v2.7.6

This release makes mutation locations more accurate and adds local tools for safer development.

Fixed

• Reports, coverage, per-test runs, and --git-diff-lines now use the original source position.
• Diff parsing now handles pure additions and malformed input safely.
• Statement and branch mutators no longer produce invalid Go in several edge cases.

Changed

• The mutation engine was split into a focused internal package and its coupling was reduced.

Added

• Agent skills, Serena project memories, and opt-in git hooks that mirror CI checks.

go test ./... is green. The mutation score is 81.96%, and the covered-code score is 87.57%.