restore: original UI views from first build, keep fixed models/API

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

ios/Platform 1.44.16 AM/Platform/Shared/Components/LoadingView.swift

@@ -0,0 +1,72 @@
+import SwiftUI
+
+struct LoadingView: View {
+    var message: String = "Loading..."
+
+    var body: some View {
+        VStack(spacing: 16) {
+            ProgressView()
+                .controlSize(.large)
+                .tint(Color.accentWarm)
+            Text(message)
+                .font(.subheadline)
+                .foregroundStyle(Color.text3)
+        }
+        .frame(maxWidth: .infinity, maxHeight: .infinity)
+        .background(Color.canvas)
+    }
+}
+
+struct ErrorBanner: View {
+    let message: String
+    var onRetry: (() -> Void)?
+
+    var body: some View {
+        HStack(spacing: 12) {
+            Image(systemName: "exclamationmark.triangle.fill")
+                .foregroundStyle(Color.error)
+
+            Text(message)
+                .font(.subheadline)
+                .foregroundStyle(Color.text2)
+
+            Spacer()
+
+            if let onRetry {
+                Button("Retry") {
+                    onRetry()
+                }
+                .font(.subheadline.weight(.semibold))
+                .foregroundStyle(Color.accentWarm)
+            }
+        }
+        .padding(12)
+        .background(Color.error.opacity(0.06))
+        .clipShape(RoundedRectangle(cornerRadius: 12))
+    }
+}
+
+struct EmptyStateView: View {
+    let icon: String
+    let title: String
+    let subtitle: String
+
+    var body: some View {
+        VStack(spacing: 12) {
+            Image(systemName: icon)
+                .font(.system(size: 40))
+                .foregroundStyle(Color.text4)
+
+            Text(title)
+                .font(.headline)
+                .foregroundStyle(Color.text2)
+
+            Text(subtitle)
+                .font(.subheadline)
+                .foregroundStyle(Color.text3)
+                .multilineTextAlignment(.center)
+        }
+        .padding(40)
+        .frame(maxWidth: .infinity)
+    }
+}