v2.0.0 - SQLite Persistence & Security Hardening

Claude IPC MCP v2.0.0 - SQLite Persistence & Security Hardening

🎯 Summary

This major release adds SQLite persistence for message durability and implements comprehensive security hardening
based on professional security audit.

✨ New Features

• SQLite Persistence: Messages now survive server restarts
• UV Package Manager: Primary installation method for better dependency management
• Comprehensive Security: All critical vulnerabilities fixed

🔒 Security Fixes (All Verified by Security Audit)

• ✅ Database moved from /tmp to ~/.claude-ipc-data with 0600 permissions
• ✅ Session tokens now hashed with SHA-256
• ✅ 24-hour token expiration implemented
• ✅ Rate limiting added (100 requests/minute)
• ✅ Path traversal vulnerabilities fixed

📚 Documentation

• New comprehensive troubleshooting guide
• Updated setup instructions for UV
• Migration guide for v1.x users
• Roadmap for future development

💔 Breaking Changes

• Database location changed (automatic migration on first run)
• UV is now the recommended installation method
• All instances must restart to use v2.0.0

🧪 Testing

• Multi-agent communication verified
• Security fixes validated with automated tests
• UV installation tested on clean systems

📦 Migration Guide

For v1.x users:

1. Update using UV: uv pip install claude-ipc-mcp
2. Old messages in /tmp/ipc-messages.db can be manually migrated if needed
3. First run will create new secure database automatically

Released: July 10, 2025