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/@babel/runtime/helpers/esm/initializerDefineProperty.js

@@ -0,0 +1,9 @@
+function _initializerDefineProperty(e, i, r, l) {
+  r && Object.defineProperty(e, i, {
+    enumerable: r.enumerable,
+    configurable: r.configurable,
+    writable: r.writable,
+    value: r.initializer ? r.initializer.call(l) : void 0
+  });
+}
+export { _initializerDefineProperty as default };