docs: ReaperDaemonJob docs, fix truncated node-config, update examples

[miguelgila]

Summary

• Fix truncated node-config page (docs: node configuration page has truncated example #48): expanded mdBook include to show full CONFIGURATION.md (was only showing first 54 lines, cutting off the YAML example)
• Update examples for Helm (chore: update examples to use Helm instead of deprecated Ansible #49): added example 12 to README.md with cleanup instructions for modern (10-12) and CRD-based (09, 12) examples
• ReaperDaemonJob documentation (docs: add documentation for example 12 (daemon-job) and update quick start guide #60): added full CRD reference (spec/status tables, dependency ordering, examples) to crds.md, created examples/12-daemon-job/README.md, added "What's Next" section to quick-start guide linking all three CRDs

Closes #48, #49, #60

Test plan

• cargo clippy --target x86_64-unknown-linux-gnu --all-targets -- -D warnings passes
• cargo test --workspace passes (222 tests)
• Verify docs render correctly via mdbook serve or GitHub Pages deploy

🤖 Generated with Claude Code

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 84.78%. Comparing base (b9abb82) to head (301722b).
⚠️ Report is 2 commits behind head on main.

Additional details and impacted files

@@            Coverage Diff             @@
##             main      #61      +/-   ##
==========================================
- Coverage   85.06%   84.78%   -0.28%     
==========================================
  Files           6        6              
  Lines         308      309       +1     
==========================================
  Hits          262      262              
- Misses         46       47       +1     

☔ View full report in Codecov by Sentry.
📢 Have feedback on the report? Share it here.

🚀 New features to boost your workflow:

• ❄️ Test Analytics: Detect flaky tests, report on failures, and find test suite problems.