Initial project setup - Phases 1-3 complete

UI/Pin/PinView.swift

@@ -0,0 +1,46 @@
+import SwiftUI
+import ProxyCore
+import GRDB
+
+struct PinView: View {
+    @State private var pinnedRequests: [CapturedTraffic] = []
+    @State private var observation: AnyDatabaseCancellable?
+
+    private let trafficRepo = TrafficRepository()
+
+    var body: some View {
+        Group {
+            if pinnedRequests.isEmpty {
+                EmptyStateView(
+                    icon: "pin.slash",
+                    title: "No Pinned Requests",
+                    subtitle: "Pin requests from the Home tab to save them here for quick access."
+                )
+            } else {
+                List {
+                    ForEach(pinnedRequests) { request in
+                        NavigationLink(value: request.id) {
+                            TrafficRowView(traffic: request)
+                        }
+                    }
+                }
+                .navigationDestination(for: Int64?.self) { id in
+                    if let id {
+                        RequestDetailView(trafficId: id)
+                    }
+                }
+            }
+        }
+        .navigationTitle("Pin")
+        .task {
+            observation = trafficRepo.observePinnedTraffic()
+                .start(in: DatabaseManager.shared.dbPool) { error in
+                    print("Pin observation error: \(error)")
+                } onChange: { pinned in
+                    withAnimation {
+                        pinnedRequests = pinned
+                    }
+                }
+        }
+    }
+}