diff --git a/docs/research/2026-07-06-177-stairs-pickup-handoff.md b/docs/research/2026-07-06-177-stairs-pickup-handoff.md
index db8833cd..7e224a0e 100644
--- a/docs/research/2026-07-06-177-stairs-pickup-handoff.md
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@@ -1,3 +1,9 @@
+> **🅿️ SUPERSEDED 2026-07-07 — #177 is PARKED and this doc's premise is WRONG.** The
+> "portal-visibility miss" framing below was DISPROVEN by a live retail cdb trace
+> (retail's flood collapses identically to ours). Do NOT follow the flood/clip workflow
+> here. Current truth + the fresh lead (step statics) live in **ISSUES #177 (session-3 +
+> 3b blocks)** and the render digest top banner. Kept only for the apparatus map.
+
 # Pickup handoff — #177 dungeon stairs pop in/out (portal-visibility miss at the stair cells)
 
 **Paste the companion prompt (bottom) into a fresh session.** Read this file, then