Fix eslint errors in test files

- Added runtime constant to StreamManager tests
- Fixed todo.test.ts to use runtimeTempDir variable instead of tempDir

Author: ammar-agent

src/services/streamManager.test.ts

@@ -39,6 +39,7 @@ describe("StreamManager - Concurrent Stream Prevention", () => {
   let streamManager: StreamManager;
   let mockHistoryService: HistoryService;
   let mockPartialService: PartialService;
+  const runtime = createRuntime({ type: "local", srcBaseDir: "/tmp" });
 
   beforeEach(() => {
     mockHistoryService = createMockHistoryService();