Adoption: Cellrix as reference TUI implementation

[Jasonmilk]

Summary

Cellrix adopts CIS v0.6.0 as its intent protocol, becoming the first reference TUI implementation.

Mapping

CIS Specification	Cellrix Implementation
§4 Intent Registry	cli/daemon/agent_routes.py — exposes intents via GET /v1/agent/snapshot
§4.3 Security / HITL	ActionInterceptor — blocks high-risk actions pending human approval
§5 Execution Lifecycle	cli/actions.py — validates, dispatches, returns deterministic responses
§6 Invocation	POST /v1/agent/action — accepts {"intent_id": "...", "parameters": {...}}

Status

Cellrix currently supports CIS intents through its Agent API. Intents are not yet loaded from the Manifest extensions field — this is planned for Phase 2.

Feedback

Implementation experience will be reported back to this repository as protocol refinement suggestions.