feat: add health check endpoint, file upload result handling, and Playwright E2E tests

- Add /health endpoint with anonymous access for monitoring
- Add FileUploadResult<T> model and PostMultipartForFileResultAsync for proper upload response handling
- Add ApiResult.Success() factory method for interface types
- Refactor Login.razor for cleaner code
- Add comprehensive Playwright E2E test suite with fixtures and helpers

TestScripts/playwright/playwright.config.ts

@@ -0,0 +1,40 @@
+import { defineConfig, devices } from '@playwright/test';
+
+export default defineConfig({
+  testDir: './tests',
+  fullyParallel: false,
+  forbidOnly: !!process.env.CI,
+  retries: process.env.CI ? 2 : 0,
+  workers: 1,
+  reporter: 'html',
+
+  // Increase timeout for Blazor WASM initialization
+  timeout: 180000, // 3 minutes per test
+  expect: {
+    timeout: 30000, // 30 seconds for assertions
+  },
+
+  use: {
+    baseURL: process.env.BASE_URL || 'http://localhost:5294',
+    trace: 'on-first-retry',
+    screenshot: 'only-on-failure',
+
+    // Longer timeouts for Blazor WASM
+    navigationTimeout: 120000, // 2 minutes for page load
+    actionTimeout: 30000, // 30 seconds for actions
+  },
+
+  projects: [
+    {
+      name: 'chromium',
+      use: { ...devices['Desktop Chrome'] },
+    },
+  ],
+
+  /* Run local dev server before starting tests */
+  // webServer: {
+  //   command: 'dotnet run --project ../NEW/src/JdeScoping.Host/JdeScoping.Host.csproj',
+  //   url: 'http://localhost:5294',
+  //   reuseExistingServer: !process.env.CI,
+  // },
+});