Check tier2 kind-8 recipe peers against runtime path

artifacts/exports/rt3-1.06/runtime-effect-kind8-tier2-recipe-signature-note.md

@@ -120,3 +120,27 @@ So the current corpus split is:
 
 - `book00.line02`-only mode shape is a three-map family
 - but `Louisiana.gmp` still has a distinct exact token-bearing signature even inside that family
+
+## Checked downstream split
+
+One immediate runtime-facing comparison is now grounded too:
+
+- `runtime inspect-smp Britain.gmp`
+- `runtime inspect-smp "South East USA.gmp"`
+
+Both mode-shape peers still expose in-file candidate names such as `Port01` and `Warehouse05`, but
+neither currently exposes any add-building dispatch-strip trigger rows:
+
+- `add_building_dispatch_strip_records_with_trigger_kind = 0`
+- `trigger_kinds_present = []`
+
+So the current checked downstream split is sharper than a generic “same mode-shape family” read:
+
+- `Britain.gmp` and `South East USA.gmp` share the coarse `book00.line02` mode footprint with
+  `Louisiana.gmp`
+- both also still carry the relevant candidate names in-file
+- but neither currently reaches the shipped add-building dispatch-strip family that
+  `Louisiana.gmp` does
+
+That makes `Louisiana.gmp` the first checked member of that mode-shape family whose distinct exact
+token-bearing `book00` signature also lines up with the add-building runtime path.