onlyworlds 0.107.2

• The schema pin moves to schema-dist v0.34.0-dist.109 (canonical 00.34.00 unchanged, so SCHEMA_VERSION is the same; no schema file moved). The calendar profile now refuses an era whose year_base is present and not 0 or 1, as its field table always said, and its fixture gains refuse-year-base-five (77 cases, 43 refusals). onlyworlds.calendar already refused such an era; the replayed fixture now holds it.