docs(contrib): rules for mass-edits

CONTRIBUTING.md

@@ -8,6 +8,30 @@ Even though the guide is made for contributors, it's also strongly recommended t
 
 ## What are the guidelines?
 
+### Mass edits
+
+If you've performed massive edits via automation, you must specify what automation you used. For example, if you ran the command:
+```sh
+sed -i 's/a/b/' resources/assets/uad_lists.json
+```
+You should 📋copy-paste that cmd to the pull-request description. This rule applies even if you use "proper" cmds such as `jq`, which safely edit structured data. And it also applies to AI, *especially* LLMs.
+
+This is required so that we can review your big patch without reading it. This improves [transparency](https://en.wikipedia.org/wiki/Transparency_(behavior)), which makes you more trust-worthy! Bonus points if you can provide a sequence of cmds that proves your patch contains exactly what you said it does. For the simple `sed` case, something like:
+```sh
+# alt: `gh pr checkout 0000 && git checkout main`
+git remote add fork https://github.com/user/uadng
+git fetch fork
+# example commit hash from upstream (not fork);
+# more reproducible than branch-name
+git checkout beefcafe
+sed -i 's/a/b/' resources/assets/uad_lists.json
+# compare unstaged change with commit from fork
+git diff cafebeef
+```
+Should be enough.
+
+You should be careful with mass-editing anyways. Even if the verification is successful, the effects [might not be what you expect](https://en.wikipedia.org/wiki/Scunthorpe_problem).
+
 ### Branching strategy
 
 As for our branching strategy, we're using [Trunk-Based Development](https://trunkbaseddevelopment.com/#one-line-summary).