ios: add pull to refresh

ios/Packages/Sybil/Sources/Sybil/SybilChatTranscriptView.swift

@@ -5,6 +5,7 @@ struct SybilChatTranscriptView: View {
     var messages: [Message]
     var isLoading: Bool
     var isSending: Bool
+    var onRefresh: (() async -> Void)? = nil
     @State private var hasHandledInitialTranscriptScroll = false
 
     private var hasPendingAssistant: Bool {
@@ -51,6 +52,10 @@ struct SybilChatTranscriptView: View {
                 .padding(.vertical, 18)
             }
             .frame(maxWidth: .infinity, alignment: .leading)
+            .refreshable {
+                await onRefresh?()
+            }
+            .tint(SybilTheme.primary)
             .scrollDismissesKeyboard(.interactively)
             .onAppear {
                 scrollToBottom(with: proxy, animated: false)

ios/Packages/Sybil/Sources/Sybil/SybilPhoneShellView.swift

@@ -132,6 +132,10 @@ private struct SybilPhoneSidebarRoot: View {
                     }
                     .padding(10)
                 }
+                .refreshable {
+                    await viewModel.refreshCollectionsFromUser()
+                }
+                .tint(SybilTheme.primary)
             }
         }
         .background(SybilTheme.panelGradient)

ios/Packages/Sybil/Sources/Sybil/SybilSearchResultsView.swift

@@ -6,6 +6,7 @@ struct SybilSearchResultsView: View {
     var isLoading: Bool
     var isRunning: Bool
     var isStartingChat: Bool = false
+    var onRefresh: (() async -> Void)? = nil
     var onStartChat: (() -> Void)? = nil
 
     var body: some View {
@@ -100,6 +101,10 @@ struct SybilSearchResultsView: View {
             .padding(.horizontal, 14)
             .padding(.vertical, 20)
         }
+        .refreshable {
+            await onRefresh?()
+        }
+        .tint(SybilTheme.primary)
         .scrollDismissesKeyboard(.interactively)
         .frame(maxWidth: .infinity, alignment: .leading)
     }

ios/Packages/Sybil/Sources/Sybil/SybilSidebarView.swift

@@ -149,6 +149,10 @@ struct SybilSidebarView: View {
                     }
                     .padding(10)
                 }
+                .refreshable {
+                    await viewModel.refreshCollectionsFromUser()
+                }
+                .tint(SybilTheme.primary)
             }
 
         }

ios/Packages/Sybil/Sources/Sybil/SybilViewModel.swift

@@ -471,6 +471,34 @@ final class SybilViewModel {
         select(nextSelection)
     }
 
+    func refreshCollectionsFromUser() async {
+        guard isAuthenticated else {
+            return
+        }
+
+        errorMessage = nil
+
+        guard draftKind == nil else {
+            await refreshCollectionsPreservingDraft()
+            return
+        }
+
+        await refreshCollections(preferredSelection: selectedItem)
+    }
+
+    func refreshSelectionFromUser() async {
+        guard isAuthenticated, !isSending, !isCreatingSearchChat else {
+            return
+        }
+
+        guard selectedItem != nil, draftKind == nil else {
+            return
+        }
+
+        errorMessage = nil
+        await refreshSelectionIfNeeded()
+    }
+
     func deleteItem(_ selection: SidebarSelection) async {
         guard isAuthenticated else {
             return
@@ -710,6 +738,30 @@ final class SybilViewModel {
         settings.persist()
     }
 
+    private func refreshCollectionsPreservingDraft() async {
+        isLoadingCollections = true
+
+        do {
+            let client = try client()
+            async let chatsValue = client.listChats()
+            async let searchesValue = client.listSearches()
+            let (nextChats, nextSearches) = try await (chatsValue, searchesValue)
+
+            chats = nextChats
+            searches = nextSearches
+
+            SybilLog.info(
+                SybilLog.app,
+                "Refreshed collections for draft: \(nextChats.count) chats, \(nextSearches.count) searches"
+            )
+        } catch {
+            errorMessage = normalizeAPIError(error)
+            SybilLog.error(SybilLog.app, "Refresh draft collections failed", error: error)
+        }
+
+        isLoadingCollections = false
+    }
+
     private func refreshCollections(
         preferredSelection: SidebarSelection?,
         refreshSelection: Bool = true

ios/Packages/Sybil/Sources/Sybil/SybilWorkspaceView.swift

@@ -127,7 +127,10 @@ struct SybilWorkspaceView: View {
                         search: viewModel.selectedSearch,
                         isLoading: viewModel.isLoadingSelection,
                         isRunning: viewModel.isSending,
-                        isStartingChat: viewModel.isCreatingSearchChat
+                        isStartingChat: viewModel.isCreatingSearchChat,
+                        onRefresh: {
+                            await viewModel.refreshSelectionFromUser()
+                        }
                     ) {
                         Task {
                             await viewModel.startChatFromSelectedSearch()
@@ -137,7 +140,10 @@ struct SybilWorkspaceView: View {
                     SybilChatTranscriptView(
                         messages: viewModel.displayedMessages,
                         isLoading: viewModel.isLoadingSelection,
-                        isSending: viewModel.isSending
+                        isSending: viewModel.isSending,
+                        onRefresh: {
+                            await viewModel.refreshSelectionFromUser()
+                        }
                     )
                     .id(transcriptScrollContextID)
                 }