fix: HTR token seed migration (#367)

Author: luislhl

db/seeders/20250416132150-add-htr-token.js

@@ -2,6 +2,16 @@
 
 module.exports = {
   up: async (queryInterface) => {
+    // Check if HTR token already exists
+    const [existing] = await queryInterface.sequelize.query(
+      "SELECT id FROM token WHERE id = '00'"
+    );
+
+    if (existing.length > 0) {
+      console.log('HTR token already exists, skipping.');
+      return;
+    }
+
     // Count unique transactions for HTR
     const [results] = await queryInterface.sequelize.query(
       "SELECT COUNT(DISTINCT tx_id) AS count FROM tx_output WHERE token_id = '00'"
@@ -14,6 +24,7 @@ module.exports = {
       name: 'Hathor',
       symbol: 'HTR',
       transactions: htrTxCount,
+      version: 0, // TokenVersion.NATIVE
     }]);
   },