Adds a step to the CD pipeline that ensures CALENDAR_ENCRYPTION_KEY
exists in .env.macmini, generating one if missing.
Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
Adds a GitHub Actions workflow that detects changed services on push to
main and automatically rebuilds/restarts only the affected Docker containers
on the Mac Mini. Includes setup guide for the self-hosted runner.
Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
