Recommend applying only one AI policy label at a time

Author: Mariatta

triage/triage-team.rst

@@ -65,6 +65,9 @@ Use the AI policy labels for issues and PRs that don't follow the
 :ref:`guidelines for using AI tools <ai-tools>`. Don't apply them only because
 AI tools were used, or because the author disclosed using them.
 
+Apply only one of these labels to an issue or PR. If you add one when the
+other is already there, remove the other label.
+
 * Start with :gh-label:`AI-needs-explanation`. The bot asks the author to
   explain the work in their own words and leaves the issue or PR open.
 * Use :gh-label:`AI-guidelines-not-met` only for clear cases, such as a
@@ -73,7 +76,8 @@ AI tools were used, or because the author disclosed using them.
   use :gh-label:`AI-needs-explanation` instead, or consult a core developer.
 * If the author doesn't respond to :gh-label:`AI-needs-explanation`, or the
   response doesn't address the concern (for example, it is more generated
-  text), add :gh-label:`AI-guidelines-not-met`. The bot posts the closing
+  text), remove :gh-label:`AI-needs-explanation` and add
+  :gh-label:`AI-guidelines-not-met`. The bot posts the closing
   comment and closes the issue or PR. If you have any doubt, consult a core
   developer first.
 * If the author responds and the concern is resolved, remove the label.