feat(game-loop): implement strict phase rules, exploration stops, and hero attacks

src/view/GameRenderer.js

@@ -77,8 +77,9 @@ export class GameRenderer {
                 const doorIntersects = this.raycaster.intersectObjects(this.exitGroup.children, false);
                 if (doorIntersects.length > 0) {
                     const doorMesh = doorIntersects[0].object;
-                    if (doorMesh.userData.isDoor) {
-                        // Clicked on a door! Call onClick with a special door object
+                    // Only capture click if it is a door AND it is NOT open
+                    if (doorMesh.userData.isDoor && !doorMesh.userData.isOpen) {
+                        // Clicked on a CLOSED door! Call onClick with a special door object
                         onClick(null, null, doorMesh);
                         return;
                     }