setup prisma orm

_common/db_client/prisma/schema.prisma

@@ -0,0 +1,65 @@
+generator dartClient {
+  provider = "dart run orm"
+  output   = "../../../backend_dart/lib/infrastructure/persistence"
+}
+
+generator goClient {
+  provider = "go run github.com/steebchen/prisma-client-go"
+  output   = "../../../backend-go/internal/infrastructure/persistence"
+}
+
+datasource db {
+  provider = "postgresql"
+  url      = env("DATABASE_URL")
+}
+
+// User Model
+model User {
+  id          String      @id @default(uuid())
+  name        String
+  email       String      @unique
+  password    String
+  projects    Project[] // Beziehung zu Projekten
+  timeEntries TimeEntry[] // Beziehung zu Zeiteinträgen
+  createdAt   DateTime    @default(now())
+  updatedAt   DateTime    @updatedAt
+}
+
+// Project Model
+model Project {
+  id          String      @id @default(uuid())
+  name        String
+  description String?
+  clientId    String?
+  tasks       Task[] // Beziehung zu Aufgaben
+  timeEntries TimeEntry[] // Beziehung zu Zeiteinträgen
+  user        User        @relation(fields: [userId], references: [id])
+  userId      String
+  createdAt   DateTime    @default(now())
+  updatedAt   DateTime    @updatedAt
+}
+
+// TimeEntry Model
+model TimeEntry {
+  id          String   @id @default(uuid())
+  startTime   DateTime
+  endTime     DateTime
+  description String?
+  user        User     @relation(fields: [userId], references: [id])
+  userId      String
+  project     Project  @relation(fields: [projectId], references: [id])
+  projectId   String
+  createdAt   DateTime @default(now())
+  updatedAt   DateTime @updatedAt
+}
+
+// Task Model (optional)
+model Task {
+  id          String   @id @default(uuid())
+  name        String
+  description String?
+  project     Project  @relation(fields: [projectId], references: [id])
+  projectId   String
+  createdAt   DateTime @default(now())
+  updatedAt   DateTime @updatedAt
+}