feat: initialize netx ops tool repository

Set up netx as a standalone git-managed project with isolated Python dependencies, alarm ingestion/query APIs, oclaw bridge integration, and ops-focused UI enhancements including history and raw field access.

Co-authored-by: Cursor <cursoragent@cursor.com>

web/src/hooks/useToast.ts

@@ -0,0 +1,20 @@
+import { useCallback, useEffect, useState } from "react";
+
+export type ToastState = { type: "ok" | "error"; text: string } | null;
+
+export function useToast(autoHideMs = 2600) {
+  const [toast, setToast] = useState<ToastState>(null);
+
+  const showOk = useCallback((text: string) => setToast({ type: "ok", text }), []);
+  const showError = useCallback((text: string) => setToast({ type: "error", text }), []);
+  const clear = useCallback(() => setToast(null), []);
+
+  useEffect(() => {
+    if (!toast) return;
+    const t = setTimeout(() => setToast(null), autoHideMs);
+    return () => clearTimeout(t);
+  }, [toast, autoHideMs]);
+
+  return { toast, showOk, showError, clear };
+}
+