Return whether a verified installation exists for a d-tag.
Insert or replace a record from an already resolver-verified pointer.
Return immutable serializable installed-artifact facts.
Return exact handler candidates derived only from installed manifests.
Subscribe to explicit install and artifact-removal changes.
Remove an artifact explicitly; frame teardown never calls this method.
Atomically confirm that a resolved target still belongs to the exact record selected before an async operation. The record object is the catalog version token, so even a same-identity replacement cannot pass this check.
Stores verified Paja installations separately from the browser runtime.
Example