Fix admin permissions bounce, prefixes APIs, and Italian UI leftovers.

Gate permissions on ACL manage + resolve super-admin from live user ranks, restore prefixes API routes, and anglicize hardcoded admin copy with nav i18n.

Co-authored-by: Cursor <[email protected]>

src/actions/prefixes.ts

@@ -116,10 +116,14 @@ const SETTINGS_WHITELIST = new Set([
 	"enabled",
 	"max_length",
 	"min_rank",
+	"min_rank_to_buy",
 	"allow_colors",
 	"allow_bold",
 	"allow_italic",
 	"default_color",
+	"price_credits",
+	"price_points",
+	"points_type",
 ]);
 
 const updatePrefixSettingsSchema = z.object({