fix: verify stored sessions from a Reddit page

src/browser/client.ts

@@ -133,7 +133,14 @@ export class BrowserClient {
   /** Returns the username and stable t2 account ID for identity binding. */
   async getAuthenticatedIdentity(): Promise<RedditAccountIdentity | null> {
     try {
-      return await this.getRedditIdentity(await this.getPage());
+      const page = await this.getPage();
+      if (!isRedditPage(page.url())) {
+        await page.goto('https://www.reddit.com', {
+          waitUntil: 'domcontentloaded',
+          timeout: 30000,
+        });
+      }
+      return await this.getRedditIdentity(page);
     } catch {
       return null;
     }
@@ -212,3 +219,12 @@ export class BrowserClient {
   }
 
 }
+
+function isRedditPage(value: string): boolean {
+  try {
+    const hostname = new URL(value).hostname.toLowerCase();
+    return hostname === 'reddit.com' || hostname.endsWith('.reddit.com');
+  } catch {
+    return false;
+  }
+}

tests/browser-client.test.ts

@@ -42,7 +42,11 @@ describe('BrowserClient', () => {
       json: async () => ({ kind: 't2', data: { name: 'bot-account', id: 'abc123' } }),
     });
     vi.stubGlobal('fetch', fetchMock);
+    let pageUrl = 'about:blank';
+    const goto = vi.fn(async (url: string) => { pageUrl = url; });
     const page = {
+      url: () => pageUrl,
+      goto,
       evaluate: async (pageFunction: () => Promise<string | null>) => pageFunction(),
     } as unknown as Page;
     const context = { pages: () => [page] } as unknown as BrowserContext;
@@ -54,6 +58,11 @@ describe('BrowserClient', () => {
       username: 'bot-account',
       accountId: 't2_abc123',
     });
+    expect(goto).toHaveBeenCalledTimes(1);
+    expect(goto).toHaveBeenCalledWith('https://www.reddit.com', {
+      waitUntil: 'domcontentloaded',
+      timeout: 30000,
+    });
     expect(fetchMock).toHaveBeenCalledWith(
       'https://www.reddit.com/api/me.json',
       { credentials: 'include' },