projects milestones

server/prisma/schema.prisma

@@ -583,12 +583,30 @@ model Project {
   shipment      Shipment? @relation(fields: [shipmentId], references: [id], onDelete: SetNull)
   owner         User? @relation("ProjectOwner", fields: [ownerId], references: [id], onDelete: SetNull)
   workOrders    WorkOrder[]
+  milestones    ProjectMilestone[]
 
   @@index([customerId, createdAt])
   @@index([ownerId, dueDate])
   @@index([status, priority])
 }
 
+model ProjectMilestone {
+  id          String   @id @default(cuid())
+  projectId   String
+  title       String
+  status      String
+  dueDate     DateTime?
+  completedAt DateTime?
+  notes       String
+  sortOrder   Int      @default(0)
+  createdAt   DateTime @default(now())
+  updatedAt   DateTime @updatedAt
+  project     Project  @relation(fields: [projectId], references: [id], onDelete: Cascade)
+
+  @@index([projectId, sortOrder])
+  @@index([projectId, dueDate])
+}
+
 model WorkOrder {
   id                String   @id @default(cuid())
   workOrderNumber   String   @unique