Add RunIt entry point for deploying as a live API

Exposes search_flights() as a plain function that RunIt's pipeline
can auto-wrap into a FastAPI endpoint. Uses the real SearchEngine
with Google Flights (no API keys needed).

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

Author: federicodeponte

main.py

@@ -0,0 +1,49 @@
+"""RunIt entry point: exposes OpenSky's SearchEngine as a deployable function."""
+
+from opensky.search import SearchEngine
+
+
+def search_flights(
+    origin: str = "BER",
+    destination: str = "LHR",
+    date: str = "2026-04-01",
+    currency: str = "EUR",
+    max_price: float = 500.0,
+) -> dict:
+    """Search flights between airports. Uses real airline data, no API keys needed."""
+    engine = SearchEngine(currency=currency)
+    try:
+        results = engine.search_scored(
+            origin.upper(),
+            destination.upper(),
+            date,
+            max_price=max_price,
+        )
+        flights = []
+        for sf in results:
+            f = sf.flight
+            flight = {
+                "origin": sf.origin,
+                "destination": sf.destination,
+                "date": sf.date,
+                "route": sf.route,
+                "price": f.price,
+                "currency": f.currency,
+                "stops": f.stops,
+                "duration_minutes": f.duration_minutes,
+                "provider": f.provider,
+                "risk_level": sf.risk.risk_level.value,
+            }
+            if f.booking_url:
+                flight["booking_url"] = f.booking_url
+            flights.append(flight)
+
+        return {
+            "route": f"{origin.upper()} -> {destination.upper()}",
+            "date": date,
+            "currency": currency,
+            "total_results": len(flights),
+            "flights": sorted(flights, key=lambda x: x["price"]),
+        }
+    finally:
+        engine.close()