[ashwingopalsamy]

Reasons for making this change

coverage.* (added in #4565, my PR) is too broad. #4776 patched one case with !coverage.go, but the glob still silently ignores files that belong in a Go repo:

File	Ignored today	Impact
api/coverage.pb.go, api/coverage.proto	yes	builds locally, CI fails (same failure mode #4776 reported)
.github/workflows/coverage.yml	yes	CI workflow never gets committed
scripts/coverage.sh, coverage.md	yes	scripts/docs silently dropped

Verified with git check-ignore -v against current main.

This replaces the glob (and the !coverage.go exception) with the coverage artifacts Go tooling actually writes:

• coverage.out → already covered by *.out
• coverage.txt → Codecov's Go convention
• coverage.html → go tool cover -html=… -o coverage.html
• coverage.xml → gocover-cobertura output
• *.coverprofile, profile.cov → unchanged

Trade-off: a coverage file with an unusual name now shows up in git status (visible, easy to add locally) instead of source/config files disappearing silently.

Links to documentation supporting these rule changes

• https://pkg.go.dev/cmd/cover
• https://github.com/codecov/example-go
• https://github.com/boumenot/gocover-cobertura
• Reports on feat(go.gitignore): Add code coverage and IDE files #4565: feat(go.gitignore): Add code coverage and IDE files #4565 (comment), feat(go.gitignore): Add code coverage and IDE files #4565 (comment)

If this is a new template

N/A, this changes an existing template.

Merge and Approval Steps

• Confirm that you've read the contribution guidelines and ensured your PR aligns
• Ensure CI is passing
• Get a review and Approval from one of the maintainers