47 PAD-US units (Aleutian/Bering-Sea BOEM marine features, all is_valid=False)
are stored as antimeridian-wrapping polygons whose bbox spans ~360 deg of
longitude. Their invalid planar geometry forms latitude bands that ST_Intersects
false-matches for non-US points (e.g. London/Germany at ~51N matched
"Rat Islands" ogc_fid 3974).
Fix: add `AND (ST_XMax(geom) - ST_XMin(geom)) < 60` to the lookup_landclass
SELECT. No DB writes; two cheap ST_XMax/XMin evals on the already
spatial-index-filtered result set. Verified live: total 651088 rows,
filtered 651041 (exactly 47 excluded); Yosemite/Grand Canyon retained,
London/Germany now empty.
Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
Integrates USGS PAD-US 4.0 (651k features) into a local PostGIS database
for point-in-polygon land ownership queries. Adds /api/landclass endpoint
returning classifications, public/private status, and management hierarchy.
- lib/landclass.py: connection pool, lookup_landclass(), domain label maps
- lib/api.py: GET /api/landclass?lat=&lon= (feature-flag gated)
- home.yaml: enable has_landclass flag
Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
