1 files changed, 18 insertions, 1 deletions
diff --git a/src/data/parks-geojson.ts b/src/data/parks-geojson.ts
index e12d297..9fd9d4f 100644
--- a/src/data/parks-geojson.ts
+++ b/src/data/parks-geojson.ts
@@ -20,6 +20,23 @@ function isHiddenUnlisted(props: any): boolean {
 const osmFeatures = ((osm as any).features ?? []).filter(
   (f: any) => !isHiddenUnlisted(f.properties),
 );
-const features = [...osmFeatures, ...((manual as any).features ?? [])];
+const manualFeatures = (manual as any).features ?? [];
+
+// 手入力ポリゴンでOSM側の形を置き換える公園（例: 道路で分かれた公園）。
+// QGISの属性 override=true、または import-manual-parks.py の --override-name で付く。
+const overrideNames = new Set(
+  manualFeatures
+    .filter((f: any) => {
+      const value = f?.properties?.override;
+      return value === true || value === 1 || value === "true" || value === "1";
+    })
+    .map((f: any) => f?.properties?.our_name)
+    .filter(Boolean),
+);
+
+const features = [
+  ...osmFeatures.filter((f: any) => !overrideNames.has(f.properties?.our_name)),
+  ...manualFeatures,
+];
 
 export default { type: "FeatureCollection", features };