chore: bump version to 1.0.3

- Enhanced README with Testing section
- Added test execution instructions and coverage statistics
- Documented CI/CD workflow

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

Co-Authored-By: Claude Sonnet 4.5 <noreply@anthropic.com>

Author: km-kwon

CHANGELOG.md

@@ -4,6 +4,15 @@ 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).
 
+## [1.0.3] - 2025-12-26
+
+### Changed
+- Enhanced README documentation with comprehensive Testing section
+  - Added detailed test execution instructions
+  - Documented test coverage statistics (108 tests across 3 test suites)
+  - Added CI/CD workflow information
+  - Included links to coverage reports and CI configuration
+
 ## [1.0.2] - 2025-12-24
 
 ### Added

package.json

@@ -1,6 +1,6 @@
 {
   "name": "circular-queue-react",
-  "version": "1.0.2",
+  "version": "1.0.3",
   "description": "High-performance circular buffer/queue for TypeScript and React - Perfect for logs, streaming data, and real-time updates",
   "main": "dist/index.js",
   "module": "dist/esm/index.js",