fix(plex): seek tooltip tracks cursor under scale; tidy the tuning menu

- The seek-bar hover tooltip positioned itself with a px `left` derived
  from the scaled getBoundingClientRect, so inside the transform:scale
  player it got re-scaled and drifted right of the cursor (only 0 was
  right). Position it by fraction (% of the bar) instead — it now sits
  under the cursor at any point, like the volume tooltip already did.
- The tuning (gear) menu tabs wrapped to two lines at the +25% scale.
  Widen the menu, keep tab labels on one line (whitespace-nowrap), and
  shorten the labels: "Sync offset" → "Offsets", "Subtitle style" →
  "Subtitles" (all three languages).

frontend/src/components/PlexPlayer.tsx

@@ -860,8 +860,11 @@ export default function PlexPlayer({ itemId, onClose, queue }: Props) {
     // eslint-disable-next-line react-hooks/exhaustive-deps
   }, [activeMarker?.type, activeMarker?.start_s, prefs.autoSkipIntro, prefs.autoSkipCredits, prefs.autoSkipDelay, doSkip]);
 
-  // Seekbar hover: a timestamp tooltip that follows the cursor.
+  // Seekbar hover: a timestamp tooltip that follows the cursor. Store the position as a FRACTION
-  const [hover, setHover] = useState<{ x: number; t: number } | null>(null);
+  // (0..1), not pixels: the bar sits inside the transform:scale(1.25) subtree, so a px `left` would be
+  // re-scaled and drift right of the cursor (only 0 stayed correct). A % `left` is relative to the
+  // bar's own width and scales cleanly.
+  const [hover, setHover] = useState<{ frac: number; t: number } | null>(null);
   // Seekbar scrubbing: the absolute time under the dragging finger. While non-null the head/thumb
   // preview this position; the real seek fires once on release (avoids restarting the session on
   // every out-of-buffer step of the drag). A plain click is a down+up at one spot → seeks there.
@@ -1037,9 +1040,9 @@ export default function PlexPlayer({ itemId, onClose, queue }: Props) {
           }}
           onPointerMove={(e) => {
             const r = (e.currentTarget as HTMLElement).getBoundingClientRect();
-            const x = Math.max(0, Math.min(e.clientX - r.left, r.width));
+            const frac = Math.max(0, Math.min((e.clientX - r.left) / r.width, 1));
-            const tt = (x / r.width) * duration;
+            const tt = frac * duration;
-            setHover({ x, t: tt });
+            setHover({ frac, t: tt });
             if (e.buttons & 1) setScrub(tt); // dragging with the primary button held
           }}
           onPointerUp={() => {
@@ -1054,7 +1057,7 @@ export default function PlexPlayer({ itemId, onClose, queue }: Props) {
           {hover && duration > 0 && (
             <div
               className="pointer-events-none absolute bottom-full mb-2 -translate-x-1/2 rounded bg-black/90 px-1.5 py-0.5 text-[11px] tabular-nums text-white"
-              style={{ left: `${hover.x}px` }}
+              style={{ left: `${hover.frac * 100}%` }}
             >
               {fmt(hover.t)}
             </div>
@@ -1236,14 +1239,14 @@ export default function PlexPlayer({ itemId, onClose, queue }: Props) {
                     ref={menuRef}
                     onWheel={(e) => e.stopPropagation()}
                     onClick={(e) => e.stopPropagation()}
-                    className="glass-menu absolute bottom-full right-0 mb-2 w-72 rounded-xl p-2 text-sm text-white shadow-2xl"
+                    className="glass-menu absolute bottom-full right-0 mb-2 w-80 rounded-xl p-2 text-sm text-white shadow-2xl"
                   >
                     <div className="mb-1.5 flex gap-1">
                       {settingsTabs.map((tab) => (
                         <button
                           key={tab.key}
                           onClick={() => setSettingsTab(tab.key)}
-                          className={`flex-1 rounded px-2 py-1 text-[11px] ${
+                          className={`flex-1 whitespace-nowrap rounded px-2 py-1 text-[11px] ${
                             activeTab === tab.key ? "bg-white/15 text-accent" : "text-white/70 hover:bg-white/10"
                           }`}
                         >

frontend/src/i18n/locales/de/plex.json

@@ -126,14 +126,14 @@
       "fineSeek": "Feines Springen"
     },
     "settings": "Einstellungen",
-    "sync": "Synchronität",
+    "sync": "Offsets",
     "subOffset": "Untertitel-Verzögerung",
     "audioOffset": "Audio-Verzögerung",
     "playback": "Wiedergabe",
     "seekStep": "Sprungweite",
     "fineSeek": "Feines Springen (Strg)",
     "autoHide": "Steuerung ausblenden",
-    "subStyle": "Untertitel-Stil",
+    "subStyle": "Untertitel",
     "subSize": "Schriftgröße",
     "subPos": "Position",
     "subColor": "Textfarbe",

frontend/src/i18n/locales/en/plex.json

@@ -126,14 +126,14 @@
       "fineSeek": "Fine seek"
     },
     "settings": "Settings",
-    "sync": "Sync offset",
+    "sync": "Offsets",
     "subOffset": "Subtitle delay",
     "audioOffset": "Audio delay",
     "playback": "Playback",
     "seekStep": "Seek step",
     "fineSeek": "Fine seek (Ctrl)",
     "autoHide": "Auto-hide controls",
-    "subStyle": "Subtitle style",
+    "subStyle": "Subtitles",
     "subSize": "Text size",
     "subPos": "Position",
     "subColor": "Text color",

frontend/src/i18n/locales/hu/plex.json

@@ -126,14 +126,14 @@
       "fineSeek": "Finom léptetés"
     },
     "settings": "Beállítások",
-    "sync": "Szinkron-eltolás",
+    "sync": "Eltolások",
     "subOffset": "Felirat-eltolás",
     "audioOffset": "Hang-eltolás",
     "playback": "Lejátszás",
     "seekStep": "Léptetés",
     "fineSeek": "Finom léptetés (Ctrl)",
     "autoHide": "Vezérlők elrejtése",
-    "subStyle": "Felirat stílusa",
+    "subStyle": "Feliratok",
     "subSize": "Szövegméret",
     "subPos": "Pozíció",
     "subColor": "Szövegszín",