Integrate OpenFlights API for free, no-auth flight data generation

- Added openFlightsService.js to fetch and cache OpenFlights airport/airline/routes data
- Validates airport codes exist in OpenFlights database (6072+ airports)
- Generates realistic flights using major international airlines
- Creates varied routing options: direct, 1-stop, 2-stop flights
- Updated flightService.js to use OpenFlights as primary source before Amadeus
- OpenFlights as fallback if Amadeus unavailable or returns no results
- No API keys or authentication required
- Cached locally to avoid repeated network requests
- Realistic pricing, times, and stop locations

Docker container rebuilt with OpenFlights integration.

scripts/db_summary.py

@@ -0,0 +1,18 @@
+import sqlite3
+
+conn = sqlite3.connect('data/travel_rates_scraped.sqlite3')
+cur = conn.cursor()
+
+cur.execute('SELECT COUNT(*) FROM rate_entries')
+print('Per-diem entries:', cur.fetchone()[0])
+
+cur.execute('SELECT COUNT(*) FROM accommodations')
+print('Accommodation entries:', cur.fetchone()[0])
+
+cur.execute('SELECT COUNT(DISTINCT country) FROM rate_entries WHERE source="international"')
+print('Countries with per-diem:', cur.fetchone()[0])
+
+cur.execute('SELECT COUNT(DISTINCT city) FROM accommodations')
+print('Canadian cities with accommodation listings:', cur.fetchone()[0])
+
+conn.close()

scripts/debug_canberra.py

@@ -0,0 +1,16 @@
+import sqlite3
+
+conn = sqlite3.connect('data/travel_rates_scraped.sqlite3')
+cursor = conn.cursor()
+
+cursor.execute("""
+    SELECT city, currency, rate_type, rate_amount 
+    FROM rate_entries 
+    WHERE country = 'Australia' AND city LIKE '%Canberra%' 
+    ORDER BY city, rate_type
+""")
+
+for row in cursor.fetchall():
+    print(row)
+
+conn.close()

scripts/show_country_rates.py

@@ -0,0 +1,54 @@
+import sqlite3
+
+conn = sqlite3.connect('data/travel_rates_scraped.sqlite3')
+cursor = conn.cursor()
+
+countries = ['Latvia', 'Germany', 'Dominican Republic', 'Brazil', 'Australia']
+
+for country in countries:
+    print(f"\n{'='*80}")
+    print(f"{country.upper()}")
+    print(f"{'='*80}")
+    
+    # Get all cities for this country
+    cursor.execute("""
+        SELECT DISTINCT city, currency
+        FROM rate_entries
+        WHERE country = ? AND city IS NOT NULL
+        ORDER BY city
+    """, (country,))
+    
+    cities = cursor.fetchall()
+    
+    if not cities:
+        print(f"No cities found for {country}")
+        continue
+    
+    for city_name, currency in cities:
+        print(f"\n📍 {city_name} ({currency})")
+        print("-" * 80)
+        
+        # Get meal rates for this city
+        cursor.execute("""
+            SELECT rate_type, rate_amount
+            FROM rate_entries
+            WHERE country = ? AND city = ? AND rate_type IN 
+                ('breakfast', 'lunch', 'dinner', 'incidental amount')
+            ORDER BY CASE 
+                WHEN rate_type = 'breakfast' THEN 1
+                WHEN rate_type = 'lunch' THEN 2
+                WHEN rate_type = 'dinner' THEN 3
+                WHEN rate_type = 'incidental amount' THEN 4
+            END
+        """, (country, city_name))
+        
+        rates = cursor.fetchall()
+        if rates:
+            for rate_type, amount in rates:
+                # Format the display
+                type_display = rate_type.replace('incidental amount', 'Incidentals').title()
+                print(f"  {type_display:.<25} ${amount:>8.2f} {currency}")
+        else:
+            print("  No rate details found")
+
+conn.close()