v26.10.1 (#1599)

* feat: AI translations at release, 7 new languages and regional fallback

* fix: proper plural forms for count strings and full translations

* fix: plural forms for selected, hidden and active counts

* fix: synced plugin updates failing on desktop and server-only plugins shown as stopped

* fix: restore rounded corners on app icons and favicon

* feat: desktop app auto updates with automatic, ask first or never modes

* feat: community and custom plugin registries

* feat: plugin guide for AI tools in the SDK with a lint check

* fix: keep the terminal WebSocket open past nginx's 60s default (#1588)

* chore: update changelog

* feat: show plugin download counts only and stop CI builds inflating them

* feat: hide installed plugins in the browse tab by default

* chore: pin bundled plugins to latest releases

* chore: update translations

* fix: focusing a saved password field and saving no longer erases it

* fix: tell desktop users when their 2.8 data needs 2.9 first

* fix: point windows update info at the x64 installer

* fix: keep desktop client tunnel sockets alive behind proxies

* chore: pin bundled plugins to latest releases

* fix: cover client tunnel keepalive in the c2s runtime tests

* fix: typing after opening a host no longer goes to the host search

* fix: accept tab and = separators in SSH config import (#1598)

* chore: update changelog

* chore: drop plugin versions from core changelog

* chore: update translations

* chore: lint, format, and bump version to 26.10.1

---------

Co-authored-by: Darnel Hunter <68697450+innotelinc@users.noreply.github.com>
Co-authored-by: Iain <Iain1970@protonmail.com>

src/backend/tests/electron/c2s-runtime.test.ts

@@ -61,6 +61,7 @@ function setup() {
     getC2SRelayHeaders: headers,
     getWebSocketOptions: (_url: string, options: unknown) => options,
     attachC2SAuth: vi.fn(),
+    keepC2SSocketAlive: vi.fn(),
     logToFile: vi.fn(),
     emitC2STunnelStatuses: vi.fn(),
     checkLocalPortAvailable: async () => ({ available: true }),
@@ -177,3 +178,32 @@ describe("client tunnel runtime authentication", () => {
     });
   });
 });
+
+describe("client tunnel socket keepalive", () => {
+  it("pings an open socket until it closes", () => {
+    vi.useFakeTimers();
+    try {
+      const context = vm.createContext({
+        setInterval,
+        clearInterval,
+        WebSocket: { OPEN: 1 },
+      });
+      vm.runInContext(
+        section("function keepC2SSocketAlive(", "// C2S (client-to-server)"),
+        context,
+      );
+      const ws = Object.assign(new EventEmitter(), {
+        readyState: 1,
+        ping: vi.fn(),
+      });
+      context.keepC2SSocketAlive(ws);
+      vi.advanceTimersByTime(50_000);
+      expect(ws.ping).toHaveBeenCalledTimes(2);
+      ws.emit("close");
+      vi.advanceTimersByTime(50_000);
+      expect(ws.ping).toHaveBeenCalledTimes(2);
+    } finally {
+      vi.useRealTimers();
+    }
+  });
+});