c4876410ea
Adds INT[] column + GIN index to support 89-code regions (Plan 6). region_mask/region_mode kept for backward-compat (DEPRECATED, removal in Plan 6.5). Empty array semantically equivalent to legacy region_mask=255 (all of Russia). Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>