Add OpenAPI docs, frontend, migrations, and API updates

- OpenAPI: add missing endpoints (add-from-url, subscriptions, public availability)
- OpenAPI: CalendarSubscription schema, Subscriptions tag
- Frontend app
- Migrations: count_for_availability, subscriptions_sync, user_preferences, calendar_settings
- Config, rate limit, auth, calendar, booking, ICS, availability, user service updates

Made-with: Cursor

frontend/node_modules/date-fns/getWeekOfMonth.cjs

@@ -0,0 +1,54 @@
+"use strict";
+exports.getWeekOfMonth = getWeekOfMonth;
+var _index = require("./_lib/defaultOptions.cjs");
+var _index2 = require("./getDate.cjs");
+var _index3 = require("./getDay.cjs");
+var _index4 = require("./startOfMonth.cjs");
+var _index5 = require("./toDate.cjs");
+
+/**
+ * The {@link getWeekOfMonth} function options.
+ */
+
+/**
+ * @name getWeekOfMonth
+ * @category Week Helpers
+ * @summary Get the week of the month of the given date.
+ *
+ * @description
+ * Get the week of the month of the given date.
+ *
+ * @param date - The given date
+ * @param options - An object with options.
+ *
+ * @returns The week of month
+ *
+ * @example
+ * // Which week of the month is 9 November 2017?
+ * const result = getWeekOfMonth(new Date(2017, 10, 9))
+ * //=> 2
+ */
+function getWeekOfMonth(date, options) {
+  const defaultOptions = (0, _index.getDefaultOptions)();
+  const weekStartsOn =
+    options?.weekStartsOn ??
+    options?.locale?.options?.weekStartsOn ??
+    defaultOptions.weekStartsOn ??
+    defaultOptions.locale?.options?.weekStartsOn ??
+    0;
+
+  const currentDayOfMonth = (0, _index2.getDate)(
+    (0, _index5.toDate)(date, options?.in),
+  );
+  if (isNaN(currentDayOfMonth)) return NaN;
+
+  const startWeekDay = (0, _index3.getDay)(
+    (0, _index4.startOfMonth)(date, options),
+  );
+
+  let lastDayOfFirstWeek = weekStartsOn - startWeekDay;
+  if (lastDayOfFirstWeek <= 0) lastDayOfFirstWeek += 7;
+
+  const remainingDaysAfterFirstWeek = currentDayOfMonth - lastDayOfFirstWeek;
+  return Math.ceil(remainingDaysAfterFirstWeek / 7) + 1;
+}