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/isThisWeek.d.ts

@@ -0,0 +1,42 @@
+import type {
+  ContextOptions,
+  DateArg,
+  LocalizedOptions,
+  WeekOptions,
+} from "./types.js";
+/**
+ * The {@link isThisWeek} function options.
+ */
+export interface IsThisWeekOptions
+  extends WeekOptions,
+    LocalizedOptions<"options">,
+    ContextOptions<Date> {}
+/**
+ * @name isThisWeek
+ * @category Week Helpers
+ * @summary Is the given date in the same week as the current date?
+ * @pure false
+ *
+ * @description
+ * Is the given date in the same week as the current date?
+ *
+ * @param date - The date to check
+ * @param options - The object with options
+ *
+ * @returns The date is in this week
+ *
+ * @example
+ * // If today is 25 September 2014, is 21 September 2014 in this week?
+ * const result = isThisWeek(new Date(2014, 8, 21))
+ * //=> true
+ *
+ * @example
+ * // If today is 25 September 2014 and week starts with Monday
+ * // is 21 September 2014 in this week?
+ * const result = isThisWeek(new Date(2014, 8, 21), { weekStartsOn: 1 })
+ * //=> false
+ */
+export declare function isThisWeek(
+  date: DateArg<Date> & {},
+  options?: IsThisWeekOptions,
+): boolean;