Update prompt

docs/easycom_event_review_tool.md

@@ -140,9 +140,14 @@ non-backchannel overlap after which the wearer demonstrably holds or resumes
 the floor, and finally another interpretable overlap that fails to become a
 sustained takeover. `OTHER_HARD_NEGATIVE` is reserved for valid false-positive
 opportunities outside these named behaviors; it is never an uncertainty
-fallback. A short but complete answer to an addressed question remains a
-positive wearer entry; duration alone and later resumption by another speaker
-do not turn it into a wearer backchannel.
+fallback. Prompt v15 gives adjacency-pair completion priority over duration:
+a short but complete answer to an addressed question remains a positive wearer
+entry, and floor entry does not require the wearer to retain the next turn.
+Later resumption by the questioner or another speaker therefore does not turn
+the completed answer into a wearer backchannel. `ENTRY_WEARER_BACKCHANNEL` is
+reserved for feedback that does not answer a question, accept or reject a
+proposal, provide requested information, or otherwise complete an adjacency
+pair.
 
 During live adjudication, the CLI displays a dependency-free progress bar over
 all candidate/pass work, including the current pass, batch, percentage, and