feat(explorer): dual-chain wallet metadata, native coin pricing, and UI refresh.

Add Chain 138 wallet network metadata and stats coin-price enrichment; sync frontend explorer SPA, command center, and address/token pages with backend config.

Co-authored-by: Cursor <cursoragent@cursor.com>

.vscode/settings.json

@@ -0,0 +1,11 @@
+{
+  "go.useLanguageServer": true,
+  "go.toolsEnvVars": {
+    "GO111MODULE": "on"
+  },
+  "gopls": {
+    "build.env": {
+      "GO111MODULE": "on"
+    }
+  }
+}