v2.2.0

Added

• MCP UI Integration — Support for the MCP UI standard. Tools with _meta.ui.resourceUri open interactive UIs with bidirectional messaging, tool consent, and keyboard shortcuts.
• Session reuse — Calling the same tool while its UI is open pushes results to the existing window instead of replacing it.
• Glimpse integration — Native macOS WKWebView window via Glimpse (pi install npm:glimpseui), browser fallback elsewhere. Override with MCP_UI_VIEWER env var.
• Logger module, error types, 178 tests
• Interactive visualizer example — Minimal MCP server demonstrating Chart.js, bidirectional messaging, and streaming.

Fixed

• Host-iframe timing: bridge connects before iframe loads, fixing ui/initialize timeout
• Internal log noise eliminated (log.info → log.debug)