Add isCli removal chapter

[laoneo]

User description

for joomla/joomla-cms#44611

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PR Type

Documentation

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Description

• Added documentation explaining the removal of the deprecated isCli function from application classes
• Included migration guide with code examples showing how to replace $app->isCli() checks with $app instanceof ConsoleApplication
• Referenced the original PR (#44611) where the change was implemented

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Changes walkthrough 📝

	Relevant files
Documentation	removed-backward-incompatibility.md Documentation for isCli function removal and migration guide migrations/54-60/removed-backward-incompatibility.md Added documentation for the removal of isCli function from application classes Provided code examples showing how to migrate from old isCli() usage to checking for ConsoleApplication instance +17/-0

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[qodo-merge-pro]

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PR Reviewer Guide 🔍

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⏱️ Estimated effort to review: 1 🔵⚪⚪⚪⚪

🧪 No relevant tests

🔒 No security concerns identified

⚡ Recommended focus areas for review Documentation Clarity The migration guide should mention potential impact on extensions and recommend testing CLI-dependent functionality after migration

[qodo-merge-pro]

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PR Code Suggestions ✨

Explore these optional code suggestions:

Category	Suggestion	Score
General	Improve code readability and maintainability by properly importing classes instead of using fully qualified names inline Add a note about using instanceof with the fully qualified class name to prevent potential namespace issues and ensure the code works even if the class is not imported. migrations/54-60/removed-backward-incompatibility.md [80] -if ($app instanceof \Joomla\CMS\Application\ConsoleApplication) { +use Joomla\CMS\Application\ConsoleApplication; +if ($app instanceof ConsoleApplication) { + Apply this suggestion Suggestion importance[1-10]: 2 Why: While using imports can improve readability, in a migration guide it's often clearer to show the fully qualified class name directly in the example to avoid any ambiguity. The suggestion would make the example less self-contained.	2

[Bodge-IT]

@laoneo, this pr has conflicts, can we clear them?

[laoneo]

done