diff --git a/core b/core
index 74a6715..82ceaeb 160000
--- a/core
+++ b/core
@@ -1 +1 @@
-Subproject commit 74a6715cd7dfe11aec99665e3f8e59d3c471d58d
+Subproject commit 82ceaebbe6ee422e559046af4ccf87fc58318f2b
diff --git a/prompts/00_base.md b/prompts/00_base.md
index b666a40..46cc7bd 100644
--- a/prompts/00_base.md
+++ b/prompts/00_base.md
@@ -29,7 +29,7 @@ A plan step is not complete until it is marked done in the plan.
 
 # Filesystem
 
-The ollie 9P filesystem is mounted at `${OLLIE_9MOUNT:-$HOME/mnt/ollie}`. Throughout these instructions, `ollie/...` refers to paths under that mount point. All persistent state lives here.
+The ollie 9P filesystem is mounted at `{{.OllieMountPath}}`. Throughout these instructions, `ollie/...` refers to paths under that mount point. All persistent state lives here.
 
 ## Top-level