Add AI Policy

[reinecke]

Summarize your change.

This PR adds an AI coding policy to provide clarity for contributors using AI coding assistants.

This policy is forked from the thoughtful policy provided by OpenImageIO.

[codecov-commenter]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 83.60%. Comparing base (00c22fa) to head (0fcdbd4).

Additional details and impacted files

@@           Coverage Diff           @@
##             main    #2046   +/-   ##
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  Coverage   83.60%   83.60%           
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  Files         182      182           
  Lines       13575    13575           
  Branches     1261     1261           
=======================================
  Hits        11350    11350           
  Misses       2052     2052           
  Partials      173      173           

Flag	Coverage Δ
py-unittests	83.60% <ø> (ø)

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[darbyjohnston]

How about attribution just for the PR? Otherwise every commit will need DCO + LLM attribution, which seems like a lot.

[jminor]

How about attribution just for the PR? Otherwise every commit will need DCO + LLM attribution, which seems like a lot.

The DCO auto-enforcement system checks every commit, but git rebase --signoff makes that easy to batch apply. I agree that requiring the AI disclosure in every commit would be really annoying. I support the idea of only requiring it in the PR, or perhaps in "at least one commit" so we can carry that over into the squashed commit when we land each PR.

[reinecke]

I agree that requiring the AI disclosure in every commit would be really annoying.

+1

I support the idea of only requiring it in the PR, or perhaps in "at least one commit" so we can carry that over into the squashed commit when we land each PR.

This seems like a reasonable adjustment to me.

[apetrynet]

One minor suggestion, but this looks good to me