Module zone_naming 

Zone-name validation + builders for agent session zones.

Functions

agent_archive_zone

agent:<definition_id>:archive:<ts_ms>.

agent_current_zone

agent:<definition_id>:current. Panics in debug if definition_id is invalid; callers should check is_valid_definition_id first (or use validate_and_current) in release.

is_valid_definition_id

Returns true if s matches [A-Za-z0-9_-]+. Rejects empty.

validate_and_current

Convenience: validate + build the current-zone string. Returns Err with a stable error prefix on bad input so RPC callers see a consistent message.