Convert apiToken/apiRequest to worker-scoped Playwright fixtures

Problem: Each test created a new browser context and performed a full
OIDC login (120 logins in a 40min serial run). By test ~60, Chromium
was bloated and login took 30s+ instead of 3s.

Fix: apiToken and apiRequest are now worker-scoped — login happens
ONCE per Playwright worker, token is reused for all API tests.
liveAuthPage stays test-scoped (UI tests need fresh pages).

Impact: ~120 OIDC logins → 1 per worker. Eliminates auth overhead
as the bottleneck for later tests in the suite.

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

src/Web/StellaOps.Web/tests/e2e/integrations/live-auth.fixture.ts

@@ -94,28 +94,28 @@ async function loginAndGetToken(page: Page): Promise<string> {
   throw new Error('Login failed: could not extract auth token');
 }
 
-export const test = base.extend<{
+// Test-scoped fixtures (fresh per test)
+type TestFixtures = {
   liveAuthPage: Page;
+};
+
+// Worker-scoped fixtures (shared across all tests in a worker)
+type WorkerFixtures = {
   apiToken: string;
   apiRequest: APIRequestContext;
-}>({
-  liveAuthPage: async ({ browser }, use) => {
-    const context = await browser.newContext({ ignoreHTTPSErrors: true });
-    const page = await context.newPage();
-    await loginAndGetToken(page);
-    await use(page);
-    await context.close();
-  },
+};
 
-  apiToken: async ({ browser }, use) => {
+export const test = base.extend<TestFixtures, WorkerFixtures>({
+  // Worker-scoped: login ONCE per worker, reuse token for all tests
+  apiToken: [async ({ browser }, use) => {
     const context = await browser.newContext({ ignoreHTTPSErrors: true });
     const page = await context.newPage();
     const token = await loginAndGetToken(page);
     await use(token);
     await context.close();
-  },
+  }, { scope: 'worker' }],
 
-  apiRequest: async ({ playwright, apiToken }, use) => {
+  apiRequest: [async ({ playwright, apiToken }, use) => {
     const ctx = await playwright.request.newContext({
       baseURL: BASE_URL,
       extraHTTPHeaders: {
@@ -126,6 +126,15 @@ export const test = base.extend<{
     });
     await use(ctx);
     await ctx.dispose();
+  }, { scope: 'worker' }],
+
+  // Test-scoped: each UI test gets a fresh authenticated page
+  liveAuthPage: async ({ browser }, use) => {
+    const context = await browser.newContext({ ignoreHTTPSErrors: true });
+    const page = await context.newPage();
+    await loginAndGetToken(page);
+    await use(page);
+    await context.close();
   },
 });