AgentMon 0.2.0

Secure cross-computer monitoring foundation.\n\n- Adds versioned AgentMon Relay protocol v1\n- Adds certificate-pinned HTTPS with Keychain-held pairing token\n- Merges local and Windows sessions into one prioritized Agent Desk\n- Labels every row with MAC/PC, host name, and branch\n- Shows remote offline state without disrupting local monitoring\n- Adds Windows Relay pairing settings and privacy disclosure\n- Adds an end-to-end self-signed TLS relay integration test\n- Includes a detailed Windows companion implementation plan\n- Developer ID signed, notarized, and stapled