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/state/SetLegendPayload.js

@@ -0,0 +1,63 @@
+import { useLayoutEffect, useRef } from 'react';
+import { useIsPanorama } from '../context/PanoramaContext';
+import { selectChartLayout } from '../context/chartLayoutContext';
+import { useAppDispatch, useAppSelector } from './hooks';
+import { addLegendPayload, replaceLegendPayload, removeLegendPayload } from './legendSlice';
+export function SetLegendPayload(_ref) {
+  var legendPayload = _ref.legendPayload;
+  var dispatch = useAppDispatch();
+  var isPanorama = useIsPanorama();
+  var prevPayloadRef = useRef(null);
+  useLayoutEffect(() => {
+    if (isPanorama) {
+      return;
+    }
+    if (prevPayloadRef.current === null) {
+      dispatch(addLegendPayload(legendPayload));
+    } else if (prevPayloadRef.current !== legendPayload) {
+      dispatch(replaceLegendPayload({
+        prev: prevPayloadRef.current,
+        next: legendPayload
+      }));
+    }
+    prevPayloadRef.current = legendPayload;
+  }, [dispatch, isPanorama, legendPayload]);
+  useLayoutEffect(() => {
+    return () => {
+      if (prevPayloadRef.current) {
+        dispatch(removeLegendPayload(prevPayloadRef.current));
+        prevPayloadRef.current = null;
+      }
+    };
+  }, [dispatch]);
+  return null;
+}
+export function SetPolarLegendPayload(_ref2) {
+  var legendPayload = _ref2.legendPayload;
+  var dispatch = useAppDispatch();
+  var layout = useAppSelector(selectChartLayout);
+  var prevPayloadRef = useRef(null);
+  useLayoutEffect(() => {
+    if (layout !== 'centric' && layout !== 'radial') {
+      return;
+    }
+    if (prevPayloadRef.current === null) {
+      dispatch(addLegendPayload(legendPayload));
+    } else if (prevPayloadRef.current !== legendPayload) {
+      dispatch(replaceLegendPayload({
+        prev: prevPayloadRef.current,
+        next: legendPayload
+      }));
+    }
+    prevPayloadRef.current = legendPayload;
+  }, [dispatch, layout, legendPayload]);
+  useLayoutEffect(() => {
+    return () => {
+      if (prevPayloadRef.current) {
+        dispatch(removeLegendPayload(prevPayloadRef.current));
+        prevPayloadRef.current = null;
+      }
+    };
+  }, [dispatch]);
+  return null;
+}