chore: flatten src/ to root

utils/classifierApprovalsHook.ts

@@ -0,0 +1,17 @@
+/**
+ * React hook for classifierApprovals store.
+ * Split from classifierApprovals.ts so pure-state importers (permissions.ts,
+ * toolExecution.ts, postCompactCleanup.ts) do not pull React into print.ts.
+ */
+
+import { useSyncExternalStore } from 'react'
+import {
+  isClassifierChecking,
+  subscribeClassifierChecking,
+} from './classifierApprovals.js'
+
+export function useIsClassifierChecking(toolUseID: string): boolean {
+  return useSyncExternalStore(subscribeClassifierChecking, () =>
+    isClassifierChecking(toolUseID),
+  )
+}