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/string/pad.mjs

@@ -0,0 +1,24 @@
+import { pad as pad$1 } from "../../string/pad.mjs";
+import { toString } from "../util/toString.mjs";
+//#region src/compat/string/pad.ts
+/**
+* Pads string on the left and right sides if it's shorter than length. Padding characters are truncated if they can't be evenly divided by length.
+* If the length is less than or equal to the original string's length, or if the padding character is an empty string, the original string is returned unchanged.
+*
+* @param str - The string to pad.
+* @param [length] - The length of the resulting string once padded.
+* @param [chars] - The character(s) to use for padding.
+* @returns The padded string, or the original string if padding is not required.
+*
+* @example
+* const result1 = pad('abc', 8);         // result will be '  abc   '
+* const result2 = pad('abc', 8, '_-');   // result will be '_-abc_-_'
+* const result3 = pad('abc', 3);         // result will be 'abc'
+* const result4 = pad('abc', 2);         // result will be 'abc'
+*
+*/
+function pad(str, length, chars) {
+	return pad$1(toString(str), length, chars);
+}
+//#endregion
+export { pad };