feat(schema): restore complete Ent schema files

ent/schema/audit_log.go

@@ -0,0 +1,59 @@
+// Package schema defines the Ent schema for domain entities.
+package schema
+
+import (
+	"time"
+
+	"entgo.io/ent"
+	"entgo.io/ent/schema/field"
+	"entgo.io/ent/schema/index"
+)
+
+// AuditLog holds the schema definition for the AuditLog entity.
+type AuditLog struct {
+	ent.Schema
+}
+
+// Fields of the AuditLog.
+func (AuditLog) Fields() []ent.Field {
+	return []ent.Field{
+		field.String("id").
+			Unique().
+			Immutable(),
+		field.String("user_id").
+			NotEmpty().
+			Comment("ID of the user/actor performing the action"),
+		field.String("action").
+			NotEmpty().
+			Comment("Action performed (e.g., user.create, user.update)"),
+		field.String("resource").
+			Optional().
+			Comment("Resource type (e.g., user, role)"),
+		field.String("resource_id").
+			Optional().
+			Comment("ID of the target resource"),
+		field.String("ip_address").
+			Optional().
+			Comment("IP address of the client"),
+		field.String("user_agent").
+			Optional().
+			Comment("User agent of the client"),
+		field.JSON("metadata", map[string]interface{}{}).
+			Optional().
+			Comment("Additional metadata as JSON"),
+		field.Time("timestamp").
+			Default(time.Now).
+			Immutable(),
+	}
+}
+
+// Indexes of the AuditLog.
+func (AuditLog) Indexes() []ent.Index {
+	return []ent.Index{
+		index.Fields("user_id"),
+		index.Fields("resource_id"),
+		index.Fields("timestamp"),
+		index.Fields("action"),
+		index.Fields("resource"),
+	}
+}