fix: resolve iOS 26 deprecation warnings

- Text '+' concatenation → HStack (MealSectionView)
- UIScreen.main → UIWindowScene.screen (EntryListView, ArticleWebView)

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

ios/Platform/Platform/Features/Fitness/Views/MealSectionView.swift

@@ -47,12 +47,14 @@ struct MealSectionView: View {
 
                     Spacer()
 
+                    HStack(spacing: 2) {
                         Text("\(Int(totalCalories))")
                             .font(.title3.weight(.bold))
                             .foregroundStyle(Color.mealColor(for: mealType.rawValue))
-                    + Text(" kcal")
+                        Text("kcal")
                             .font(.caption.weight(.medium))
                             .foregroundStyle(Color.textSecondary)
+                    }
 
                     Image(systemName: "chevron.right")
                         .font(.caption.weight(.medium))

ios/Platform/Platform/Features/Reader/Views/ArticleWebView.swift

@@ -16,7 +16,8 @@ final class ArticleRenderer {
 
         // Create at screen size so WebKit initializes the GPU compositor
         // during warmup, not on first article open.
-        webView = WKWebView(frame: UIScreen.main.bounds, configuration: config)
+        let screenBounds = (UIApplication.shared.connectedScenes.first as? UIWindowScene)?.screen.bounds ?? CGRect(x: 0, y: 0, width: 393, height: 852)
+        webView = WKWebView(frame: screenBounds, configuration: config)
         webView.isOpaque = false
         webView.backgroundColor = .clear
         webView.scrollView.isScrollEnabled = true

ios/Platform/Platform/Features/Reader/Views/EntryListView.swift

@@ -14,9 +14,10 @@ struct EntryListView: View {
     @State private var cumulativeUp: CGFloat = 0
     @State private var markedByScroll: Set<Int> = []
 
-    // Viewport height — measured once from screen bounds.
-    // Safe because this view only appears on iPhone in portrait/landscape.
-    private var viewportHeight: CGFloat { UIScreen.main.bounds.height }
+    // Viewport height — use the first connected scene's screen.
+    private var viewportHeight: CGFloat {
+        (UIApplication.shared.connectedScenes.first as? UIWindowScene)?.screen.bounds.height ?? 800
+    }
 
     // Fixed threshold — per-entry deltas are small (~1-2pt each),
     // so 100pt accumulates after scrolling roughly one screenful.