feat: authsession service

authsession/internal/ports/id_generator.go

@@ -0,0 +1,13 @@
+package ports
+
+import "galaxy/authsession/internal/domain/common"
+
+// IDGenerator generates stable domain identifiers for new challenges and
+// device sessions.
+type IDGenerator interface {
+	// NewChallengeID returns a fresh challenge identifier.
+	NewChallengeID() (common.ChallengeID, error)
+
+	// NewDeviceSessionID returns a fresh device-session identifier.
+	NewDeviceSessionID() (common.DeviceSessionID, error)
+}