fix(server): resolve Claude SDK executable path on Windows npm installs - #3740

Bugbot Analysis Progress (2m 22s elapsed)

✅ Gathered PR context (7s)
✅ Completed bug detection (2m 12s)
✅ Posted analysis results (3s)

Final Result: Bugbot completed review - no new issues found! ✅

Request ID: serverGenReqId_50df9b6c-2b25-4cd2-a979-bece53b3bf5e