workers: Simple storage diagnostics

api/api_storage.go

@@ -108,6 +108,10 @@ type StorageMiner interface {
 
 	SectorsUpdate(context.Context, abi.SectorNumber, SectorState) error
 
+	StorageList(ctx context.Context) (map[stores.ID][]stores.Decl, error)
+
+	StorageInfo(context.Context, stores.ID) (stores.StorageInfo, error)
+
 	// WorkerConnect tells the node to connect to workers RPC
 	WorkerConnect(context.Context, string) error
 	stores.SectorIndex