- Host Agent now defaults AI_PLANNER_ENABLED=true (opt-out via env),
scoped to apps/device-host-agent/host_agent/execution.py only; the
shared runtime.planner_config default (disabled) is unchanged.
- Add openspec proposal for cloud-planner-proxy: centralize LLM
provider config/credentials on the Cloud Control Plane and let the
Host Agent proxy AI Planner decisions through it instead of holding
provider API keys locally. Proposal only, no implementation yet.
