Greptile Summary

This PR rolls back code coverage thresholds in the CI system by reducing three coverage requirements in the coverage.sh script. The changes lower COVERAGE_FUNCTIONS from 64% to 63%, COVERAGE_LINES from 64% to 60%, and COVERAGE_REGIONS from 63% to 58%.

The coverage.sh script is part of the CI/CD pipeline that validates code coverage using cargo llvm-cov for the Rust codebase. These environment variables define minimum coverage thresholds that must be met for the coverage checks to pass. When the cmd_check function runs, it compares actual coverage statistics from report.json against these thresholds and fails the build if coverage falls below the required levels.

Based on the PR title "ci: rollback coverage by mistake", this appears to be reverting an accidental increase in coverage requirements that was likely causing CI failures. The original higher thresholds (64%, 64%, 63%) were probably too strict for the current state of the codebase, preventing successful builds and merges. By rolling back to the previous values (63%, 60%, 58%), the CI system can function properly while still maintaining reasonable coverage standards.

Confidence score: 5/5

• This PR is safe to merge with minimal risk as it only adjusts CI configuration values
• Score reflects the straightforward nature of reverting configuration changes that were causing CI issues
• No files require special attention as this is a simple rollback of coverage thresholds

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