# Plugin-owned coding relay v1 `daemon_relay.py` is derived from langbot-plugin 0.6.0b5 `langbot_plugin/api/agent_tools/daemon.py`, upstream https://github.com/langbot-app/langbot-plugin-sdk (Apache-2.0). Original SHA-256: `140d1448666a1412777cd3e51a03ae2ce2ba48b3593b89484b581a1e202d7ad0`. Full upstream license: `LICENSE-sdk.txt`. Modified by LangBot plugin contributors: negotiated coding-relay-v1, socket ownership, serialized listener startup, shared token policy, cancellation acknowledgement/fencing, disconnect cleanup. No installed SDK is patched. Canonical source is ACP's pkg/daemon_relay.py; the other two copies must be byte-identical (enforced by certification-tests/test_coding_relay_v1.py).