getConnection(); $steps = [ "ALTER TABLE lab_pacientes ADD COLUMN IF NOT EXISTS origen VARCHAR(20) NOT NULL DEFAULT 'manual' COMMENT 'Origen: manual | lab | whatsapp' AFTER notas_admin", "UPDATE lab_pacientes SET origen = 'whatsapp' WHERE user_id IS NOT NULL AND origen = 'manual'", "CREATE INDEX IF NOT EXISTS idx_pac_origen ON lab_pacientes (origen)", ]; echo '
';
foreach ($steps as $sql) {
    echo htmlspecialchars(substr($sql, 0, 80)) . "...\n";
    try {
        $pdo->exec($sql);
        echo "  ✓ OK\n\n";
    } catch (\Throwable $e) {
        echo "  ✗ ERROR: " . htmlspecialchars($e->getMessage()) . "\n\n";
    }
}
echo "Listo.\n
";