feat(mcp): .mcp.json with context7 and svelte on request

README.md

@@ -11,6 +11,8 @@ A part is a directory with:
 
 Application services carry the `services` profile, databases and other infrastructure carry `external`.
 
+`mcp_servers` writes `.mcp.json` with the Context7 and Svelte docs servers.
+
 The root also gets a `renovate.jsonc` that is nothing but an `extends` on the
 shared preset in `templates/renovate`. It does not subscribe the repo to
 anything on its own: the bot walks an explicit list, so a new repo still has to