Scope

Factor tool, MCP, skill, provider, model, config, preview, and dependency-probe flows around shared adapter contracts instead of scattered command-specific logic.

Acceptance

• Tool studio commands share validate/preview/apply/result receipt vocabulary.
• Registry adapters own schema compatibility, strict-mode adaptation, dependency probes, and preview metadata.
• Provider/config commands report persistence target and live-engine sync through shared helpers.
• Tests cover at least one native tool, one MCP/skill/provider-style adapter, and one failed dependency probe.