CommitDistill: A Lightweight Knowledge-Centric Memory Layer for Software Repositories

In three linesCommitDistill is an open-source Python prototype extracting typed knowledge units (Facts, Skills, Patterns) from local git history via deterministic regex and exposing them through a TF-IDF retriever. Tested on 5 repositories (25k commits), it achieves 0.750 hit-rate at 256-character budget versus 0.333 for BM25. No statistically detectable improvement on time-travel bug-fixes in LLM-as-judge evaluation.

Summary generated by Claude — human-verified