feat(design): one media card, and Home's hero and shelves as cards (E28 S3h)

- ui/MediaCard + mediaCardStyles: one frame for every video, Plex title and
  Home tile; the meta line pinned to the bottom edge, the length a badge on
  the picture, the media Play only where the click plays, the hover row at
  the picture's bottom-right (the owner's pick C).
- Shelf density: on any strip a one-line title over one meta line; mixed
  Home shelves are landscape; rails turn content-visibility off (a card's
  reserved height had become the strip's). Home slot 232px, so the Play
  and the hover row no longer touch; a landscape shelf takes the small Play.
- Home hero is a card (hover row, the whole menu, a touch "…"), three
  quarters wide and centred; channel / playlist tiles get Play, open and
  "…"; a show tile acts on its next episode, ⓘ opens the show.
- Plex preview: a ~0.9 s mouse rest opens a passive panel with the whole
  title, facts and synopsis (popover `pointerOnly`); the synopsis and title
  tooltips are gone.
- Compact list row B: the title leads, "…" at the end, toggles over the
  date on hover.
- Media-info layout B (collections, crew, cast beside the facts sidebar;
  an empty column is not drawn); filtering values are chips there and on
  the show page; "Cast" over the cast-only strips.
- Browse tiles hover like a card; prose capped by the `measure` utility.

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

@@ -39,7 +39,8 @@
     "moveRight": "Right",
     "moveLast": "To the end",
     "moveFailed": "Could not reorder the shelf.",
-    "moveSaving": "Saving the new order…"
+    "moveSaving": "Saving the new order…",
+    "openPlaylist": "Open the playlist"
   },
   "pin": {
     "menu": "Comfort shelf",

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

@@ -125,6 +125,9 @@
   "menu": "Media",
   "markWatched": "Mark watched",
   "markUnwatched": "Mark unwatched",
+  "markNextWatched": "Mark S{{season}}·E{{episode}} watched",
+  "markNextUnwatched": "Mark S{{season}}·E{{episode}} unwatched",
+  "nextUp": "Next: S{{season}}·E{{episode}}",
   "watchedFailed": "Couldn't update the watched state — please try again.",
   "seasons": "{{count}} seasons",
   "unified": {
@@ -243,7 +246,7 @@
     "title": "Media info",
     "customize": "Customize view",
     "prefArtBg": "Faint backdrop",
-    "prefCast": "Cast & crew",
+    "prefCast": "Cast",
     "prefRelated": "Related shows",
     "prefFacts": "Details",
     "prefKeywords": "Keywords",
@@ -258,7 +261,7 @@
     },
     "openImdb": "Open on IMDb",
     "director": "Director",
-    "cast": "Cast & crew",
+    "cast": "Cast",
     "markWatched": "Mark watched",
     "markUnwatched": "Mark unwatched",
     "clearResume": "Clear resume position",

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

@@ -39,7 +39,8 @@
     "moveRight": "Jobbra",
     "moveLast": "A polc végére",
     "moveFailed": "Nem sikerült átrendezni a polcot.",
-    "moveSaving": "Az új sorrend mentése…"
+    "moveSaving": "Az új sorrend mentése…",
+    "openPlaylist": "Lejátszási lista megnyitása"
   },
   "pin": {
     "menu": "Komfort polc",

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

@@ -125,6 +125,9 @@
   "menu": "Média",
   "markWatched": "Megnézettnek jelöl",
   "markUnwatched": "Nem-nézettnek jelöl",
+  "markNextWatched": "S{{season}}·E{{episode}} megnézettnek jelöl",
+  "markNextUnwatched": "S{{season}}·E{{episode}} nem-nézettnek jelöl",
+  "nextUp": "Következik: S{{season}}·E{{episode}}",
   "watchedFailed": "Nem sikerült frissíteni a megnézett állapotot — próbáld újra.",
   "seasons": "{{count}} évad",
   "unified": {
@@ -258,7 +261,7 @@
     },
     "openImdb": "Megnyitás az IMDb-n",
     "director": "Rendező",
-    "cast": "Szereplők & stáb",
+    "cast": "Szereplők",
     "markWatched": "Megjelölés megnézettként",
     "markUnwatched": "Megnézett visszavonása",
     "clearResume": "Folytatási pozíció törlése",