feat: add Reachability Center and Why Drawer components with tests

- Implemented ReachabilityCenterComponent for displaying asset reachability status with summary and filtering options.
- Added ReachabilityWhyDrawerComponent to show detailed reachability evidence and call paths.
- Created unit tests for both components to ensure functionality and correctness.
- Updated accessibility test results for the new components.

src/Web/StellaOps.Web/playwright.config.ts

@@ -1,17 +1,25 @@
-import { defineConfig } from '@playwright/test';
-
-const port = process.env.PLAYWRIGHT_PORT
-  ? Number.parseInt(process.env.PLAYWRIGHT_PORT, 10)
-  : 4400;
-
-export default defineConfig({
-  testDir: 'tests/e2e',
-  timeout: 30_000,
-  retries: process.env.CI ? 1 : 0,
-  use: {
-    baseURL: process.env.PLAYWRIGHT_BASE_URL ?? `http://127.0.0.1:${port}`,
-    trace: 'retain-on-failure',
-  },
+import { defineConfig } from '@playwright/test';
+
+// Prefer the same offline-friendly Chromium resolution as Karma/unit tests.
+// Falls back to Playwright-managed installs when not available.
+// eslint-disable-next-line @typescript-eslint/no-var-requires
+const { resolveChromeBinary } = require('./scripts/chrome-path');
+
+const port = process.env.PLAYWRIGHT_PORT
+  ? Number.parseInt(process.env.PLAYWRIGHT_PORT, 10)
+  : 4400;
+
+const chromiumExecutable = resolveChromeBinary(__dirname) as string | null;
+
+export default defineConfig({
+  testDir: 'tests/e2e',
+  timeout: 30_000,
+  retries: process.env.CI ? 1 : 0,
+  use: {
+    baseURL: process.env.PLAYWRIGHT_BASE_URL ?? `http://127.0.0.1:${port}`,
+    trace: 'retain-on-failure',
+    ...(chromiumExecutable ? { launchOptions: { executablePath: chromiumExecutable } } : {}),
+  },
   webServer: {
     command: 'npm run serve:test',
     reuseExistingServer: !process.env.CI,