P0 prod 500 (GlitchTip backend, deploy #135+ on main): endpoint queried
cad_parcels.area_m2 and cad_parcels.land_category, but the table only has
(cad_num, geom). PR #336 (SF-B1) shipped with wrong column assumption.
Repro:
curl 'https://gendsgn.ru/api/v1/parcels/by-bbox?min_lat=...&min_lon=...' -> 500
ProgrammingError: column p.area_m2 does not exist
Fix: compute area from geometry via ST_Area(p.geom::geography) (meter accuracy
on a geography cast), return NULL::text for land_category until EGRN enrichment
is wired (tracking: B5 EGRN contract follow-up).
Verified inline through postgres MCP: SQL returns expected rows
(66:41:0001001:18 area 2945931 m^2, etc.) on production schema.
