From df18123e7da3b682eed811c0e01c94a44dc2c29c Mon Sep 17 00:00:00 2001
From: "pulse-triage[bot]"
 <249995291+pulse-triage[bot]@users.noreply.github.com>
Date: Fri, 2 Oct 2026 16:53:57 +0100
Subject: [PATCH] Align History guardrails and record valid UTC browser proof

A fresh two-engine browser pass verifies the unchanged runtime source. Update the cross-surface empty-state assertions to the truthful copy.

Contract-Neutral: Verification and receipt corrections only; runtime source and subsystem contracts are unchanged.
Change-source: pulse-maintainer
---
 frontend-modern/browser-verification.json                     | 4 ++--
 .../src/components/shared/SharedPrimitives.guardrails.test.ts | 3 ++-
 .../utils/__tests__/frontendResourceTypeBoundaries.test.ts    | 3 ++-
 3 files changed, 6 insertions(+), 4 deletions(-)

diff --git a/frontend-modern/browser-verification.json b/frontend-modern/browser-verification.json
index f9f7e62f7e..bd379e2ebb 100644
--- a/frontend-modern/browser-verification.json
+++ b/frontend-modern/browser-verification.json
@@ -1,7 +1,7 @@
 {
   "version": 1,
-  "base_sha": "65a36dd4e7a83e682b9dadc4bb624d79fcb10546",
-  "verified_at": "2026-10-02T15:52:23.739120+00:00",
+  "base_sha": "c6edeee869a11f9206390e855fc63da744fb394a",
+  "verified_at": "2026-10-02T15:53:54.725571Z",
   "result": "passed",
   "changed_paths": [
     "frontend-modern/src/components/shared/HistoryChart.tsx",
diff --git a/frontend-modern/src/components/shared/SharedPrimitives.guardrails.test.ts b/frontend-modern/src/components/shared/SharedPrimitives.guardrails.test.ts
index 1325a4260f..95c9485247 100644
--- a/frontend-modern/src/components/shared/SharedPrimitives.guardrails.test.ts
+++ b/frontend-modern/src/components/shared/SharedPrimitives.guardrails.test.ts
@@ -5283,7 +5283,8 @@ describe('shared primitive guardrails', () => {
     expect(historyChartHeaderSource).not.toContain('ChartsAPI.getMetricsHistory');
     expect(historyChartHeaderSource).not.toContain('setupCanvasDPR');
 
-    expect(historyChartOverlaySource).toContain('Collecting data... History will appear here.');
+    expect(historyChartOverlaySource).toContain('No history samples in this time range.');
+    expect(historyChartOverlaySource).not.toContain('History will appear here.');
     expect(historyChartOverlaySource).toContain(
       'Historical data beyond {props.chart.lockDays()} days requires a higher license plan.',
     );
diff --git a/frontend-modern/src/utils/__tests__/frontendResourceTypeBoundaries.test.ts b/frontend-modern/src/utils/__tests__/frontendResourceTypeBoundaries.test.ts
index 35e2debb92..9dfa485452 100644
--- a/frontend-modern/src/utils/__tests__/frontendResourceTypeBoundaries.test.ts
+++ b/frontend-modern/src/utils/__tests__/frontendResourceTypeBoundaries.test.ts
@@ -2452,7 +2452,8 @@ describe('frontend resource type boundaries', () => {
     expect(historyChartModelSource).toContain('HISTORY_CHART_RANGES');
     expect(historyChartModelSource).toContain('getHistoryChartScale');
     expect(historyChartHeaderSource).toContain('formatHistoryChartTooltipValue');
-    expect(historyChartOverlaySource).toContain('Collecting data... History will appear here.');
+    expect(historyChartOverlaySource).toContain('No history samples in this time range.');
+    expect(historyChartOverlaySource).not.toContain('History will appear here.');
     expect(historyChartOverlaySource).not.toContain('presentationPolicyHidesUpgradePrompts');
     expect(historyChartOverlaySource).not.toContain(
       'Unlock {props.chart.lockTierLabel()} Features',