migrada la configuracio de txt a yaml

CLAUDE.md

@@ -587,7 +587,7 @@ namespace Options {
     inline Stats stats{};           // Game statistics
 }
 
-Options::loadFromFile(path);  // Load from config.txt
+Options::loadFromFile(path);  // Load from config.yaml
 Options::saveToFile(path);    // Save on exit
 ```
 
@@ -820,7 +820,7 @@ assets:
   # SYSTEM FILES (optional, absolute paths)
   system:
     - type: DATA
-      path: ${SYSTEM_FOLDER}/config.txt
+      path: ${SYSTEM_FOLDER}/config.yaml
       required: false
       absolute: true
 ```