fix(quality): reduce overall complexity of git functions

[mcarvin8]

No description provided.

[codecov-commenter]

Codecov Report

❌ Patch coverage is 98.42271% with 5 lines in your changes missing coverage. Please review.

Files with missing lines	Patch %	Lines
src/ai/openAIConfig.ts	91.30%	1 Missing and 1 partial ⚠️
src/git/diffGitStatus.ts	90.00%	1 Missing ⚠️
src/git/diffNameStatusParse.ts	97.43%	1 Missing ⚠️
src/git/diffPathspecs.ts	97.22%	1 Missing ⚠️

Files with missing lines	Coverage Δ
src/ai/aiSummary.ts	100.00% <100.00%> (ø)
src/git/commitMessageFilter.ts	100.00% <100.00%> (ø)
src/git/diffNumstatParse.ts	100.00% <100.00%> (ø)
src/git/diffSummaryBuild.ts	100.00% <100.00%> (ø)
src/git/diffSummaryParse.ts	100.00% <100.00%> (ø)
src/git/gitDiff.ts	100.00% <100.00%> (+0.90%)	⬆️
src/git/gitDiffOps.ts	100.00% <100.00%> (ø)
src/git/diffGitStatus.ts	90.00% <90.00%> (ø)
src/git/diffNameStatusParse.ts	97.43% <97.43%> (ø)
src/git/diffPathspecs.ts	97.22% <97.22%> (ø)
... and 1 more

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