From ec561894cb9fe39ca04950fe46afba8be29aa1d0 Mon Sep 17 00:00:00 2001
From: kumarabhirup <hey@kumareth.com>
Date: Thu, 19 Feb 2026 21:52:15 -0800
Subject: [PATCH] web: activate gateway subscription for rehydrated subagent
 streams

---
 apps/web/app/api/chat/subagent-stream/route.ts | 6 +++++-
 1 file changed, 5 insertions(+), 1 deletion(-)

diff --git a/apps/web/app/api/chat/subagent-stream/route.ts b/apps/web/app/api/chat/subagent-stream/route.ts
index a0d1c8f74ba..75a93999587 100644
--- a/apps/web/app/api/chat/subagent-stream/route.ts
+++ b/apps/web/app/api/chat/subagent-stream/route.ts
@@ -1,4 +1,4 @@
-import { subscribeToSubagent, hasActiveSubagent, isSubagentRunning, ensureRegisteredFromDisk } from "@/lib/subagent-runs";
+import { subscribeToSubagent, hasActiveSubagent, isSubagentRunning, ensureRegisteredFromDisk, ensureSubagentStreamable } from "@/lib/subagent-runs";
 import type { SseEvent } from "@/lib/subagent-runs";
 import { existsSync, readFileSync } from "node:fs";
 import { join } from "node:path";
@@ -51,6 +51,10 @@ export async function GET(req: Request) {
 		return new Response("Subagent not found", { status: 404 });
 	}
 
+	// For still-running subagents rehydrated from disk, activate the gateway
+	// WebSocket subscription so new events arrive in real time.
+	ensureSubagentStreamable(sessionKey);
+
 	const isActive = isSubagentRunning(sessionKey);
 	const encoder = new TextEncoder();
 	let closed = false;