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/math/ceil.d.mts

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+//#region src/compat/math/ceil.d.ts
+/**
+ * Computes number rounded up to precision.
+ *
+ * @param number The number to round up.
+ * @param precision The precision to round up to.
+ * @returns Returns the rounded up number.
+ *
+ * @example
+ * ceil(4.006); // => 5
+ * ceil(6.004, 2); // => 6.01
+ * ceil(6040, -2); // => 6100
+ */
+declare function ceil(number: number, precision?: number): number;
+//#endregion
+export { ceil };