Allow toggling permissions mid-session without restart

Feature Request

Current behavior: To enable --dangerously-skip-permissions (YOLO mode), you must restart Claude Code with the flag. This loses all conversation context.

Requested behavior: Allow enabling/disabling blanket permissions mid-session via a slash command like /dangerously-skip-permissions or /yolo.

Why this matters:

• Restarting loses valuable context built up during a session
• Users may start a session not knowing they'll need YOLO mode
• Breaks workflow to have to restart and re-explain context
• The permission toggle is a user preference, not a security boundary that requires a fresh session

Proposed solution:
Add a slash command that toggles the same behavior as --dangerously-skip-permissions without requiring a restart.

Use case example:

1. Start a session normally
2. Build up context over 30+ minutes of work
3. Realize you need to run many similar commands without approval prompts
4. Currently: Must restart and lose all context
5. Desired: Run /yolo and continue with blanket permissions

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Submitted via Claude Code