What problem does it solve? During workflow planning, the agent needs to know which models are actually installed on the local ComfyUI instance for a given capability, and what to do when none match. This Skill queries the live model registry and returns either a matching ModelHandle or a structured MissingModelEnvelope with sanctioned download candidates. ## Core Features & Use Cases - Capability-based model discovery: Wraps host.bridge.model_registry_client so the planner can ask which models are installed for a given capability before any comfyui_execute sub-goal runs. - Missing model handling: When no model matches, emits a MissingModelEnvelope containing approved download candidates from policies/model_sources.yaml instead of silently substituting. - Use Case: Before executing an image generation workflow, the planner calls this Skill with a capability like checkpoint loading; it receives a ModelHandle (capability, folder, name, matched_glob) or an envelope prompting a model_download sub-goal decision. ## Quick Start Ask the planner which installed ComfyUI models match a given capability before executing a workflow sub-goal.