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/dungeon_editor_test.h

@@ -14,7 +14,7 @@ namespace test {
 
 /**
  * @brief Integration test framework using real ROM data
- * 
+ *
  * Updated for DungeonEditorV2 with card-based architecture
  */
 class DungeonEditorIntegrationTest : public ::testing::Test {