fix(web): scope Suspense to page body; guard formatConfig against null config

Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>

web/src/App.test.tsx

@@ -24,7 +24,9 @@ test("renders navigation and redirects to domains", async () => {
   )
   // Sidebar nav also renders a "Domains" link label, so scope the assertion
   // to the routed page content to unambiguously confirm the redirect + page.
+  // Suspense is now scoped inside <main>, so <main> mounts with the loading
+  // fallback first — await the lazy chunk resolving to the actual page text.
   const main = await screen.findByRole("main")
-  expect(within(main).getByText("Domains")).toBeInTheDocument()
+  expect(await within(main).findByText("Domains")).toBeInTheDocument()
   expect(screen.getByRole("link", { name: /domains/i })).toBeInTheDocument()
 })

web/src/App.tsx

@@ -17,17 +17,22 @@ const ChannelsPage = lazy(() => import("@/pages/ChannelsPage").then((m) => ({ de
 
 // Every non-auth route shares the same guard + chrome; wrapping here keeps
 // each <Route> below a one-liner instead of repeating both on every page.
+// Suspense is scoped to just the page body (not Layout) so lazy-loading a
+// route doesn't collapse the sidebar/header chrome to the fallback on nav.
 function Protected({ children }: { children: ReactNode }) {
   return (
     <ProtectedRoute>
-      <Layout>{children}</Layout>
+      <Layout>
+        <Suspense fallback={<div className="p-6 text-muted-foreground">Загрузка…</div>}>
+          {children}
+        </Suspense>
+      </Layout>
     </ProtectedRoute>
   )
 }
 
 export function App() {
   return (
-    <Suspense fallback={<div className="p-6 text-muted-foreground">Загрузка…</div>}>
     <Routes>
       <Route path="/login" element={<LoginPage />} />
       <Route path="/register" element={<RegisterPage />} />
@@ -39,6 +44,5 @@ export function App() {
       <Route path="/schedule" element={<Protected><SchedulePage /></Protected>} />
       <Route path="/channels" element={<Protected><ChannelsPage /></Protected>} />
     </Routes>
-    </Suspense>
   )
 }

web/src/pages/ChannelsPage.tsx

@@ -74,7 +74,7 @@ const EMPTY_FORM: ChannelForm = { type: "telegram", chatId: "", botToken: "", ur
 // (Object.entries по всему config печатал бы любое поле, включая случайно
 // сохранённый секрет).
 function formatConfig(type: string, config: object): string {
-  const c = config as Record<string, unknown>
+  const c = (config ?? {}) as Record<string, unknown>
   if (type === "telegram") return c.chat_id ? `chat_id: ${String(c.chat_id)}` : ""
   if (type === "webhook") return c.url ? `url: ${String(c.url)}` : ""
   return ""