Three packages (api, reconciler, webhook) each carried a private 30-line
toPluginWorkload() copy that had drifted — only the api version logged
malformed public_faces JSON; the others swallowed it. Hoist the single
implementation to plugin.WorkloadFromStore() (convert.go); store is
already a plugin dependency so no new import edge or cycle forms.
Likewise the dockerfile and static sources each had a private
removeContainerByName() that disagreed (remove-all vs stop-at-first).
Docker enforces unique container names, so the two were equivalent for
every reachable state; converge on plugin.RemoveContainerByName()
(container.go, stop-at-first) with a note on why remove-all was moot.
Callers migrated; old copies removed. Adds convert_test.go pinning the
field-by-field contract and JSON edge cases.
alexei.dolgolyov
c8e71a0c34