fix: update PHPCS to 4.0 and add line length ignore for DefaultConfig

[ricardofiorani]

Summary

• Update squizlabs/php_codesniffer from ^3.11 to ^4.0
• Replace @codingStandardsIgnoreFile docblock with inline phpcs:disable comment for Generic.Files.LineLength.TooLong to fix PHPCS 4.0 compatibility

Test plan

• Run vendor/bin/phpcs --standard=psr2 src/ and verify no errors/warnings

[gemini-code-assist]

Code Review

This pull request updates the squizlabs/php_codesniffer dependency and replaces a file-level coding standards ignore tag with a specific line-length disable comment in DefaultConfig.php. Feedback indicates that the specified version of php_codesniffer is not available on Packagist, which will cause installation failures, and the placement of the new comment violates PSR-12 by preceding the declare statement.

[gemini-code-assist]

The package squizlabs/php_codesniffer does not currently have a version 4.0 available on Packagist. The latest stable version is 3.11.x. Attempting to require ^4.0 will result in a composer error during installation or update as no matching version will be found. If you intended to use the community-maintained version, please note that it still follows the 3.x series or check if you meant a different package.

[gemini-code-assist]

Placing a comment before the declare(strict_types=1); statement violates PSR-12, which expects the declare statement to be the first statement in the file header (after the opening tag and optional file-level docblock). Moving the phpcs:disable comment after the declare statement ensures compliance with the style guide while still achieving the goal of ignoring line length violations for the large JSON string below.

declare(strict_types=1);

// phpcs:disable Generic.Files.LineLength.TooLong

References

1. PSR-12 Section 3: The header of a PHP file MUST consist of: The opening <?php tag. The file-level docblock (optional). One or more declare statements. ^(link)