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README.md

@@ -42,6 +42,7 @@ reproject it directly without re-deriving from centroid+area.
 | centroid_lat | float64 | polygon centroid latitude (WGS84) |
 | area_km2 | float64 | polygon area in km² (Web Mercator, accurate at mid-latitudes) |
 | tags | list(string) | OSM `key=value` tags |
+| matched_tag | string | the first tag in `tags` that hit the whitelist filter (the reason the polygon survived) |
 | continent | string | Natural Earth admin0 lookup of the centroid |
 | size_bin | string | "small" (0.1-1), "medium" (1-10), or "large" (10-100) km² |
 | country | string | ISO-style country name |
@@ -54,7 +55,7 @@ reproject it directly without re-deriving from centroid+area.
 
 - Pipeline version: v0.1.0
 - Git SHA: 00a20a2
-- Built: 2026-06-30T15:42:28.588550
+- Built: 2026-06-30T17:52:59.311248
 - Source: Geofabrik regional extracts (`https://download.geofabrik.de/`)
 - Whitelist: 22,075 OSM `key=value` tags from osm-stats (see
   `docs/whitelist_decisions.md` in the project repo)
@@ -88,7 +89,7 @@ Each polygon in this dataset has passed three filters:
 - faroe-islands: 1,278 polygons (clean)
 - finland: 427,870 polygons (clean)
 - france: 492,538 polygons (clean)
-- germany: 967,879 polygons (killed)
+- germany: 1,131,888 polygons (killed)
 - greece: 45,142 polygons (clean)
 - guernsey-jersey: 670 polygons (clean)
 - hungary: 77,569 polygons (clean)