Migrate teams backend from Django to Express + Apollo Server + Prisma

Replace Django/Graphene stack with TypeScript Express server using Apollo Server v4
with 4 GraphQL endpoints (public/user/team/m2m) and Prisma ORM mapped to existing tables.

prisma/schema.prisma

@@ -0,0 +1,132 @@
+generator client {
+  provider = "prisma-client-js"
+}
+
+datasource db {
+  provider = "postgresql"
+  url      = env("TEAMS_DATABASE_URL")
+}
+
+model Team {
+  id                    Int      @id @default(autoincrement())
+  uuid                  String   @unique @default(uuid())
+  name                  String   @db.VarChar(200)
+  teamType              String   @default("BUYER") @map("team_type") @db.VarChar(20)
+  logtoOrgId            String?  @map("logto_org_id") @db.VarChar(100)
+  ownerId               Int?     @map("owner_id")
+  owner                 User?    @relation(fields: [ownerId], references: [id])
+  selectedLocationType  String?  @map("selected_location_type") @db.VarChar(20)
+  selectedLocationUuid  String?  @map("selected_location_uuid") @db.VarChar(100)
+  selectedLocationName  String?  @map("selected_location_name") @db.VarChar(255)
+  selectedLocationLat   Float?   @map("selected_location_lat")
+  selectedLocationLon   Float?   @map("selected_location_lon")
+  createdAt             DateTime @default(now()) @map("created_at")
+  updatedAt             DateTime @updatedAt @map("updated_at")
+
+  members     TeamMember[]
+  invitations TeamInvitation[]
+  addresses   TeamAddress[]
+  profiles    UserProfile[]    @relation("ActiveTeam")
+
+  @@map("teams_app_team")
+}
+
+model User {
+  id        Int      @id @default(autoincrement())
+  password  String   @default("") @db.VarChar(128)
+  username  String   @unique @db.VarChar(150)
+  firstName String   @default("") @map("first_name") @db.VarChar(150)
+  lastName  String   @default("") @map("last_name") @db.VarChar(150)
+  email     String   @default("") @db.VarChar(254)
+  isActive  Boolean  @default(true) @map("is_active")
+  dateJoined DateTime @default(now()) @map("date_joined")
+  isSuperuser Boolean @default(false) @map("is_superuser")
+  isStaff    Boolean @default(false) @map("is_staff")
+  lastLogin  DateTime? @map("last_login")
+
+  profile    UserProfile?
+  teams      Team[]
+  memberships TeamMember[]
+
+  @@map("auth_user")
+}
+
+model UserProfile {
+  id          Int      @id @default(autoincrement())
+  userId      Int      @unique @map("user_id")
+  user        User     @relation(fields: [userId], references: [id])
+  logtoId     String   @unique @map("logto_id") @db.VarChar(255)
+  avatarId    String?  @map("avatar_id") @db.VarChar(255)
+  phone       String   @default("") @db.VarChar(50)
+  activeTeamId Int?    @map("active_team_id")
+  activeTeam  Team?    @relation("ActiveTeam", fields: [activeTeamId], references: [id])
+  createdAt   DateTime @default(now()) @map("created_at")
+  updatedAt   DateTime @updatedAt @map("updated_at")
+
+  @@map("teams_app_userprofile")
+}
+
+model TeamMember {
+  id       Int      @id @default(autoincrement())
+  uuid     String   @unique @default(uuid())
+  teamId   Int      @map("team_id")
+  team     Team     @relation(fields: [teamId], references: [id])
+  userId   Int?     @map("user_id")
+  user     User?    @relation(fields: [userId], references: [id])
+  role     String   @default("MEMBER") @db.VarChar(20)
+  joinedAt DateTime @default(now()) @map("joined_at")
+
+  @@unique([teamId, userId])
+  @@map("teams_app_teammember")
+}
+
+model TeamInvitation {
+  id        Int      @id @default(autoincrement())
+  uuid      String   @unique @default(uuid())
+  teamId    Int      @map("team_id")
+  team      Team     @relation(fields: [teamId], references: [id])
+  email     String   @db.VarChar(254)
+  role      String   @default("MEMBER") @db.VarChar(20)
+  status    String   @default("PENDING") @db.VarChar(20)
+  invitedBy String   @default("") @map("invited_by") @db.VarChar(255)
+  expiresAt DateTime? @map("expires_at")
+  createdAt DateTime @default(now()) @map("created_at")
+
+  tokens TeamInvitationToken[]
+
+  @@unique([teamId, email])
+  @@map("teams_app_teaminvitation")
+}
+
+model TeamInvitationToken {
+  id             Int      @id @default(autoincrement())
+  uuid           String   @unique @default(uuid())
+  invitationId   Int      @map("invitation_id")
+  invitation     TeamInvitation @relation(fields: [invitationId], references: [id])
+  tokenHash      String   @unique @map("token_hash") @db.VarChar(255)
+  workflowStatus String   @default("pending") @map("workflow_status") @db.VarChar(20)
+  expiresAt      DateTime? @map("expires_at")
+  createdAt      DateTime @default(now()) @map("created_at")
+
+  @@map("teams_app_teaminvitationtoken")
+}
+
+model TeamAddress {
+  id           Int       @id @default(autoincrement())
+  uuid         String    @unique @default(uuid())
+  teamId       Int       @map("team_id")
+  team         Team      @relation(fields: [teamId], references: [id])
+  name         String    @db.VarChar(255)
+  address      String
+  latitude     Float?
+  longitude    Float?
+  countryCode  String    @default("") @map("country_code") @db.VarChar(10)
+  isDefault    Boolean   @default(false) @map("is_default")
+  status       String    @default("pending") @db.VarChar(20)
+  processedAt  DateTime? @map("processed_at")
+  errorMessage String?   @map("error_message")
+  createdAt    DateTime  @default(now()) @map("created_at")
+  updatedAt    DateTime  @updatedAt @map("updated_at")
+
+  @@map("teams_app_teamaddress")
+}