chore: set PHPStan to level 5 with baseline

.phive/phars.xml

 <?xml version="1.0" encoding="UTF-8"?>
 <phive xmlns="https://phar.io/phive">
-  <phar name="phpstan" version="1.11.1" installed="1.11.1" location="./tools/phpstan" copy="false"/>
+  <phar name="phpstan" version="1.11.8" installed="1.11.8" location="./tools/phpstan" copy="false"/>
   <phar name="phpunit" version="^10.5.20" installed="10.5.20" location="./tools/phpunit" copy="false"/>
   <phar name="phpcs" version="^3.10.1" installed="3.10.1" location="./tools/phpcs" copy="false"/>
   <phar name="phpcbf" version="^3.10.1" installed="3.10.1" location="./tools/phpcbf" copy="false"/>

phpstan-baseline.neon

+parameters:
+	ignoreErrors:
+		-
+			message: "#^Else branch is unreachable because previous condition is always true\\.$#"
+			count: 1
+			path: ajax/calcBruttoPrice.php
+
+		-
+			message: "#^Elseif branch is unreachable because previous condition is always true\\.$#"
+			count: 1
+			path: ajax/calcBruttoPrice.php
+
+		-
+			message: "#^Instanceof between \\*NEVER\\* and QUI\\\\ERP\\\\Tax\\\\TaxEntry will always evaluate to false\\.$#"
+			count: 1
+			path: ajax/calcBruttoPrice.php
+
+		-
+			message: "#^Binary operation \"\\*\" between string and \\(float\\|int\\) results in an error\\.$#"
+			count: 1
+			path: ajax/calcNettoPrice.php
+
+		-
+			message: "#^Else branch is unreachable because previous condition is always true\\.$#"
+			count: 1
+			path: ajax/calcNettoPrice.php
+
+		-
+			message: "#^Elseif branch is unreachable because previous condition is always true\\.$#"
+			count: 1
+			path: ajax/calcNettoPrice.php
+
+		-
+			message: "#^Instanceof between \\*NEVER\\* and QUI\\\\ERP\\\\Tax\\\\TaxEntry will always evaluate to false\\.$#"
+			count: 1
+			path: ajax/calcNettoPrice.php
+
+		-
+			message: "#^Parameter \\#1 \\$string of function substr expects string, float given\\.$#"
+			count: 1
+			path: ajax/calcNettoPrice.php
+
+		-
+			message: "#^Parameter \\#2 \\$string of function explode expects string, float given\\.$#"
+			count: 1
+			path: ajax/calcNettoPrice.php
+
+		-
+			message: "#^Method QUI\\\\ERP\\\\ErpEntityInterface\\:\\:getCustomerFiles\\(\\) invoked with 1 parameter, 0 required\\.$#"
+			count: 1
+			path: ajax/customerFiles/getFiles.php
+
+		-
+			message: "#^Parameter \\#9 \\$attachedMediaFiles of static method QUI\\\\ERP\\\\Output\\\\Output\\:\\:sendPdfViaMail\\(\\) expects array\\<QUI\\\\Projects\\\\Media\\\\File\\|QUI\\\\Projects\\\\Media\\\\Image\\>, array\\<int\\<0, max\\>, QUI\\\\Interfaces\\\\Projects\\\\Media\\\\File\\> given\\.$#"
+			count: 1
+			path: ajax/output/sendMail.php
+
+		-
+			message: "#^Call to static method getInstance\\(\\) on an unknown class QUI\\\\ERP\\\\Accounting\\\\Invoice\\\\Handler\\.$#"
+			count: 1
+			path: src/QUI/ERP/Accounting/Calc.php
+
+		-
+			message: "#^Offset 0 on array\\<string, mixed\\> in isset\\(\\) does not exist\\.$#"
+			count: 1
+			path: src/QUI/ERP/Accounting/Calc.php
+
+		-
+			message: "#^Offset 0 on array\\<string, string\\> in isset\\(\\) does not exist\\.$#"
+			count: 1
+			path: src/QUI/ERP/Accounting/Calc.php
+
+		-
+			message: "#^Parameter \\$Invoice of method QUI\\\\ERP\\\\Accounting\\\\Calc\\:\\:calculateInvoicePayments\\(\\) has invalid type QUI\\\\ERP\\\\Accounting\\\\Invoice\\\\Invoice\\.$#"
+			count: 2
+			path: src/QUI/ERP/Accounting/Calc.php
+
+		-
+			message: "#^Parameter \\#1 \\$code of method QUI\\\\Interfaces\\\\Users\\\\User\\:\\:activate\\(\\) expects string, false given\\.$#"
+			count: 1
+			path: src/QUI/ERP/Manufacturers.php
+
+		-
+			message: "#^Strict comparison using \\=\\=\\= between mixed and '' will always evaluate to false\\.$#"
+			count: 2
+			path: src/QUI/ERP/Manufacturers.php
+
+		-
+			message: "#^Call to method createPDF\\(\\) on an unknown class QUI\\\\HtmlToPdf\\\\Document\\.$#"
+			count: 1
+			path: src/QUI/ERP/Output/Output.php
+
+		-
+			message: "#^Method QUI\\\\ERP\\\\Output\\\\Output\\:\\:getDocumentPdf\\(\\) has invalid return type QUI\\\\HtmlToPdf\\\\Document\\.$#"
+			count: 2
+			path: src/QUI/ERP/Output/Output.php
+
+		-
+			message: "#^Call to method setContentHTML\\(\\) on an unknown class QUI\\\\HtmlToPdf\\\\Document\\.$#"
+			count: 1
+			path: src/QUI/ERP/Output/OutputTemplate.php
+
+		-
+			message: "#^Call to method setFooterHTML\\(\\) on an unknown class QUI\\\\HtmlToPdf\\\\Document\\.$#"
+			count: 1
+			path: src/QUI/ERP/Output/OutputTemplate.php
+
+		-
+			message: "#^Call to method setHeaderHTML\\(\\) on an unknown class QUI\\\\HtmlToPdf\\\\Document\\.$#"
+			count: 1
+			path: src/QUI/ERP/Output/OutputTemplate.php
+
+		-
+			message: "#^Instantiated class QUI\\\\HtmlToPdf\\\\Document not found\\.$#"
+			count: 1
+			path: src/QUI/ERP/Output/OutputTemplate.php
+
+		-
+			message: "#^Method QUI\\\\ERP\\\\Output\\\\OutputTemplate\\:\\:getPDFDocument\\(\\) has invalid return type QUI\\\\HtmlToPdf\\\\Document\\.$#"
+			count: 2
+			path: src/QUI/ERP/Output/OutputTemplate.php
+
+		-
+			message: "#^Call to method getAttribute\\(\\) on an unknown class QUI\\\\ERP\\\\Accounting\\\\Invoice\\\\Invoice\\.$#"
+			count: 1
+			path: src/QUI/ERP/Process.php
+
+		-
+			message: "#^Call to method getAttribute\\(\\) on an unknown class QUI\\\\ERP\\\\Accounting\\\\Invoice\\\\InvoiceTemporary\\.$#"
+			count: 1
+			path: src/QUI/ERP/Process.php
+
+		-
+			message: "#^Call to method getAttribute\\(\\) on an unknown class QUI\\\\ERP\\\\Accounting\\\\Offers\\\\Offer\\.$#"
+			count: 1
+			path: src/QUI/ERP/Process.php
+
+		-
+			message: "#^Call to method getHash\\(\\) on an unknown class QUI\\\\ERP\\\\Accounting\\\\Offers\\\\Offer\\.$#"
+			count: 3
+			path: src/QUI/ERP/Process.php
+
+		-
+			message: "#^Call to method getHistory\\(\\) on an unknown class QUI\\\\ERP\\\\Accounting\\\\Invoice\\\\Invoice\\.$#"
+			count: 1
+			path: src/QUI/ERP/Process.php
+
+		-
+			message: "#^Call to method getHistory\\(\\) on an unknown class QUI\\\\ERP\\\\Accounting\\\\Invoice\\\\InvoiceTemporary\\.$#"
+			count: 1
+			path: src/QUI/ERP/Process.php
+
+		-
+			message: "#^Call to method getHistory\\(\\) on an unknown class QUI\\\\ERP\\\\Accounting\\\\Offers\\\\Offer\\.$#"
+			count: 1
+			path: src/QUI/ERP/Process.php
+
+		-
+			message: "#^Call to method getPrefixedNumber\\(\\) on an unknown class QUI\\\\ERP\\\\Accounting\\\\Invoice\\\\Invoice\\.$#"
+			count: 1
+			path: src/QUI/ERP/Process.php
+
+		-
+			message: "#^Call to method getPrefixedNumber\\(\\) on an unknown class QUI\\\\ERP\\\\Accounting\\\\Invoice\\\\InvoiceTemporary\\.$#"
+			count: 1
+			path: src/QUI/ERP/Process.php
+
+		-
+			message: "#^Call to method getUUID\\(\\) on an unknown class QUI\\\\ERP\\\\Accounting\\\\Invoice\\\\Invoice\\.$#"
+			count: 2
+			path: src/QUI/ERP/Process.php
+
+		-
+			message: "#^Call to method getUUID\\(\\) on an unknown class QUI\\\\ERP\\\\Accounting\\\\Invoice\\\\InvoiceTemporary\\.$#"
+			count: 2
+			path: src/QUI/ERP/Process.php
+
+		-
+			message: "#^Call to static method getInstance\\(\\) on an unknown class QUI\\\\ERP\\\\Accounting\\\\Invoice\\\\Handler\\.$#"
+			count: 1
+			path: src/QUI/ERP/Process.php
+
+		-
+			message: "#^Call to static method getInstance\\(\\) on an unknown class QUI\\\\ERP\\\\Accounting\\\\Offers\\\\Handler\\.$#"
+			count: 3
+			path: src/QUI/ERP/Process.php
+
+		-
+			message: "#^Call to static method getSalesOrder\\(\\) on an unknown class QUI\\\\ERP\\\\SalesOrders\\\\Handler\\.$#"
+			count: 2
+			path: src/QUI/ERP/Process.php
+
+		-
+			message: "#^Call to static method getTableSalesOrders\\(\\) on an unknown class QUI\\\\ERP\\\\SalesOrders\\\\Handler\\.$#"
+			count: 1
+			path: src/QUI/ERP/Process.php
+
+		-
+			message: "#^Class QUI\\\\ERP\\\\Accounting\\\\Invoice\\\\Invoice not found\\.$#"
+			count: 1
+			path: src/QUI/ERP/Process.php
+
+		-
+			message: "#^Class QUI\\\\ERP\\\\Accounting\\\\Invoice\\\\InvoiceTemporary not found\\.$#"
+			count: 1
+			path: src/QUI/ERP/Process.php
+
+		-
+			message: "#^Method QUI\\\\ERP\\\\Process\\:\\:getInvoices\\(\\) has invalid return type QUI\\\\ERP\\\\Accounting\\\\Invoice\\\\Invoice\\.$#"
+			count: 1
+			path: src/QUI/ERP/Process.php
+
+		-
+			message: "#^Method QUI\\\\ERP\\\\Process\\:\\:getInvoices\\(\\) has invalid return type QUI\\\\ERP\\\\Accounting\\\\Invoice\\\\InvoiceTemporary\\.$#"
+			count: 1
+			path: src/QUI/ERP/Process.php
+
+		-
+			message: "#^Method QUI\\\\ERP\\\\Process\\:\\:getOffers\\(\\) has invalid return type QUI\\\\ERP\\\\Accounting\\\\Offers\\\\Offer\\.$#"
+			count: 1
+			path: src/QUI/ERP/Process.php
+
+		-
+			message: "#^Call to static method getInstance\\(\\) on an unknown class QUI\\\\ERP\\\\Accounting\\\\Contracts\\\\Handler\\.$#"
+			count: 1
+			path: src/QUI/ERP/Processes.php
+
+		-
+			message: "#^Call to static method getInstance\\(\\) on an unknown class QUI\\\\ERP\\\\Accounting\\\\Invoice\\\\Handler\\.$#"
+			count: 2
+			path: src/QUI/ERP/Processes.php
+
+		-
+			message: "#^Call to static method getInstance\\(\\) on an unknown class QUI\\\\ERP\\\\Accounting\\\\Offers\\\\Handler\\.$#"
+			count: 2
+			path: src/QUI/ERP/Processes.php
+
+		-
+			message: "#^Call to static method getPurchasingProcess\\(\\) on an unknown class QUI\\\\ERP\\\\Purchasing\\\\Processes\\\\Handler\\.$#"
+			count: 1
+			path: src/QUI/ERP/Processes.php
+
+		-
+			message: "#^Call to static method getPurchasingProcessDraft\\(\\) on an unknown class QUI\\\\ERP\\\\Purchasing\\\\Processes\\\\Handler\\.$#"
+			count: 1
+			path: src/QUI/ERP/Processes.php
+
+		-
+			message: "#^Call to static method getSalesOrderByHash\\(\\) on an unknown class QUI\\\\ERP\\\\SalesOrders\\\\Handler\\.$#"
+			count: 1
+			path: src/QUI/ERP/Processes.php
+
+		-
+			message: "#^Call to static method getTableSalesOrders\\(\\) on an unknown class QUI\\\\ERP\\\\SalesOrders\\\\Handler\\.$#"
+			count: 1
+			path: src/QUI/ERP/Processes.php
+
+		-
+			message: "#^Dead catch \\- Exception is never thrown in the try block\\.$#"
+			count: 2
+			path: src/QUI/ERP/Processes.php
+
+		-
+			message: "#^Call to static method getInvoiceByString\\(\\) on an unknown class QUI\\\\ERP\\\\Accounting\\\\Invoice\\\\Utils\\\\Invoice\\.$#"
+			count: 1
+			path: src/QUI/ERP/Utils/Process.php

tools/phpstan

-/Users/jan/.phive/phars/phpstan-1.11.1.phar
\ No newline at end of file
+/Users/jan/.phive/phars/phpstan-1.11.8.phar
\ No newline at end of file