chore(release): finalize v0.0.7

[dviejokfs]

Summary

• Updated CHANGELOG.md date to 2026-03-29 for the final 0.0.7 release
• Added missing fixes and features committed after the initial changelog was written:
  • Health monitoring improvements (404/405 acceptance, custom check paths)
  • E2E deployment test workflow
  • Email events deterministic ordering and migration fix
  • Next.js Docker preset reliability improvements
  • Compose label injection fixes
  • Network throughput display fix
  • Git checkout command fix (Temps doesn't work with rather trivial Github deployment #40)
  • Static asset persistence fixes for Dockerfile and backend presets
• Updated comparison links at the bottom of CHANGELOG.md

Test plan

• Verify CHANGELOG.md renders correctly on GitHub
• Verify all linked PRs/issues are correct
• Confirm no missing commits between v0.0.6 and HEAD