chore: release v0.2.15

- Bump version to 0.2.15
- Update CHANGELOG with changes since v0.2.14
- Sync package-lock.json version

Change-Id: I917c36498ea32639b8af6727a5b0425b87248e75
Co-developed-by: Cursor <noreply@cursor.com>

Author: jiangxin

CHANGELOG.md

@@ -5,6 +5,35 @@ All notable changes to this project will be documented in this file.
 The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.0.0/),
 and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0.html).
 
+## [0.2.15] - 2026-02-24
+
+### Added
+
+- Add file-based cache for auto-upgrade version checks
+  - Use XDG_CACHE_HOME on Linux/macOS, LOCALAPPDATA on Windows
+  - Respect check interval (1 hour default) to avoid frequent npm requests
+- Add 6 test cases to protect auto-upgrade flow
+
+### Changed
+
+- Replace update-notifier with direct latestVersion for reliable auto-upgrade
+  - update-notifier spawns async detached process; notifier.update never populated in same run
+  - Use latestVersion() for synchronous fetch within the same process
+- Change default update check interval from 8 hours to 1 hour
+- Use npm install -g @latest instead of npm update -g to force latest version
+  - npm update may report "up to date" without actually upgrading
+
+### Fixed
+
+- Fix auto-upgrade updating wrong installation (global vs local node_modules)
+  - Detect if running from project's node_modules; update the correct installation
+  - Add cwd when spawning local npm install for project updates
+- Fix "version still old" after upgrade when running from local project
+
+### Removed
+
+- Remove update-notifier and @types/update-notifier dependencies
+
 ## [0.2.14] - 2026-03-16
 
 ### Added

package-lock.json

@@ -1,6 +1,6 @@
 {
   "name": "@ai-coding-workshop/commit-msg",
-  "version": "0.2.14",
+  "version": "0.2.15",
   "type": "module",
   "main": "dist/index.js",
   "bin": {