docs: Add guidance for AI assisted submissions to CONTRIBUTING.md

CONTRIBUTING.md

@@ -256,3 +256,21 @@ If sometimes you want to commit without checking, just run `git commit` with `--
 ```bash
 git commit --no-verify -m "... commit message ..."
 ```
+
+## AI Generated Submissions
+
+This project follows the guidance for AI generated submissions used by the
+[Arrow Project](https://arrow.apache.org/docs/dev/developers/overview.html#ai-generated-code).
+As such, it is expected that you will:
+
+- Only submit a PR if you are able to debug and own the changes yourself - review all generated
+  code to understand every detail
+- Match the style and conventions used in the rest of the codebase, including PR titles and descriptions
+- Be upfront about AI usage and summarise what was AI-generated
+- If there are parts you don’t fully understand, leave comments on your own PR explaining what steps you took to verify correctness
+- Watch for AI’s tendency to generate overly verbose comments, unnecessary test cases, and incorrect fixes
+- Break down large PRs into smaller ones to make review easier
+
+It is also important for submitters to be aware of potential copyright issues. See the ASF's
+[guidance](https://www.apache.org/legal/generative-tooling.html) on AI-generated code for further
+information on licensing considerations.