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 <noreply@anthropic.com>

apps/api/src/domains/domains.service.ts

@@ -21,8 +21,10 @@ export class DomainsService {
     const domain = await this.prisma.domain.create({
       data: {
         name: createDomainDto.name,
-        description: createDomainDto.description,
-        color: createDomainDto.color,
+        slug: createDomainDto.slug,
+        description: createDomainDto.description ?? null,
+        color: createDomainDto.color ?? null,
+        icon: createDomainDto.icon ?? null,
         workspace: {
           connect: { id: workspaceId },
         },
@@ -53,9 +55,11 @@ export class DomainsService {
     const skip = (page - 1) * limit;
 
     // Build where clause
-    const where: Prisma.DomainWhereInput = {
-      workspaceId: query.workspaceId,
-    };
+    const where: Prisma.DomainWhereInput = query.workspaceId
+      ? {
+          workspaceId: query.workspaceId,
+        }
+      : {};
 
     // Add search filter if provided
     if (query.search) {
@@ -130,12 +134,24 @@ export class DomainsService {
       throw new NotFoundException(`Domain with ID ${id} not found`);
     }
 
+    // Build update data, only including defined fields
+    const updateData: Prisma.DomainUpdateInput = {};
+    if (updateDomainDto.name !== undefined) updateData.name = updateDomainDto.name;
+    if (updateDomainDto.slug !== undefined) updateData.slug = updateDomainDto.slug;
+    if (updateDomainDto.description !== undefined)
+      updateData.description = updateDomainDto.description;
+    if (updateDomainDto.color !== undefined) updateData.color = updateDomainDto.color;
+    if (updateDomainDto.icon !== undefined) updateData.icon = updateDomainDto.icon;
+    if (updateDomainDto.metadata !== undefined) {
+      updateData.metadata = updateDomainDto.metadata as unknown as Prisma.InputJsonValue;
+    }
+
     const domain = await this.prisma.domain.update({
       where: {
         id,
         workspaceId,
       },
-      data: updateDomainDto,
+      data: updateData,
       include: {
         _count: {
           select: { tasks: true, events: true, projects: true, ideas: true },