Add edit-connection flow

Edit reuses AddConnectionView with an `editing:` parameter that prefills the
form and updates in-place; password field becomes optional ("leave blank to
keep current"). Surfaced via context menu and a leading-edge swipe action on
each saved row.

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>

Packages/VNCUI/Sources/VNCUI/Edit/AddConnectionView.swift

@@ -19,6 +19,7 @@ public struct AddConnectionView: View {
     @Environment(\.dismiss) private var dismiss
 
     let prefill: AddConnectionPrefill?
+    let editing: SavedConnection?
 
     @State private var displayName = ""
     @State private var host = ""
@@ -30,11 +31,15 @@ public struct AddConnectionView: View {
     @State private var clipboardSync = true
     @State private var viewOnly = false
     @State private var notes = ""
+    @State private var hasLoadedExisting = false
 
-    public init(prefill: AddConnectionPrefill? = nil) {
+    public init(prefill: AddConnectionPrefill? = nil, editing: SavedConnection? = nil) {
         self.prefill = prefill
+        self.editing = editing
     }
 
+    private var isEditing: Bool { editing != nil }
+
     public var body: some View {
         NavigationStack {
             Form {
@@ -51,7 +56,8 @@ public struct AddConnectionView: View {
                         #endif
                 }
                 Section("Authentication") {
-                    SecureField("VNC password", text: $password)
+                    SecureField(isEditing ? "Replace password (leave blank to keep current)" : "VNC password",
+                                text: $password)
                     Text("Stored in iOS Keychain (this device only).")
                         .font(.caption)
                         .foregroundStyle(.secondary)
@@ -86,7 +92,7 @@ public struct AddConnectionView: View {
                         .lineLimit(2...6)
                 }
             }
-            .navigationTitle("New Connection")
+            .navigationTitle(isEditing ? "Edit Connection" : "New Connection")
             #if os(iOS)
             .navigationBarTitleDisplayMode(.inline)
             #endif
@@ -95,38 +101,66 @@ public struct AddConnectionView: View {
                     Button("Cancel") { dismiss() }
                 }
                 ToolbarItem(placement: .confirmationAction) {
-                    Button("Save") { save() }
+                    Button(isEditing ? "Save" : "Add") { save() }
                         .disabled(displayName.isEmpty || host.isEmpty)
                 }
             }
-            .onAppear { applyPrefillIfNeeded() }
+            .onAppear { loadExistingIfNeeded() }
         }
     }
 
-    private func applyPrefillIfNeeded() {
-        guard let prefill, displayName.isEmpty, host.isEmpty else { return }
-        displayName = prefill.displayName
-        host = prefill.host
-        port = String(prefill.port)
+    private func loadExistingIfNeeded() {
+        guard !hasLoadedExisting else { return }
+        hasLoadedExisting = true
+        if let existing = editing {
+            displayName = existing.displayName
+            host = existing.host
+            port = String(existing.port)
+            colorTag = existing.colorTag
+            quality = existing.quality
+            inputMode = existing.inputMode
+            clipboardSync = existing.clipboardSyncEnabled
+            viewOnly = existing.viewOnly
+            notes = existing.notes
+        } else if let prefill, displayName.isEmpty, host.isEmpty {
+            displayName = prefill.displayName
+            host = prefill.host
+            port = String(prefill.port)
+        }
     }
 
     private func save() {
         let portInt = Int(port) ?? 5900
-        let connection = SavedConnection(
-            displayName: displayName,
-            host: host,
-            port: portInt,
-            colorTag: colorTag,
-            quality: quality,
-            inputMode: inputMode,
-            viewOnly: viewOnly,
-            curtainMode: false,
-            clipboardSyncEnabled: clipboardSync,
-            notes: notes
-        )
-        context.insert(connection)
-        if !password.isEmpty {
-            try? KeychainService().storePassword(password, account: connection.keychainTag)
+        if let existing = editing {
+            existing.displayName = displayName
+            existing.host = host
+            existing.port = portInt
+            existing.colorTag = colorTag
+            existing.quality = quality
+            existing.inputMode = inputMode
+            existing.clipboardSyncEnabled = clipboardSync
+            existing.viewOnly = viewOnly
+            existing.notes = notes
+            if !password.isEmpty {
+                try? KeychainService().storePassword(password, account: existing.keychainTag)
+            }
+        } else {
+            let connection = SavedConnection(
+                displayName: displayName,
+                host: host,
+                port: portInt,
+                colorTag: colorTag,
+                quality: quality,
+                inputMode: inputMode,
+                viewOnly: viewOnly,
+                curtainMode: false,
+                clipboardSyncEnabled: clipboardSync,
+                notes: notes
+            )
+            context.insert(connection)
+            if !password.isEmpty {
+                try? KeychainService().storePassword(password, account: connection.keychainTag)
+            }
         }
         try? context.save()
         dismiss()

Packages/VNCUI/Sources/VNCUI/List/ConnectionListView.swift

@@ -10,6 +10,7 @@ public struct ConnectionListView: View {
     @State private var showingAdd = false
     @State private var showingSettings = false
     @State private var addPrefill: AddConnectionPrefill?
+    @State private var editingConnection: SavedConnection?
     @State private var path: [SessionRoute] = []
     @State private var resolvingHostID: String?
 
@@ -59,6 +60,9 @@ public struct ConnectionListView: View {
             .sheet(isPresented: $showingAdd) {
                 AddConnectionView(prefill: addPrefill)
             }
+            .sheet(item: $editingConnection) { connection in
+                AddConnectionView(editing: connection)
+            }
             .sheet(isPresented: $showingSettings) {
                 SettingsView()
             }
@@ -121,6 +125,11 @@ public struct ConnectionListView: View {
                         ConnectionCard(connection: connection)
                     }
                     .contextMenu {
+                        Button {
+                            editingConnection = connection
+                        } label: {
+                            Label("Edit", systemImage: "pencil")
+                        }
                         #if os(iOS)
                         Button {
                             openWindow(value: connection.id)
@@ -134,7 +143,15 @@ public struct ConnectionListView: View {
                             Label("Delete", systemImage: "trash")
                         }
                     }
-                    .swipeActions {
+                    .swipeActions(edge: .leading) {
+                        Button {
+                            editingConnection = connection
+                        } label: {
+                            Label("Edit", systemImage: "pencil")
+                        }
+                        .tint(.blue)
+                    }
+                    .swipeActions(edge: .trailing) {
                         Button(role: .destructive) {
                             delete(connection)
                         } label: {