From 72d17626dd94a3e22de396b48105e7579d53f771 Mon Sep 17 00:00:00 2001
From: Eunchurn Park <eunchurn.park@gmail.com>
Date: Fri, 26 Dec 2025 02:31:30 +0900
Subject: [PATCH] perf(home): use resize() instead of substr() for string
 truncation

---
 src/activities/home/HomeActivity.cpp | 5 +++--
 1 file changed, 3 insertions(+), 2 deletions(-)

diff --git a/src/activities/home/HomeActivity.cpp b/src/activities/home/HomeActivity.cpp
index 31b53e5..7c08cd7 100644
--- a/src/activities/home/HomeActivity.cpp
+++ b/src/activities/home/HomeActivity.cpp
@@ -121,11 +121,12 @@ void HomeActivity::render() const {
     }
     // Remove .epub extension
     if (bookName.length() > 5 && bookName.substr(bookName.length() - 5) == ".epub") {
-      bookName = bookName.substr(0, bookName.length() - 5);
+      bookName.resize(bookName.length() - 5);
     }
     // Truncate if too long
     if (bookName.length() > 25) {
-      bookName = bookName.substr(0, 22) + "...";
+      bookName.resize(22);
+      bookName += "...";
     }
     std::string continueLabel = "Continue: " + bookName;
     renderer.drawText(UI_FONT_ID, 20, menuY, continueLabel.c_str(), selectorIndex != menuIndex);