diff --git a/.opencode/agents/planner.md b/.opencode/agents/planner.md
index 1236dd7458..ff838d77a5 100644
--- a/.opencode/agents/planner.md
+++ b/.opencode/agents/planner.md
@@ -20,6 +20,9 @@ everything they need to know: which files to touch for each task, code, testing,
 docs they might need to check, how to test it. Give them the whole plan as
 bite-sized tasks. DRY. YAGNI. TDD. Frequent commits.
 
+Do **not** suggest commit messages or commit names anywhere in your plans or
+responses — committing is the developer's responsibility.
+
 Assume they are a skilled developer, but know almost nothing about our toolset
 or problem domain. Assume they don't know good test design very well.