The operator brain was Claude-only: spawn launched the claude CLI and let its
own loop drive the room. This adds the other first-class brain — a native
tool-calling loop (cmd_chat/operator/harness.py) that runs ANY function-calling
Provider (cmd_chat.ai) against an OPERATOR_TOOLS schema wired to the existing
bridge control verbs (say/exec/write/get/keys/screen/watch/manifest). No CLI
install, no creds carry.
The harness is a driver, not a new side-effect surface: every tool handler sends
the same control-socket request the hh-bridge CLI already sends, so the bridge
keeps enforcing grant-before-drive, the sandbox blast radius, and the recursion
budget. Layer-1 capabilities come from CAPABILITIES.md (the same portable
contract), and a per-agent token ceiling is enforced as a hard stop. Providers
that can't function-call are refused with a clear message rather than degrading
to prose.
New `operate` verb joins via the existing daemon socket and runs the loop with a
--profile or --provider/--model brain. Chat's native loop is left untouched
(self-contained harness over the shared Provider core, not a risky extraction).
Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>