[TomasVotruba]

Lower the minimum PHP from 8.4 to 7.4, so the package can run on legacy projects. The source is natively downgraded (the same approach as rectorphp/swiss-knife#153), no PHAR/scoper build.

Source downgrade (src + packages/type-perfect/src)

Produced with Rector downgrade sets (withDowngradeSets(php74: true)), then committed:

• readonly properties/classes to @readonly docblocks
• constructor promotion expanded to explicit properties + assignments
• typed class constants to untyped
• str_contains() rewritten to strpos()
• union return/param types moved from native declarations to docblocks

rector.php keeps withPhpSets(), which now resolves to 7.4 from composer.json, so the source stays at this level.

composer.json

• require.php: ^8.4 to >=7.4 (phpstan/phpstan ^2.2 and webmozart/assert ^1.11 both support 7.4)

Self type-coverage thresholds (phpstan.neon)

The package measures its own type coverage. On 7.4, native union types and typed constants are impossible, so the strict thresholds are no longer reachable:

• return_type 99.9 to 96, param_type 100 to 99, constant_type 100 to 0
• removed the smaller.alwaysFalse ignore (the PHP_VERSION_ID < 80300 guards are real branches now, not always-false)

CI

• added bare_run.yaml: lints the source and installs prod deps on PHP 7.4, 8.2, 8.5
• removed various_php_install.yaml (its 7.2 target is below the new minimum; bare_run validates the actual branch source instead)

Docs

• README: "PHP 7.2+" to "PHP 7.4+"

Checks pass locally: PHPStan, ECS, Rector (stable at 7.4), composer-dependency-analyser, 88 tests.