Stage 17 #5: make the active-row chevron open the game (not a no-op)

Owner review: the '>' on an active game row should be a real tap target that opens
the game, like the rest of the row — not inert. The chevron now navigates (kept out
of the tab order / a11y tree since the row's main button already does the same), and
active-row swipes no longer suppress the tap. Adds an e2e for the chevron navigation.

ui/e2e/social.spec.ts

@@ -107,6 +107,13 @@ test('lobby: hiding a finished game removes it (kebab → ❌), keeping the othe
   await expect(page.locator('.rowwrap', { hasText: 'Rick' })).toBeVisible();
 });
 
+test('lobby: the active-row chevron opens the game (not a no-op)', async ({ page }) => {
+  await loginLobby(page);
+  // The inert-looking '>' on an active row is a tap target that opens the game, like the row.
+  await page.locator('.rowwrap', { hasText: 'Ann' }).locator('.chev').click();
+  await expect(page.locator('[data-cell]').first()).toBeVisible();
+});
+
 test('lobby hamburger shows the pending notification count', async ({ page }) => {
   await loginLobby(page);
   // One incoming friend request (Rick) + one invitation (Kaya) = 2.