Refactor scenarios: Remove deprecated XML files and update JSON scenarios with starting inventory items. Adjust room creation logic to prevent sprite creation for starting inventory items. Update scenario select paths for consistency.

.github/copilot-instructions.md

@@ -62,7 +62,8 @@ Mini-games handle modal display, pause/resume, and return callbacks automaticall
 ### Inventory System
 - Items stored as objects with `id`, `name`, `texture` properties
 - Item identifiers created via `createItemIdentifier()` for UI display
-- Special handling: "inInventory" flag in scenario JSON auto-adds items on load
+- Starting items defined in `startItemsInInventory` array at scenario root level
+- Starting items automatically added to inventory on game initialization
 
 ### Scenario JSON Structure
 ```json
@@ -70,6 +71,14 @@ Mini-games handle modal display, pause/resume, and return callbacks automaticall
   "scenario_brief": "Mission description",
   "endGoal": "What player must accomplish",
   "startRoom": "room_id",
+  "startItemsInInventory": [
+    {
+      "type": "object_type",
+      "name": "Display name",
+      "takeable": true,
+      "observations": "Item description"
+    }
+  ],
   "rooms": {
     "room_id": {
       "type": "room_type",