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/es-toolkit/dist/compat/function/flow.mjs

@@ -0,0 +1,26 @@
+import { flatten } from "../../array/flatten.mjs";
+import { flow as flow$1 } from "../../function/flow.mjs";
+//#region src/compat/function/flow.ts
+/**
+* Creates a new function that executes the given functions in sequence. The return value of the previous function is passed as an argument to the next function.
+*
+* The `this` context of the returned function is also passed to the functions provided as parameters.
+*
+* @param funcs The functions to invoke.
+* @returns Returns the new composite function.
+*
+* @example
+* const add = (x: number, y: number) => x + y;
+* const square = (n: number) => n * n;
+* const double = (n: number) => n * 2;
+*
+* const combined = flow([add, square], double);
+* console.log(combined(1, 2)); // 18
+*/
+function flow(...funcs) {
+	const flattenFuncs = flatten(funcs, 1);
+	if (flattenFuncs.some((func) => typeof func !== "function")) throw new TypeError("Expected a function");
+	return flow$1(...flattenFuncs);
+}
+//#endregion
+export { flow };