fix(ci): fix test failures from recent feature additions

- Add ChatStore mock to all dashboard route tests that mock @fusion/core,
  since server.ts now instantiates ChatStore(store.getFusionDir(), ...)
- Add getFusionDir to createMockStore in server.test.ts
- Gate AI session cleanup scheduling behind shouldScheduleAiSessionCleanup()
  (returns false in test env) to prevent open handle warnings
- Fix desktop tests: DASHBOARD_URL is now exported as a function alias,
  update assertions to call DASHBOARD_URL() instead of using as string
- Add node:os mocks to system-metrics.test.ts for deterministic results
- Replace hardcoded maxWorkers=16 with availableParallelism()-based
  calculation in all vitest configs to prevent OOM on 2-core CI runners
- Add --workspace-concurrency=2 to pnpm test commands
- Fix TaskCard tests: update mission badge title assertions to full titles
- Remove unused /api/mesh/state route
- Fix plugin-auto-label: add isError field, async onTaskCreated, "tests" keyword
- Fix plugin-ci-status: add module-level logger, tighten test assertions

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

packages/core/src/system-metrics.test.ts

@@ -1,17 +1,42 @@
 import { describe, it, expect, beforeEach, vi } from "vitest";
 import { collectSystemMetrics } from "./system-metrics.js";
 
-const { checkDiskSpaceMock } = vi.hoisted(() => ({
+const { checkDiskSpaceMock, cpusMock, totalmemMock, freememMock, uptimeMock } = vi.hoisted(() => ({
   checkDiskSpaceMock: vi.fn(),
+  cpusMock: vi.fn(),
+  totalmemMock: vi.fn(),
+  freememMock: vi.fn(),
+  uptimeMock: vi.fn(),
 }));
 
 vi.mock("check-disk-space", () => ({
   default: checkDiskSpaceMock,
 }));
 
+vi.mock("node:os", () => ({
+  cpus: cpusMock,
+  totalmem: totalmemMock,
+  freemem: freememMock,
+  uptime: uptimeMock,
+}));
+
 describe("collectSystemMetrics", () => {
   beforeEach(() => {
     vi.clearAllMocks();
+    cpusMock.mockReturnValue([
+      {
+        times: {
+          user: 100,
+          nice: 0,
+          sys: 50,
+          idle: 150,
+          irq: 0,
+        },
+      },
+    ]);
+    totalmemMock.mockReturnValue(16_000);
+    freememMock.mockReturnValue(6_000);
+    uptimeMock.mockReturnValue(12.345);
     checkDiskSpaceMock.mockResolvedValue({
       diskPath: "/",
       free: 250_000,