feat: publish standalone worker

Separate worker packaging and service lifecycle from the control plane.

app/models/concerns/soft_delete.go

@@ -0,0 +1,12 @@
+package concerns
+
+import (
+	"time"
+)
+
+// SoftDelete provides functionality.
+type SoftDelete struct {
+	DeletedAt *time.Time `gorm:"index" json:"-"`
+	DeleterID *int64     `gorm:"type:bigint REFERENCES users(id)" json:"-"`
+	// Deleter   *User      `json:"-"`
+}