fix: apply clang-format and exclude third-party libraries from formatting checks

- Applied clang-format to fix formatting violations in TUI and other source files
- Updated CMakeLists.txt to exclude src/lib/* from format targets to prevent third-party library violations
- Fixes clang-format violations in chat_tui.cc, tui.cc, and unified_layout.cc
- All source files now pass format-check target

🤖 Generated with Claude Code

Co-Authored-By: Claude <noreply@anthropic.com>

test/integration/editor/editor_integration_test.h

@@ -21,12 +21,14 @@ namespace test {
 /**
  * @class EditorIntegrationTest
  * @brief Base class for editor integration tests
- * 
- * This class provides common functionality for testing editors in the application.
- * It sets up the test environment and provides helper methods for ROM operations.
- * 
- * For UI interaction testing, use the ImGui test engine API directly within your test functions:
- * 
+ *
+ * This class provides common functionality for testing editors in the
+ * application. It sets up the test environment and provides helper methods for
+ * ROM operations.
+ *
+ * For UI interaction testing, use the ImGui test engine API directly within
+ * your test functions:
+ *
  * ImGuiTest* test = IM_REGISTER_TEST(engine, "test_suite", "test_name");
  * test->TestFunc = [](ImGuiTestContext* ctx) {
  *   ctx->SetRef("Window Name");

test/integration/editor/tile16_editor_test.cc

@@ -1,10 +1,11 @@
 #include "app/editor/overworld/tile16_editor.h"
 
+#include <gtest/gtest.h>
+
 #include <iostream>
 #include <memory>
 #include <vector>
 
-#include <gtest/gtest.h>
 #include "app/gfx/backend/sdl2_renderer.h"
 #include "app/gfx/core/bitmap.h"
 #include "app/gfx/render/tilemap.h"