"""legal-chat-service — host-side SSE bridge to ``claude`` CLI.

Runs as a pm2-managed process on the host (port 127.0.0.1:8770 by default).
The legal-ai FastAPI container proxies chat requests to it via
``host.docker.internal:8770``.

Why a separate service:
    The chat needs real-time streaming + multi-turn session continuation
    (``claude --resume <session_id>``). The container can't run the
    claude CLI (no binary, no claude.ai credentials). Splitting this out
    keeps the architectural rule of ``claude_session.py`` intact while
    enabling the new chat feature for free (no API key).
"""