fix Color-Spalte von 7 auf 50 Zeichen erweitert.

src/Koogle.Infrastructure/Data/Configurations/BookingCategoryConfiguration.cs

@@ -33,7 +33,7 @@ public class BookingCategoryConfiguration : IEntityTypeConfiguration<BookingCate
             .IsRequired();
 
         builder.Property(x => x.Color)
-            .HasMaxLength(7); // #RRGGBB
+            .HasMaxLength(50); // #RRGGBB or #RRGGBBAA or other CSS color formats
 
         builder.Property(x => x.Icon)
             .HasMaxLength(2000);

src/Koogle.Infrastructure/Data/Migrations/20260104121240_ExtendColorMaxLength.cs

@@ -0,0 +1,42 @@
+using Microsoft.EntityFrameworkCore.Migrations;
+
+#nullable disable
+
+namespace Koogle.Infrastructure.Data.Migrations
+{
+    /// <inheritdoc />
+    public partial class ExtendColorMaxLength : Migration
+    {
+        /// <inheritdoc />
+        protected override void Up(MigrationBuilder migrationBuilder)
+        {
+            migrationBuilder.AlterColumn<string>(
+                name: "Color",
+                schema: "app",
+                table: "BookingCategories",
+                type: "nvarchar(50)",
+                maxLength: 50,
+                nullable: true,
+                oldClrType: typeof(string),
+                oldType: "nvarchar(7)",
+                oldMaxLength: 7,
+                oldNullable: true);
+        }
+
+        /// <inheritdoc />
+        protected override void Down(MigrationBuilder migrationBuilder)
+        {
+            migrationBuilder.AlterColumn<string>(
+                name: "Color",
+                schema: "app",
+                table: "BookingCategories",
+                type: "nvarchar(7)",
+                maxLength: 7,
+                nullable: true,
+                oldClrType: typeof(string),
+                oldType: "nvarchar(50)",
+                oldMaxLength: 50,
+                oldNullable: true);
+        }
+    }
+}

src/Koogle.Infrastructure/Data/Migrations/AppDbContextModelSnapshot.cs

@@ -36,8 +36,8 @@ namespace Koogle.Infrastructure.Data.Migrations
                         .HasColumnType("uniqueidentifier");
 
                     b.Property<string>("Color")
-                        .HasMaxLength(7)
-                        .HasColumnType("nvarchar(7)");
+                        .HasMaxLength(50)
+                        .HasColumnType("nvarchar(50)");
 
                     b.Property<DateTime>("CreatedAt")
                         .HasColumnType("datetime2");

src/Koogle.Web/Components/Pages/CashBook/Categories.razor

@@ -168,7 +168,13 @@
             { "Category", category }
         };
 
-        var dialog = await DialogService.ShowAsync<CategoryDialog>("Kategorie bearbeiten", parameters);
+        var dlgOption = new DialogOptions()
+            {
+                MaxWidth = MaxWidth.Medium,
+                FullWidth = true
+            };
+
+        var dialog = await DialogService.ShowAsync<CategoryDialog>("Kategorie bearbeiten", parameters, dlgOption);
         var result = await dialog.Result;
 
         if (result != null && !result.Canceled && result.Data is UpdateBookingCategoryDto dto)

src/Koogle.Web/Components/Pages/CashBook/CategoryDialog.razor

@@ -59,7 +59,7 @@
                     Label="Farbe"
                     DisableAlpha="true"
                     ColorPickerMode="ColorPickerMode.HEX"
-                    Style="width: 150px;" />
+                    Style="width: 330px;" />
                 @if (!string.IsNullOrWhiteSpace(_colorValue))
                 {
                     <MudIcon Icon="@Icons.Material.Filled.Circle" Style="@($"color: {_colorValue}; align-self: center;")" />