fix(erp): enable erp pages and menu items

backend/internal/domain/document.go

@@ -0,0 +1,32 @@
+package domain
+
+import (
+	"time"
+
+	"github.com/google/uuid"
+)
+
+type Document struct {
+	ID            uuid.UUID  `json:"id" db:"id"`
+	TenantID      uuid.UUID  `json:"tenant_id" db:"tenant_id"`
+	ParentID      *uuid.UUID `json:"parent_id" db:"parent_id"`
+	Title         string     `json:"title" db:"title"`
+	Content       string     `json:"content" db:"content"` // JSON for blocks
+	Status        string     `json:"status" db:"status"`   // draft, published
+	CreatedBy     uuid.UUID  `json:"created_by" db:"created_by"`
+	LastUpdatedBy uuid.UUID  `json:"last_updated_by" db:"last_updated_by"`
+	Version       int        `json:"version" db:"version"`
+	CreatedAt     time.Time  `json:"created_at" db:"created_at"`
+	UpdatedAt     time.Time  `json:"updated_at" db:"updated_at"`
+}
+
+type DocumentActivity struct {
+	ID          uuid.UUID `json:"id" db:"id"`
+	DocumentID  uuid.UUID `json:"document_id" db:"document_id"`
+	TenantID    uuid.UUID `json:"tenant_id" db:"tenant_id"`
+	UserID      uuid.UUID `json:"user_id" db:"user_id"`
+	UserName    string    `json:"user_name" db:"user_name"` // For join
+	Action      string    `json:"action" db:"action"`
+	Description string    `json:"description" db:"description"`
+	CreatedAt   time.Time `json:"created_at" db:"created_at"`
+}