diff --git a/src/context/SorokitProvider.test.tsx b/src/context/SorokitProvider.test.tsx
index 629888c..4706708 100644
--- a/src/context/SorokitProvider.test.tsx
+++ b/src/context/SorokitProvider.test.tsx
@@ -9,6 +9,8 @@ import { SorokitProvider } from "./SorokitProvider";
 import { useSorokit } from "./useSorokit";
 
 const TestComponent = () => {
+  const { address, account, balances, error, connectWallet, disconnectWallet, switchNetwork } = useSorokit();
+  
   const { address, account, balances, connectWallet, disconnectWallet, switchNetwork, refreshAccount, isLoadingAccount, error, errorHistory } = useSorokit();
 
   return (
@@ -16,6 +18,7 @@ const TestComponent = () => {
       <div data-testid="address">{address || "none"}</div>
       <div data-testid="account">{account ? account.sequence : "none"}</div>
       <div data-testid="balances">{balances.length}</div>
+      <div data-testid="error">{error || "none"}</div>
       <div data-testid="isLoadingAccount">{isLoadingAccount ? "true" : "false"}</div>
       <div data-testid="error">{error || "none"}</div>
       <div data-testid="errorHistoryCount">{errorHistory.length}</div>
@@ -83,7 +86,10 @@ describe("SorokitProvider", () => {
     } as unknown as ReturnType<typeof getClient>;
   });
 
-  it("disconnectWallet clears address, account, and balances", async () => {
+  it("disconnectWallet clears address, account, balances, and error", async () => {
+    mockClient.account.getAccount = vi.fn().mockResolvedValue({ data: null, error: "Account error" });
+    mockClient.account.getBalances = vi.fn().mockResolvedValue({ data: null, error: "Balances error" });
+
     renderWithProvider(<TestComponent />, { client: mockClient });
 
     const connectBtn = screen.getByText("Connect");
@@ -96,8 +102,7 @@ describe("SorokitProvider", () => {
     expect(screen.getByTestId("address")).toHaveTextContent("GABC");
 
     await waitFor(() => {
-      expect(screen.getByTestId("account")).toHaveTextContent("100");
-      expect(screen.getByTestId("balances")).toHaveTextContent("1");
+      expect(screen.getByTestId("error")).toHaveTextContent("Account error; Balances error");
     });
 
     await act(async () => {
@@ -107,6 +112,84 @@ describe("SorokitProvider", () => {
     expect(screen.getByTestId("address")).toHaveTextContent("none");
     expect(screen.getByTestId("account")).toHaveTextContent("none");
     expect(screen.getByTestId("balances")).toHaveTextContent("0");
+    expect(screen.getByTestId("error")).toHaveTextContent("none");
+  });
+
+  it("combines error strings when both getAccount and getBalances fail", async () => {
+    mockClient.account.getAccount = vi.fn().mockResolvedValue({ data: null, error: "Account failed" });
+    mockClient.account.getBalances = vi.fn().mockResolvedValue({ data: null, error: "Balances failed" });
+
+    renderWithProvider(<TestComponent />, { client: mockClient });
+
+    await act(async () => {
+      fireEvent.click(screen.getByText("Connect"));
+    });
+
+    await waitFor(() => {
+      expect(screen.getByTestId("error")).toHaveTextContent("Account failed; Balances failed");
+    });
+  });
+
+  it("shows single error when only getAccount fails", async () => {
+    mockClient.account.getAccount = vi.fn().mockResolvedValue({ data: null, error: "Account not found" });
+    mockClient.account.getBalances = vi.fn().mockResolvedValue({ data: [{ asset: "XLM", balance: "10" }], error: null });
+
+    renderWithProvider(<TestComponent />, { client: mockClient });
+
+    await act(async () => {
+      fireEvent.click(screen.getByText("Connect"));
+    });
+
+    await waitFor(() => {
+      expect(screen.getByTestId("error")).toHaveTextContent("Account not found");
+      expect(screen.getByTestId("balances")).toHaveTextContent("1");
+    });
+  });
+
+  it("shows single error when only getBalances fails", async () => {
+    mockClient.account.getAccount = vi.fn().mockResolvedValue({ data: { sequence: "100" }, error: null });
+    mockClient.account.getBalances = vi.fn().mockResolvedValue({ data: null, error: "Failed to fetch balances" });
+
+    renderWithProvider(<TestComponent />, { client: mockClient });
+
+    await act(async () => {
+      fireEvent.click(screen.getByText("Connect"));
+    });
+
+    await waitFor(() => {
+      expect(screen.getByTestId("error")).toHaveTextContent("Failed to fetch balances");
+      expect(screen.getByTestId("account")).toHaveTextContent("100");
+    });
+  });
+
+  it("clears error from previous session on reconnect", async () => {
+    mockClient.account.getAccount = vi.fn().mockResolvedValueOnce({ data: null, error: "Old error" });
+    mockClient.account.getBalances = vi.fn().mockResolvedValueOnce({ data: [], error: null });
+
+    renderWithProvider(<TestComponent />, { client: mockClient });
+
+    await act(async () => {
+      fireEvent.click(screen.getByText("Connect"));
+    });
+
+    await waitFor(() => {
+      expect(screen.getByTestId("error")).toHaveTextContent("Old error");
+    });
+
+    // Next connect with different address succeeds
+    mockClient.wallet.connect = vi.fn().mockResolvedValue({ data: { address: "GDEF" }, error: null });
+    mockClient.account.getAccount = vi.fn().mockResolvedValue({ data: { sequence: "200" }, error: null });
+    mockClient.account.getBalances = vi.fn().mockResolvedValue({ data: [{ asset: "XLM", balance: "50" }], error: null });
+
+    await act(async () => {
+      fireEvent.click(screen.getByText("Connect"));
+    });
+
+    await waitFor(() => {
+      expect(screen.getByTestId("address")).toHaveTextContent("GDEF");
+      expect(screen.getByTestId("error")).toHaveTextContent("none");
+      expect(screen.getByTestId("account")).toHaveTextContent("200");
+    });
   });
 
   it("connectWallet populates address on success", async () => {
diff --git a/src/context/SorokitProvider.tsx b/src/context/SorokitProvider.tsx
index ce78c5b..3777315 100644
--- a/src/context/SorokitProvider.tsx
+++ b/src/context/SorokitProvider.tsx
@@ -149,7 +149,12 @@ export function SorokitProvider({
 
   // Load account when address changes
   useEffect(() => {
-    if (!address) return;
+    setError(null);
+    if (!address) {
+      setAccount(null);
+      setBalances([]);
+      return;
+    }
 
     let active = true;
     const timerId = window.setTimeout(() => {
@@ -162,6 +167,10 @@ export function SorokitProvider({
           if (!active) return;
           if (accountRes.data) setAccount(accountRes.data);
           if (balancesRes.data) setBalances(balancesRes.data);
+          const combined = [accountRes.error, balancesRes.error]
+            .filter(Boolean)
+            .join("; ");
+          if (combined) setError(combined);
           if (accountRes.error && balancesRes.error) {
             reportError(
               `${accountRes.error}; ${balancesRes.error}`,
@@ -227,6 +236,12 @@ export function SorokitProvider({
   }, [reportError]);
 
   const disconnectWallet = useCallback(async () => {
+    await client.wallet.disconnect();
+    setAddress(null);
+    setAccount(null);
+    setBalances([]);
+    setError(null);
+  }, [client]);
     setIsDisconnecting(true);
     try {
       // A wallet adapter that throws (e.g. the extension went away
diff --git a/src/screens/Dashboard.test.tsx b/src/screens/Dashboard.test.tsx
index de37900..94e0e40 100644
--- a/src/screens/Dashboard.test.tsx
+++ b/src/screens/Dashboard.test.tsx
@@ -1,3 +1,72 @@
+import { render, screen, fireEvent } from "@testing-library/react";
+import { describe, it, expect, vi } from "vitest";
+import { Dashboard } from "./Dashboard";
+
+vi.mock("@/context/useSorokit", () => ({
+  useSorokit: vi.fn(() => ({
+    isConnected: true,
+    address: "GABC",
+    account: null,
+    balances: [],
+    network: { name: "testnet" },
+    error: null,
+    clearError: vi.fn(),
+  })),
+}));
+
+vi.mock("@/screens/WalletScreen", () => ({
+  WalletScreen: () => <div data-testid="wallet-screen">WalletScreen</div>,
+}));
+
+vi.mock("@/screens/AccountScreen", () => ({
+  AccountScreen: () => <div data-testid="account-screen">AccountScreen</div>,
+}));
+
+vi.mock("@/screens/TransactionsScreen", () => ({
+  TransactionsScreen: () => <div data-testid="transactions-screen">TransactionsScreen</div>,
+}));
+
+vi.mock("@/screens/SorobanScreen", () => ({
+  SorobanScreen: () => <div data-testid="soroban-screen">SorobanScreen</div>,
+}));
+
+vi.mock("@/screens/NetworkScreen", () => ({
+  NetworkScreen: () => <div data-testid="network-screen">NetworkScreen</div>,
+}));
+
+describe("Dashboard screen mounting", () => {
+  it("mounts only the default active screen (wallet) on load", () => {
+    render(<Dashboard />);
+
+    expect(screen.getByTestId("wallet-screen")).toBeInTheDocument();
+    expect(screen.queryByTestId("account-screen")).not.toBeInTheDocument();
+    expect(screen.queryByTestId("transactions-screen")).not.toBeInTheDocument();
+    expect(screen.queryByTestId("soroban-screen")).not.toBeInTheDocument();
+    expect(screen.queryByTestId("network-screen")).not.toBeInTheDocument();
+  });
+
+  it("unmounts previous screen and mounts only the new active screen when navigating", () => {
+    render(<Dashboard />);
+
+    // Click Account in sidebar
+    fireEvent.click(screen.getByRole("button", { name: /account/i }));
+    expect(screen.getByTestId("account-screen")).toBeInTheDocument();
+    expect(screen.queryByTestId("wallet-screen")).not.toBeInTheDocument();
+
+    // Click Transactions
+    fireEvent.click(screen.getByRole("button", { name: /transactions/i }));
+    expect(screen.getByTestId("transactions-screen")).toBeInTheDocument();
+    expect(screen.queryByTestId("account-screen")).not.toBeInTheDocument();
+
+    // Click Soroban
+    fireEvent.click(screen.getByRole("button", { name: /soroban/i }));
+    expect(screen.getByTestId("soroban-screen")).toBeInTheDocument();
+    expect(screen.queryByTestId("transactions-screen")).not.toBeInTheDocument();
+
+    // Click Network
+    fireEvent.click(screen.getByRole("button", { name: /network/i }));
+    expect(screen.getByTestId("network-screen")).toBeInTheDocument();
+    expect(screen.queryByTestId("soroban-screen")).not.toBeInTheDocument();
 import { fireEvent, render, screen } from "@testing-library/react";
 import { beforeEach, describe, expect, it, vi } from "vitest";
 
diff --git a/src/screens/Dashboard.tsx b/src/screens/Dashboard.tsx
index 84e017b..44c1a75 100644
--- a/src/screens/Dashboard.tsx
+++ b/src/screens/Dashboard.tsx
@@ -1,3 +1,6 @@
+import { useState } from "react";
+import { Sidebar, type NavSection } from "@/components/Sidebar";
+import { TopBar } from "@/components/TopBar";
 import { type ComponentType, lazy, Suspense, useCallback, useEffect, useState } from "react";
 
 import { ErrorBoundary } from "@/components/ErrorBoundary";
@@ -51,6 +54,10 @@ const PAGE_TITLES: Record<NavSection, string> = {
   nfts: "NFTs — Sorokit",
 };
 
+export function Dashboard() {
+  const [active, setActive] = useState<NavSection>("wallet");
+  const [sidebarOpen, setSidebarOpen] = useState(false);
+
 const SCREENS: Record<NavSection, ComponentType> = {
   wallet: WalletScreen,
   account: AccountScreen,
@@ -177,6 +184,12 @@ export function Dashboard({
         />
         <NetworkBanner active={active} />
         <main className="flex-1 min-h-0 overflow-y-auto">
+          <div className="max-w-[700px] mx-auto px-6 py-8 sm:px-10 sm:py-10 min-h-[300px]">
+            {active === "wallet" && <WalletScreen />}
+            {active === "account" && <AccountScreen />}
+            {active === "transactions" && <TransactionsScreen />}
+            {active === "soroban" && <SorobanScreen />}
+            {active === "network" && <NetworkScreen />}
           <div
             className="mx-auto px-6 py-8 sm:px-10 sm:py-10 min-h-[300px]"
             style={{ maxWidth: maxContentWidth }}