From a8d29f22725f9e29b4457956190eb87f8595a357 Mon Sep 17 00:00:00 2001
From: Albert Alises <albert.alises@gmail.com>
Date: Tue, 26 May 2026 20:43:10 +0200
Subject: [PATCH] fix(core): Stop idle-killing Instance AI active runs awaiting
 HITL (#31154)

---
 .../runtime/__tests__/liveness-policy.test.ts | 21 ++++++++++++++-----
 .../src/runtime/liveness-policy.ts            |  4 ++--
 2 files changed, 18 insertions(+), 7 deletions(-)

diff --git a/packages/@n8n/instance-ai/src/runtime/__tests__/liveness-policy.test.ts b/packages/@n8n/instance-ai/src/runtime/__tests__/liveness-policy.test.ts
index c3d8e55a118..aee17fa5858 100644
--- a/packages/@n8n/instance-ai/src/runtime/__tests__/liveness-policy.test.ts
+++ b/packages/@n8n/instance-ai/src/runtime/__tests__/liveness-policy.test.ts
@@ -17,8 +17,8 @@ describe('InstanceAiLivenessPolicy', () => {
 			confirmationTimeoutMs: day,
 			backgroundTaskIdleTimeoutMs: 10 * minute,
 			backgroundTaskMaxLifetimeMs: 30 * minute,
-			activeRunIdleTimeoutMs: 10 * minute,
-			activeRunMaxLifetimeMs: 30 * minute,
+			activeRunIdleTimeoutMs: 0,
+			activeRunMaxLifetimeMs: day,
 		});
 
 		expect(createInstanceAiLivenessPolicyConfig({ confirmationTimeoutMs: 42_000 })).toEqual({
@@ -58,18 +58,29 @@ describe('InstanceAiLivenessPolicy', () => {
 		const decision = createPolicy().evaluate({
 			surface: 'active-run',
 			startedAt: 0,
-			lastActivityAt: 31 * minute,
-			now: 31 * minute,
+			lastActivityAt: day + minute,
+			now: day + minute,
 		});
 
 		expect(decision).toMatchObject({
 			action: 'timeout',
 			reason: 'max_lifetime',
 			surface: 'active-run',
-			timeoutMs: 30 * minute,
+			timeoutMs: day,
 		});
 	});
 
+	it('does not idle-timeout an active run that is waiting on another surface', () => {
+		const decision = createPolicy().evaluate({
+			surface: 'active-run',
+			startedAt: 0,
+			lastActivityAt: 0,
+			now: 6 * 60 * minute,
+		});
+
+		expect(decision).toEqual({ action: 'keep-alive' });
+	});
+
 	it('uses the one-day confirmation timeout for suspended runs and pending confirmations by default', () => {
 		const policy = createPolicy();
 		const shorterWorkTimeout = 30 * minute;
diff --git a/packages/@n8n/instance-ai/src/runtime/liveness-policy.ts b/packages/@n8n/instance-ai/src/runtime/liveness-policy.ts
index 950a9ede43d..274453ff51d 100644
--- a/packages/@n8n/instance-ai/src/runtime/liveness-policy.ts
+++ b/packages/@n8n/instance-ai/src/runtime/liveness-policy.ts
@@ -21,8 +21,8 @@ export const INSTANCE_AI_DEFAULT_LIVENESS_POLICY_CONFIG = {
 	confirmationTimeoutMs: DAY_MS,
 	backgroundTaskIdleTimeoutMs: 10 * MINUTE_MS,
 	backgroundTaskMaxLifetimeMs: 30 * MINUTE_MS,
-	activeRunIdleTimeoutMs: 10 * MINUTE_MS,
-	activeRunMaxLifetimeMs: 30 * MINUTE_MS,
+	activeRunIdleTimeoutMs: 0,
+	activeRunMaxLifetimeMs: DAY_MS,
 } satisfies InstanceAiLivenessPolicyConfig;
 
 export function createInstanceAiLivenessPolicyConfig(