GitNexus monorepo (CLI + web UI)

# Core docs (read first for any contribution)
- AGENTS.md — canonical agent instructions, GitNexus MCP tool reference
- GUARDRAILS.md — non-negotiables and escalation triggers

# Operational (read when running commands or debugging)
- RUNBOOK.md — copy-paste commands for common workflows
- TESTING.md — test commands for both packages
- CONTRIBUTING.md — contribution workflow and PR conventions

# Architecture (read for design context)
- ARCHITECTURE.md — system overview, data flow, component relationships

# Key directories
- gitnexus/ (CLI/core, MCP server — TypeScript)
- gitnexus-web/ (web UI — React/Vite/WASM)
- eval/ (SWE-bench evaluation harness — Python)
- gitnexus-claude-plugin/ (Claude marketplace config)
- gitnexus-cursor-integration/ (Cursor integration config)