updates

db/schema.sql

@@ -66,3 +66,10 @@ CREATE TABLE IF NOT EXISTS inventory_history (
 	"PreviousResourcePool" TEXT,
 	"PreviousProvisionedDisk" REAL
 );
+
+CREATE TABLE IF NOT EXISTS snapshot_registry (
+	"id" INTEGER PRIMARY KEY AUTOINCREMENT,
+	"snapshot_type" TEXT NOT NULL,
+	"table_name" TEXT NOT NULL UNIQUE,
+	"snapshot_time" INTEGER NOT NULL
+);