diff --git a/plan/status/foundation.md b/plan/status/foundation.md
index b8a3592..01eb878 100644
--- a/plan/status/foundation.md
+++ b/plan/status/foundation.md
@@ -1,6 +1,9 @@
 # Status — foundation
 
-## Round 0 — 2026-07-16 — STATUS: ready_to_merge
+## Round 0 — 2026-07-16 — STATUS: merged
+
+**Merged:** `foundation` → `main` (fast-forward, commit cf6a6fb) after all acceptance
+below passed. Local only — not yet pushed to `origin` (awaiting go-ahead).
 
 **Directives acknowledged:** round 0 of plan/DIRECTIVES.md (run `foundation` only; contracts
 correctness beats speed; lanes hard-depend on API shapes, schema, pose math, synthetic fixtures).