chore(release)!: prepare v2.0.0 with symfony/var-dumper 8

- Require symfony/var-dumper ^8.0 and PHP >=8.4
- Limit CI test matrix to PHP 8.4
- Document v2.0.0 breaking changes in CHANGELOG and README

BREAKING CHANGE: symfony/var-dumper ^6.0 and ^7.0 are no longer supported; minimum PHP is now 8.4.

Author: lemmon

.github/workflows/ci.yml

@@ -15,7 +15,7 @@ jobs:
     strategy:
       fail-fast: false
       matrix:
-        php: ['8.1', '8.2', '8.3', '8.4']
+        php: ['8.4']
 
     steps:
       - name: Checkout
@@ -34,8 +34,7 @@ jobs:
         # Resolve fresh per PHP version, runtime only. The dev tooling
         # (PHPUnit ^13) requires PHP 8.4+, so it is intentionally excluded
         # here. This still verifies the runtime constraint
-        # (symfony/var-dumper ^6.0 || ^7.0) is satisfiable across the whole
-        # supported range, e.g. ^6 on 8.1 and ^7 on 8.2+.
+        # (symfony/var-dumper ^8.0) is satisfiable on the supported PHP range.
         run: composer update --no-dev --prefer-dist --no-progress --no-interaction
 
       - name: Smoke test

CHANGELOG.md

@@ -1,5 +1,18 @@
 ## Unreleased
 
+## v2.0.0 - 2026-06-16
+
+[Compare v1.3.0...v2.0.0](https://github.com/lemmon/cl/compare/v1.3.0...v2.0.0)
+
+### Breaking Changes
+
+- Require `symfony/var-dumper` ^8.0 (drops support for ^6.0 and ^7.0).
+- Raise the minimum PHP version to 8.4 to match the `symfony/var-dumper` 8 requirement.
+
+### CI
+
+- Limit the test matrix to PHP 8.4, the new minimum supported version.
+
 ## v1.3.0 - 2026-06-15
 
 [Compare v1.2.0...v1.3.0](https://github.com/lemmon/cl/compare/v1.2.0...v1.3.0)

README.md

@@ -80,7 +80,7 @@ Run `composer test` to execute the PHPUnit suite and confirm the helper remains
 
 ## Requirements
 
-- PHP 8.1 or higher
+- PHP 8.4 or higher
 
 ## License
 

composer.json

@@ -20,8 +20,8 @@
     ],
     "homepage": "https://github.com/lemmon/cl",
     "require": {
-        "php": ">=8.1",
-        "symfony/var-dumper": "^6.0 || ^7.0"
+        "php": ">=8.4",
+        "symfony/var-dumper": "^8.0"
     },
     "require-dev": {
         "ergebnis/composer-normalize": "^2.48",