Add Path.AreEqual static extension method

[Copilot]

Adds a Path.AreEqual static extension method for comparing two paths for equality, which was missing from the PathExtensions class.

Changes

• PathExtensions.cs — new Path.AreEqual(string?, string?) method that:
  • Normalizes both paths via Path.GetFullPath + Path.TrimEndingDirectorySeparator (handles ./.. segments and trailing separators)
  • Uses OrdinalIgnoreCase on Windows, Ordinal elsewhere
  • Handles null inputs (both null → true, one null → false)
• PathExtensionsTests.cs — tests covering null handling, trailing slashes, and path normalization

Example

Path.AreEqual("/foo/bar/", "/foo/bar")          // true
Path.AreEqual("/foo/./baz/../bar", "/foo/bar")  // true
Path.AreEqual("/foo/bar", "/foo/baz")           // false
Path.AreEqual(null, null)                       // true

[Copilot]

Pull request overview

This PR adds a Path.AreEqual(string?, string?) static extension member to the existing PathExtensions extension block, providing a normalized, OS-aware path equality check (case-insensitive on Windows, case-sensitive elsewhere), and introduces unit tests for the new API.

Changes:

• Added Path.AreEqual(string?, string?) that normalizes inputs via Path.GetFullPath + Path.TrimEndingDirectorySeparator before comparing.
• Added unit tests for null handling and basic normalization cases (trailing separators, . / .. segments).

Reviewed changes

Copilot reviewed 2 out of 2 changed files in this pull request and generated 1 comment.

File	Description
PowerKit/Extensions/PathExtensions.cs	Adds Path.AreEqual implementation with normalization + OS-specific string comparison.
PowerKit.Tests/Extensions/PathExtensionsTests.cs	Adds tests for the new Path.AreEqual API behavior.

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[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 86.35%. Comparing base (914841c) to head (1ceaa6b).

Additional details and impacted files

@@            Coverage Diff             @@
##            prime      #88      +/-   ##
==========================================
+ Coverage   86.25%   86.35%   +0.09%     
==========================================
  Files          74       74              
  Lines        1244     1253       +9     
  Branches      231      234       +3     
==========================================
+ Hits         1073     1082       +9     
  Misses        121      121              
  Partials       50       50              

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