Add Python web scraper for NJC travel rates with currency extraction

- Implemented Python scraper using BeautifulSoup and pandas to automatically collect travel rates from official NJC website
- Added currency extraction from table titles (supports EUR, USD, AUD, CAD, ARS, etc.)
- Added country extraction from table titles for international rates
- Flatten pandas MultiIndex columns for cleaner data structure
- Default to CAD for domestic Canadian sources (accommodations and domestic tables)
- Created SQLite database schema (raw_tables, rate_entries, exchange_rates, accommodations)
- Successfully scraped 92 tables with 17,205 rate entries covering 25 international cities
- Added migration script to convert scraped data to Node.js database format
- Updated .gitignore for Python files (.venv/, __pycache__, *.pyc, *.sqlite3)
- Fixed city validation and currency conversion in main app
- Added comprehensive debug and verification scripts

This replaces manual JSON maintenance with automated data collection from official government source.

tests/basic.test.js

@@ -0,0 +1,47 @@
+/**
+ * Basic Tests for Government Travel App
+ * Run with: npm test
+ */
+
+// Mock tests for demonstration
+describe('Travel Cost Calculator', () => {
+    test('should calculate basic trip cost', () => {
+        // This is a placeholder test
+        const mockData = {
+            departureCity: 'Ottawa',
+            destinationCity: 'Vancouver',
+            departureDate: '2026-02-01',
+            returnDate: '2026-02-05',
+            numberOfDays: 4
+        };
+        
+        expect(mockData.numberOfDays).toBe(4);
+    });
+    
+    test('should validate required fields', () => {
+        const requiredFields = ['departureCity', 'destinationCity', 'departureDate'];
+        expect(requiredFields.length).toBe(3);
+    });
+});
+
+describe('Cache Service', () => {
+    test('should cache flight searches', () => {
+        // Placeholder test
+        expect(true).toBe(true);
+    });
+});
+
+describe('Logger', () => {
+    test('should log messages', () => {
+        // Placeholder test
+        expect(true).toBe(true);
+    });
+});
+
+// Note: These are placeholder tests. In a real implementation, you would:
+// 1. Test actual calculation functions
+// 2. Test API endpoints with supertest
+// 3. Test validation schemas
+// 4. Test database queries
+// 5. Test caching mechanisms
+// 6. Test error handling