feat: project scaffolding, database schema, config

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

includes/config.php

@@ -0,0 +1,28 @@
+<?php
+// Database
+define('DB_HOST', 'localhost');
+define('DB_NAME', 'gestoria_lp');
+define('DB_USER', 'root');
+define('DB_PASS', '');
+
+// SMTP (Hostinger)
+define('SMTP_HOST', 'smtp.hostinger.com');
+define('SMTP_PORT', 465);
+define('SMTP_USER', 'contacto@gestorialp.com');
+define('SMTP_PASS', '');
+define('SMTP_FROM_NAME', 'Gestoría LP');
+
+// WhatsApp
+define('WHATSAPP_NUMBER', '521XXXXXXXXXX');
+
+// Encryption key for client credentials (32 bytes for AES-256)
+define('ENCRYPTION_KEY', 'CHANGE_THIS_TO_A_RANDOM_32_CHAR_KEY!');
+
+// Upload settings
+define('UPLOAD_DIR', __DIR__ . '/../uploads/');
+define('MAX_FILE_SIZE', 5 * 1024 * 1024); // 5MB
+define('ALLOWED_EXTENSIONS', ['pdf', 'jpg', 'jpeg', 'png', 'doc', 'docx']);
+
+// Site
+define('SITE_URL', 'https://gestorialp.com');
+define('SITE_NAME', 'Gestoría LP');

includes/db.php

@@ -0,0 +1,15 @@
+<?php
+require_once __DIR__ . '/config.php';
+
+function getDB(): PDO {
+    static $pdo = null;
+    if ($pdo === null) {
+        $dsn = 'mysql:host=' . DB_HOST . ';dbname=' . DB_NAME . ';charset=utf8mb4';
+        $pdo = new PDO($dsn, DB_USER, DB_PASS, [
+            PDO::ATTR_ERRMODE => PDO::ERRMODE_EXCEPTION,
+            PDO::ATTR_DEFAULT_FETCH_MODE => PDO::FETCH_ASSOC,
+            PDO::ATTR_EMULATE_PREPARES => false,
+        ]);
+    }
+    return $pdo;
+}