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/e2e/dungeon_editor_smoke_test.h

@@ -5,7 +5,7 @@
 
 /**
  * @brief Quick smoke test for DungeonEditorV2 card-based UI
- * 
+ *
  * Tests basic functionality:
  * - Opening dungeon editor
  * - Opening independent cards (Rooms, Matrix, Objects, etc.)