fix: bump version to 0.1.7 to replace broken 0.1.6 on npm

0.1.6 contained a broken createRequire change that caused
BaseSandboxManager.isSupportedPlatform to fail. This version
restores the original require() based lazy loading.

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

package.json

@@ -12,7 +12,7 @@
   "bugs": {
     "url": "https://github.com/shipany-ai/open-agent-sdk/issues"
   },
-  "version": "0.1.5",
+  "version": "0.1.7",
   "description": "Open-source Agent SDK inspired by @anthropic-ai/claude-agent-sdk. Runs the agent loop in-process — no local CLI required. Deploy anywhere: cloud, serverless, Docker, CI/CD.",
   "type": "module",
   "main": "./dist/sdk.js",