CodexA：功能、适用场景与来源

Developer Intelligence Engine — semantic code search, AI-assisted understanding, and workspace tooling 主要功能：Per-model vector subdirectories for multi-model index support、Vim -- Vimscript plugin with quickfix integration (Planned)、Thread-safe SessionManager for concurrent AI agent sessions with TTL cleanup、Bridge session endpoints: /sessions, /sessions/create, /sessions/close、39 CLI commands, 13 AI agent tools, 22 plugin hooks。