feat: Add dungeon editor smoke test and register it in the test suite

- Introduced a new smoke test for the Dungeon Editor to verify UI elements and functionality.
- Registered the Dungeon Editor smoke test in the main test suite for automated execution.
- Updated the integration test setup to ensure proper ROM loading from multiple locations.

test/e2e/dungeon_editor_smoke_test.cc

@@ -0,0 +1,47 @@
+#include "e2e/dungeon_editor_smoke_test.h"
+#include "test_utils.h"
+#include "app/core/controller.h"
+#include "imgui_test_engine/imgui_te_context.h"
+
+// Simple smoke test for dungeon editor
+// Verifies that the editor opens and basic UI elements are present
+void E2ETest_DungeonEditorSmokeTest(ImGuiTestContext* ctx)
+{
+    // Load ROM first
+    yaze::test::gui::LoadRomInTest(ctx, "zelda3.sfc");
+    
+    // Open the Dungeon Editor
+    yaze::test::gui::OpenEditorInTest(ctx, "Dungeon Editor");
+    
+    // Focus on the dungeon editor window
+    ctx->WindowFocus("Dungeon Editor");
+    
+    // Log that we opened the editor
+    ctx->LogInfo("Dungeon Editor window opened successfully");
+    
+    // Verify the 3-column layout exists
+    // Check for Room Selector on the left
+    ctx->SetRef("Dungeon Editor");
+    
+    // Check basic tabs exist
+    ctx->ItemClick("Rooms##TabItemButton");
+    ctx->LogInfo("Room selector tab clicked");
+    
+    // Check that we can see room list
+    // Room 0 should exist in any valid zelda3.sfc
+    ctx->ItemClick("Room 0x00");
+    ctx->LogInfo("Selected room 0x00");
+    
+    // Verify canvas is present (center column)
+    // The canvas should be focusable
+    ctx->ItemClick("##Canvas");
+    ctx->LogInfo("Canvas clicked");
+    
+    // Check Object Selector tab on right
+    ctx->ItemClick("Object Selector##TabItemButton");
+    ctx->LogInfo("Object selector tab clicked");
+    
+    // Log success
+    ctx->LogInfo("Dungeon Editor smoke test completed successfully");
+}
+

test/e2e/dungeon_editor_smoke_test.h

@@ -0,0 +1,9 @@
+#ifndef YAZE_TEST_E2E_DUNGEON_EDITOR_SMOKE_TEST_H
+#define YAZE_TEST_E2E_DUNGEON_EDITOR_SMOKE_TEST_H
+
+#include "imgui_test_engine/imgui_te_context.h"
+
+void E2ETest_DungeonEditorSmokeTest(ImGuiTestContext* ctx);
+
+#endif  // YAZE_TEST_E2E_DUNGEON_EDITOR_SMOKE_TEST_H
+