Update CHANGELOG for v2.0.0

Author: tanhongit

CHANGELOG.md

@@ -2,6 +2,59 @@
 
 Here you can see the full list of changes between each GitHub Project PHP package release.
 
+## v2.0.0 - 2026-03-03
+
+### 🚀 Major Release - PHP 8.4+ & Modern Architecture
+
+### ✨ New Features
+
+- **API Endpoint**: New `GenerateCommentAction` to generate comment messages via REST API
+- **Route Names**: All routes now have named routes for better maintainability
+
+### 🔧 Improvements
+
+- **PHP Version**: Upgraded to PHP ^8.4
+- **Strict Types**: Added `declare(strict_types=1)` to all PHP files
+- **Constructor Property Promotion**: All classes use modern PHP 8.4 syntax with `readonly`
+- **Strict Comparisons**: All loose `==`/`!=` replaced with strict `===`/`!==`
+- **Removed `empty()`**: Replaced with explicit null/empty-string checks
+- **Dependency Injection**: Improved DI in `ProcessAggregatedEvents` job
+- **Simplified ServiceProvider**: Using `mergeConfigFrom()` instead of manual scandir loop
+
+### 🐛 Bug Fixes
+
+- Fixed ServiceProvider namespace (`CSlant\GithubProject` → `CSlant\GitHubProject`)
+- Fixed double `validatePayloadForComment()` call in `WebhookService`
+- Fixed lang file copy-paste errors
+- Removed redundant `Cache::forget()` after `Cache::pull()`
+- Removed dead `array_map` identity function in `aggregateMessages()`
+
+### 🔒 Security
+
+- Removed stack trace/file/line leak in `GenerateCommentAction` error response
+
+### 🧹 Code Cleanup
+
+- Removed empty `registerCommands()` method
+- Removed empty `Constants/` and `Http/` directories
+- Fixed `provides()` return type annotation
+- Cleaned up PHPStan baseline (removed overly broad wildcards)
+- Net: -133 lines removed
+
+### 💥 Breaking Changes
+
+- PHP `^8.4` now required
+- Namespace corrected from `CSlant\GithubProject` to `CSlant\GitHubProject`
+
+### 📦 Dependencies Updated
+
+- `orchestra/testbench`: ^10.0
+- `pestphp/pest`: ^4.0
+- `nunomaduro/larastan`: ^3.9
+- `phpstan/phpstan`: ^2.0
+
+**Full Changelog**: https://github.com/cslant/github-project-php/compare/v1.2.0...v2.0.0
+
 ## v1.2.0 - 2025-07-06
 
 ### What's Changed