diff --git a/1.8.1.zip b/1.8.1.zip
new file mode 100644
index 0000000..a75709b
Binary files /dev/null and b/1.8.1.zip differ
diff --git a/auth.php b/auth.php
new file mode 100644
index 0000000..33c67eb
--- /dev/null
+++ b/auth.php
@@ -0,0 +1,70 @@
+<?php
+session_start();
+
+// Benutzerdatenbank
+$valid_users = array(
+    'admin' => array(
+        'password' => 'Jennifer@1996+',
+        'access_level' => 'all'
+    ),
+    'Lager' => array(
+        'password' => 'MediaMarkt',
+        'access_level' => 'limited'
+    )
+);
+
+function authenticate($username, $password) {
+    global $valid_users;
+    
+    if (array_key_exists($username, $valid_users) && $valid_users[$username]['password'] === $password) {
+        $_SESSION['authenticated'] = true;
+        $_SESSION['username'] = $username;
+        $_SESSION['access_level'] = $valid_users[$username]['access_level'];
+        $_SESSION['last_activity'] = time(); // Zeitstempel für die letzte Aktion setzen
+        
+        // Weiterleitung basierend auf der Benutzerrolle
+        if ($_SESSION['access_level'] === 'all') {
+            header('Location: public/admin.php');
+            exit;
+        } elseif ($_SESSION['access_level'] === 'limited') {
+            header('Location: public/search.php');
+            exit;
+        }
+        
+        return true;
+    } else {
+        return false;
+    }
+}
+
+function is_authenticated() {
+    return isset($_SESSION['authenticated']) && $_SESSION['authenticated'] === true;
+}
+
+function require_login() {
+    if (!is_authenticated()) {
+        header('Location: public/search.php');
+        exit;
+    }
+}
+
+function require_admin_login() {
+    require_login();
+    if ($_SESSION['access_level'] !== 'all') {
+        header('Location: unauthorized.php');
+        exit;
+    }
+}
+
+function require_limited_access_login() {
+    require_login();
+    if ($_SESSION['access_level'] !== 'limited') {
+        header('Location: unauthorized.php');
+        exit;
+    }
+}
+
+function get_authenticated_username() {
+    return $_SESSION['username'] ?? null;
+}
+?>
diff --git a/composer.json b/composer.json
new file mode 100644
index 0000000..575065c
--- /dev/null
+++ b/composer.json
@@ -0,0 +1,7 @@
+{
+    "require": {
+        "picqer/php-barcode-generator": "^2.4",
+        "phpoffice/phpspreadsheet": "^2.0",
+        "tecnickcom/tcpdf": "^6.6"
+    }
+}
diff --git a/composer.lock b/composer.lock
new file mode 100644
index 0000000..a975cdb
--- /dev/null
+++ b/composer.lock
@@ -0,0 +1,1334 @@
+{
+    "_readme": [
+        "This file locks the dependencies of your project to a known state",
+        "Read more about it at https://getcomposer.org/doc/01-basic-usage.md#installing-dependencies",
+        "This file is @generated automatically"
+    ],
+    "content-hash": "83b969abfcb4b279ee99cdb65b473ab0",
+    "packages": [
+        {
+            "name": "maennchen/zipstream-php",
+            "version": "3.1.0",
+            "source": {
+                "type": "git",
+                "url": "https://github.com/maennchen/ZipStream-PHP.git",
+                "reference": "b8174494eda667f7d13876b4a7bfef0f62a7c0d1"
+            },
+            "dist": {
+                "type": "zip",
+                "url": "https://api.github.com/repos/maennchen/ZipStream-PHP/zipball/b8174494eda667f7d13876b4a7bfef0f62a7c0d1",
+                "reference": "b8174494eda667f7d13876b4a7bfef0f62a7c0d1",
+                "shasum": ""
+            },
+            "require": {
+                "ext-mbstring": "*",
+                "ext-zlib": "*",
+                "php-64bit": "^8.1"
+            },
+            "require-dev": {
+                "ext-zip": "*",
+                "friendsofphp/php-cs-fixer": "^3.16",
+                "guzzlehttp/guzzle": "^7.5",
+                "mikey179/vfsstream": "^1.6",
+                "php-coveralls/php-coveralls": "^2.5",
+                "phpunit/phpunit": "^10.0",
+                "vimeo/psalm": "^5.0"
+            },
+            "suggest": {
+                "guzzlehttp/psr7": "^2.4",
+                "psr/http-message": "^2.0"
+            },
+            "type": "library",
+            "autoload": {
+                "psr-4": {
+                    "ZipStream\\": "src/"
+                }
+            },
+            "notification-url": "https://packagist.org/downloads/",
+            "license": [
+                "MIT"
+            ],
+            "authors": [
+                {
+                    "name": "Paul Duncan",
+                    "email": "pabs@pablotron.org"
+                },
+                {
+                    "name": "Jonatan Männchen",
+                    "email": "jonatan@maennchen.ch"
+                },
+                {
+                    "name": "Jesse Donat",
+                    "email": "donatj@gmail.com"
+                },
+                {
+                    "name": "András Kolesár",
+                    "email": "kolesar@kolesar.hu"
+                }
+            ],
+            "description": "ZipStream is a library for dynamically streaming dynamic zip files from PHP without writing to the disk at all on the server.",
+            "keywords": [
+                "stream",
+                "zip"
+            ],
+            "support": {
+                "issues": "https://github.com/maennchen/ZipStream-PHP/issues",
+                "source": "https://github.com/maennchen/ZipStream-PHP/tree/3.1.0"
+            },
+            "funding": [
+                {
+                    "url": "https://github.com/maennchen",
+                    "type": "github"
+                },
+                {
+                    "url": "https://opencollective.com/zipstream",
+                    "type": "open_collective"
+                }
+            ],
+            "time": "2023-06-21T14:59:35+00:00"
+        },
+        {
+            "name": "markbaker/complex",
+            "version": "3.0.2",
+            "source": {
+                "type": "git",
+                "url": "https://github.com/MarkBaker/PHPComplex.git",
+                "reference": "95c56caa1cf5c766ad6d65b6344b807c1e8405b9"
+            },
+            "dist": {
+                "type": "zip",
+                "url": "https://api.github.com/repos/MarkBaker/PHPComplex/zipball/95c56caa1cf5c766ad6d65b6344b807c1e8405b9",
+                "reference": "95c56caa1cf5c766ad6d65b6344b807c1e8405b9",
+                "shasum": ""
+            },
+            "require": {
+                "php": "^7.2 || ^8.0"
+            },
+            "require-dev": {
+                "dealerdirect/phpcodesniffer-composer-installer": "dev-master",
+                "phpcompatibility/php-compatibility": "^9.3",
+                "phpunit/phpunit": "^7.0 || ^8.0 || ^9.0",
+                "squizlabs/php_codesniffer": "^3.7"
+            },
+            "type": "library",
+            "autoload": {
+                "psr-4": {
+                    "Complex\\": "classes/src/"
+                }
+            },
+            "notification-url": "https://packagist.org/downloads/",
+            "license": [
+                "MIT"
+            ],
+            "authors": [
+                {
+                    "name": "Mark Baker",
+                    "email": "mark@lange.demon.co.uk"
+                }
+            ],
+            "description": "PHP Class for working with complex numbers",
+            "homepage": "https://github.com/MarkBaker/PHPComplex",
+            "keywords": [
+                "complex",
+                "mathematics"
+            ],
+            "support": {
+                "issues": "https://github.com/MarkBaker/PHPComplex/issues",
+                "source": "https://github.com/MarkBaker/PHPComplex/tree/3.0.2"
+            },
+            "time": "2022-12-06T16:21:08+00:00"
+        },
+        {
+            "name": "markbaker/matrix",
+            "version": "3.0.1",
+            "source": {
+                "type": "git",
+                "url": "https://github.com/MarkBaker/PHPMatrix.git",
+                "reference": "728434227fe21be27ff6d86621a1b13107a2562c"
+            },
+            "dist": {
+                "type": "zip",
+                "url": "https://api.github.com/repos/MarkBaker/PHPMatrix/zipball/728434227fe21be27ff6d86621a1b13107a2562c",
+                "reference": "728434227fe21be27ff6d86621a1b13107a2562c",
+                "shasum": ""
+            },
+            "require": {
+                "php": "^7.1 || ^8.0"
+            },
+            "require-dev": {
+                "dealerdirect/phpcodesniffer-composer-installer": "dev-master",
+                "phpcompatibility/php-compatibility": "^9.3",
+                "phpdocumentor/phpdocumentor": "2.*",
+                "phploc/phploc": "^4.0",
+                "phpmd/phpmd": "2.*",
+                "phpunit/phpunit": "^7.0 || ^8.0 || ^9.0",
+                "sebastian/phpcpd": "^4.0",
+                "squizlabs/php_codesniffer": "^3.7"
+            },
+            "type": "library",
+            "autoload": {
+                "psr-4": {
+                    "Matrix\\": "classes/src/"
+                }
+            },
+            "notification-url": "https://packagist.org/downloads/",
+            "license": [
+                "MIT"
+            ],
+            "authors": [
+                {
+                    "name": "Mark Baker",
+                    "email": "mark@demon-angel.eu"
+                }
+            ],
+            "description": "PHP Class for working with matrices",
+            "homepage": "https://github.com/MarkBaker/PHPMatrix",
+            "keywords": [
+                "mathematics",
+                "matrix",
+                "vector"
+            ],
+            "support": {
+                "issues": "https://github.com/MarkBaker/PHPMatrix/issues",
+                "source": "https://github.com/MarkBaker/PHPMatrix/tree/3.0.1"
+            },
+            "time": "2022-12-02T22:17:43+00:00"
+        },
+        {
+            "name": "phpoffice/phpspreadsheet",
+            "version": "2.0.0",
+            "source": {
+                "type": "git",
+                "url": "https://github.com/PHPOffice/PhpSpreadsheet.git",
+                "reference": "4a77798f835119754961a97714f135826a323caa"
+            },
+            "dist": {
+                "type": "zip",
+                "url": "https://api.github.com/repos/PHPOffice/PhpSpreadsheet/zipball/4a77798f835119754961a97714f135826a323caa",
+                "reference": "4a77798f835119754961a97714f135826a323caa",
+                "shasum": ""
+            },
+            "require": {
+                "ext-ctype": "*",
+                "ext-dom": "*",
+                "ext-fileinfo": "*",
+                "ext-gd": "*",
+                "ext-iconv": "*",
+                "ext-libxml": "*",
+                "ext-mbstring": "*",
+                "ext-simplexml": "*",
+                "ext-xml": "*",
+                "ext-xmlreader": "*",
+                "ext-xmlwriter": "*",
+                "ext-zip": "*",
+                "ext-zlib": "*",
+                "maennchen/zipstream-php": "^2.1 || ^3.0",
+                "markbaker/complex": "^3.0",
+                "markbaker/matrix": "^3.0",
+                "php": "^8.0",
+                "psr/http-client": "^1.0",
+                "psr/http-factory": "^1.0",
+                "psr/simple-cache": "^1.0 || ^2.0 || ^3.0",
+                "voku/anti-xss": "^4.1"
+            },
+            "require-dev": {
+                "dealerdirect/phpcodesniffer-composer-installer": "dev-main",
+                "dompdf/dompdf": "^2.0",
+                "friendsofphp/php-cs-fixer": "^3.2",
+                "mitoteam/jpgraph": "^10.3",
+                "mpdf/mpdf": "^8.1.1",
+                "phpcompatibility/php-compatibility": "^9.3",
+                "phpstan/phpstan": "^1.1",
+                "phpstan/phpstan-phpunit": "^1.0",
+                "phpunit/phpunit": "^9.6",
+                "squizlabs/php_codesniffer": "^3.7",
+                "tecnickcom/tcpdf": "^6.5"
+            },
+            "suggest": {
+                "dompdf/dompdf": "Option for rendering PDF with PDF Writer",
+                "ext-intl": "PHP Internationalization Functions",
+                "mitoteam/jpgraph": "Option for rendering charts, or including charts with PDF or HTML Writers",
+                "mpdf/mpdf": "Option for rendering PDF with PDF Writer",
+                "tecnickcom/tcpdf": "Option for rendering PDF with PDF Writer"
+            },
+            "type": "library",
+            "autoload": {
+                "psr-4": {
+                    "PhpOffice\\PhpSpreadsheet\\": "src/PhpSpreadsheet"
+                }
+            },
+            "notification-url": "https://packagist.org/downloads/",
+            "license": [
+                "MIT"
+            ],
+            "authors": [
+                {
+                    "name": "Maarten Balliauw",
+                    "homepage": "https://blog.maartenballiauw.be"
+                },
+                {
+                    "name": "Mark Baker",
+                    "homepage": "https://markbakeruk.net"
+                },
+                {
+                    "name": "Franck Lefevre",
+                    "homepage": "https://rootslabs.net"
+                },
+                {
+                    "name": "Erik Tilt"
+                },
+                {
+                    "name": "Adrien Crivelli"
+                }
+            ],
+            "description": "PHPSpreadsheet - Read, Create and Write Spreadsheet documents in PHP - Spreadsheet engine",
+            "homepage": "https://github.com/PHPOffice/PhpSpreadsheet",
+            "keywords": [
+                "OpenXML",
+                "excel",
+                "gnumeric",
+                "ods",
+                "php",
+                "spreadsheet",
+                "xls",
+                "xlsx"
+            ],
+            "support": {
+                "issues": "https://github.com/PHPOffice/PhpSpreadsheet/issues",
+                "source": "https://github.com/PHPOffice/PhpSpreadsheet/tree/2.0.0"
+            },
+            "time": "2024-01-24T10:41:42+00:00"
+        },
+        {
+            "name": "picqer/php-barcode-generator",
+            "version": "v2.4.0",
+            "source": {
+                "type": "git",
+                "url": "https://github.com/picqer/php-barcode-generator.git",
+                "reference": "4cec18909dffd86e14beb69b1040f2520c2e1bb1"
+            },
+            "dist": {
+                "type": "zip",
+                "url": "https://api.github.com/repos/picqer/php-barcode-generator/zipball/4cec18909dffd86e14beb69b1040f2520c2e1bb1",
+                "reference": "4cec18909dffd86e14beb69b1040f2520c2e1bb1",
+                "shasum": ""
+            },
+            "require": {
+                "ext-mbstring": "*",
+                "php": "^7.3|^8.0"
+            },
+            "require-dev": {
+                "phpstan/phpstan": "^1.10",
+                "phpunit/phpunit": "^9.5"
+            },
+            "suggest": {
+                "ext-bcmath": "Barcode IMB (Intelligent Mail Barcode) needs bcmath extension",
+                "ext-gd": "For JPG and PNG generators, GD or Imagick is required",
+                "ext-imagick": "For JPG and PNG generators, GD or Imagick is required"
+            },
+            "type": "library",
+            "autoload": {
+                "psr-4": {
+                    "Picqer\\Barcode\\": "src"
+                }
+            },
+            "notification-url": "https://packagist.org/downloads/",
+            "license": [
+                "LGPL-3.0-or-later"
+            ],
+            "authors": [
+                {
+                    "name": "Nicola Asuni",
+                    "email": "info@tecnick.com",
+                    "homepage": "http://nicolaasuni.tecnick.com"
+                },
+                {
+                    "name": "Casper Bakker",
+                    "email": "info@picqer.com",
+                    "homepage": "https://picqer.com"
+                }
+            ],
+            "description": "An easy to use, non-bloated, barcode generator in PHP. Creates SVG, PNG, JPG and HTML images from the most used 1D barcode standards.",
+            "homepage": "https://github.com/picqer/php-barcode-generator",
+            "keywords": [
+                "CODABAR",
+                "Code11",
+                "Code93",
+                "EAN13",
+                "KIX",
+                "KIXCODE",
+                "MSI",
+                "POSTNET",
+                "Pharma",
+                "Standard 2 of 5",
+                "barcode",
+                "barcode generator",
+                "code128",
+                "code39",
+                "ean",
+                "html",
+                "jpeg",
+                "jpg",
+                "php",
+                "png",
+                "svg",
+                "upc"
+            ],
+            "support": {
+                "issues": "https://github.com/picqer/php-barcode-generator/issues",
+                "source": "https://github.com/picqer/php-barcode-generator/tree/v2.4.0"
+            },
+            "funding": [
+                {
+                    "url": "https://github.com/casperbakker",
+                    "type": "github"
+                }
+            ],
+            "time": "2023-09-16T08:58:52+00:00"
+        },
+        {
+            "name": "psr/http-client",
+            "version": "1.0.3",
+            "source": {
+                "type": "git",
+                "url": "https://github.com/php-fig/http-client.git",
+                "reference": "bb5906edc1c324c9a05aa0873d40117941e5fa90"
+            },
+            "dist": {
+                "type": "zip",
+                "url": "https://api.github.com/repos/php-fig/http-client/zipball/bb5906edc1c324c9a05aa0873d40117941e5fa90",
+                "reference": "bb5906edc1c324c9a05aa0873d40117941e5fa90",
+                "shasum": ""
+            },
+            "require": {
+                "php": "^7.0 || ^8.0",
+                "psr/http-message": "^1.0 || ^2.0"
+            },
+            "type": "library",
+            "extra": {
+                "branch-alias": {
+                    "dev-master": "1.0.x-dev"
+                }
+            },
+            "autoload": {
+                "psr-4": {
+                    "Psr\\Http\\Client\\": "src/"
+                }
+            },
+            "notification-url": "https://packagist.org/downloads/",
+            "license": [
+                "MIT"
+            ],
+            "authors": [
+                {
+                    "name": "PHP-FIG",
+                    "homepage": "https://www.php-fig.org/"
+                }
+            ],
+            "description": "Common interface for HTTP clients",
+            "homepage": "https://github.com/php-fig/http-client",
+            "keywords": [
+                "http",
+                "http-client",
+                "psr",
+                "psr-18"
+            ],
+            "support": {
+                "source": "https://github.com/php-fig/http-client"
+            },
+            "time": "2023-09-23T14:17:50+00:00"
+        },
+        {
+            "name": "psr/http-factory",
+            "version": "1.0.2",
+            "source": {
+                "type": "git",
+                "url": "https://github.com/php-fig/http-factory.git",
+                "reference": "e616d01114759c4c489f93b099585439f795fe35"
+            },
+            "dist": {
+                "type": "zip",
+                "url": "https://api.github.com/repos/php-fig/http-factory/zipball/e616d01114759c4c489f93b099585439f795fe35",
+                "reference": "e616d01114759c4c489f93b099585439f795fe35",
+                "shasum": ""
+            },
+            "require": {
+                "php": ">=7.0.0",
+                "psr/http-message": "^1.0 || ^2.0"
+            },
+            "type": "library",
+            "extra": {
+                "branch-alias": {
+                    "dev-master": "1.0.x-dev"
+                }
+            },
+            "autoload": {
+                "psr-4": {
+                    "Psr\\Http\\Message\\": "src/"
+                }
+            },
+            "notification-url": "https://packagist.org/downloads/",
+            "license": [
+                "MIT"
+            ],
+            "authors": [
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+                    "name": "PHP-FIG",
+                    "homepage": "https://www.php-fig.org/"
+                }
+            ],
+            "description": "Common interfaces for PSR-7 HTTP message factories",
+            "keywords": [
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+                "http",
+                "message",
+                "psr",
+                "psr-17",
+                "psr-7",
+                "request",
+                "response"
+            ],
+            "support": {
+                "source": "https://github.com/php-fig/http-factory/tree/1.0.2"
+            },
+            "time": "2023-04-10T20:10:41+00:00"
+        },
+        {
+            "name": "psr/http-message",
+            "version": "2.0",
+            "source": {
+                "type": "git",
+                "url": "https://github.com/php-fig/http-message.git",
+                "reference": "402d35bcb92c70c026d1a6a9883f06b2ead23d71"
+            },
+            "dist": {
+                "type": "zip",
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+                "reference": "402d35bcb92c70c026d1a6a9883f06b2ead23d71",
+                "shasum": ""
+            },
+            "require": {
+                "php": "^7.2 || ^8.0"
+            },
+            "type": "library",
+            "extra": {
+                "branch-alias": {
+                    "dev-master": "2.0.x-dev"
+                }
+            },
+            "autoload": {
+                "psr-4": {
+                    "Psr\\Http\\Message\\": "src/"
+                }
+            },
+            "notification-url": "https://packagist.org/downloads/",
+            "license": [
+                "MIT"
+            ],
+            "authors": [
+                {
+                    "name": "PHP-FIG",
+                    "homepage": "https://www.php-fig.org/"
+                }
+            ],
+            "description": "Common interface for HTTP messages",
+            "homepage": "https://github.com/php-fig/http-message",
+            "keywords": [
+                "http",
+                "http-message",
+                "psr",
+                "psr-7",
+                "request",
+                "response"
+            ],
+            "support": {
+                "source": "https://github.com/php-fig/http-message/tree/2.0"
+            },
+            "time": "2023-04-04T09:54:51+00:00"
+        },
+        {
+            "name": "psr/simple-cache",
+            "version": "3.0.0",
+            "source": {
+                "type": "git",
+                "url": "https://github.com/php-fig/simple-cache.git",
+                "reference": "764e0b3939f5ca87cb904f570ef9be2d78a07865"
+            },
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+                "phpstan/phpstan": "1.9.*@dev",
+                "phpstan/phpstan-strict-rules": "1.4.*@dev",
+                "phpunit/phpunit": "~6.0 || ~7.0 || ~9.0",
+                "thecodingmachine/phpstan-strict-rules": "1.0.*@dev",
+                "voku/phpstan-rules": "3.1.*@dev"
+            },
+            "suggest": {
+                "ext-ctype": "Use Ctype for e.g. hexadecimal digit detection",
+                "ext-fileinfo": "Use Fileinfo for better binary file detection",
+                "ext-iconv": "Use iconv for best performance",
+                "ext-intl": "Use Intl for best performance",
+                "ext-json": "Use JSON for string detection",
+                "ext-mbstring": "Use Mbstring for best performance"
+            },
+            "type": "library",
+            "autoload": {
+                "files": [
+                    "bootstrap.php"
+                ],
+                "psr-4": {
+                    "voku\\": "src/voku/"
+                }
+            },
+            "notification-url": "https://packagist.org/downloads/",
+            "license": [
+                "(Apache-2.0 or GPL-2.0)"
+            ],
+            "authors": [
+                {
+                    "name": "Nicolas Grekas",
+                    "email": "p@tchwork.com"
+                },
+                {
+                    "name": "Hamid Sarfraz",
+                    "homepage": "http://pageconfig.com/"
+                },
+                {
+                    "name": "Lars Moelleken",
+                    "homepage": "http://www.moelleken.org/"
+                }
+            ],
+            "description": "Portable UTF-8 library - performance optimized (unicode) string functions for php.",
+            "homepage": "https://github.com/voku/portable-utf8",
+            "keywords": [
+                "UTF",
+                "clean",
+                "php",
+                "unicode",
+                "utf-8",
+                "utf8"
+            ],
+            "support": {
+                "issues": "https://github.com/voku/portable-utf8/issues",
+                "source": "https://github.com/voku/portable-utf8/tree/6.0.13"
+            },
+            "funding": [
+                {
+                    "url": "https://www.paypal.me/moelleken",
+                    "type": "custom"
+                },
+                {
+                    "url": "https://github.com/voku",
+                    "type": "github"
+                },
+                {
+                    "url": "https://opencollective.com/portable-utf8",
+                    "type": "open_collective"
+                },
+                {
+                    "url": "https://www.patreon.com/voku",
+                    "type": "patreon"
+                },
+                {
+                    "url": "https://tidelift.com/funding/github/packagist/voku/portable-utf8",
+                    "type": "tidelift"
+                }
+            ],
+            "time": "2023-03-08T08:35:38+00:00"
+        }
+    ],
+    "packages-dev": [],
+    "aliases": [],
+    "minimum-stability": "stable",
+    "stability-flags": [],
+    "prefer-stable": false,
+    "prefer-lowest": false,
+    "platform": [],
+    "platform-dev": [],
+    "plugin-api-version": "2.6.0"
+}
diff --git a/index.php b/index.php
new file mode 100644
index 0000000..2e0d3ab
--- /dev/null
+++ b/index.php
@@ -0,0 +1,5 @@
+<?php
+// Weiterleitung zur search.php-Datei
+header("Location: /Logistik/public/search.php");
+exit;
+?>