🔧 Upgrade dependencies and framework components

- ✨ Update `composer.lock` and `.junie/guidelines.md` to include new versions for Pest v4, PHPUnit v12, Laravel framework (v12.51.0), and other dependencies.
- 📚 Add Pest v4 specific rules for browser testing, smoke testing, and visual regression tests to documentation.
- 🛠 Refactor related configs for upgraded dependency compatibility, ensuring cleaner and faster development debugging.

composer.json

@@ -44,8 +44,8 @@
         "laravel/pint": "^1.13",
         "mockery/mockery": "^1.6",
         "nunomaduro/collision": "^8.8.2",
-        "pestphp/pest": "^3.0",
-        "pestphp/pest-plugin-laravel": "^3.0"
+        "pestphp/pest": "^4.3",
+        "pestphp/pest-plugin-laravel": "^4.0"
     },
     "autoload": {
         "psr-4": {