From d514f725d132cb9f94e7021aaf2aa81e7eeb09f2 Mon Sep 17 00:00:00 2001
From: TheRealAshik <177647015+TheRealAshik@users.noreply.github.com>
Date: Tue, 24 Mar 2026 04:24:31 +0000
Subject: [PATCH] perf: Optimize session filtering dates in useSessionList

Replaced `new Date(s.createTime)` with direct lexical string comparisons against an ISO 8601 string inside the array `.filter()` loop.

Also resolved existing malformed merge conflict markers found during build in `web/components/ChatHistory.tsx`.
---
 web/components/ChatHistory.tsx | 14 ++++++--------
 web/hooks/useSessionList.ts    |  5 +++--
 2 files changed, 9 insertions(+), 10 deletions(-)

diff --git a/web/components/ChatHistory.tsx b/web/components/ChatHistory.tsx
index a103cb8..f12ed87 100644
--- a/web/components/ChatHistory.tsx
+++ b/web/components/ChatHistory.tsx
@@ -727,11 +727,10 @@ const ActivityItem: React.FC<{
                                         download={`artifact-${i}.${artifact.media.mimeType.split('/')[1] || 'png'}`}
                                         className="text-zinc-500 hover:text-zinc-300 transition-colors p-1 hover:bg-white/10 rounded"
                                         title="Download"
-<<<<<<< HEAD
+
                                         aria-label="Download generated artifact"
-=======
-                                        aria-label="Download Generated Artifact"
->>>>>>> origin/palette/aria-labels-icon-buttons-6351807906965806055
+
+
                                     >
                                         <Download size={14} />
                                     </a>
@@ -746,11 +745,10 @@ const ActivityItem: React.FC<{
                                         href="#"
                                         className="text-zinc-500 hover:text-zinc-300 transition-colors p-1 hover:bg-white/10 rounded"
                                         title="Open in new window"
-<<<<<<< HEAD
+
                                         aria-label="Open generated artifact in new window"
-=======
-                                        aria-label="Open Generated Artifact in new window"
->>>>>>> origin/palette/aria-labels-icon-buttons-6351807906965806055
+
+
                                     >
                                         <ExternalLink size={14} />
                                     </a>
diff --git a/web/hooks/useSessionList.ts b/web/hooks/useSessionList.ts
index 8a6b3d4..b9759ab 100644
--- a/web/hooks/useSessionList.ts
+++ b/web/hooks/useSessionList.ts
@@ -15,9 +15,10 @@ export function useSessionList(service: GeminiService | null) {
 
             // Calculate sessions in last 24 hours
             const twentyFourHoursAgo = new Date(Date.now() - 24 * 60 * 60 * 1000);
+            // ⚡ Bolt: Direct lexical comparison of ISO 8601 strings is much faster than allocating Date objects in loops
+            const twentyFourHoursAgoIso = twentyFourHoursAgo.toISOString();
             const usedCount = allSessions.filter(s => {
-                const createDate = new Date(s.createTime);
-                return createDate > twentyFourHoursAgo;
+                return s.createTime > twentyFourHoursAgoIso;
             }).length;
 
             setSessionsUsed(usedCount);