Add settings page for managing forecasting API key and URL via UI

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

frontend/node_modules/recharts/es6/chart/FunnelChart.js

@@ -0,0 +1,21 @@
+import * as React from 'react';
+import { forwardRef } from 'react';
+import { arrayTooltipSearcher } from '../state/optionsSlice';
+import { CartesianChart } from './CartesianChart';
+var allowedTooltipTypes = ['item'];
+
+/**
+ * @consumes ResponsiveContainerContext
+ * @provides CartesianViewBoxContext
+ * @provides CartesianChartContext
+ */
+export var FunnelChart = /*#__PURE__*/forwardRef((props, ref) => {
+  return /*#__PURE__*/React.createElement(CartesianChart, {
+    chartName: "FunnelChart",
+    defaultTooltipEventType: "item",
+    validateTooltipEventTypes: allowedTooltipTypes,
+    tooltipPayloadSearcher: arrayTooltipSearcher,
+    categoricalChartProps: props,
+    ref: ref
+  });
+});