refactor(data): 升级至 v3.0 多级拓扑目录并引入 map.json 全球索引

data/map.json

@@ -0,0 +1,34 @@
+{
+  "version": "3.0.0",
+  "updated_at": "2026-04-09",
+  "countries": [
+    {
+      "id": "US",
+      "name": "United States (美国)",
+      "keyword_file": "kw_US.txt",
+      "states": [
+        {
+          "id": "CA",
+          "name": "California (加州)",
+          "cities": [
+            { "id": "Los_Angeles", "name": "Los Angeles (洛杉矶)" }
+          ]
+        }
+      ]
+    },
+    {
+      "id": "JP",
+      "name": "Japan (日本)",
+      "keyword_file": "kw_JP.txt",
+      "states": [
+        {
+          "id": "Default",
+          "name": "Default State",
+          "cities": [
+            { "id": "Tokyo", "name": "Tokyo (东京)" }
+          ]
+        }
+      ]
+    }
+  ]
+}

data/regions/US/CA/Los_Angeles.json

@@ -1,5 +1,5 @@
 {
-  "region_name": "美国 (美西)",
+  "region_name": "United States - Los Angeles",
   "google_module": {
     "base_lat": 34.0522,
     "base_lon": -118.2437,