obsidian-second-brain

Claude LTM stores project decisions in `.memory/DECISIONS.md`, with separate detail files for complex choices. Claude Code is instructed to read this memory at session start, update it when significant decisions are made, and compact the session before finishing. The plugin provides init, save, and compact commands without external services or hooks.

Repo Docs System builds a Chinese knowledge base around a codebase, including an AGENTS.md context map, an architecture overview, design documents, product specifications, execution plans, and a documentation coverage score. It is intended for both human maintainers and AI agents that need a reliable project map. Repeated runs update and extend the existing documentation rather than deleting prior content.

session-continuity keeps a project's memory in two committed Markdown files: a current-state SESSION_PRIMER and an append-only LEARNINGS log. Slash commands refresh the primer, record hard-won lessons, and close a session, while hooks surface stale context or missing checks. The approach stays portable and human-readable instead of relying on a hosted memory service.

karpathy-llm-wiki turns incoming sources into durable, cross-linked Markdown pages instead of reprocessing raw documents for every question. Its ingest, query, and lint operations update the wiki, answer from existing pages with citations, and check link or index health. It follows the Agent Skills standard for use across several coding agents.