feat: rare values panel + fortune wheel UI + prize editor

Toolbar buttons, FortuneWheelView (animated wheel, prize icons, recent winners),
RareValuesView (diamond price guide + staff prize-editor tab), furni infostand
value line, useFortuneWheel/useRareValues hooks, it/en text examples.

public/configuration/rarevalues-texts-en.example

@@ -0,0 +1,6 @@
+{
+    "rarevalues.title": "Rare Values",
+    "rarevalues.loading": "Loading values…",
+    "rarevalues.empty": "No rares found",
+    "rarevalues.infostand.label": "Value:"
+}

public/configuration/rarevalues-texts-it.example

@@ -0,0 +1,6 @@
+{
+    "rarevalues.title": "Valore Rari",
+    "rarevalues.loading": "Caricamento valori…",
+    "rarevalues.empty": "Nessun raro trovato",
+    "rarevalues.infostand.label": "Valore:"
+}

public/configuration/wheel-texts-en.example

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+{
+    "wheel.title": "Fortune Wheel",
+    "wheel.free.today": "You have %count% free spins today!",
+    "wheel.extra": "Extra spins: %count%",
+    "wheel.spin": "SPIN",
+    "wheel.buy": "Buy spin",
+    "wheel.winners": "Latest winners",
+    "wheel.winners.empty": "No winners yet"
+}

public/configuration/wheel-texts-it.example

@@ -0,0 +1,9 @@
+{
+    "wheel.title": "Ruota della Fortuna",
+    "wheel.free.today": "Hai %count% giri gratis oggi!",
+    "wheel.extra": "Giri extra: %count%",
+    "wheel.spin": "GIRA",
+    "wheel.buy": "Compra giro",
+    "wheel.winners": "Ultimi vincitori",
+    "wheel.winners.empty": "Ancora nessun vincitore"
+}