Add --yolo as an alias for --dangerously-skip-permissions

Feature Request

Add --yolo as a shorthand alias for --dangerously-skip-permissions.

Motivation

--dangerously-skip-permissions is 30 characters long. While the verbose name serves as a good warning for first-time users, frequent users who understand the risks would benefit from a shorter alias.

Typing claude --yolo is much more ergonomic than claude --dangerously-skip-permissions — especially when you're doing it multiple times a day.

Proposed behavior

# These would be equivalent:
claude --dangerously-skip-permissions
claude --yolo

--yolo would behave identically to --dangerously-skip-permissions in every way — same warnings, same behavior, same logging.

Alternatives considered

• Shell aliases work but aren't portable across machines or shareable with teams
• --skip-permissions was considered but loses the "you should think twice" energy that --yolo preserves honestly

<img width="559" height="447" alt="Image" src="https://github.com/user-attachments/assets/08ec0aea-ea68-46bd-aa78-bb64c029618d" />