Add dev spells list and implement CurseItem; expose Lua globals for callbacks

- Remove commented TestSpell from Necromancy, add new Dev category with TestSpell and CurseItem
- Implement cursing logic using setCursed/setCursedKnown and user feedback/effects
- Expose LuaEngine.getGlobals() and switch GameLoop to use it for ItemSelectionCallbacks lookup to avoid getfenv dependence

Author: qwencoder

RemixedDungeon/src/main/assets/scripts/spells/CurseItem.lua

@@ -32,7 +32,9 @@ return spell.init{
                     RPD.glog("That item is already cursed!")
                 else
                     -- Curse the selected item
-                    item:curse()
+                    item:setCursed(true);
+                    item:setCursedKnown(true);
+
                     RPD.glog("You have cursed your " .. item:name() .. "!")
 
                     -- Apply a visual effect

RemixedDungeon/src/main/assets/scripts/spells/CustomSpellsList.lua

@@ -5,7 +5,7 @@
 ---
 
 local spells = {}
-spells["Necromancy"] = {"RaiseDead","Exhumation", "DarkSacrifice","Possess",--[["TestSpell"]]}
+spells["Necromancy"] = {"RaiseDead","Exhumation", "DarkSacrifice","Possess"}
 spells["Common"] = {"TownPortal","Heal","RaiseDead","Cloak","Calm","Charm"}
 
 spells["Combat"] = {"DieHard","Dash","BodyArmor","Smash"}
@@ -15,4 +15,7 @@ spells["Huntress"] = {"Calm","Charm","ShootInEye","SummonBeast"}
 spells["Elf"] = {"MagicArrow","Sprout","HideInGrass","NatureArmor"}
 spells["Priest"] = {"Heal","Calm","Charm","Order"}
 spells["PlagueDoctor"] = {"Heal","Calm","Charm","Order"}
+
+spells["Dev"] = {"TestSpell", "CurseItem"}
+
 return spells

RemixedDungeon/src/main/java/com/nyrds/lua/LuaEngine.java

@@ -163,6 +163,10 @@ static public void runScriptFile(@NotNull String fileName) {
 		getEngine().globals.loadfile(fileName).call();
 	}
 
+	static public Globals getGlobals() {
+		return getEngine().globals;
+	}
+
 	@Override
 	public InputStream findResource(String filename) {
 		return new BOMInputStream(ModdingMode.getInputStream(filename));

RemixedDungeon/src/main/java/com/nyrds/pixeldungeon/game/GameLoop.java

@@ -292,7 +292,7 @@ public static void setDifficulty(int difficulty) {
     @LuaInterface
     public static void callByGlobalId(int callbackId, Object... params) {
         // Get the global callbacks table from Lua
-        LuaValue callbacks = LuaEngine.call("getfenv").get("ItemSelectionCallbacks");
+        LuaValue callbacks = LuaEngine.getGlobals().get("ItemSelectionCallbacks");
 
         // If the callbacks table exists and has the callback ID
         if (callbacks != null && callbacks.istable()) {