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/hooks.js

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+import { useSyncExternalStoreWithSelector } from 'use-sync-external-store/shim/with-selector';
+import { useContext, useMemo } from 'react';
+import { RechartsReduxContext } from './RechartsReduxContext';
+var noopDispatch = a => a;
+export var useAppDispatch = () => {
+  var context = useContext(RechartsReduxContext);
+  if (context) {
+    return context.store.dispatch;
+  }
+  return noopDispatch;
+};
+var noop = () => {};
+var addNestedSubNoop = () => noop;
+var refEquality = (a, b) => a === b;
+
+/**
+ * This is a recharts variant of `useSelector` from 'react-redux' package.
+ *
+ * The difference is that react-redux version will throw an Error when used outside of Redux context.
+ *
+ * This, recharts version, will return undefined instead.
+ *
+ * This is because we want to allow using our components outside the Chart wrapper,
+ * and have people provide all props explicitly.
+ *
+ * If however they use the component inside a chart wrapper then those props become optional,
+ * and we read them from Redux state instead.
+ *
+ * @param selector for pulling things out of Redux store; will not be called if the store is not accessible
+ * @return whatever the selector returned; or undefined when outside of Redux store
+ */
+export function useAppSelector(selector) {
+  var context = useContext(RechartsReduxContext);
+  var outOfContextSelector = useMemo(() => {
+    if (!context) {
+      return noop;
+    }
+    return state => {
+      if (state == null) {
+        return undefined;
+      }
+      return selector(state);
+    };
+  }, [context, selector]);
+  return useSyncExternalStoreWithSelector(context ? context.subscription.addNestedSub : addNestedSubNoop, context ? context.store.getState : noop, context ? context.store.getState : noop, outOfContextSelector, refEquality);
+}