Orchestrate and manage multiple watchers for Silver tier: Gmail, WhatsApp Web, LinkedIn, and filesystem monitoring. Monitors all sources for new emails, messages, and notifications. Creates action items in /Needs_Action/ folder. Manages watcher authentication, session persistence, health monitoring, and automatic restart on crash. Use when: (1) Setting up Silver tier watcher infrastructure, (2) Starting all watchers simultaneously, (3) Checking watcher health and status, (4) Debugging watcher issues, (5) Managing watcher sessions and credentials. Trigger phrases: "start Silver watchers", "run multi-watcher system", "monitor Gmail WhatsApp LinkedIn", "check watcher status", "setup multi-watcher infrastructure", "manage watchers 24/7".