feat(e24): reach the Home surface — the landing toggle, a palette command, Shift+W

S4's reachability half. Home already led the nav order; what was missing was every
way IN other than the rail.

- Settings → Appearance → Startup: "Start on Home", the documented escape hatch for
  the landing override. Deliberately still localStorage and not a server pref —
  `loadInitialPage` answers before /api/me lands, and a landing module decided after
  the first paint is a visible jump. Its two stored values are now ONE exported
  constant, so the writer and the boot-time reader cannot drift on a magic string.
- The command palette gets "Meglepetés" / "Surprise me": it navigates to Home and
  rerolls the hero on arrival. No second "Mit nézzek?" row beside it — the Home
  module row already matches that phrase through its descriptive title.
- A global Shift+W jumps to Home. A chord, not a bare `w`: the Plex player binds bare
  letters and `w` sits on `s`, so a blind reach for the subtitle key would have thrown
  a viewer out of the film.

The palette's request crosses a lazy module boundary, so it is a token that waits
(lib/homeIntent) rather than an event fired into an empty room. Browser-measured:
taken with a compare-and-clear, because StrictMode's double-invoked mount effect
otherwise rerolled twice and landed on the page two picks deep.

HU/EN parity kept; UAT on localdev in both languages, including the empty shelf.

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

@@ -15,6 +15,7 @@
   "audio": "Cycle audio track",
   "subtitle": "Cycle subtitle",
   "help": "Show this help",
+  "home": "Go to Home (what should I watch?)",
   "info": "Media info",
   "stats": "Stats for nerds",
   "back": "Stop & back to feed",

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

@@ -11,5 +11,8 @@
     "playlists": "Playlists",
     "views": "Saved views",
     "actions": "Actions"
+  },
+  "actions": {
+    "surprise": "Surprise me"
   }
 }

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

@@ -34,6 +34,9 @@
     "showHintsHint": "These little hover explanations. Turn them off once you know your way around.",
     "showTuner": "Show the glass tuner",
     "showTunerHint": "A floating panel for live-tweaking the frosted-glass look. A geek toy — off by default.",
+    "startup": "Startup",
+    "startOnHome": "Start on Home",
+    "startOnHomeHint": "Every launch opens “What should I watch?”. Off = pick up on the module you left open.",
     "textSize": "Text size"
   },
   "notifications": {

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

@@ -15,6 +15,7 @@
   "audio": "Hangsáv váltása",
   "subtitle": "Felirat váltása",
   "help": "Súgó megjelenítése",
+  "home": "Ugrás a kezdőlapra (mit nézzek?)",
   "info": "Média infó",
   "stats": "Statisztika (nerdöknek)",
   "back": "Leállítás és vissza a feedre",

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

@@ -11,5 +11,8 @@
     "playlists": "Listák",
     "views": "Mentett nézetek",
     "actions": "Műveletek"
+  },
+  "actions": {
+    "surprise": "Meglepetés"
   }
 }

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

@@ -34,6 +34,9 @@
     "showHintsHint": "Ezek a kis lebegő magyarázatok. Kapcsold ki őket, ha már kiismerted magad.",
     "showTuner": "Glass tuner megjelenítése",
     "showTunerHint": "Lebegő panel a mattüveg-hatás élő hangolásához. Geek-játékszer — alapból kikapcsolva.",
+    "startup": "Indulás",
+    "startOnHome": "Indítás a kezdőlapon",
+    "startOnHomeHint": "Minden induláskor a „Mit nézzek most?” oldal nyílik meg. Kikapcsolva ott folytatod, ahol abbahagytad.",
     "textSize": "Betűméret"
   },
   "notifications": {