fix(e2e): worker fixture video paths and known shell a11y exclusions

Worker-scoped rhdhContext runs before testInfo.file is set; fall back to
worker index for video output paths. Exclude documented RHDHPLAN-954 shell
axe rules and wait for progress bars before scanning.

Co-authored-by: Cursor <cursoragent@cursor.com>

Author: schultzp2020

e2e-tests/playwright/utils/accessibility.ts

@@ -6,13 +6,26 @@ export async function runAccessibilityTests(
   testInfo: TestInfo,
   attachName = "accessibility-scan-results.violations.json",
 ) {
+  // Let Backstage loading indicators finish before scanning the page shell.
+  await page
+    .locator('[role="progressbar"]')
+    .first()
+    .waitFor({ state: "hidden", timeout: 60_000 })
+    .catch(() => {});
+
   // Type mismatch between Playwright's Page and AxeBuilder's expected type
   // oxlint-disable-next-line typescript/no-unsafe-type-assertion -- @axe-core/playwright Page type differs from @playwright/test
   const accessibilityScanResults = await new AxeBuilder({ page } as unknown as {
     page: typeof page;
   })
     .withTags(["wcag2a", "wcag2aa", "wcag21a", "wcag21aa"])
-    .disableRules(["color-contrast"])
+    .disableRules([
+      "color-contrast",
+      // Known global shell violations tracked under RHDHPLAN-954.
+      "aria-progressbar-name",
+      "list",
+      "nested-interactive",
+    ])
     .analyze();
   await testInfo.attach(attachName, {
     body: JSON.stringify(accessibilityScanResults.violations, null, 2),

e2e-tests/playwright/utils/common/browser.ts

@@ -30,10 +30,17 @@ export function parseAuthStateCookies(content: string): Cookie[] {
   return cookies;
 }
 
+function resolveVideoDir(testInfo: TestInfo): string {
+  const specStem =
+    typeof testInfo.file === "string" && testInfo.file !== ""
+      ? path.parse(testInfo.file).name.replace(/\.spec$/u, "")
+      : `worker-${testInfo.workerIndex}`;
+  const suiteName = testInfo.titlePath[1] ?? testInfo.titlePath[0] ?? "suite";
+  return `test-results/${specStem}/${suiteName}`;
+}
+
 export async function setupBrowser(browser: Browser, testInfo: TestInfo) {
-  const videoDir = `test-results/${path
-    .parse(testInfo.file)
-    .name.replace(".spec", "")}/${testInfo.titlePath[1] ?? "suite"}`;
+  const videoDir = resolveVideoDir(testInfo);
 
   const context = await browser.newContext({
     recordVideo: {