This package includes a Volume2Gym symbolic adapter generated from the proof-cycle training tasks and extracted source rule schema. The adapter is transparent rather than neural: adapter_config.json records the trainer and source contract, while adapter_weights.json records rule, action, procedure, condition, and terminology weights.

The adapter answers source-grounded technical scenarios as structured JSON plus a final natural-language answer. It cites applicable rules, includes mandatory safety actions, avoids forbidden unsafe actions, preserves procedure order, and uses domain terminology.

This artifact is not a certified operating assistant and is not railroad-specific as a method. It is an auditable proof adapter for the Volume2Gym loop across manuals, textbooks, repair guides, codes, and technical volumes.