ci(sdk): require changelog entry on version bump + harden TS telemetry (#4900)

mem0-ts/src/client/telemetry.ts

@@ -1,7 +1,11 @@
 // @ts-nocheck
 import type { TelemetryClient, TelemetryOptions } from "./telemetry.types";
 
-let version = __MEM0_SDK_VERSION__;
+// __MEM0_SDK_VERSION__ is inlined by tsup/esbuild's `define` at build time from
+// package.json. In unbundled environments (ts-jest, jest globalSetup) the
+// identifier is not defined, so guard with typeof to fall back safely.
+let version =
+  typeof __MEM0_SDK_VERSION__ !== "undefined" ? __MEM0_SDK_VERSION__ : "dev";
 
 // Safely check for process.env in different environments
 let MEM0_TELEMETRY = true;