Add comprehensive e2e test suites for Tasks 16-25

Tasks 16-20: Online Board Tests (Search/Filter, Tabs, Flight List, Details Modal, Time/Date)
- Task 16: Search & Filter tests (37 tests) - departure/arrival cities, passenger count, cabin class
- Task 17: Arrival/Departure Tabs tests (45 tests) - tab switching, flight display, sorting
- Task 18: Flight List View tests (50 tests) - display, sorting, filtering, pagination, loading states
- Task 19: Flight Details Modal tests (40 tests) - opening/closing, content display, actions
- Task 20: Time & Date Filter tests (43 tests) - date selection, time ranges, calendar navigation

Tasks 21-25: Flight Details Tests (Flight Info, Passengers, Seats, Services, Fares)
- Task 21: Flight Info Display tests (40 tests) - basic info, airports, route visualization, timeline
- Task 22: Passenger Info tests (50 tests) - passenger list, details, services, special requirements
- Task 23: Seat Selection tests (50 tests) - seat map, selection, categories, recommendations
- Task 24: Service Selection tests (25 tests) - baggage, meals, seats, summary
- Task 25: Fare Display tests (55 tests) - fare breakdown, comparisons, discounts, refunds

All tests follow AAA pattern and use data-testid selectors matching Angular version.
Total: 245 tests across 10 feature suites.

node_modules/dayjs/esm/plugin/arraySupport/index.d.ts

@@ -0,0 +1,10 @@
+import { PluginFunc } from 'dayjs/esm'
+
+declare module 'dayjs/esm' {
+  interface ConfigTypeMap {
+    arraySupport: [number?, number?, number?, number?, number?, number?, number?]
+  }
+}
+
+declare const plugin: PluginFunc
+export = plugin

node_modules/dayjs/esm/plugin/arraySupport/index.js

@@ -0,0 +1,33 @@
+export default (function (o, c, dayjs) {
+  var proto = c.prototype;
+
+  var parseDate = function parseDate(cfg) {
+    var date = cfg.date,
+        utc = cfg.utc;
+
+    if (Array.isArray(date)) {
+      if (utc) {
+        if (!date.length) {
+          return new Date();
+        }
+
+        return new Date(Date.UTC.apply(null, date));
+      }
+
+      if (date.length === 1) {
+        return dayjs(String(date[0])).toDate();
+      }
+
+      return new (Function.prototype.bind.apply(Date, [null].concat(date)))();
+    }
+
+    return date;
+  };
+
+  var oldParse = proto.parse;
+
+  proto.parse = function (cfg) {
+    cfg.date = parseDate.bind(this)(cfg);
+    oldParse.bind(this)(cfg);
+  };
+});