release: bump version to 0.58.0

Release 0.58.0 includes the Earth high-precision boundary PMTiles/MVT pipeline, standardized Earth boundary source collectors, China POV boundary configuration templates, and removal of the legacy low-precision GeoJSON fallback. It also adds Earth news target-location queueing/archive support, fixes datasource task status visibility, documents the Earth surface depth-spacing rules that prevent far-zoom z-fighting snow/black blocks, and updates bilingual operations/developer docs.

frontend/nginx.conf

@@ -50,6 +50,23 @@ server {
         try_files $uri =404;
     }
 
+    location = /earth/data/boundaries/v1/manifest.json {
+        add_header Cache-Control "no-store";
+        try_files $uri =404;
+    }
+
+    location ~ ^/earth/data/boundaries/.*\.pmtiles$ {
+        types { application/octet-stream pmtiles; }
+        add_header Accept-Ranges bytes;
+        add_header Cache-Control "public, max-age=31536000, immutable";
+        try_files $uri =404;
+    }
+
+    location /earth/data/boundaries/ {
+        add_header Cache-Control "public, max-age=31536000, immutable";
+        try_files $uri =404;
+    }
+
     location / {
         try_files $uri $uri/ /index.html;
     }