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.

backend/app/core/datasource_defaults.py

@@ -257,6 +257,56 @@ DEFAULT_DATASOURCES = {
         "credential_provider": "aisstream",
         "credential_status": "supported",
     },
+    "earth_admin0_boundaries": {
+        "id": 29,
+        "name": "Earth Admin-0 Boundaries",
+        "display_name": "Earth Admin-0 国界源",
+        "module": "L3",
+        "priority": "P1",
+        "frequency_minutes": 10080,
+        "is_free": True,
+        "requires_credentials": False,
+    },
+    "earth_coastline": {
+        "id": 30,
+        "name": "Earth Coastline",
+        "display_name": "Earth 海岸线源",
+        "module": "L3",
+        "priority": "P1",
+        "frequency_minutes": 10080,
+        "is_free": True,
+        "requires_credentials": False,
+    },
+    "earth_claim_lines": {
+        "id": 31,
+        "name": "Earth Claim Lines",
+        "display_name": "Earth 主张线源",
+        "module": "L3",
+        "priority": "P1",
+        "frequency_minutes": 10080,
+        "is_free": True,
+        "requires_credentials": False,
+    },
+    "earth_boundary_tiles": {
+        "id": 32,
+        "name": "Earth PMTiles Builder",
+        "display_name": "Earth PMTiles 构建器",
+        "module": "L3",
+        "priority": "P1",
+        "frequency_minutes": 10080,
+        "is_free": True,
+        "requires_credentials": False,
+    },
+    "media_news_archive": {
+        "id": 33,
+        "name": "Media News Archive",
+        "display_name": "媒体新闻归档",
+        "module": "L4",
+        "priority": "P2",
+        "frequency_minutes": 720,
+        "is_free": True,
+        "requires_credentials": False,
+    },
 }
 
 ID_TO_COLLECTOR = {info["id"]: name for name, info in DEFAULT_DATASOURCES.items()}