Why: compiled-in plugins (generative-ui, rdm) never appeared in the admin
plugins list: GET /api/plugins only scanned the directory host, so binary-
level capabilities were invisible to operators (user-reported gap).
Evidence: go test ./internal/app/ ./internal/server/ green locally incl.
new TestApplyCompiledRecordsSummary and TestListPluginsMergesCompiled;
CI (make test) is authoritative.
Impact: applyCompiled records each plugin's registered commands/intents/
skills into a summary handed to the server; /api/plugins merges synthesized
inproc entries (backend.mode=inproc, apiVersion=extension surface version,
provides from the registration record). Directory entries win on id
collision. No public extension-surface change.
Refs: WP3-I4; task card feature-plugins-compiled-listing.
