deja-vu indexes the coding-agent session logs already sitting on your disk.

vshulcz/deja-vu (612 stars, created July 14) takes a different angle than the retain/recall memory systems: it indexes transcripts your agents already wrote, turning months of history into a searchable store on the premise that "your agents already solved this." Ships as an MCP server, so any harness that speaks MCP can query it without adopting a new memory framework or re-ingesting anything. For anyone running agents daily this is the cheapest possible memory layer, because the corpus already exists locally and cost nothing to produce. I have three years of these files. So do you, probably.