Agent Skills: ibm-mainframe

Provides comprehensive IBM Mainframe administration, development, and modernization guidance including z/OS operations, JCL scripting, COBOL/PL/I programming, CICS/IMS configuration, DB2 administration, TSO/ISPF usage, system programming, batch processing, and mainframe-to-cloud migration strategies. Covers mainframe security (RACF, ACF2), performance tuning, capacity planning, disaster recovery, and DevOps integration. Use when working with mainframe systems, z/OS, JES2/JES3, VTAM, USS, or when users mention "mainframe", "z/OS", "MVS", "TSO", "ISPF", "JCL", "CICS", "IMS", "DB2 mainframe", "VSAM", "RACF", "mainframe modernization", "legacy mainframe", or "IBM z Systems".