Refactor Day07 to rename variables and fix return type for timeline count methods

AoC_2025/Day07.cs

@@ -29,15 +29,15 @@ public class Day07 : IPuzzleSolver<long>
     {
         var grid = ParsePuzzleInput(pathToPuzzleInput);
         var start = GetStart(grid);
-        var nodesWithCount = GetTimelinesCountRecursive(grid, start, []);
-        return nodesWithCount;
+        var timelinesCount = GetTimelinesCountRecursive(grid, start, []);
+        return timelinesCount;
     }
     
     public long SolvePart2Again(string pathToPuzzleInput)
     {
         var grid = ParsePuzzleInput(pathToPuzzleInput);
-        var nodesWithCount = GetTimelinesCount(grid);
-        return nodesWithCount.Sum();
+        var timelinesCount = GetTimelinesCount(grid);
+        return timelinesCount;
     }
 
     private Coordinate GetStart(string[] grid)
@@ -98,7 +98,7 @@ public class Day07 : IPuzzleSolver<long>
         return res;
     }
 
-    private long[] GetTimelinesCount(string[] grid)
+    private long GetTimelinesCount(string[] grid)
     {
         var numbersGrid = grid
             .Select(line => line.Select(c => 0L).ToArray())
@@ -125,6 +125,6 @@ public class Day07 : IPuzzleSolver<long>
             }
         }
 
-        return numbersGrid[^1];
+        return numbersGrid[^1].Sum();
     }
 }