RLE stage compresses UUIDs that should be preserved

[quetarbir]

The RLE stage is shortening UUIDs in log output:

# Before: request_id=550e8400-e29b-41d4-a716-446655440000
# After:  request_id=550e8400-...-446655440000

These UUIDs are often needed for log correlation. Could RLE have an option to exclude UUID-like patterns from compression?