perf(ui): incremental paged home timeline — reloads stop being O(wallet)

DashWallet/Sources/Models/CoinJoin/CoinJoinWithdrawalStore.swift

@@ -85,6 +85,15 @@ final class CoinJoinWithdrawalStore {
         return loaded().contains(txid)
     }
 
+    /// Every recorded sweep txid (WIRE order) for the active wallet. Thread-safe.
+    /// The home feed uses this to build the combined "CoinJoin Withdrawals"
+    /// group from point lookups instead of scanning the whole history for the
+    /// tagged rows.
+    func allTxids() -> Set<Data> {
+        lock.lock(); defer { lock.unlock() }
+        return loaded()
+    }
+
     /// Clear a SINGLE wallet's recorded sweep txids (used by the per-wallet
     /// Remove flow — the removed wallet may not be the active one, so address it
     /// by explicit `walletIdHex`). Thread-safe. Invalidates the in-memory cache

DashWallet/Sources/UI/Home/Views/HomeView.swift

@@ -395,6 +395,28 @@ struct HomeViewContent<Content: View>: View {
                                 .shadow(color: .shadow, radius: 10, x: 0, y: 5)
                             }
                         }
+
+                        // Tail sentinel: reaching it pages the next
+                        // day-completed slice of history in. Its identity is
+                        // keyed on the page stamp so `onAppear` re-fires
+                        // while it stays visible (auto-continues when a page
+                        // adds no visible rows under the active filter).
+                        if viewModel.canLoadMoreHistory {
+                            HStack(spacing: 10) {
+                                SwiftUI.ProgressView()
+                                    .progressViewStyle(CircularProgressViewStyle())
+
+                                Text(NSLocalizedString("Loading more transactions", comment: "Home"))
+                                    .font(.caption)
+                                    .foregroundColor(Color.primary.opacity(0.5))
+                            }
+                            .frame(maxWidth: .infinity)
+                            .padding(.vertical, 16)
+                            .id(viewModel.historyPageStamp)
+                            .onAppear {
+                                viewModel.loadMoreHistory()
+                            }
+                        }
                     }
                 }
                 .padding(EdgeInsets(top: -20, leading: 0, bottom: 0, trailing: 0))