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/util/toLength.js

@@ -0,0 +1,26 @@
+const require_toInteger = require("./toInteger.js");
+const require_clamp = require("../math/clamp.js");
+const require_MAX_ARRAY_LENGTH = require("../_internal/MAX_ARRAY_LENGTH.js");
+//#region src/compat/util/toLength.ts
+/**
+* Converts the value to a valid index. A valid index is an integer that is greater than or equal to `0` and less than or equal to `2^32 - 1`.
+*
+* It converts the given value to an integer. If the value is less than `0`, it returns `0`. If the value exceeds `2^32 - 1`, it returns `2^32 - 1`. Values that cannot be converted to a number (such as `NaN` or non-numeric strings) return `0`.
+*
+* @param value - The value to convert to a valid index.
+* @returns The converted value.
+*
+* @example
+* toLength(3.2)  // => 3
+* toLength(-1)   // => 0
+* toLength(1.9)  // => 1
+* toLength('42') // => 42
+* toLength(null) // => 0
+* toLength('a')  // => 0
+*/
+function toLength(value) {
+	if (value == null) return 0;
+	return require_clamp.clamp(require_toInteger.toInteger(value), 0, require_MAX_ARRAY_LENGTH.MAX_ARRAY_LENGTH);
+}
+//#endregion
+exports.toLength = toLength;