Mirrors TPS's retain: y behaviour — when a mapping is applied, the extracted
value is also written to output_field so both the raw extraction and the
mapped result are available in transformed data.
Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
- Switch apply_transformations from regexp_match to regexp_matches with
ORDINALITY, enabling the g flag to return all occurrences as a JSONB array
- Aggregate matches directly to JSONB in lateral subquery to avoid
text[][] type errors when subscripting array_agg results
- Pass flags as proper third argument to regexp_matches/regexp_replace
instead of inline (?flags) prefix — the only way g works correctly
- Apply same fix to preview and test endpoints in rules.js
- Add migrate_tps.sql script for migrating data from TPS to Dataflow
Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
