v2.3.0

Added

• Apermo.PHP.ExitUsage sniff: enforces exit() over
  die, die(), and bare exit. Auto-fixable.
• Apermo.NamingConventions.MinimumVariableNameLength
  sniff: warns on variable names shorter than 4 characters.
  Configurable allowlist with extend="true" support.
• SlevomatCodingStandard.Functions.StaticClosure: flags
  closures that do not use $this.
• SlevomatCodingStandard.Functions.RequireTrailingCommaInCall:
  requires trailing comma in multi-line function calls.
• SlevomatCodingStandard.Functions.FunctionLength: flags
  functions longer than 50 lines.
• SlevomatCodingStandard.Classes.ClassLength: flags
  classes longer than 500 lines.
• SlevomatCodingStandard.Complexity.Cognitive: flags
  overly complex methods (warning at 15, error at 30).
• SlevomatCodingStandard.Variables.UnusedVariable: flags
  unused local variables with foreach key-only exemption.
• SlevomatCodingStandard.Arrays.DisallowImplicitArrayCreation:
  flags appending to undefined variables.
• SlevomatCodingStandard.ControlStructures.RequireNullCoalesceOperator:
  flags isset() ternaries replaceable with ??.
• SlevomatCodingStandard.TypeHints.LongTypeHints: flags
  integer → int, boolean → bool in annotations.
• SlevomatCodingStandard.TypeHints.NullTypeHintOnLastPosition:
  flags null|string in favor of string|null.
• Universal.Operators.DisallowLogicalAndOr: flags and
  / or in favor of && / ||.
• Universal.ControlStructures.DisallowAlternativeSyntax:
  flags endif, endwhile, endfor, etc.
• Text domain validation: documented WordPress.WP.I18n
text_domain configuration in ruleset with integration
  test.