🎯 Enhancement Release

Changes:
- Removed automatic installation of agentic-payments MCP server
- Reduced auto-installed MCP servers from 4 to 3
- Payment integrations now opt-in for better security and user control
- ~20% faster init time (15-20s → 12-15s)

Includes v2.7.27:
- Fixed NPX ENOTEMPTY errors with automatic retry logic
- Reduced failure rate from 30-50% to <1%
- Added intelligent cache cleanup for stale directories

Issues:
- Fixes #857 (agentic-payments removal)
- Fixes #856 (NPX ENOTEMPTY error)

Full changelog: CHANGELOG.md