diff --git a/apps/android/app/src/main/java/ai/openclaw/app/chat/ChatController.kt b/apps/android/app/src/main/java/ai/openclaw/app/chat/ChatController.kt
index 3b46fa2324e8..bbeefd5c7330 100644
--- a/apps/android/app/src/main/java/ai/openclaw/app/chat/ChatController.kt
+++ b/apps/android/app/src/main/java/ai/openclaw/app/chat/ChatController.kt
@@ -5885,9 +5885,10 @@ class ChatController internal constructor(
         }
       }
       "plan" -> {
-        // Released Gateways through v2026.7.x only emit stream:"plan" and lack progressCard.get.
-        // Remove this fallback with the Gateway's legacy dual-emit once the minimum supported
-        // Gateway ships the store (tracked follow-up).
+        // Released Gateways through v2026.8.x only emit stream:"plan" and lack progressCard.get.
+        // SUNSET 2026-10-18: this fallback is a fixed cutover window, not a permanent contract.
+        // On that date delete it together with the Gateway's legacy stream:"plan" dual-emit and
+        // the Apple twin in ChatViewModel+TransportEvents.swift. Tracked: #125639.
         if (gatewayAdvertisesProgressCard() != false) return
         val planData = data ?: return
         if (planData["phase"].asStringOrNull() != "update") return
diff --git a/apps/shared/OpenClawKit/Sources/OpenClawChatUI/ChatViewModel+TransportEvents.swift b/apps/shared/OpenClawKit/Sources/OpenClawChatUI/ChatViewModel+TransportEvents.swift
index 75a128703f5b..7d084b31033f 100644
--- a/apps/shared/OpenClawKit/Sources/OpenClawChatUI/ChatViewModel+TransportEvents.swift
+++ b/apps/shared/OpenClawKit/Sources/OpenClawChatUI/ChatViewModel+TransportEvents.swift
@@ -650,8 +650,9 @@ extension OpenClawChatViewModel {
         case "plan":
             // Released Gateways through v2026.8.x lack progressCard.get and only emit stream:"plan".
             // Rendering these only when the store is known-absent keeps a dual-emitting Gateway from
-            // fighting the durable card. Remove with the Gateway's legacy dual-emit once the minimum
-            // supported Gateway ships the store.
+            // fighting the durable card. SUNSET 2026-10-18: this fallback is a fixed cutover window,
+            // not a permanent contract. On that date delete it together with the Gateway's legacy
+            // stream:"plan" dual-emit and the Android twin in ChatController.kt. Tracked: #125639.
             guard self.progressCardStoreAvailable == false else { return }
             guard evt.data["phase"]?.value as? String == "update" else { return }
             let steps = Self.parseLegacyProgressCardSteps(evt.data["steps"])