sdks/node: mirror Elydora-Node-SDK 2.0.1

Rebuilt from the standalone 2101cb7 tree (durable transactions, Kiro IDE
adapter, hook retry with a bounded chain lock, version 2.0.1) with the
Open-Source API trims re-applied: no webhooks, members, admin events,
deep health, token rotation, or agent integration updates.

Claude-Session: https://claude.ai/code/session_01QoUjdc7HGKTsgj5GhG8HvF

sdks/node/package.json

@@ -1,6 +1,6 @@
 {
   "name": "@elydora/sdk",
-  "version": "1.1.0",
+  "version": "2.0.1",
   "description": "Node.js/TypeScript SDK for the Elydora tamper-evident audit platform",
   "main": "dist/index.js",
   "types": "dist/index.d.ts",