Evict remote objects from every cache layer

DELETE /objects only removed the artifacts row, so mutable indexes (S3
index object + Redis TTL/ETag keys) kept being served. Clear all layers
and treat a trailing * as a prefix.

internal/server/server.go

@@ -195,13 +195,13 @@ func (s *Server) routes() chi.Router {
 		r.Mount("/probe", probeHandler.Routes())
 
 		r.Route("/remotes/{name}/objects", func(r chi.Router) {
-			objHandler := v2.NewObjectsHandler(s.db)
+			objHandler := v2.NewObjectsHandler(s.db, s.engine)
 			r.Get("/", objHandler.Routes().ServeHTTP)
 			r.Delete("/*", objHandler.Routes().ServeHTTP)
 		})
 
 		r.Route("/locals/{name}/objects", func(r chi.Router) {
-			objHandler := v2.NewObjectsHandler(s.db)
+			objHandler := v2.NewObjectsHandler(s.db, s.engine)
 			r.Get("/", objHandler.LocalRoutes().ServeHTTP)
 			r.Delete("/*", objHandler.LocalRoutes().ServeHTTP)
 		})