feat: hero card layout in all pills, cache-while-loading, logo splash screen

- Every pill (F1, Tech, AI, Cloud, HomeLab…) now shows the same hero card
  layout as "All" — first story is the big featured card, rest follow as rows
- "All" retains its full multi-section front page (US / Tech / AI / Sport…)
- Topic pill headers use the pill name instead of "TOP STORIES"
- filteredStories now falls back to cached SwiftData rows while loading, so
  switching to F1 or Tech shows cached cards instantly instead of a blank list
- Logo splash screen (3 pill bars + jarvis wordmark) shows on launch and fades
  out after setup completes; minimum 1.3 s so it's always readable
- JarvisWordmark moved to Theme.swift so SplashView and feed can share it

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

Jarvis/JarvisApp.swift

@@ -5,6 +5,38 @@ 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)
+        }
+    }
+}
+
+struct SplashView: View {
+    var body: some View {
+        ZStack {
+            Color(hex: "0A0A0A").ignoresSafeArea()
+            VStack(spacing: 28) {
+                JarvisLogoMark(width: 180)
+                JarvisWordmark(size: 34)
+            }
+        }
+    }
+}
+
 final class AppDelegate: NSObject, UIApplicationDelegate {
     func application(_ application: UIApplication,
                      didFinishLaunchingWithOptions launchOptions: [UIApplication.LaunchOptionsKey: Any]? = nil) -> Bool {
@@ -37,6 +69,7 @@ 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
 
     // Single ModelContainer instance shared with BackgroundRefreshManager.
     private let container: ModelContainer = {
@@ -47,13 +80,22 @@ struct JarvisApp: App {
 
     var body: some Scene {
         WindowGroup {
-            Group {
-                if settings.isConfigured {
-                    RootTabView()
+            ZStack {
+                if showSplash {
+                    SplashView()
+                        .transition(.opacity)
                 } else {
-                    OnboardingView()
+                    Group {
+                        if settings.isConfigured {
+                            RootTabView()
+                        } else {
+                            OnboardingView()
+                        }
+                    }
+                    .transition(.opacity)
                 }
             }
+            .animation(.easeOut(duration: 0.5), value: showSplash)
             .preferredColorScheme(appearanceMode.colorScheme)
             .environmentObject(settings)
             .environmentObject(store)
@@ -62,13 +104,14 @@ struct JarvisApp: App {
             .environmentObject(connManager)
             .environmentObject(notifications)
             .task {
-                // Wire the shared container before scheduling BG work.
                 BackgroundRefreshManager.container = container
                 BackgroundRefreshManager.scheduleFeedRefresh()
-
                 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)