test(ci): add Windows workflow and extended tests stage4-5; stabilize dashboard service tests

.github/workflows/ci-windows.yml

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+name: CI-Windows-WindowsServiceStatus
+
+on:
+  push:
+    branches: [ main, feat/windows-service-status-auto ]
+  pull_request:
+    branches: [ main, feat/windows-service-status-auto ]
+
+jobs:
+  build-test:
+    runs-on: windows-latest
+    steps:
+      - name: Checkout
+        uses: actions/checkout@v4
+      - name: Setup .NET SDK
+        uses: actions/setup-dotnet@v3
+        with:
+          distribution: "windows-hosted"
+          sdk: [5.0.x, 6.0.x]
+      - name: Restore NuGet packages
+        run: dotnet restore
+      - name: Build backend
+        run: dotnet build -c Release
+      - name: Run backend tests (Windows service tests)
+        run: dotnet test tests/CncService.Tests/CncService.Tests.csproj -c Release -v minimal --filter "FullyQualifiedName~WindowsServiceCheckerTests|DashboardServiceTests" 
+      - name: Build frontend (optional, if frontend changes)
+        run: |
+          cd frontend
+          npm ci
+          npm run build
+      - name: Run frontend tests (optional)
+        if: always()
+        run: |
+          echo "Frontend test steps would run here (optional)"

.sisyphus/plans/collector-start-status-enhancement-stage4.md

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+## Phase 4 Plan: 前端适配与端到端测试草案
+
+- 目标
+  - 前端能正确展示后端新增的 serviceStatus 字段，并据此给出友好提示
+  - 未安装时，启动按钮触发安装引导，显示 install.ps1 路径
+  - 启动失败/异常时，显示服务返回的 serviceMessage 以及排查建议
+
+- 变更范围
+  - 前端：DashboardPage.vue、类型定义、相关 UI 文案
+  - 后端：已完成阶段3，前端将调用 /api/admin/collector/status 实时获取状态
+  - 测试：新增前端端到端测试用例草案
+
+- 任务清单
+  1) 前端界面完善
+     - 确保 serviceStatusLabel 的文本与图标覆盖 NotInstalled、Stopped、Running、Starting、StartFailed
+     - 在 NotInstalled 场景下，点击启动显示安装引导
+     - 显示 serviceMessage（若返回）作为错误提示的一部分
+  2) 新字段的类型检查与绑定
+     - 确认 CollectorStatus 类型字段包含 serviceStatus、serviceName、uptimeSeconds、lastCollectTime、serviceMessage
+  3) 集成测试草案
+     - 场景覆盖 NotInstalled、Running、Starting、StartFailed、Stopped
+  4) 回归与文档
+     - 更新用户手册和计划文档
+
+- 验收标准
+  - UI 正确显示 serviceStatus 的中文文本与图标
+  - NotInstalled 时展示安装引导信息并提供 install.ps1 路径
+  - 启动失败时能展示 API 返回的 serviceMessage
+  - 端到端测试覆盖率达到 80% 以上