All four steps are complete. Here's the summary:

## What was done

1. **Lambda introduced** (manual edit): the `scorer.updateSelection()` + `scorer.lookupWeather(...)` code became a `LongFunction<Boolean> dayOffsetToWeather` lambda defined at the top of the method; the loop now calls `dayOffsetToWeather.apply(daysForward)`.
2. **Extracted** the weather-collection loop with `java-refactor extract` (the tool generated `collectExpectedWeather(interestingDates, dayOffsetToWeather, expectedWeather)`), then a minimal manual cleanup gave it the suggested shape `private List<Boolean> collectExpectedWeather(LongFunction<Boolean> dayOffsetToWeather)` returning the list.
3. **Signature changed** (manual edit — neither `change-method-signature` nor `introduce-param` supports removing the `quarter` parameter): now `public Map<IceCream, Integer> longRangeForecast(LongFunction<Boolean> dayOffsetToWeather)` plus a public no-arg overload delegating with a lambda wrapping the `scorer` field. The `quarter` branch was dropped (it was inert anyway — its `put(flavour, 5)` was immediately overwritten by `put(flavour, 0)`), and the test call site updated to `longRangeForecast()`.
4. `mvn -q test` was run after every change: code compiles throughout; the 2 remaining failures (`LongRangeForecastsTest`, `DailyForecastsTest`) are the expected pre-existing ones caused by the `Scorer` state dependency.

## Final diff — `src/main/java/codingdojo/LongRangeForecasts.java`

```diff
@@ -3,36 +3,26 @@
 import java.time.Instant;
 import java.time.temporal.ChronoUnit;
 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(daysForward -> {
+            scorer.updateSelection();
+            return scorer.lookupWeather(daysForward);
+        });
+    }
+
+    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);
         }
-        List<Instant> interestingDates = List.of(
-                Instant.parse("2023-05-01T14:00:00.000-07:00"),
-                Instant.parse("2023-05-18T14:00:00.000-07:00"),
-                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);
-        }
+        var expectedWeather = collectExpectedWeather(dayOffsetToWeather);
 
         for (IceCream flavour : result.keySet()) {
             result.put(flavour, result.get(flavour) + 10);
@@ -46,4 +36,21 @@
         }
         return result;
     }
+
+    private List<Boolean> collectExpectedWeather(LongFunction<Boolean> dayOffsetToWeather) {
+        List<Instant> interestingDates = List.of(
+                Instant.parse("2023-05-01T14:00:00.000-07:00"),
+                Instant.parse("2023-05-18T14:00:00.000-07:00"),
+                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) {
+            var forecastDate = Instant.parse("2023-04-26T14:00:00.000-07:00");
+            long daysForward = ChronoUnit.DAYS.between(forecastDate, interestingDate);
+            Boolean lookupWeather = dayOffsetToWeather.apply(daysForward);
+            expectedWeather.add(lookupWeather);
+        }
+        return expectedWeather;
+    }
 }
```

Supporting change in `src/test/java/codingdojo/LongRangeForecastsTest.java`:

```diff
-        var quarter = "Q3";
-        var actual = new LongRangeForecasts().longRangeForecast(quarter);
+        var actual = new LongRangeForecasts().longRangeForecast();
```

Stopping here as instructed.