refactor(ui): remove unused last-route restore helpers

ui/src/lib/last-route.ts

@@ -1,5 +1,4 @@
 const LAST_ROUTE_STORAGE_KEY = 'ccs-dashboard:last-route';
-const NON_RESTORABLE_PATHS = new Set(['/login']);
 
 export function storeLastRoute(pathname: string, search = '', hash = ''): void {
   try {
@@ -8,30 +7,3 @@ export function storeLastRoute(pathname: string, search = '', hash = ''): void {
     // Ignore storage failures (private mode, quota, etc.)
   }
 }
-
-export function getStoredLastRoute(): string | null {
-  try {
-    const route = localStorage.getItem(LAST_ROUTE_STORAGE_KEY);
-    if (!route || !route.startsWith('/')) {
-      return null;
-    }
-
-    const pathOnly = route.split(/[?#]/, 1)[0];
-    if (NON_RESTORABLE_PATHS.has(pathOnly)) {
-      return null;
-    }
-
-    return route;
-  } catch {
-    return null;
-  }
-}
-
-export function shouldRestoreRoute(route: string | null): route is string {
-  if (!route) {
-    return false;
-  }
-
-  const pathOnly = route.split(/[?#]/, 1)[0];
-  return pathOnly !== '/' && !NON_RESTORABLE_PATHS.has(pathOnly);
-}

ui/tests/unit/ui/lib/last-route.test.ts

@@ -0,0 +1,34 @@
+import { beforeEach, describe, expect, it, vi } from 'vitest';
+import { storeLastRoute } from '@/lib/last-route';
+
+const LAST_ROUTE_STORAGE_KEY = 'ccs-dashboard:last-route';
+
+describe('storeLastRoute', () => {
+  beforeEach(() => {
+    vi.clearAllMocks();
+  });
+
+  it('writes pathname with search and hash', () => {
+    storeLastRoute('/accounts', '?tab=auth', '#matrix');
+
+    expect(localStorage.setItem).toHaveBeenCalledWith(
+      LAST_ROUTE_STORAGE_KEY,
+      '/accounts?tab=auth#matrix'
+    );
+  });
+
+  it('writes pathname when search and hash are omitted', () => {
+    storeLastRoute('/health');
+
+    expect(localStorage.setItem).toHaveBeenCalledWith(LAST_ROUTE_STORAGE_KEY, '/health');
+  });
+
+  it('does not throw when localStorage write fails', () => {
+    const setItemSpy = vi.spyOn(Storage.prototype, 'setItem').mockImplementation(() => {
+      throw new Error('quota exceeded');
+    });
+
+    expect(() => storeLastRoute('/providers')).not.toThrow();
+    setItemSpy.mockRestore();
+  });
+});