feat(web): /search two-pane screen (debounced query, visibility filter, load more) + nav

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

web/src/shell/app-shell.test.tsx

@@ -29,8 +29,9 @@ test("shows active and disabled nav and renders the outlet", async () => {
   renderApp(tree(), { route: "/objects" });
   expect(await screen.findByText("objects outlet")).toBeInTheDocument();
   expect(screen.getByRole("link", { name: /objects/i })).toBeInTheDocument();
-  // later milestones are present but disabled
-  expect(screen.getByRole("button", { name: /search/i })).toBeDisabled();
+  // fields is still disabled; search is now a link
+  expect(screen.getByRole("link", { name: /search/i })).toBeInTheDocument();
+  expect(screen.getByRole("button", { name: /fields/i })).toBeDisabled();
 });
 
 test("language switch toggles to Swedish", async () => {

web/src/shell/app-shell.tsx

@@ -5,7 +5,7 @@ import { useLogout } from "../api/queries";
 import { Button } from "@/components/ui/button";
 import { LangSwitch } from "./lang-switch";
 
-const DISABLED_NAV = ["fields", "search"] as const;
+const DISABLED_NAV = ["fields"] as const;
 
 export function AppShell() {
   const { t } = useTranslation();
@@ -46,6 +46,14 @@ export function AppShell() {
           >
             {t("nav.authorities")}
           </NavLink>
+          <NavLink
+            to="/search"
+            className={({ isActive }) =>
+              `block rounded px-2 py-1 ${isActive ? "bg-neutral-200 font-medium" : ""}`
+            }
+          >
+            {t("nav.search")}
+          </NavLink>
           {DISABLED_NAV.map((key) => (
             <button
               key={key}