Initial project setup - Phases 1-3 complete

UI/Home/TrafficRowView.swift

@@ -0,0 +1,50 @@
+import SwiftUI
+import ProxyCore
+
+struct TrafficRowView: View {
+    let traffic: CapturedTraffic
+
+    var body: some View {
+        VStack(alignment: .leading, spacing: 6) {
+            HStack(spacing: 6) {
+                MethodBadge(method: traffic.method)
+                StatusBadge(statusCode: traffic.statusCode)
+
+                Spacer()
+
+                Text(traffic.startDate, format: .dateTime.hour().minute().second().secondFraction(.fractional(3)))
+                    .font(.caption2)
+                    .foregroundStyle(.secondary)
+
+                Text(traffic.formattedDuration)
+                    .font(.caption2)
+                    .foregroundStyle(.secondary)
+            }
+
+            Text(traffic.url)
+                .font(.caption)
+                .lineLimit(3)
+                .foregroundStyle(.primary)
+
+            HStack(spacing: 12) {
+                if traffic.requestBodySize > 0 {
+                    Label(formatBytes(traffic.requestBodySize), systemImage: "arrow.up.circle.fill")
+                        .font(.caption2)
+                        .foregroundStyle(.green)
+                }
+                if traffic.responseBodySize > 0 {
+                    Label(formatBytes(traffic.responseBodySize), systemImage: "arrow.down.circle.fill")
+                        .font(.caption2)
+                        .foregroundStyle(.blue)
+                }
+            }
+        }
+        .padding(.vertical, 4)
+    }
+
+    private func formatBytes(_ bytes: Int) -> String {
+        if bytes < 1024 { return "\(bytes) B" }
+        if bytes < 1_048_576 { return String(format: "%.1f KB", Double(bytes) / 1024) }
+        return String(format: "%.1f MB", Double(bytes) / 1_048_576)
+    }
+}