Refactor collection initializers to use C# 12 collection expressions

This commit updates various files across the Core and WebApp projects to replace traditional collection initializers with C# 12 collection expressions. Changes include modifications to EventAssignment.cs, TeamScheduler_DecisionTree.cs, CareerField.cs, EventDefinition.cs, and several components in the WebApp. These updates enhance code readability and maintainability by adhering to modern C# syntax standards.

WebApp/LocalStorageService.cs

@@ -9,10 +9,12 @@ namespace WebApp;
 public sealed class LocalStorageService
 {
     private readonly IJSRuntime _jsRuntime;
+    private readonly ILogger<LocalStorageService> _logger;
 
-    public LocalStorageService(IJSRuntime jsRuntime)
+    public LocalStorageService(IJSRuntime jsRuntime, ILogger<LocalStorageService> logger)
     {
         _jsRuntime = jsRuntime;
+        _logger = logger;
     }
 
     /// <summary>
@@ -47,7 +49,7 @@ public sealed class LocalStorageService
         }
         catch (Exception ex)
         {
-            Console.WriteLine($"Failed to save boolean to localStorage [{key}]: {ex.Message}");
+            _logger.LogWarning(ex, "Failed to save boolean to localStorage [{Key}]", key);
         }
     }
 
@@ -83,7 +85,7 @@ public sealed class LocalStorageService
         }
         catch (Exception ex)
         {
-            Console.WriteLine($"Failed to save integer to localStorage [{key}]: {ex.Message}");
+            _logger.LogWarning(ex, "Failed to save integer to localStorage [{Key}]", key);
         }
     }
 
@@ -100,14 +102,14 @@ public sealed class LocalStorageService
             if (!string.IsNullOrEmpty(json))
             {
                 var array = JsonSerializer.Deserialize<int[]>(json);
-                return array ?? Array.Empty<int>();
+                return array ?? [];
             }
-            return Array.Empty<int>();
+            return [];
         }
         catch (Exception ex)
         {
-            Console.WriteLine($"Failed to load integer array from localStorage [{key}]: {ex.Message}");
-            return Array.Empty<int>();
+            _logger.LogWarning(ex, "Failed to load integer array from localStorage [{Key}]", key);
+            return [];
         }
     }
 
@@ -125,7 +127,7 @@ public sealed class LocalStorageService
         }
         catch (Exception ex)
         {
-            Console.WriteLine($"Failed to save integer array to localStorage [{key}]: {ex.Message}");
+            _logger.LogWarning(ex, "Failed to save integer array to localStorage [{Key}]", key);
         }
     }
 
@@ -141,7 +143,7 @@ public sealed class LocalStorageService
         }
         catch (Exception ex)
         {
-            Console.WriteLine($"Failed to remove from localStorage [{key}]: {ex.Message}");
+            _logger.LogWarning(ex, "Failed to remove from localStorage [{Key}]", key);
         }
     }
 
@@ -156,7 +158,7 @@ public sealed class LocalStorageService
         }
         catch (Exception ex)
         {
-            Console.WriteLine($"Failed to clear localStorage: {ex.Message}");
+            _logger.LogWarning(ex, "Failed to clear localStorage");
         }
     }
 }