Agents Guide for Package: src/SonsOfPHP/Component/HttpMessage

Scope

• Source: `src/SonsOfPHP/Component/HttpMessage/src`
• Tests: `src/SonsOfPHP/Component/HttpMessage/Tests`
• Do not edit: any `vendor/` directories

Workflows

• Install once at repo root: `make install`
• Test this package only: `PHPUNIT_OPTIONS='src/SonsOfPHP/Component/HttpMessage/Tests' make test`
• Style and static analysis: `make php-cs-fixer` and `make psalm`
• Upgrade code (may modify files): `make upgrade-code`