- Add pino with pino-pretty for structured logging
- Create root logger in index.ts with child loggers per module
- Support log level via PASEO_LOG env var and config.json
- Support log format (pretty/json) via PASEO_LOG_FORMAT and config.json
- Replace all console.* in runtime code with appropriate log levels
- Scripts use process.stdout/stderr for output
- Error logging uses correct pattern: logger.error({ err }, msg)
- Add client_heartbeat message type for clients to report activity
- Add shouldNotify field to attention_required events
- Track client activity (focusedAgentId, lastActivityAt) per session
- WebSocketServer checks all sessions to determine shouldNotify
- If any client is active on the agent (within 60s), shouldNotify=false
- Add onAgentAttention callback to AgentManager for clean separation