diff --git a/packages/coding-agent/changelog.d/fix-acp-async-result-terminal-correlation.md b/packages/coding-agent/changelog.d/fix-acp-async-result-terminal-correlation.md
new file mode 100644
index 00000000000..450fa64ffa3
--- /dev/null
+++ b/packages/coding-agent/changelog.d/fix-acp-async-result-terminal-correlation.md
@@ -0,0 +1,3 @@
+### Fixed
+
+- Preserve active ACP prompt correlation on async-result and trigger-turn continuations.
diff --git a/packages/coding-agent/src/session/agent-session.ts b/packages/coding-agent/src/session/agent-session.ts
index 75fb0717a02..4b633b3259e 100644
--- a/packages/coding-agent/src/session/agent-session.ts
+++ b/packages/coding-agent/src/session/agent-session.ts
@@ -5597,12 +5597,14 @@ export class AgentSession {
 				void this.#queueFollowUpAfterReservation(message, displayText, {
 					createDisplayEntry: false,
 					trackExternalFollowUp: false,
+					sdkRunToken: this.#activeSdkRunToken,
 				}).catch(error => {
 					this.#settleDeliveredOwnedRegistrations([message]);
 					logger.warn("Owned streaming follow-up was rejected", { error: String(error) });
 				});
 			},
 			injectIdle: async (messages, signal) => {
+				const sdkRunToken = this.#activeSdkRunToken;
 				// Mandated boundary comment (corrected turn semantics): same origin
 				// split as the streaming injector — an allowed owned-completion
 				// delivery starts a fresh turn attempt/lineage and is not a
@@ -5637,14 +5639,14 @@ export class AgentSession {
 								await this.agent.prompt(first, {
 									...this.#managedFallbackPromptOptions(),
 									onRunAccepted: (handle: AttemptRunHandle) => {
-										if (handle) this.#acceptSdkAttemptRun(handle);
+										if (handle) this.#acceptSdkAttemptRun(handle, sdkRunToken);
 									},
 								});
 							} else {
 								await this.agent.prompt(survivors, {
 									...this.#managedFallbackPromptOptions(),
 									onRunAccepted: (handle: AttemptRunHandle) => {
-										if (handle) this.#acceptSdkAttemptRun(handle);
+										if (handle) this.#acceptSdkAttemptRun(handle, sdkRunToken);
 									},
 								});
 							}
@@ -15483,6 +15485,7 @@ export class AgentSession {
 				forceOneAtATime: options?.followUpQueuePolicy === "sequential",
 				createDisplayEntry: false,
 				trackExternalFollowUp: false,
+				sdkRunToken: this.#activeSdkRunToken,
 			});
 			this.#bindCustomDisplayEntry(appMessage, "followUp");
 			// The session can report streaming while no agent loop owns the queue
diff --git a/packages/coding-agent/test/agent-session-concurrent.test.ts b/packages/coding-agent/test/agent-session-concurrent.test.ts
index 39e7ecfdbe1..0eead1e7806 100644
--- a/packages/coding-agent/test/agent-session-concurrent.test.ts
+++ b/packages/coding-agent/test/agent-session-concurrent.test.ts
@@ -790,7 +790,6 @@ describe("AgentSession concurrent prompt guard", () => {
 		await hiddenTurn;
 		await firstPrompt;
 		await session.waitForIdle();
-
 		expect(callMessages).toHaveLength(2);
 		expect(
 			callMessages[1]?.some(message => {