# Destination Sub-flows Per-destination mechanics for Phase 6. The menu itself and the one-line action per option live inline in SKILL.md — this file carries only the elaborate sub-flows. Detection is by capability: probe the current session's tools and context; a missing binary, env var, or unloaded MCP tool is not proof of absence when a connector could supply the capability. Local file is the always-present floor. ## Artifact surface Offered when an artifact-publishing tool is present in the session's toolset. Artifact surfaces wrap published content in their own document skeleton (doctype, head, body) and enforce a CSP that blocks requests to external hosts. Publishing the run-dir file verbatim would nest a full HTML document inside theirs and break on any external reference. So: 1. Re-emit the explainer as **body-only markup**: strip the doctype/``/``/`` shell; keep the content elements. 2. Keep all CSS inline (a `