The CSV-based roster import (mig 15+16 and scripts/import_csv_roster.py)
merged vehicle rows that differed only by _Track / _CAM suffix, dropping
the active fleet count from 144 to 124. Reverting the whole thing.
Mig 17 in one transaction:
- Re-splits devices by parsed plate from device_name (same regex as
mig 14, preserving _Track as separate vehicle)
- Restores serve.fn_live_view to its v3 body (no d.driver_name/phone
refs that would break once the columns are gone)
- Drops the six CSV-only columns from domain.devices
- Deletes schema_migrations rows for the deleted 15/16
- Logs final counts via RAISE NOTICE
Apply on VPS: psql -f db/migrations/20260601000017_rollback_csv_import.sql
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