fix: Resolve CI typecheck failures and improve type safety

Fixes CI pipeline failures caused by missing Prisma Client generation and TypeScript type safety issues. Added Prisma generation step to CI pipeline, installed missing type dependencies, and resolved 40+ exactOptionalPropertyTypes violations across service layer.

Co-Authored-By: Claude Sonnet 4.5 <[email protected]>

apps/api/src/layouts/layouts.service.ts

@@ -105,7 +105,7 @@ export class LayoutsService {
           workspaceId,
           userId,
           isDefault: createLayoutDto.isDefault ?? false,
-          layout: createLayoutDto.layout as unknown as Prisma.JsonValue,
+          layout: createLayoutDto.layout as unknown as Prisma.InputJsonValue,
         },
       });
     });
@@ -141,13 +141,21 @@ export class LayoutsService {
         });
       }
 
+      // Build update data, handling layout field separately
+      const updateData: Prisma.UserLayoutUpdateInput = {};
+      if (updateLayoutDto.name !== undefined) updateData.name = updateLayoutDto.name;
+      if (updateLayoutDto.isDefault !== undefined) updateData.isDefault = updateLayoutDto.isDefault;
+      if (updateLayoutDto.layout !== undefined) {
+        updateData.layout = updateLayoutDto.layout as unknown as Prisma.InputJsonValue;
+      }
+
       return tx.userLayout.update({
         where: {
           id,
           workspaceId,
           userId,
         },
-        data: updateLayoutDto,
+        data: updateData,
       });
     });
   }