fix(ui,i18n): E30 review round 2 — honest bio failure, a full show summary, one HU name per thing

- Person page: a bio ask that fails says so with a retry instead of reading as 'no biography'.
- Show page: the summary is a ClampedText (5 lines + More), like the person and collection pages;
  one More/Less pair (plex.textMore/textLess) for all three.
- Channels: a re-slotted row is placed in the language the server orders by (the stored
  preference, else English), not the UI's guess.
- A skipped run's body is only the reason (its title already says skipped).
- HU: Behúzási kvótatartalék; Eseménynapló ürítve / az eseménynaplót; indok; közvetlenül
  játszható / közvetlen közvetítés in the Plex hints.
- Tests: ClampedText re-measures on a resize, the show summary clamp, serverOrderLang.

frontend/src/components/PlexPersonView.dom.test.tsx

@@ -7,7 +7,7 @@
 // and the api is mocked so the query resolves synchronously in the test.
 import { setLanguage } from "../i18n";
 import { describe, it, expect, afterEach, beforeAll, vi } from "vitest";
-import { act, render, screen, fireEvent, cleanup } from "@testing-library/react";
+import { act, render, screen, fireEvent, cleanup, within } from "@testing-library/react";
 import { QueryClient, QueryClientProvider } from "@tanstack/react-query";
 
 beforeAll(() => {
@@ -251,7 +251,7 @@ describe("PlexPersonView — a bio on its way (E30 S6)", () => {
     }
   });
 
-  it("stops asking when the page's own request fails", async () => {
+  it("stops asking when the page's own request fails, and says so with a retry", async () => {
     vi.useFakeTimers({ shouldAdvanceTime: true });
     try {
       plexPerson.mockReset();
@@ -265,6 +265,12 @@ describe("PlexPersonView — a bio on its way (E30 S6)", () => {
       await act(() => vi.advanceTimersByTimeAsync(10_000));
       expect(plexPerson).toHaveBeenCalledTimes(2); // not every 1.5 s for as long as it fails
       expect(screen.queryByRole("status")).toBeNull();
+      // Not a blank that reads as "no biography": the failure is said, and a retry asks again.
+      const alert = screen.getByRole("alert");
+      expect(alert.textContent).toContain("plex.person.bioFailed");
+      plexPerson.mockResolvedValue(person({ biography: "Landed bio." }));
+      fireEvent.click(within(alert).getByRole("button"));
+      await screen.findByText("Landed bio.");
     } finally {
       vi.useRealTimers();
     }
@@ -277,8 +283,8 @@ describe("PlexPersonView — a bio on its way (E30 S6)", () => {
       plexPerson.mockReset();
       plexPerson.mockResolvedValue(person({ biography: "A long life.\n\nMany films." }));
       wrap(view);
-      fireEvent.click(await screen.findByText("plex.person.more"));
-      expect(screen.getByText("plex.person.less").getAttribute("aria-expanded")).toBe("true");
+      fireEvent.click(await screen.findByText("plex.textMore"));
+      expect(screen.getByText("plex.textLess").getAttribute("aria-expanded")).toBe("true");
     } finally {
       tall.mockRestore();
       box.mockRestore();
@@ -287,7 +293,7 @@ describe("PlexPersonView — a bio on its way (E30 S6)", () => {
     plexPerson.mockResolvedValue(person({ biography: "Short." }));
     wrap(view);
     await screen.findByText("Short.");
-    expect(screen.queryByText("plex.person.more")).toBeNull(); // jsdom: nothing is cut
+    expect(screen.queryByText("plex.textMore")).toBeNull(); // jsdom: nothing is cut
   });
 });