diff --git a/AgentCompany-New/tests/e2e/desktop.spec.ts b/AgentCompany-New/tests/e2e/desktop.spec.ts
index e93dab24..f312b29e 100644
--- a/AgentCompany-New/tests/e2e/desktop.spec.ts
+++ b/AgentCompany-New/tests/e2e/desktop.spec.ts
@@ -164,6 +164,25 @@ test("onboards, hires, and creates work in the Electron shell", async () => {
     await page.getByRole("button", { name: "Set", exact: true }).click();
     await expect(page.getByRole("button", { name: "active", exact: true })).toBeDisabled();
 
+    // Virtual office sidebar toggle
+    await page.getByRole("button", { name: "Office" }).click();
+    await expect(page.locator(".office-sidebar")).toBeVisible();
+    await page.locator(".office-sidebar").getByRole("button", { name: "Close office" }).click();
+    await expect(page.locator(".office-sidebar")).not.toBeVisible();
+
+    // Composio settings panel
+    await page.getByRole("button", { name: "Settings" }).click();
+    await page.getByRole("button", { name: "Tools", exact: true }).click();
+    await expect(page.getByText("External Tools")).toBeVisible();
+    await expect(page.getByText("GitHub")).toBeVisible();
+
+    // @mention with canonical handle in chat
+    await page.getByRole("button", { name: "Messages" }).click();
+    await page.getByText("general").first().click();
+    await page.getByRole("textbox", { name: "Message" }).fill("@alexchen what is the status?");
+    await page.getByRole("button", { name: "Send" }).click();
+    await expect(page.getByText("Alex Chen").first()).toBeVisible();
+
     await verifyPagesDoNotOverflow(page);
   } finally {
     await app.close();
@@ -205,7 +224,7 @@ async function verifyPagesDoNotOverflow(page: Page): Promise<void> {
       await page.getByRole("button", { name: nav, exact: true }).click();
       await expectPageToFit(page);
     }
-    for (const tab of ["Workspace", "Billing", "Providers", "Skills", "Migration"]) {
+    for (const tab of ["Workspace", "Billing", "Providers", "Tools", "Skills", "Migration"]) {
       await page.getByRole("button", { name: "Settings" }).click();
       await page.getByRole("button", { name: tab, exact: true }).click();
       await expectPageToFit(page);
diff --git a/AgentCompany-New/tests/integration/thread-participant-wake.test.ts b/AgentCompany-New/tests/integration/thread-participant-wake.test.ts
new file mode 100644
index 00000000..e0f0bfa1
--- /dev/null
+++ b/AgentCompany-New/tests/integration/thread-participant-wake.test.ts
@@ -0,0 +1,63 @@
+import { randomUUID } from "node:crypto";
+import { tmpdir } from "node:os";
+import { join } from "node:path";
+import { describe, expect, test } from "vitest";
+import { DatabaseConnection } from "../../src/main/database/connection";
+import { OrganizationService } from "../../src/main/services/organization-service";
+import { ChatService } from "../../src/main/services/chat-service";
+import { dispatchAgentTool, type AgentToolContext } from "../../src/main/services/agent-tools";
+
+function call(name: string, args: Record<string, unknown>) {
+  return { id: `call_${randomUUID()}`, name, arguments: args };
+}
+
+describe("thread participant wake", () => {
+  test("human reply in a thread wakes agent participants without explicit @mention", () => {
+    const connection = new DatabaseConnection(join(tmpdir(), `ac-threadwake-${randomUUID()}.db`));
+    const organization = new OrganizationService(connection.db);
+    let orgId = "";
+    let ceoId = "";
+    let employeeId = "";
+    let providerId = "";
+    connection.transaction(() => {
+      orgId = organization.createOrganization({ organizationName: "WakeCorp", employeeName: "Yang", mission: "m", goal: "g" });
+      providerId = (connection.db.prepare("select id from providers where org_id = ? and provider_key = 'openai'").get(orgId) as { id: string }).id;
+      connection.db.prepare("update providers set enabled = 1 where id = ?").run(providerId);
+      ceoId = organization.createAgent({
+        orgId, name: "CEO", role: "CEO", department: "Executive",
+        modelProviderId: providerId, modelId: "gpt-5.4", budgetCents: 25000, managerAgentId: null,
+      });
+      employeeId = (connection.db.prepare("select id from employees where org_id = ?").get(orgId) as { id: string }).id;
+    });
+
+    const chat = new ChatService(connection.db);
+    const deps = { db: connection.db, organization, chat };
+    const ctx: AgentToolContext = {
+      orgId, agent: { id: ceoId, modelProviderId: providerId, modelId: "gpt-5.4" },
+      taskProjectId: null, taskGoalId: null, workspace: null,
+    };
+
+    const firstResult = dispatchAgentTool(deps, ctx, call("send_message", { channel: "general", body: "The plan is ready for review." }));
+    const threadId = /thread_id="([^"]+)"/.exec(firstResult)?.[1];
+    expect(threadId).toBeTruthy();
+
+    const runsBeforeReply = connection.db.prepare("select count(*) as c from task_runs where org_id = ? and trigger = 'chat_mention'")
+      .get(orgId) as { c: number };
+
+    connection.transaction(() => {
+      chat.sendMessage({
+        orgId,
+        spaceId: (connection.db.prepare("select id from chat_spaces where org_id = ? and name = 'general'").get(orgId) as { id: string }).id,
+        threadId: threadId!,
+        senderType: "employee",
+        senderId: employeeId,
+        bodyMd: "Looks good, please proceed with the deployment.",
+        attachmentFileIds: [],
+      });
+    });
+
+    const runsAfterReply = connection.db.prepare("select count(*) as c from task_runs where org_id = ? and trigger = 'chat_mention'")
+      .get(orgId) as { c: number };
+    expect(runsAfterReply.c).toBeGreaterThan(runsBeforeReply.c);
+  });
+});