feat(FN-1761): fix lint errors in remaining test files

- child-process-worker.test.ts: replace Function[] with SignalListener type
- remote-node-runtime.test.ts: add yield statement to idleStream generator
- All 57 test files pass with 0 errors

packages/engine/src/runtimes/child-process-worker.test.ts

@@ -158,10 +158,12 @@ function getHandler<T = unknown>(
   return handler as (payload: unknown) => Promise<T>;
 }
 
+type SignalListener = (...args: unknown[]) => void;
+
 describe("child-process-worker", () => {
   const originalProcessSend = process.send;
-  let sigtermBaseline: Function[] = [];
-  let sigintBaseline: Function[] = [];
+  let sigtermBaseline: SignalListener[] = [];
+  let sigintBaseline: SignalListener[] = [];
 
   beforeEach(() => {
     vi.resetModules();

packages/engine/src/runtimes/remote-node-runtime.test.ts

@@ -40,6 +40,8 @@ async function* idleStream(signal?: AbortSignal): AsyncIterable<unknown> {
   while (!signal?.aborted) {
     await new Promise((resolve) => setTimeout(resolve, 5));
   }
+  // Yield to satisfy TypeScript/ESLint generator requirements
+  yield;
 }
 
 async function* eventStream(events: unknown[], signal?: AbortSignal): AsyncIterable<unknown> {