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-local.js

@@ -0,0 +1,26 @@
+/**
+ * SQLite local — controle de agentes (auth + config)
+ */
+const Database = require('better-sqlite3');
+const path = require('path');
+
+const DB_PATH = path.join(__dirname, '..', 'data', 'agentes.db');
+const db = new Database(DB_PATH);
+
+// WAL mode for better concurrency
+db.pragma('journal_mode = WAL');
+
+// Create tables
+db.exec(`
+  CREATE TABLE IF NOT EXISTS agentes (
+    id INTEGER PRIMARY KEY AUTOINCREMENT,
+    email TEXT UNIQUE NOT NULL,
+    senha_hash TEXT NOT NULL,
+    agente_id INTEGER NOT NULL,
+    nome TEXT NOT NULL,
+    ativo INTEGER DEFAULT 1,
+    created_at TEXT DEFAULT (datetime('now'))
+  )
+`);
+
+module.exports = db;