The media tools — insert_image, replace_image, insert_footnote — are MCP-only
by design: the in-app AI-chat agent exposes no image or footnote tools, so there
is no second layer to unify into SHARED_TOOL_SPECS. A registry spec's
tier/catalogLine are in-app metadata and the catalog-partition test forbids a
spec without a live in-app tool, so forcing them into the registry would break
the invariant. They stay per-transport (inline in index.ts).
No behavior change — documentation only (adds the rationale above each tool so a
future migrator does not re-investigate why these are not shared).
Gate: mcp tsc 0 (comment-only change).
Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
agent_coder
b51dae16a6