fix: stop connection screens crashing outside the connection log provider

src/ui/components/connection/ConnectionLogPanel.tsx

@@ -1,5 +1,5 @@
 import React, { useEffect, useRef, useState } from "react";
-import { useConnectionLog } from "@/ssh/connection-log/ConnectionLogContext.tsx";
+import { useOptionalConnectionLog } from "@/ssh/connection-log/ConnectionLogContext.tsx";
 import { useTranslation } from "react-i18next";
 import { copyToClipboard } from "@/lib/clipboard.ts";
 import { Button } from "@/components/button.tsx";
@@ -34,20 +34,21 @@ export function ConnectionLogPanel({
   className,
 }: ConnectionLogPanelProps) {
   const { t } = useTranslation();
+  const connectionLog = useOptionalConnectionLog();
   const { logs, clearLogs, isExpanded, toggleExpanded, setIsExpanded } =
-    useConnectionLog();
+    connectionLog ?? {};
   const lastLogRef = useRef<HTMLDivElement>(null);
   const [manuallyCollapsed, setManuallyCollapsed] = useState(false);
 
   useEffect(() => {
-    if (hasConnectionError) {
+    if (hasConnectionError && setIsExpanded) {
       setManuallyCollapsed(false);
       setIsExpanded(true);
     }
   }, [hasConnectionError, setIsExpanded]);
 
   useEffect(() => {
-    if (isConnected && !hasConnectionError && !isConnecting) {
+    if (isConnected && !hasConnectionError && !isConnecting && clearLogs) {
       clearLogs();
       setManuallyCollapsed(false);
     }
@@ -60,7 +61,9 @@ export function ConnectionLogPanel({
   }, [logs]);
 
   const shouldShow =
-    !isConnected && (isConnecting || hasConnectionError || logs.length > 0);
+    !!connectionLog &&
+    !isConnected &&
+    (isConnecting || hasConnectionError || logs.length > 0);
 
   if (!shouldShow) {
     return null;

src/ui/ssh/connection-log/ConnectionLogContext.tsx

@@ -88,3 +88,9 @@ export function useConnectionLog() {
   }
   return context;
 }
+
+// Loading and error screens render outside any provider, so they get undefined
+// instead of a crash.
+export function useOptionalConnectionLog() {
+  return useContext(ConnectionLogContext);
+}

src/ui/tests/components/connection/ConnectionScreen.test.tsx

@@ -0,0 +1,46 @@
+import { describe, it, expect, vi, afterEach } from "vitest";
+import { render, screen, cleanup } from "@testing-library/react";
+
+vi.mock("react-i18next", () => ({
+  useTranslation: () => ({ t: (key: string) => key }),
+}));
+
+import { ConnectionScreen } from "../../../components/connection/ConnectionScreen";
+import { ConnectionLogProvider } from "../../../ssh/connection-log/ConnectionLogContext";
+
+afterEach(cleanup);
+
+describe("ConnectionScreen", () => {
+  // Loading and host-not-found screens render before the provider is mounted,
+  // which used to throw and take down the whole RDP/VNC/Telnet tab.
+  it("renders without a ConnectionLogProvider", () => {
+    expect(() =>
+      render(<ConnectionScreen status="connecting" message="common.loading" />),
+    ).not.toThrow();
+
+    expect(screen.getByText("common.loading")).toBeTruthy();
+  });
+
+  it("renders the disconnected state without a provider", () => {
+    expect(() =>
+      render(
+        <ConnectionScreen
+          status="disconnected"
+          message="guacamole.hostNotFound"
+        />,
+      ),
+    ).not.toThrow();
+
+    expect(screen.getByText("guacamole.hostNotFound")).toBeTruthy();
+  });
+
+  it("still shows the connection log when a provider is present", () => {
+    render(
+      <ConnectionLogProvider>
+        <ConnectionScreen status="connecting" message="common.loading" />
+      </ConnectionLogProvider>,
+    );
+
+    expect(screen.getByText(/terminal\.connectionLogTitle/)).toBeTruthy();
+  });
+});