Exclude self_booked/denied/cancelled from professional services list

findByProfessional had no status filter, so blocked slots (self_booked)
and historical cancelled/denied services appeared in the active view.

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

backend/src/services/services.service.ts

@@ -195,7 +195,7 @@ export class ServicesService {
   async findByProfessional(userId: string, page = 1, limit = 20) {
     const prof = await this.prisma.professionals.findUnique({ where: { user_id: userId } });
     if (!prof) throw new NotFoundException('No eres un profesional');
-    const where = { professional_id: prof.id };
+    const where = { professional_id: prof.id, status: { notIn: ['self_booked', 'denied', 'cancelled'] as const } };
     const skip = (page - 1) * limit;
     const [data, total] = await Promise.all([
       this.prisma.services.findMany({