nexgen v0.2.9

Added

• Add multiple proto messages to one WIT scaffold with repeated add-message --message, or select all messages in a descriptor-set proto file with --file.
• Go WIT generation supports workflow function name extractors, including registered Temporal workflow names.

Fixed

• Unify add-message and both add-rpc paths so reconciliation restores missing owned fields and declarations throughout reachable mapped records, validates linked records without editing dependencies, and detects oneof case drift while preserving intentional refinements.
• Preserve explicit proto field mappings when generated names do not round-trip; reject unrepresentable oneof member names instead of emitting an invalid mapping.
• Reconcile existing add-message WIT records with selected proto messages, restoring missing records and fields instead of silently returning unchanged output.