feat(db): drop PersonDepartment enum and wire Person.teamId relation

prisma/migrations/20260625230055_drop_person_department_enum/migration.sql

@@ -0,0 +1,41 @@
+BEGIN;
+
+-- Seed legacy teams from the old PersonDepartment enum English display names.
+INSERT INTO "Team" ("id", "name", "createdAt", "updatedAt")
+VALUES
+  (gen_random_uuid(), 'IT', CURRENT_TIMESTAMP, CURRENT_TIMESTAMP),
+  (gen_random_uuid(), 'Engineering', CURRENT_TIMESTAMP, CURRENT_TIMESTAMP),
+  (gen_random_uuid(), 'Logistics', CURRENT_TIMESTAMP, CURRENT_TIMESTAMP),
+  (gen_random_uuid(), 'Traffic', CURRENT_TIMESTAMP, CURRENT_TIMESTAMP),
+  (gen_random_uuid(), 'Driver', CURRENT_TIMESTAMP, CURRENT_TIMESTAMP),
+  (gen_random_uuid(), 'Administration', CURRENT_TIMESTAMP, CURRENT_TIMESTAMP),
+  (gen_random_uuid(), 'Sales', CURRENT_TIMESTAMP, CURRENT_TIMESTAMP),
+  (gen_random_uuid(), 'Other', CURRENT_TIMESTAMP, CURRENT_TIMESTAMP)
+ON CONFLICT (lower("name")) DO NOTHING;
+
+-- Backfill Person.teamId from the legacy Person.department enum values.
+UPDATE "Person"
+SET "teamId" = (
+  SELECT "id" FROM "Team" WHERE lower("name") = lower(CASE "department"
+    WHEN 'IT' THEN 'IT'
+    WHEN 'ENGINEERING' THEN 'Engineering'
+    WHEN 'LOGISTICS' THEN 'Logistics'
+    WHEN 'TRAFFIC' THEN 'Traffic'
+    WHEN 'DRIVER' THEN 'Driver'
+    WHEN 'ADMINISTRATION' THEN 'Administration'
+    WHEN 'SALES' THEN 'Sales'
+    WHEN 'OTHER' THEN 'Other'
+  END)
+)
+WHERE "department" IS NOT NULL;
+
+-- Drop the legacy department index.
+DROP INDEX "Person_department_deletedAt_idx";
+
+-- Drop the legacy department column.
+ALTER TABLE "Person" DROP COLUMN "department";
+
+-- Drop the legacy enum type.
+DROP TYPE "PersonDepartment";
+
+COMMIT;

prisma/schema.prisma

@@ -110,22 +110,10 @@ model UserInvitation {
 // PEOPLE
 // ======================================================
 
-enum PersonDepartment {
-  IT
-  ENGINEERING
-  LOGISTICS
-  TRAFFIC
-  DRIVER
-  ADMINISTRATION
-  SALES
-  OTHER
-}
-
 model Person {
-  id         String            @id @default(uuid(7)) @db.Uuid
-  firstName  String
-  lastName   String
-  department PersonDepartment?
+  id        String @id @default(uuid(7)) @db.Uuid
+  firstName String
+  lastName  String
 
   email String?
   phone String?
@@ -143,7 +131,6 @@ model Person {
   assignments Assignment[]
 
   @@index([lastName, firstName])
-  @@index([department, deletedAt])
   @@index([teamId, deletedAt])
   @@index([teamId])
   @@index([deletedAt])