big bug squash (#261)

src/ui/FlyMenu.lua

@@ -11,9 +11,13 @@ function FlyMenu.new(game)
   local visited = game.save.visited or {}
   local seen = {}
   for _, mapId in ipairs(game.data.field.flyOrder or {}) do
-    -- towns only (dungeon escape spots share the table), each listed once
+    -- towns only (dungeon escape spots share the table), each listed once.
+    -- Indigo Plateau (tileset PLATEAU) is a valid Fly destination too, so allow
+    -- it past the OVERWORLD-only isOutdoor gate while the CAVERN/FACILITY escape
+    -- spots stay excluded (LoadTownMap_Fly cycles it like any town, #203).
     local def = game.data.maps[mapId]
-    if visited[mapId] and def and Map.isOutdoor(def) and not seen[mapId] then
+    if visited[mapId] and def and not seen[mapId]
+       and (Map.isOutdoor(def) or def.tileset == "PLATEAU") then
       seen[mapId] = true
       table.insert(items, {
         value = mapId,