Feature request: one-shot command to wipe all conversation history

Feature Request: Add a command to delete all conversation history at once
Description:
Currently, Claude Code does not provide a built-in command to clear all past conversation history in one step. Users must manually remove files from ~/.config/claude-code/sessions/, which is inconvenient and error-prone.
Requested Feature:
Please add a command such as /clear-all or --wipe-history that:
deletes all local session files
optionally prompts for confirmation
does not affect CLAUDE.md or project memory
Use Case:
I often switch between projects and want to ensure no previous context or sensitive data persists across sessions. A single command to wipe all history would improve both privacy and UX.