fix(gamestore): preload taskboard integration

Register gamestore.taskboard in the Game Store bootstrap so purchases and player offer checks can require the adapter without relying on data/libs being present in package.path.

Add a standalone regression test that loads gamestore/init.lua with the server-style restricted Lua search path and verifies the dependent modules initialize successfully.

Validation: all Lua contract scripts passed, including test_gamestore_bootstrap.lua (1 passed, 0 failed); StyLua check passed.

Author: dudantas

data/modules/scripts/gamestore/init.lua

@@ -17,6 +17,9 @@ local modulesToPreload = {
 	["gamestore.senders"] = function()
 		return moduleLoader("senders")
 	end,
+	["gamestore.taskboard"] = function()
+		return moduleLoader("taskboard")
+	end,
 	["gamestore.purchases"] = function()
 		return moduleLoader("purchases")
 	end,

tests/lua/test_gamestore_bootstrap.lua

@@ -0,0 +1,28 @@
+-- Standalone bootstrap contract for the Game Store module loader.
+-- Run from the repository root with: lua tests/lua/test_gamestore_bootstrap.lua
+
+CORE_DIRECTORY = "data"
+Player = {}
+
+for name in pairs(package.loaded) do
+	if name:match("^gamestore%.") then
+		package.loaded[name] = nil
+	end
+end
+for name in pairs(package.preload) do
+	if name:match("^gamestore%.") then
+		package.preload[name] = nil
+	end
+end
+
+local originalPath = package.path
+package.path = ".\\?.lua;.\\?\\init.lua"
+local loaded, reason = pcall(dofile, "data/modules/scripts/gamestore/init.lua")
+package.path = originalPath
+
+assert(loaded, reason)
+assert(type(package.preload["gamestore.taskboard"]) == "function")
+assert(type(package.loaded["gamestore.purchases"]) == "table")
+assert(type(package.loaded["gamestore.player"]) == "table")
+
+print("\n1 passed, 0 failed")