Rename ObserveException to Catch

[Copilot]

Renames TaskExtensions.ObserveException() to Catch(). The old name is retained as an [Obsolete] redirect for backward compatibility.

Changes

• TaskExtensions.cs: Catch() carries the implementation; ObserveException() becomes a one-liner delegate marked [Obsolete("Use Catch() instead.")]
• TaskExtensionsTests.cs: Test methods updated to exercise Catch()

Usage

// Before
_ = task.ObserveException(); // now obsolete

// After
_ = task.Catch();

[codecov]

Codecov Report

❌ Patch coverage is 0% with 1 line in your changes missing coverage. Please review.
✅ Project coverage is 86.46%. Comparing base (314fff9) to head (cec915b).

Files with missing lines	Patch %	Lines
PowerKit/Extensions/TaskExtensions.cs	0.00%	1 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##            prime      #96      +/-   ##
==========================================
+ Coverage   86.24%   86.46%   +0.22%     
==========================================
  Files          78       78              
  Lines        1410     1411       +1     
  Branches      243      243              
==========================================
+ Hits         1216     1220       +4     
+ Misses        140      138       -2     
+ Partials       54       53       -1     

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[Copilot]

Pull request overview

Renames the Task extension method ObserveException() to Catch() while preserving backward compatibility via an [Obsolete] forwarding wrapper, and updates tests to target the new API name.

Changes:

• Introduced Catch() as the primary implementation for observing/suppressing unobserved task exceptions.
• Converted ObserveException() into an [Obsolete("Use Catch() instead.")] one-liner delegate to Catch().
• Updated TaskExtensionsTests to use Catch() and renamed test methods accordingly.

Reviewed changes

Copilot reviewed 2 out of 2 changed files in this pull request and generated no comments.

File	Description
PowerKit/Extensions/TaskExtensions.cs	Adds Catch() implementation and marks ObserveException() obsolete as a redirect.
PowerKit.Tests/Extensions/TaskExtensionsTests.cs	Updates tests to call Catch() and renames test methods to match the new API.

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