Add claude clean command to manage cache and logs

Preflight Checklist

• [x] I have searched existing requests and this feature hasn't been requested yet
• [x] This is a single feature request (not multiple features)

Problem Statement

Claude Code accumulates significant disk space over time from:

• Debug logs (can reach 3GB+)
• Old proxy databases (1GB+ per version)
• Proxy session files (171+ log files, 30MB)
• Project caches (2GB+)
• File history (50MB+)

This accumulation can cause performance issues and crashes.

Proposed Solution

Add a built-in claude clean command with two modes:

# Regular clean (safe, keeps project data)
claude clean

# Deep clean (removes project caches too)
claude clean --deep

What it should clean:

Regular clean:

• Debug logs older than N days
• Old proxy databases (keep latest version only)
• Old proxy session files (keep current session)
• File history
• Shell snapshots
• Old todos

Deep clean:

• Everything above +
• Project caches
• Command history

Alternative Solutions

Users must manually identify and delete these files, or write custom cleanup scripts.

Impact:

In my case, ~/.claude grew from 184MB to 6.5GB over a few weeks, contributing to stability issues. After cleanup: 97% reduction (6.5GB → 170MB).

Priority

Medium - Would be very helpful

Feature Category

CLI commands and flags

Use Case Example

claude clean
claude clean --deep

Additional Context

_No response_