PHPStan level 6 compliance

[somethingwithproof]

Goal

Bring plugin_mactrack to PHPStan level 6 with zero errors.

What level 6 checks (cumulative with 0–5)

• Level 6: Checking types of arguments passed to methods and functions
• Level 5: Report missing type hints on methods and properties
• Level 4: Report partially wrong union types
• Level 3: Report calling methods and accessing properties on nullable types
• Levels 0–2: Basic checks, mixed type strictness, etc.

Tasks

• Add PHPStan to composer.json (require-dev) if not present
• Add phpstan.neon or phpstan.neon.dist with level: 6
• Run vendor/bin/phpstan analyse -l 6 and fix all reported errors
• Add type hints to parameters and return types where missing
• Fix argument type mismatches
• Add to CI (e.g., composer run phpstan or similar)

Reference

• PHPStan Rule Levels

Related

• PHP 8+ modernization (grouped) #304 PHP 8+ modernization (grouped)
• PHPStan level 8 compliance #312 PHPStan level 8 compliance