fix: refine treemap sizing and add earth bgp collectors

backend/app/api/v1/visualization.py

@@ -328,6 +328,29 @@ def convert_bgp_anomalies_to_geojson(records: List[BGPAnomaly]) -> Dict[str, Any
     return {"type": "FeatureCollection", "features": features}
 
 
+def convert_bgp_collectors_to_geojson() -> Dict[str, Any]:
+    features = []
+
+    for collector, location in sorted(RIPE_RIS_COLLECTOR_COORDS.items()):
+        features.append(
+            {
+                "type": "Feature",
+                "geometry": {
+                    "type": "Point",
+                    "coordinates": [location["longitude"], location["latitude"]],
+                },
+                "properties": {
+                    "collector": collector,
+                    "city": location.get("city"),
+                    "country": location.get("country"),
+                    "status": "online",
+                },
+            }
+        )
+
+    return {"type": "FeatureCollection", "features": features}
+
+
 # ============== API Endpoints ==============
 
 
@@ -553,6 +576,12 @@ async def get_bgp_anomalies_geojson(
     return {**geojson, "count": len(geojson.get("features", []))}
 
 
+@router.get("/geo/bgp-collectors")
+async def get_bgp_collectors_geojson():
+    geojson = convert_bgp_collectors_to_geojson()
+    return {**geojson, "count": len(geojson.get("features", []))}
+
+
 @router.get("/all")
 async def get_all_visualization_data(db: AsyncSession = Depends(get_db)):
     """获取所有可视化数据的统一端点