add our agent files for documentation

[aaarendt]

This PR exposes the agent markdown files I have been using as part of the research/plan/implement workflow via the SSEC RSE Plugins. These will be useful for other agentic development including tutorial development in the cookbook.

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 59.52%. Comparing base (c5adf19) to head (2e27d4f).
⚠️ Report is 3 commits behind head on master.

Additional details and impacted files

@@           Coverage Diff           @@
##           master     #212   +/-   ##
=======================================
  Coverage   59.52%   59.52%           
=======================================
  Files          23       23           
  Lines        1218     1218           
=======================================
  Hits          725      725           
  Misses        493      493           

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