From 691ced6926f3a320bbf18afd740becfd47b50e79 Mon Sep 17 00:00:00 2001
From: "pulse-triage[bot]"
 <249995291+pulse-triage[bot]@users.noreply.github.com>
Date: Sun, 4 Oct 2026 12:05:19 +0100
Subject: [PATCH] Guard phone theme setup before the document root exists

Keep all browser error and geometry assertions; theme setup must tolerate the early WebKit init-script phase. The existing post-load dark-context assertion setup remains unchanged.

Change-source: pulse-maintainer
---
 frontend-modern/browser-tests/pbs-capacity.cjs | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/frontend-modern/browser-tests/pbs-capacity.cjs b/frontend-modern/browser-tests/pbs-capacity.cjs
index 5ba31895d6..68eba42afd 100644
--- a/frontend-modern/browser-tests/pbs-capacity.cjs
+++ b/frontend-modern/browser-tests/pbs-capacity.cjs
@@ -52,7 +52,7 @@ const runtime = [
           hasTouch: phone,
           colorScheme: phone ? 'dark' : 'light',
         });
-        if (phone) await page.addInitScript(() => document.documentElement.classList.add('dark'));
+        if (phone) await page.addInitScript(() => document.documentElement?.classList.add('dark'));
         page.setDefaultTimeout(20000);
         await page.clock.setFixedTime(new Date('2026-10-04T12:00:00Z'));
         const errors = [],