Before → Refactoring → After Kette

Legacy Problem	Refactoring Schritt	Moderne Datei	Sicherheitsnetz
Monster Method im EJB	Command + Handler extrahieren	ProcessClaimDecisionHandler.java	Golden Master + Handler Test
Direkter File Share Zugriff	DocumentStoragePort einführen	FileShareDocumentStorageAdapter.java	Adapter Test
Status-if/else	Transition Policy	ClaimTransitionPolicy.java	Transition Policy Test
JMS direkt in Transaktion	Outbox	JdbcOutboxAdapter.java	Outbox Worker Test
JAAS direkt im Code	SecurityContextPort	LdapSecurityContextAdapter.java	Role Mapping Test