feat(dictation): add persistent language selection in General settings

components/dictation-state.ts

@@ -0,0 +1,25 @@
+"use client";
+
+import { useSyncExternalStore } from "react";
+
+// The keyboard chain needs a synchronous answer; settings also subscribe
+// so the language control locks from connecting until cleanup completes.
+let active = false;
+const listeners = new Set<() => void>();
+
+export function isDictationActive(): boolean { return active; }
+
+export function setDictationActive(next: boolean): void {
+	if (active === next) return;
+	active = next;
+	for (const listener of listeners) listener();
+}
+
+function subscribe(listener: () => void): () => void {
+	listeners.add(listener);
+	return () => { listeners.delete(listener); };
+}
+
+export function useDictationActive(): boolean {
+	return useSyncExternalStore(subscribe, isDictationActive, () => false);
+}