Performance: Optimize extension activation event

- Changed activation from '*' to 'onStartupFinished'
- Significantly improves VSCode startup performance
- No longer blocks VSCode startup
- Maintains full functionality including auto-update on save
- Follows VSCode best practices for extension activation
- Bumped version to 0.42.15

🤖 Generated with [Claude Code](https://claude.com/claude-code)

Co-Authored-By: Claude <noreply@anthropic.com>

Author: ensui-dev

CHANGELOG.md

@@ -6,6 +6,15 @@ The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.0.0/).
 
 > **Note:** This is an enhanced fork of the [original 42 Header extension by kube](https://github.com/kube/vscode-42header).
 
+## [0.42.15] - 2025-10-11
+
+### Performance
+- **Activation Event Optimization**: Changed from `*` to `onStartupFinished`
+  - Significantly improves VSCode startup performance
+  - No longer blocks VSCode startup
+  - Still maintains full functionality including auto-update on save
+  - Follows VSCode best practices for extension activation
+
 ## [0.42.14] - 2025-10-11
 
 ### Security

package.json

@@ -2,7 +2,7 @@
   "name": "42header-plus",
   "displayName": "42 Header Plus (Enhanced)",
   "description": "Enhanced 42 header for VSCode with campus selection and customizable features",
-  "version": "0.42.14",
+  "version": "0.42.15",
   "publisher": "MarioLJFerreira",
   "icon": "42.png",
   "repository": {
@@ -37,7 +37,7 @@
     "theme": "dark"
   },
   "activationEvents": [
-    "*"
+    "onStartupFinished"
   ],
   "main": "./out/src/extension",
   "contributes": {