- linux.md: redact sudo password from grep example
- networking.md: update nine→eleven service count in summary
- 01-what-you-need.md: redact real VPS IP from example
Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
Moved homelab-mastery repo content into homelab-mastery/ subdirectory.
Covers architecture, concepts, certifications, interview-prep, and learning-path.
Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>