perf(admin): full-stack performance optimization for all list tables

- Implemented server-side search, infinite scrolling, and list virtualization for Tenants, Users, and Audit Logs.
- Backend: Enhanced Repository, Service, and Handler layers to support 'search' and 'cursor' parameters.
- Frontend: Integrated @tanstack/react-virtual and useInfiniteQuery for high-performance rendering.
- Quality: Updated all unit tests and E2E tests to match the new asynchronous server-side search architecture.
- i18n: Synced all translation keys and cleaned up unused resources.

adminfront/src/features/users/UserListPage.render.test.tsx

@@ -185,7 +185,7 @@ describe("UserListPage search rendering", () => {
     fireEvent.change(searchInput, { target: { value: "user 19" } });
     fireEvent.keyDown(searchInput, { key: "Enter" });
 
-    expect(screen.getByText("User 19")).toBeInTheDocument();
+    expect(await screen.findByText("User 19")).toBeInTheDocument();
     expect(screen.queryByText("User 0")).not.toBeInTheDocument();
     expect(performance.now() - startedAt).toBeLessThan(searchRenderBudgetMs);
   });