Fix PlatformSettings insert collision in AddAiCatalogPriceCheckGating migration

Replace InsertData (hardcoded ID 9) with raw IF NOT EXISTS SQL so the
migration is safe on environments where ID 9 is already taken.

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

src/PowderCoating.Infrastructure/Migrations/20260426122625_AddAiCatalogPriceCheckGating.cs

@@ -25,15 +25,17 @@ namespace PowderCoating.Infrastructure.Migrations
                 nullable: false,
                 defaultValue: false);
 
-            migrationBuilder.InsertData(
-                table: "PlatformSettings",
-                columns: ["Id", "Key", "Value", "Label", "Description", "GroupName"],
-                values: new object[,]
-                {
-                    { 9, "AiCatalogPriceCheckEnabled", "true", "AI Catalog Price Check Enabled",
-                      "When true (default), the AI Catalog Price Check feature is available to companies on qualifying plans. Set to false to disable it platform-wide.",
-                      "AI Features" }
-                });
+            // Use raw SQL so we don't collide with an existing row — ID 9 may already be
+            // taken in environments where settings were added outside of migrations.
+            migrationBuilder.Sql("""
+                IF NOT EXISTS (SELECT 1 FROM [PlatformSettings] WHERE [Key] = N'AiCatalogPriceCheckEnabled')
+                BEGIN
+                    INSERT INTO [PlatformSettings] ([Key], [Value], [Label], [Description], [GroupName])
+                    VALUES (N'AiCatalogPriceCheckEnabled', N'true', N'AI Catalog Price Check Enabled',
+                            N'When true (default), the AI Catalog Price Check feature is available to companies on qualifying plans. Set to false to disable it platform-wide.',
+                            N'AI Features');
+                END
+                """);
 
             migrationBuilder.UpdateData(
                 table: "PricingTiers",
@@ -60,10 +62,7 @@ namespace PowderCoating.Infrastructure.Migrations
         /// <inheritdoc />
         protected override void Down(MigrationBuilder migrationBuilder)
         {
-            migrationBuilder.DeleteData(
-                table: "PlatformSettings",
-                keyColumn: "Id",
-                keyValue: 9);
+            migrationBuilder.Sql("DELETE FROM [PlatformSettings] WHERE [Key] = N'AiCatalogPriceCheckEnabled'");
 
             migrationBuilder.DropColumn(
                 name: "AllowAiCatalogPriceCheck",