feat: Introduce base entity structure and update DTOs for Activity, Company, User, and TimeEntry

backend/internal/domain/entities/activity.go

@@ -5,7 +5,7 @@ import (
 )
 
 type Activity struct {
-	ID          ulid.ULID
+	EntityBase
 	Name        string
 	BillingRate float64
 }

backend/internal/domain/entities/base.go

@@ -0,0 +1,14 @@
+package entities
+
+import (
+	"time"
+
+	"github.com/oklog/ulid/v2"
+)
+
+type EntityBase struct {
+	ID           ulid.ULID
+	CreatedAt    time.Time
+	UpdatedAt    time.Time
+	LastEditorID ulid.ULID
+}

backend/internal/domain/entities/company.go

@@ -3,7 +3,7 @@ package entities
 import "github.com/oklog/ulid/v2"
 
 type Company struct {
-	ID   ulid.ULID
+	EntityBase
 	Name string
 }
 

backend/internal/domain/entities/timeentry.go

@@ -7,7 +7,7 @@ import (
 )
 
 type TimeEntry struct {
-	ID          ulid.ULID
+	EntityBase
 	UserID      int
 	ProjectID   int
 	ActivityID  int

backend/internal/domain/entities/user.go

@@ -3,7 +3,7 @@ package entities
 import "github.com/oklog/ulid/v2"
 
 type User struct {
-	ID         ulid.ULID
+	EntityBase
 	Username   string
 	Password   string
 	Role       string