView { splashDone = true }
                 }
             }
-            .animation(.easeOut(duration: 0.5), value: showSplash)
             .preferredColorScheme(appearanceMode.colorScheme)
             .environmentObject(settings)
             .environmentObject(store)
@@ -109,9 +127,6 @@ struct JarvisApp: App {
                 connManager.start()
                 await connManager.resolveAndActivate()
                 await notifications.bootstrap()
-                // Hold splash until setup is done, minimum 1.3 s for legibility.
-                try? await Task.sleep(nanoseconds: 1_300_000_000)
-                showSplash = false
             }
         }
         .modelContainer(container)