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/ui/ClampedText.tsx

@@ -2,7 +2,7 @@ import { useLayoutEffect, useRef, useState } from "react";
 import { Button } from "./Button";
 
 // Static class names, so Tailwind sees them.
-const CLAMP = { 3: "line-clamp-3", 8: "line-clamp-8" } as const;
+const CLAMP = { 3: "line-clamp-3", 5: "line-clamp-5", 8: "line-clamp-8" } as const;
 
 /** A long text (a biography, a summary) clamped to a few lines, with a More / Less toggle offered only
  *  when the text is actually cut — measured, so a short text carries no dead button. Re-measured on a