Merge feature/seed-rew (SEED-REW): Backend ColorVariety 'Pink Eyed White (PEW)' → 'REW' rename-in-place (FK-safe)

GerbilManagerWebAPI/ApplicationContext.cs

@@ -291,7 +291,7 @@ public class ApplicationContext : DbContext
         (string Name, string Genotype, int SortOrder)[] catalog =
         {
             // --- C-locus white / partial albino (IDs 1-3) ---
-            ("Pink Eyed White (PEW)", "AA chch DD EE GG pp spsp rere",  0),
+            ("REW",                   "AA chch DD EE GG pp spsp rere",  0),
             ("Hermelin",              "aa chch DD EE GG PP spsp rere",  1),
             ("Himalaya",              "AA chch DD EE GG PP spsp rere",  2),
             // --- Zobel / colourpoint dark (ID 4) ---

GerbilManagerWebAPI/Migrations/20260606231220_RenameREW.cs

@@ -0,0 +1,33 @@
+using System;
+using Microsoft.EntityFrameworkCore.Migrations;
+
+#nullable disable
+
+namespace GerbilManagerWebAPI.Migrations
+{
+    /// <inheritdoc />
+    public partial class RenameREW : Migration
+    {
+        /// <inheritdoc />
+        protected override void Up(MigrationBuilder migrationBuilder)
+        {
+            migrationBuilder.UpdateData(
+                table: "ColorVarieties",
+                keyColumn: "Id",
+                keyValue: new Guid("00000000-0000-0000-0000-000000000001"),
+                column: "Name",
+                value: "REW");
+        }
+
+        /// <inheritdoc />
+        protected override void Down(MigrationBuilder migrationBuilder)
+        {
+            migrationBuilder.UpdateData(
+                table: "ColorVarieties",
+                keyColumn: "Id",
+                keyValue: new Guid("00000000-0000-0000-0000-000000000001"),
+                column: "Name",
+                value: "Pink Eyed White (PEW)");
+        }
+    }
+}

GerbilManagerWebAPI/Migrations/ApplicationContextModelSnapshot.cs

@@ -216,7 +216,7 @@ namespace GerbilManagerWebAPI.Migrations
                         {
                             Id = new Guid("00000000-0000-0000-0000-000000000001"),
                             CanonicalGenotype = "AA chch DD EE GG pp spsp rere",
-                            Name = "Pink Eyed White (PEW)",
+                            Name = "REW",
                             SortOrder = 0
                         },
                         new