refactor(delegate-task): inject sync task deps for test isolation

src/tools/delegate-task/sync-task-deps.ts

@@ -0,0 +1,13 @@
+import { createSyncSession } from "./sync-session-creator"
+import { sendSyncPrompt } from "./sync-prompt-sender"
+import { pollSyncSession } from "./sync-session-poller"
+import { fetchSyncResult } from "./sync-result-fetcher"
+
+export const syncTaskDeps = {
+  createSyncSession,
+  sendSyncPrompt,
+  pollSyncSession,
+  fetchSyncResult,
+}
+
+export type SyncTaskDeps = typeof syncTaskDeps