Fix multiple bugs

[kenGucci]

Summary

Fixes 6 bugs and adds 6 features.

Bug Fixes

• Logger JSON missing closing brace
• psutil None guard (crash when not installed)
• fs.statfsSync compat for Node < 22
• Missing error handler on server.listen()
• Docker tini init for signal handling
• setup.py context manager for README
• agent.py overall_status was always operational
• Unused imports removed

Features

• Real remediation actions (kill high-CPU procs, drop caches, docker prune, log rotate, temp cleanup)
• SSH remote agent: monitor and fix remote hosts
• Slack webhook + SMTP email notifications
• Python test suite (16 tests)
• Comprehensive CI/CD: matrix test (Node 18/20/22 x Python 3.10/3.11/3.12), lint, security audit, releases
• Unified .env config with python-dotenv

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Project	Deployment	Actions	Updated (UTC)
automatic-maintenance	Ready	Preview, Comment	Jun 9, 2026 8:10pm