E2E: remove auth bypass; use real Clerk sign-in

Merges PR #49. CI: https://github.com/abhi1693/openclaw-mission-control/actions/runs/21800456912

frontend/src/app/activity/page.tsx

@@ -298,7 +298,7 @@ export default function ActivityPage() {
           <div className="rounded-xl border border-slate-200 bg-white px-8 py-6 shadow-sm">
             <p className="text-sm text-slate-600">Sign in to view the feed.</p>
             <SignInButton
-              mode="modal"
+              mode="redirect"
               forceRedirectUrl="/activity"
               signUpForceRedirectUrl="/activity"
             >

frontend/src/app/sign-in/[[...rest]]/page.tsx

@@ -0,0 +1,13 @@
+"use client";
+
+import { SignIn } from "@clerk/nextjs";
+
+export default function SignInPage() {
+  // Dedicated sign-in route for Cypress E2E.
+  // Avoids modal/iframe auth flows and gives Cypress a stable top-level page.
+  return (
+    <main className="flex min-h-screen items-center justify-center bg-slate-50 p-6">
+      <SignIn routing="path" path="/sign-in" forceRedirectUrl="/activity" />
+    </main>
+  );
+}