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>

scripts/refresh-chain138-command-center-meta.sh

@@ -0,0 +1,35 @@
+#!/usr/bin/env bash
+# Refresh chain138-command-center.meta.json before deploy (bundle version + optional route-matrix stamp).
+set -euo pipefail
+
+SCRIPT_DIR="$(cd "$(dirname "${BASH_SOURCE[0]}")" && pwd)"
+REPO_ROOT="$(cd "$SCRIPT_DIR/.." && pwd)"
+META="${REPO_ROOT}/frontend/public/chain138-command-center.meta.json"
+ROUTE_MATRIX="${REPO_ROOT}/config/aggregator-route-matrix.json"
+
+python3 - "$META" "$ROUTE_MATRIX" <<'PY'
+import json
+import sys
+from datetime import datetime, timezone
+from pathlib import Path
+
+meta_path = Path(sys.argv[1])
+route_matrix_path = Path(sys.argv[2])
+now = datetime.now(timezone.utc)
+route_updated = None
+if route_matrix_path.is_file():
+    try:
+        data = json.loads(route_matrix_path.read_text(encoding="utf-8"))
+        route_updated = data.get("updated") or data.get("generatedAt")
+    except (json.JSONDecodeError, OSError):
+        pass
+
+payload = {
+    "bundleVersion": now.strftime("%Y-%m-%d"),
+    "updatedAt": now.strftime("%Y-%m-%dT%H:%M:%SZ"),
+    "sourceDoc": "explorer-monorepo/docs/CHAIN138_VISUAL_TOPOLOGY_SOURCE.md",
+    "routeMatrixUpdated": route_updated,
+}
+meta_path.write_text(json.dumps(payload, indent=2) + "\n", encoding="utf-8")
+print(f"Updated {meta_path}")
+PY