diff --git a/packages/coding-agent/test/task/autoload-skills.test.ts b/packages/coding-agent/test/task/autoload-skills.test.ts
index 21ac76e33..2796182d8 100644
--- a/packages/coding-agent/test/task/autoload-skills.test.ts
+++ b/packages/coding-agent/test/task/autoload-skills.test.ts
@@ -55,6 +55,7 @@ function createMockSession(
 		getLastAssistantMessage: () => state.messages[state.messages.length - 1],
 		abort: async () => {},
 		dispose: async () => {},
+		setIrcWakeTurnObserver: () => {},
 	} as unknown as AgentSession;
 }
 
diff --git a/packages/coding-agent/test/task/executor-async-quiescence.test.ts b/packages/coding-agent/test/task/executor-async-quiescence.test.ts
index 25c3b3d90..c4bcd0ce5 100644
--- a/packages/coding-agent/test/task/executor-async-quiescence.test.ts
+++ b/packages/coding-agent/test/task/executor-async-quiescence.test.ts
@@ -146,6 +146,7 @@ function createAsyncSession(
 		},
 		dispose: async () => {},
 	};
+	session.setIrcWakeTurnObserver = () => {};
 	harness.session = session as unknown as AgentSession;
 	return harness;
 }
diff --git a/packages/coding-agent/test/task/executor-launch-startup.test.ts b/packages/coding-agent/test/task/executor-launch-startup.test.ts
index 525a492b2..c78ae9ac2 100644
--- a/packages/coding-agent/test/task/executor-launch-startup.test.ts
+++ b/packages/coding-agent/test/task/executor-launch-startup.test.ts
@@ -1,6 +1,7 @@
 import { afterEach, expect, it, vi } from "bun:test";
 import { AuthStorage } from "@oh-my-pi/pi-ai";
 import { ModelRegistry } from "@oh-my-pi/pi-coding-agent/config/model-registry";
+import { ExtensionRuntime } from "@oh-my-pi/pi-coding-agent/extensibility/extensions/loader";
 import type { CreateAgentSessionResult } from "@oh-my-pi/pi-coding-agent/sdk";
 import * as sdkModule from "@oh-my-pi/pi-coding-agent/sdk";
 import type { AgentSession, AgentSessionEvent } from "@oh-my-pi/pi-coding-agent/session/agent-session";
@@ -66,16 +67,18 @@ it("overlaps registry refresh with session-file opening and session setup", asyn
 		getLastAssistantMessage: () => undefined,
 		abort: async () => {},
 		dispose: async () => {},
+		setIrcWakeTurnObserver: () => {},
 	} as unknown as AgentSession;
 	vi.spyOn(sdkModule, "createAgentSession").mockImplementation(async () => {
 		sessionCreationStarted.resolve();
 		sessionCreated = true;
-		return {
+		const result: CreateAgentSessionResult = {
 			session,
-			extensionsResult: {},
+			extensionsResult: { extensions: [], errors: [], runtime: new ExtensionRuntime() },
 			setToolUIContext: () => {},
 			eventBus: new EventBus(),
-		} as unknown as CreateAgentSessionResult;
+		};
+		return result;
 	});
 
 	const run = runSubprocess({
diff --git a/packages/coding-agent/test/task/executor-pass-through.test.ts b/packages/coding-agent/test/task/executor-pass-through.test.ts
index b6a52a0e9..47d697645 100644
--- a/packages/coding-agent/test/task/executor-pass-through.test.ts
+++ b/packages/coding-agent/test/task/executor-pass-through.test.ts
@@ -50,6 +50,7 @@ function createMockSession(onPrompt: (params: { emit: (event: AgentSessionEvent)
 		abort: async () => {},
 		dispose: async () => {},
 	};
+	session.setIrcWakeTurnObserver = () => {};
 	return session as unknown as AgentSession;
 }
 
diff --git a/packages/coding-agent/test/task/executor-prewalk.test.ts b/packages/coding-agent/test/task/executor-prewalk.test.ts
index 9096c2124..6b5b31535 100644
--- a/packages/coding-agent/test/task/executor-prewalk.test.ts
+++ b/packages/coding-agent/test/task/executor-prewalk.test.ts
@@ -74,6 +74,7 @@ function yieldEmittingSession(
 		abort: async () => {},
 		dispose: async () => {},
 	};
+	session.setIrcWakeTurnObserver = () => {};
 	return session as unknown as AgentSession;
 }
 
diff --git a/packages/coding-agent/test/task/executor-recent-output.test.ts b/packages/coding-agent/test/task/executor-recent-output.test.ts
index 8ba18a942..3d1230b7a 100644
--- a/packages/coding-agent/test/task/executor-recent-output.test.ts
+++ b/packages/coding-agent/test/task/executor-recent-output.test.ts
@@ -196,6 +196,7 @@ function createScriptedSession(
 	// AgentSession is a concrete class; the executor consumes only this
 	// structural subset. Deliberate documented test-double escape hatch,
 	// mirroring test/task/executor-pass-through.test.ts.
+	session.setIrcWakeTurnObserver = () => {};
 	return { session: session as unknown as AgentSession, emitted: emittedGate.promise };
 }
 
diff --git a/packages/coding-agent/test/task/executor-soft-budget.test.ts b/packages/coding-agent/test/task/executor-soft-budget.test.ts
index 7fbd28c57..a495ede1a 100644
--- a/packages/coding-agent/test/task/executor-soft-budget.test.ts
+++ b/packages/coding-agent/test/task/executor-soft-budget.test.ts
@@ -63,6 +63,7 @@ function createMockSession(
 	};
 
 	const session: Partial<AgentSession> = {
+		setIrcWakeTurnObserver: () => {},
 		state: { messages: [] } as never,
 		agent: { state: { systemPrompt: ["test"] } } as never,
 		model: { api: "anthropic-messages" } as never,
diff --git a/packages/coding-agent/test/task/executor-subagent-reminders.test.ts b/packages/coding-agent/test/task/executor-subagent-reminders.test.ts
index 5ae3d5cfb..7a85093cf 100644
--- a/packages/coding-agent/test/task/executor-subagent-reminders.test.ts
+++ b/packages/coding-agent/test/task/executor-subagent-reminders.test.ts
@@ -81,6 +81,7 @@ function createMockSession(
 		dispose: async () => {},
 	};
 
+	session.setIrcWakeTurnObserver = () => {};
 	return session as unknown as AgentSession;
 }
 
diff --git a/packages/coding-agent/test/task/executor-wall-clock.test.ts b/packages/coding-agent/test/task/executor-wall-clock.test.ts
index 0780d8cf9..b03267093 100644
--- a/packages/coding-agent/test/task/executor-wall-clock.test.ts
+++ b/packages/coding-agent/test/task/executor-wall-clock.test.ts
@@ -31,6 +31,7 @@ function createHangingSession(): HangingSessionHandle {
 	let abortCount = 0;
 	const { promise: hang, resolve: releaseHang } = Promise.withResolvers<void>();
 	const session: Partial<AgentSession> = {
+		setIrcWakeTurnObserver: () => {},
 		state: { messages: [] } as never,
 		agent: { state: { systemPrompt: ["test"] } } as never,
 		extensionRunner: undefined as never,
@@ -121,6 +122,7 @@ describe("runSubprocess wall clock (task.maxRuntimeMs)", () => {
 		// hang; we only need to assert that NO timeout fires when maxRuntimeMs=0.
 		const settings = Settings.isolated({ "task.maxRuntimeMs": 0 });
 		const fastSession: Partial<AgentSession> = {
+			setIrcWakeTurnObserver: () => {},
 			state: { messages: [] } as never,
 			agent: { state: { systemPrompt: ["test"] } } as never,
 			extensionRunner: undefined as never,
@@ -209,6 +211,7 @@ describe("runSubprocess wall clock (task.maxRuntimeMs)", () => {
 		const lateDisposed = Promise.withResolvers<void>();
 		const lateSession = {
 			dispose: async () => lateDisposed.resolve(),
+			setIrcWakeTurnObserver: () => {},
 		} as unknown as AgentSession;
 		let lateInstall = registry.get("late-generation");
 		vi.spyOn(sdkModule, "createAgentSession").mockImplementation(async (options = {}) => {
@@ -245,7 +248,10 @@ describe("runSubprocess wall clock (task.maxRuntimeMs)", () => {
 		const cancelled = await run;
 		expect(cancelled.aborted).toBe(true);
 
-		const replacementSession = { dispose: async () => {} } as unknown as AgentSession;
+		const replacementSession = {
+			dispose: async () => {},
+			setIrcWakeTurnObserver: () => {},
+		} as unknown as AgentSession;
 		const replacement = registry.register({
 			id: "late-generation",
 			displayName: "replacement B",
@@ -272,6 +278,7 @@ describe("runSubprocess wall clock (task.maxRuntimeMs)", () => {
 		let listenerRef: ((event: AgentSessionEvent) => void) | undefined;
 		let abortCount = 0;
 		const session: Partial<AgentSession> = {
+			setIrcWakeTurnObserver: () => {},
 			state: { messages: [] } as never,
 			agent: { state: { systemPrompt: ["test"] } } as never,
 			extensionRunner: undefined as never,
@@ -350,6 +357,7 @@ describe("runSubprocess wall clock (task.maxRuntimeMs)", () => {
 		let abortCount = 0;
 		let abortCountBeforeYieldExecutionEnd: number | undefined;
 		const session: Partial<AgentSession> = {
+			setIrcWakeTurnObserver: () => {},
 			state: { messages: [] } as never,
 			agent: { state: { systemPrompt: ["test"] } } as never,
 			extensionRunner: undefined as never,
@@ -450,6 +458,7 @@ describe("runSubprocess wall clock (task.maxRuntimeMs)", () => {
 		let abortCountBeforeValidYieldExecutionEnd: number | undefined;
 		const promptCalls: Array<{ text: string; options?: PromptOptions }> = [];
 		const session: Partial<AgentSession> = {
+			setIrcWakeTurnObserver: () => {},
 			state: { messages: [] } as never,
 			agent: { state: { systemPrompt: ["test"] } } as never,
 			extensionRunner: undefined as never,
@@ -580,6 +589,7 @@ describe("runSubprocess wall clock (task.maxRuntimeMs)", () => {
 		let abortCountBeforeYieldExecutionEnd: number | undefined;
 		let abortCountAfterFollowingTurn: number | undefined;
 		const session: Partial<AgentSession> = {
+			setIrcWakeTurnObserver: () => {},
 			state: { messages: [] } as never,
 			agent: { state: { systemPrompt: ["test"] } } as never,
 			extensionRunner: undefined as never,
@@ -663,6 +673,7 @@ describe("runSubprocess wall clock (task.maxRuntimeMs)", () => {
 		// executor must surface it on SingleResult.contextTokens.
 		const settings = Settings.isolated({ "task.maxRuntimeMs": 0 });
 		const fastSession: Partial<AgentSession> = {
+			setIrcWakeTurnObserver: () => {},
 			state: { messages: [] } as never,
 			agent: { state: { systemPrompt: ["test"] } } as never,
 			extensionRunner: undefined as never,
diff --git a/packages/coding-agent/test/task/subagent-lsp.test.ts b/packages/coding-agent/test/task/subagent-lsp.test.ts
index 050bca485..85961c2bc 100644
--- a/packages/coding-agent/test/task/subagent-lsp.test.ts
+++ b/packages/coding-agent/test/task/subagent-lsp.test.ts
@@ -85,6 +85,7 @@ function createYieldingSession(): AgentSession {
 		getLastAssistantMessage: () => state.messages[state.messages.length - 1],
 		abort: async () => {},
 		dispose: async () => {},
+		setIrcWakeTurnObserver: () => {},
 	} as unknown as AgentSession;
 }
 
diff --git a/packages/coding-agent/test/task/task-guards.test.ts b/packages/coding-agent/test/task/task-guards.test.ts
index 52cea2a99..53ed3ccef 100644
--- a/packages/coding-agent/test/task/task-guards.test.ts
+++ b/packages/coding-agent/test/task/task-guards.test.ts
@@ -76,6 +76,7 @@ function createFakeSession(config: FakeSessionConfig = {}): FakeSessionHandle {
 	if (!config.hang) releaseHang();
 
 	const session: Partial<AgentSession> = {
+		setIrcWakeTurnObserver: () => {},
 		state: { messages: [] } as never,
 		agent: { state: { systemPrompt: ["test"] } } as never,
 		extensionRunner: undefined as never,
@@ -108,6 +109,7 @@ function createFakeSession(config: FakeSessionConfig = {}): FakeSessionHandle {
 			releaseHang();
 		},
 		dispose: async () => {},
+		setIrcWakeTurnObserver: () => {},
 	};
 	return {
 		session: session as AgentSession,