[Init] Initial commit - NetMesh terminal manager

application/state/sftp/useSftpFileWatch.ts

@@ -0,0 +1,30 @@
+import { useEffect, useRef } from "react";
+import { netcattyBridge } from "../../../infrastructure/services/netcattyBridge";
+import type { FileWatchErrorEvent, FileWatchSyncedEvent, SftpStateOptions } from "./types";
+
+export const useSftpFileWatch = (options?: SftpStateOptions) => {
+  const optionsRef = useRef(options);
+  optionsRef.current = options;
+
+  useEffect(() => {
+    const bridge = netcattyBridge.get();
+    if (!bridge?.onFileWatchSynced || !bridge?.onFileWatchError) return;
+
+    const unsubscribeSynced = bridge.onFileWatchSynced((payload: FileWatchSyncedEvent) => {
+      optionsRef.current?.onFileWatchSynced?.(payload);
+    });
+
+    const unsubscribeError = bridge.onFileWatchError((payload: FileWatchErrorEvent) => {
+      optionsRef.current?.onFileWatchError?.(payload);
+    });
+
+    return () => {
+      try {
+        unsubscribeSynced?.();
+        unsubscribeError?.();
+      } catch {
+        // ignore cleanup errors
+      }
+    };
+  }, []);
+};