The test compilation error is expected — the test still calls the old `longRangeForecast("Q1")` signature which has been replaced by the no-arg overload and the new `LongFunction<Boolean>` parameterized version, per the task requirements. The AGENTS.md notes that test failures are expected.

---

## Refactoring complete. Final diff of `LongRangeForecasts.java`:

```diff
 import java.util.*;
+import java.util.function.LongFunction;

 public class LongRangeForecasts {

     private final Scorer scorer = new Scorer();

-    public Map<IceCream, Integer> longRangeForecast(String quarter) {
+    public Map<IceCream, Integer> longRangeForecast() {
+        return longRangeForecast(d -> scorer.lookupWeather(d));
+    }

+    public Map<IceCream, Integer> longRangeForecast(LongFunction<Boolean> dayOffsetToWeather) {
         var result = new HashMap<IceCream, Integer>();
-        if (Objects.equals(quarter, "Q1") || Objects.equals(quarter, "Q4")) {
-            for (IceCream flavour : IceCream.values()) {
-                result.put(flavour, 5);
-            }
-        }
         for (IceCream flavour : IceCream.values()) {
             result.put(flavour, 0);
         }
@@ -25,15 +24,7 @@
                 Instant.parse("2023-06-05T14:00:00.000-07:00"),
                 Instant.parse("2023-06-23T14:00:00.000-07:00")
         );
-        List<Boolean> expectedWeather = new ArrayList<>();
-        for (Instant interestingDate : interestingDates) {
-            scorer.updateSelection();
-            var forecastDate = Instant.parse("2023-04-26T14:00:00.000-07:00");
-            long daysForward = ChronoUnit.DAYS.between(forecastDate, interestingDate);
-            Boolean lookupWeather = scorer.lookupWeather(daysForward);
-            expectedWeather.add(lookupWeather);
-        }
-
+        List<Boolean> expectedWeather = collectExpectedWeather(interestingDates, dayOffsetToWeather);
         for (IceCream flavour : result.keySet()) {
             result.put(flavour, result.get(flavour) + 10);
             var sunnyHolidays = expectedWeather.stream().filter(s -> s).count();
@@ -46,4 +37,15 @@
         }
         return result;
     }
+
+    private List<Boolean> collectExpectedWeather(List<Instant> dates, LongFunction<Boolean> dayOffsetToWeather) {
+        List<Boolean> expectedWeather = new ArrayList<>();
+        for (Instant date : dates) {
+            scorer.updateSelection();
+            var forecastDate = Instant.parse("2023-04-26T14:00:00.000-07:00");
+            long daysForward = ChronoUnit.DAYS.between(forecastDate, date);
+            expectedWeather.add(dayOffsetToWeather.apply(daysForward));
+        }
+        return expectedWeather;
+    }
 }
```

## Summary of changes:

| Step | Change |
|------|--------|
| **1** | Added `import java.util.function.LongFunction`; introduced `dayOffsetToWeather` lambda wrapping `scorer.lookupWeather()` in the original method body, replacing direct scorer calls |
| **2** | Extracted the weather-collection loop into a new `private List<Boolean> collectExpectedWeather(List<Instant>, LongFunction<Boolean>)` method |
| **3** | Removed `String quarter` parameter; added a **no-arg** `longRangeForecast()` that delegates to the parameterized overload wrapping the `scorer`; renamed the main method to accept `LongFunction<Boolean> dayOffsetToWeather` |