feat: harden test and registry evidence

tests/support/browser/strict-browser-test.ts

@@ -0,0 +1,46 @@
+import {
+  expect,
+  test as base,
+  type ConsoleMessage,
+  type Page,
+} from "@playwright/test";
+
+function ignoredConsole(message: ConsoleMessage) {
+  return (
+    message.type() === "warning" &&
+    message.text().includes("NO_COLOR")
+  );
+}
+
+export const test = base.extend({
+  page: async ({ page }, use) => {
+    const failures: string[] = [];
+    const onConsole = (message: ConsoleMessage) => {
+      if (
+        ["error", "warning"].includes(message.type()) &&
+        !ignoredConsole(message)
+      ) {
+        failures.push(`console:${message.type()}:${message.text()}`);
+      }
+    };
+    const onPageError = (error: Error) => {
+      failures.push(`pageerror:${error.name}`);
+    };
+    const onRequestFailed = (request: import("@playwright/test").Request) => {
+      failures.push(
+        `requestfailed:${request.method()}:${new URL(request.url()).pathname}:${request.failure()?.errorText ?? "unknown"}`,
+      );
+    };
+    page.on("console", onConsole);
+    page.on("pageerror", onPageError);
+    page.on("requestfailed", onRequestFailed);
+    await use(page);
+    page.off("console", onConsole);
+    page.off("pageerror", onPageError);
+    page.off("requestfailed", onRequestFailed);
+    expect(failures, "unexpected browser console/page errors").toEqual([]);
+  },
+});
+
+export { expect };
+export type { Page };