Add YAPF style + ignore, and format tracked Python files

rich_display.py

@@ -15,7 +15,6 @@ from typing import Any, Iterator, TextIO
 
 from rich.console import Console
 
-
 # Configure Rich pretty-printing to avoid truncating long strings (hashes/paths).
 # This is version-safe: older Rich versions may not support the max_* arguments.
 try:
@@ -28,7 +27,6 @@ try:
 except Exception:
     pass
 
-
 _STDOUT_CONSOLE = Console(file=sys.stdout)
 _STDERR_CONSOLE = Console(file=sys.stderr)