Add call graph fixtures for various languages and scenarios

- Introduced `all-edge-reasons.json` to test edge resolution reasons in .NET.
- Added `all-visibility-levels.json` to validate method visibility levels in .NET.
- Created `dotnet-aspnetcore-minimal.json` for a minimal ASP.NET Core application.
- Included `go-gin-api.json` for a Go Gin API application structure.
- Added `java-spring-boot.json` for the Spring PetClinic application in Java.
- Introduced `legacy-no-schema.json` for legacy application structure without schema.
- Created `node-express-api.json` for an Express.js API application structure.

src/Web/StellaOps.Web/tests/e2e/first-signal-card.spec.ts

@@ -0,0 +1,57 @@
+import { expect, test } from '@playwright/test';
+
+import { policyAuthorSession } from '../../src/app/testing';
+
+const mockConfig = {
+  authority: {
+    issuer: 'https://authority.local',
+    clientId: 'stellaops-ui',
+    authorizeEndpoint: 'https://authority.local/connect/authorize',
+    tokenEndpoint: 'https://authority.local/connect/token',
+    logoutEndpoint: 'https://authority.local/connect/logout',
+    redirectUri: 'http://127.0.0.1:4400/auth/callback',
+    postLogoutRedirectUri: 'http://127.0.0.1:4400/',
+    scope:
+      'openid profile email ui.read authority:tenants.read advisory:read vex:read exceptions:read exceptions:approve aoc:verify findings:read orch:read vuln:view vuln:investigate vuln:operate vuln:audit',
+    audience: 'https://scanner.local',
+    dpopAlgorithms: ['ES256'],
+    refreshLeewaySeconds: 60,
+  },
+  apiBaseUrls: {
+    authority: 'https://authority.local',
+    scanner: 'https://scanner.local',
+    policy: 'https://scanner.local',
+    concelier: 'https://concelier.local',
+    attestor: 'https://attestor.local',
+  },
+  quickstartMode: true,
+};
+
+test.beforeEach(async ({ page }) => {
+  await page.addInitScript((session) => {
+    try {
+      window.sessionStorage.clear();
+    } catch {
+      // ignore storage errors in restricted contexts
+    }
+    (window as any).__stellaopsTestSession = session;
+  }, policyAuthorSession);
+
+  await page.route('**/config.json', (route) =>
+    route.fulfill({
+      status: 200,
+      contentType: 'application/json',
+      body: JSON.stringify(mockConfig),
+    })
+  );
+
+  await page.route('https://authority.local/**', (route) => route.abort());
+});
+
+test('first signal card renders on console status page (quickstart)', async ({ page }) => {
+  await page.goto('/console/status');
+
+  const card = page.getByRole('region', { name: 'First signal status' });
+  await expect(card).toBeVisible({ timeout: 10000 });
+  await expect(card).toContainText('Mock first signal for run last');
+});