Expose chat command metadata in snapshots

AgentCompany-New/tests/e2e/desktop.spec.ts

@@ -57,9 +57,10 @@ test("onboards, hires, and creates work in the Electron shell", async () => {
     await page.getByLabel("Topic").fill("Release coordination");
     await page.locator(".modal").getByRole("button", { name: "Create" }).click();
     await expect(page.getByText("release").first()).toBeVisible();
-    await page.getByRole("textbox", { name: "Message" }).fill("Release channel opened.");
+    await page.getByRole("textbox", { name: "Message" }).fill("/handoff @Board review release plan");
     await page.getByRole("button", { name: "Send" }).click();
-    await expect(page.getByText("Release channel opened.")).toBeVisible();
+    await expect(page.getByText("@Board").first()).toBeVisible();
+    await expect(page.getByText("/handoff").first()).toBeVisible();
 
     await page.getByRole("button", { name: "Social" }).click();
     await page.getByRole("button", { name: "Connect account" }).click();

AgentCompany-New/tests/unit/domain-services.test.ts

@@ -235,6 +235,8 @@ describe("domain services", () => {
     expect(state.chatMessages).toHaveLength(1);
     expect(state.chatThreads).toHaveLength(1);
     expect(state.chatAttachments).toHaveLength(1);
+    expect(state.chatMentions[0]).toMatchObject({ targetType: "board", targetId: orgId });
+    expect(state.chatSlashInvocations[0]).toMatchObject({ command: "handoff" });
     expect(state.chatPresence).toHaveLength(1);
     const slash = connection.db.prepare("select command from chat_slash_invocations").get() as { command: string };
     const mention = connection.db.prepare("select target_type, target_id from chat_mentions").get() as { target_type: string; target_id: string };