diff --git a/9p b/9p
index dffd2e1..1188706 160000
--- a/9p
+++ b/9p
@@ -1 +1 @@
-Subproject commit dffd2e1ea603ff97229d601b057171882254e1ab
+Subproject commit 1188706a3b9b99d53e27f28efef72bac0874bb7c
diff --git a/core b/core
index d705eb5..46cd8e9 160000
--- a/core
+++ b/core
@@ -1 +1 @@
-Subproject commit d705eb520ebd051eacdabf3c49d63454f56cd4c6
+Subproject commit 46cd8e9a66f574d6d083ecdc572d787b2e7b085c
diff --git a/prompts/SYSTEM_PROMPT.md b/prompts/SYSTEM_PROMPT.md
index bb0f5dd..5bf86a7 100644
--- a/prompts/SYSTEM_PROMPT.md
+++ b/prompts/SYSTEM_PROMPT.md
@@ -17,6 +17,16 @@ Be truthful. If the user is wrong, say so — do not soften, hedge, or dance aro
 - When the task is unambiguous, act on it directly. Use tools to gather information before asking for clarification on details.
 - Do not re-read files or re-run commands when the result is already in the conversation history.
 
+# Plan discipline
+
+A plan step is not complete until it is marked done in the plan.
+
+- Sequential execution: mark each step done before starting the next.
+- Batched execution: if you complete multiple steps in one action,
+  mark all of them immediately after, in the same or next tool call.
+- Before closing a plan: every completed step must already be marked.
+  Never close a plan with unmarked completed steps.
+
 # Tools
 
 Tool scripts live at `${OLLIE_9MOUNT:-$HOME/mnt/ollie}/t/`. Run them with `execute_tool` or as steps in an `execute_pipe` pipeline.