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/is-arrayish/.editorconfig

@@ -0,0 +1,18 @@
+root = true
+
+[*]
+indent_style = tab
+end_of_line = lf
+charset = utf-8
+trim_trailing_whitespace = true
+insert_final_newline = true
+
+[*.coffee]
+indent_style = space
+
+[{package.json,*.yml}]
+indent_style = space
+indent_size = 2
+
+[*.md]
+trim_trailing_whitespace = false

node_modules/is-arrayish/.istanbul.yml

@@ -0,0 +1,4 @@
+instrumentation:
+  excludes:
+    - test.js
+    - test/**/*

node_modules/is-arrayish/.npmignore

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+/coverage/
+/test.js
+/test/
+*.sw[a-p]
+/node_modules/

node_modules/is-arrayish/.travis.yml

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+language: node_js
+
+script:
+  - node_modules/.bin/istanbul cover node_modules/.bin/_mocha -- --compilers coffee:coffee-script/register
+  - cat coverage/lcov.info | node_modules/.bin/coveralls
+node_js:
+  - "0.10"
+  - "0.11"
+  - "0.12"
+  - "iojs"
+os:
+  - linux
+  - osx
+
+notifications:
+  slack:
+    secure: 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

node_modules/is-arrayish/LICENSE

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+The MIT License (MIT)
+
+Copyright (c) 2015 JD Ballard
+
+Permission is hereby granted, free of charge, to any person obtaining a copy
+of this software and associated documentation files (the "Software"), to deal
+in the Software without restriction, including without limitation the rights
+to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+copies of the Software, and to permit persons to whom the Software is
+furnished to do so, subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in
+all copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+THE SOFTWARE.

node_modules/is-arrayish/README.md

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+# node-is-arrayish [![Travis-CI.org Build Status](https://img.shields.io/travis/Qix-/node-is-arrayish.svg?style=flat-square)](https://travis-ci.org/Qix-/node-is-arrayish) [![Coveralls.io Coverage Rating](https://img.shields.io/coveralls/Qix-/node-is-arrayish.svg?style=flat-square)](https://coveralls.io/r/Qix-/node-is-arrayish)
+> Determines if an object can be used like an Array
+
+## Example
+```javascript
+var isArrayish = require('is-arrayish');
+
+isArrayish([]); // true
+isArrayish({__proto__: []}); // true
+isArrayish({}); // false
+isArrayish({length:10}); // false
+```
+
+## License
+Licensed under the [MIT License](http://opensource.org/licenses/MIT).
+You can find a copy of it in [LICENSE](LICENSE).

node_modules/is-arrayish/index.js

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+'use strict';
+
+module.exports = function isArrayish(obj) {
+	if (!obj) {
+		return false;
+	}
+
+	return obj instanceof Array || Array.isArray(obj) ||
+		(obj.length >= 0 && obj.splice instanceof Function);
+};

node_modules/is-arrayish/package.json

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+{
+  "name": "is-arrayish",
+  "description": "Determines if an object can be used as an array",
+  "version": "0.2.1",
+  "author": "Qix (http://github.com/qix-)",
+  "keywords": [
+    "is",
+    "array",
+    "duck",
+    "type",
+    "arrayish",
+    "similar",
+    "proto",
+    "prototype",
+    "type"
+  ],
+  "license": "MIT",
+  "scripts": {
+    "pretest": "xo",
+    "test": "mocha --compilers coffee:coffee-script/register"
+  },
+  "repository": {
+    "type": "git",
+    "url": "https://github.com/qix-/node-is-arrayish.git"
+  },
+  "devDependencies": {
+    "coffee-script": "^1.9.3",
+    "coveralls": "^2.11.2",
+    "istanbul": "^0.3.17",
+    "mocha": "^2.2.5",
+    "should": "^7.0.1",
+    "xo": "^0.6.1"
+  }
+}