feat: Claude Code Monitor — lanes, pipelines and a merged workspace

Internal SmartGift build of a Claude Code monitoring dashboard.

Lanes: a durable unit of parallel agent work, one per working directory,
tracked across session restarts. Managed lanes are git worktrees the
dashboard provisions and can reset or remove behind a three-check destroy
guard and a counted preflight; adopted lanes are directories you already
own and are never destroyable.

Pipelines: a lane moves through pipeline stages. A stage the agent declares
with evidence renders green; a stage inferred from the tool-event stream
renders dashed amber and never counts as done. Detection is forward-only
within a 30-minute window, and never writes the declared stage.

Workspace: one page at /run with a lane grid, the selected lane's pipeline,
and a full Claude console behind a disclosure.

client/src/test-setup.ts

@@ -0,0 +1,27 @@
+/**
+ * @file test-setup.ts
+ * @description Vitest global setup for the React client test suite. Pulls in
+ * jest-dom matchers, initializes the real i18n bundle (same as production),
+ * forces English before each test for deterministic assertions, and runs
+ * Testing Library cleanup after every test to prevent DOM leakage between cases.
+ *
+ * Imported from `vitest.config.ts` via `setupFiles`.
+ *
+ * @author Nguyễn Ngọc Trí Vĩ <vinnt@smartgift.vn>
+ */
+
+import "@testing-library/jest-dom/vitest";
+import { cleanup } from "@testing-library/react";
+import { afterEach, beforeEach } from "vitest";
+import "./i18n/index";
+import i18n from "i18next";
+
+/** Pin locale to English — LanguageDetector may otherwise pick up zh/vi from the host OS. */
+beforeEach(() => {
+  i18n.changeLanguage("en");
+});
+
+/** Unmount rendered trees and reset the document between tests. */
+afterEach(() => {
+  cleanup();
+});