v4: the header drops the username link — on wide screens it stood beside the avatar, which leads to the same profile, so only Playlists stays there. The avatar's menu still opens with @username first. 670 frontend tests pass, and tsc, eslint, deno fmt and i18n:compile --strict are clean; checked in a screenshot in Smooth dark at 1400px.

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>

src/test/components/layout/AppHeader.test.tsx

@@ -24,10 +24,12 @@ describe("AppHeader", () => {
     renderWithContexts(<AppHeader disableNew />, {
       session: makeSession({ username: "ann" }),
     });
-    expect(screen.getByRole("link", { name: "ann" })).toHaveAttribute(
+    expect(screen.getByRole("link", { name: "Playlists" })).toHaveAttribute(
       "href",
-      "/@ann",
+      "/@ann/playlists",
     );
+    expect(screen.getByRole("button", { name: "User menu" }))
+      .toBeInTheDocument();
     expect(screen.getByRole("button", { name: "Chat" })).toBeInTheDocument();
     expect(screen.getByRole("button", { name: "Notifications" }))
       .toBeInTheDocument();