`apm marketplace package add` rejects a local path — it registers a remote
package reference — but the agent routed local-package registration to it, so
that dispatch could only fail. Local registration is a manifest edit and now
routes to `edit-config`.
The agent also carried its own copy of the `type:` guidance and a numbered
workflow that restated the dispatch procedure below it; both drift from
apm-workflow independently. `type:` correctness is delegated where it belongs,
and the description is rewritten to a trigger plus the apm-install boundary
rather than a restatement of the body.
Addresses #120.