refactor: move otlp trace tests to services/

Author: nicktrn

apps/supervisor/src/otlpTrace.test.ts …or/src/services/otlpTraceService.test.tsapps/supervisor/src/otlpTrace.test.ts renamed to apps/supervisor/src/services/otlpTraceService.test.ts apps/supervisor/src/otlpTrace.test.ts renamed to apps/supervisor/src/services/otlpTraceService.test.ts

@@ -1,5 +1,5 @@
 import { describe, it, expect } from "vitest";
-import { buildOtlpTracePayload } from "./otlpPayload.js";
+import { buildOtlpTracePayload } from "../otlpPayload.js";
 
 describe("buildOtlpTracePayload", () => {
   it("builds valid OTLP JSON with timing attributes", () => {