Show Reddit recovery status in dashboard

tests/dashboard-login-banner.test.ts

@@ -0,0 +1,16 @@
+import fs from 'node:fs';
+import path from 'node:path';
+import { describe, expect, it } from 'vitest';
+
+describe('dashboard Reddit session banner', () => {
+  it('renders a persistent recovery banner with a Reddit login action', () => {
+    const html = fs.readFileSync(path.resolve('public/index.html'), 'utf8');
+
+    expect(html).toContain('id="reddit-session-banner"');
+    expect(html).toContain('id="reddit-session-banner-title"');
+    expect(html).toContain('Open Reddit Login');
+    expect(html).toContain("data.status === 'unreachable'");
+    expect(html).toContain("data.status === 'login-required'");
+    expect(html).toContain('info.publicUrl');
+  });
+});