Add CLAUDE.md documentation

[jhjaggars]

This PR adds CLAUDE.md documentation to help with AI-assisted development.

Generated using Claude Code automation.

[openshift-ci]

[APPROVALNOTIFIER] This PR is NOT APPROVED

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[codecov-commenter]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 59.24%. Comparing base (e4d6547) to head (7284ee9).
⚠️ Report is 4 commits behind head on main.

Additional details and impacted files

@@           Coverage Diff           @@
##             main     #676   +/-   ##
=======================================
  Coverage   59.24%   59.24%           
=======================================
  Files          62       62           
  Lines        4110     4110           
=======================================
  Hits         2435     2435           
  Misses       1526     1526           
  Partials      149      149           

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[openshift-ci]

@jhjaggars: The following tests failed, say /retest to rerun all failed tests or /retest-required to rerun all mandatory failed tests:

Test name	Commit	Details	Required	Rerun command
ci/prow/precommit-check	7284ee9	link	true	/test precommit-check
ci/prow/ci-index-addon-operator-bundle	7284ee9	link	true	/test ci-index-addon-operator-bundle

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