Improve stacktrace

[kfly8]

This pull request refactors the Result::Simple module to improve code readability and maintainability, enhances the pipeline function by assigning a subroutine name for better debugging, and updates the test suite to improve stack trace validation and coverage. Below are the most important changes grouped by theme:

Code Refactoring and Enhancements:

• Renamed variables in chain and pipeline functions for clarity ($f to $function, @f to @functions) and updated related logic to improve readability. (lib/Result/Simple.pm, lib/Result/Simple.pmL147-R174)
• Assigned a subroutine name (__PIPELINED_FUNCTION__) to the pipeline function using Sub::Util::set_subname for better debugging and stack trace clarity. (lib/Result/Simple.pm, lib/Result/Simple.pmL179-R194)

Test Suite Improvements:

• Enhanced stack trace validation in tests by splitting error messages into lines and adding more granular checks for function names and file references. (t/Result-Simple.t, [1] [2] [3]
• Added note statements in tests to provide additional debugging information about stack trace lines. (t/Result-Simple.t, [1] [2] [3]
• Updated tests to include dies for exception validation and improved consistency in stack trace checks for cases where CHECK_ENABLED is falsy. (t/check-disabled.t, [1] [2]

Minor Updates:

• Added note to the Test2::V0 imports in test files to enable additional debugging output. (t/Result-Simple.t, [1]; t/check-disabled.t, [2]

[coveralls]

Pull Request Test Coverage Report for Build 14546562354

Details

• 14 of 14 (100.0%) changed or added relevant lines in 1 file are covered.
• No unchanged relevant lines lost coverage.
• Overall coverage remained the same at 100.0%

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Totals
Change from base Build 14542955396:	0.0%
Covered Lines:	106
Relevant Lines:	106

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💛 - Coveralls

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• lib/Result/Simple.pm: Language not supported
• t/Result-Simple.t: Language not supported
• t/check-disabled.t: Language not supported