The problem

Standard git blame often points to a formatter or a minor refactor rather than the original intent. Developers struggle to reconstruct the "why" behind legacy code or pinpoint exactly when a regression was introduced across a deep commit history.

What it does

• Performs forensic analysis of git logs to trace the evolution of specific files or behaviors.
• Triangulates regressions using automated git bisect workflows and test suite execution.
• Identifies the original intent of changes by following renames and searching for specific string introductions.
• Produces chronological timelines that summarize code evolution from birth to its current state.
• Generates evidence-backed action plans for reverting or maintaining specific logic.

Why this beats prompting it yourself

Manually running git log and bisect is tedious and error-prone. This skill automates the triangulation process, correctly handles file renames that break standard tools, and deduces developer intent from diff patterns when commit messages are sparse.

Use cases

• Identify the specific commit that broke a feature and determine a revert strategy.
• Onboard to a complex legacy module by generating a timeline of its major architectural shifts.
• Audit code changes to find the original PR or issue reference for a specific line of code.
• Prepare detailed release notes by reconstructing the narrative of changes over a specific range.