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/lucide-react/dist/esm/icons/undo.js

@@ -0,0 +1,16 @@
+/**
+ * @license lucide-react v0.468.0 - ISC
+ *
+ * This source code is licensed under the ISC license.
+ * See the LICENSE file in the root directory of this source tree.
+ */
+
+import createLucideIcon from '../createLucideIcon.js';
+
+const Undo = createLucideIcon("Undo", [
+  ["path", { d: "M3 7v6h6", key: "1v2h90" }],
+  ["path", { d: "M21 17a9 9 0 0 0-9-9 9 9 0 0 0-6 2.3L3 13", key: "1r6uu6" }]
+]);
+
+export { Undo as default };
+//# sourceMappingURL=undo.js.map