run 1

docs/pt2-protocol-summary.md

@@ -494,6 +494,17 @@ Current caution:
 - So the best current model is a parallel set of response surfaces selected in
   part by the host payload pair, with the remaining question being which surface
   behaves like the true maintained background layer for an active panel.
+- A tighter HE39 pass on the `0x50`-band showed:
+  - `0x41 @ 20 D0` -> `07 80 50 24 DD 74`
+  - `0x45 @ 20 D0` -> `07 80 51 24 DD 75`
+  - `0x49 @ 20 D0` -> `07 80 52 24 DD 76`
+  - all of those can keep the panel in the clear / semi-awake state while the
+    script is active
+  - but serially they still behave as one-shot branch openings followed by
+    heartbeat-compatible maintenance, not as a richer multi-turn wake sequence
+- So the `0x50`-band currently looks like another valid maintained-background
+  surface inside the broader `20 D0` class, not yet a uniquely privileged
+  "real wake" surface.
 
 ## What We Do Not Know