Initial commit: BI Agentes platform

Independent dashboard for CambioReal agents with local SQLite auth
and read-only RDS connection. Features login, per-agent transaction
filtering, KPIs, charts (Chart.js), and detailed transaction table.

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

src/db-rds.js

@@ -0,0 +1,15 @@
+/**
+ * MySQL pool — read-only no RDS (cambio_db)
+ */
+const mysql = require('mysql2/promise');
+
+const pool = mysql.createPool({
+  host: process.env.MYSQL_URL,
+  user: process.env.USER_MYSQL,
+  password: process.env.PW_MYSQL,
+  database: 'cambio_db',
+  waitForConnections: true,
+  connectionLimit: 10,
+});
+
+module.exports = pool;