markmdev/meridian

Implements Claude Code as a Claude plugin with lifecycle hooks that inject persistent workspace context at session start, pre-compaction, and task completion, while routing project docs via frontmatter metadata to keep relevant guidance in scope. The architecture separates plugin-managed runtime (hooks, agents, commands) from repo-scoped scaffolding (`.meridian/` with WORKSPACE.md, structured docs, and session learner) that persists across compaction and worktrees, with ephemeral state isolated to `~/.meridian/state/` per workspace hash. Targets multi-hour implementation work in medium-to-large repos where context loss and instruction drift are costly, integrating with existing `CLAUDE.md` guidance files without requiring workflow changes.

143 stars.