Traces <clinit> bytecode to find ldc/putstatic pairs that map enum field names to display name strings. Pattern: new X, dup, ldc "English", invokespecial X.<init>, putstatic X.a. Proven on Dune UHD JAR: aw.a="English", aw.b="French", etc. Next: trace mapping class (ISO code → enum field) to complete the chain.