feat: add company management and manager role support

Co-authored-by: factory-droid[bot] <138933559+factory-droid[bot]@users.noreply.github.com>

web/prisma/schema.prisma

@@ -70,6 +70,26 @@ model TeamMember {
   @@id([teamId, userId])
 }
 
+model Company {
+  id          String   @id @default(cuid())
+  tenantId    String
+  name        String
+  slug        String
+  cnpj        String?
+  domain      String?
+  phone       String?
+  description String?
+  address     String?
+  createdAt   DateTime @default(now())
+  updatedAt   DateTime @updatedAt
+
+  users   User[]
+  tickets Ticket[]
+
+  @@unique([tenantId, slug])
+  @@index([tenantId, name])
+}
+
 model User {
   id             String            @id @default(cuid())
   tenantId       String
@@ -78,6 +98,7 @@ model User {
   role           UserRole
   timezone       String            @default("America/Sao_Paulo")
   avatarUrl      String?
+  companyId      String?
   teams          TeamMember[]
   requestedTickets Ticket[]        @relation("TicketRequester")
   assignedTickets  Ticket[]        @relation("TicketAssignee")
@@ -85,7 +106,10 @@ model User {
   createdAt      DateTime          @default(now())
   updatedAt      DateTime          @updatedAt
 
+  company Company? @relation(fields: [companyId], references: [id])
+
   @@index([tenantId, role])
+  @@index([tenantId, companyId])
 }
 
 model Queue {
@@ -116,6 +140,7 @@ model Ticket {
   requesterId    String
   assigneeId     String?
   slaPolicyId    String?
+  companyId      String?
   dueAt          DateTime?
   firstResponseAt DateTime?
   resolvedAt     DateTime?
@@ -127,12 +152,14 @@ model Ticket {
   assignee  User? @relation("TicketAssignee", fields: [assigneeId], references: [id])
   queue     Queue? @relation(fields: [queueId], references: [id])
   slaPolicy SlaPolicy? @relation(fields: [slaPolicyId], references: [id])
+  company   Company? @relation(fields: [companyId], references: [id])
   events    TicketEvent[]
   comments  TicketComment[]
 
   @@index([tenantId, status])
   @@index([tenantId, queueId])
   @@index([tenantId, assigneeId])
+  @@index([tenantId, companyId])
 }
 
 model TicketEvent {