Update: 2025 18.6.0.274

[Karlis]

This is a feature update as well as a maintenance release:

* Added: Edit message feature in AI chat with conversation branching and file re-attachment
* Added: Claude Opus Thinking engine
* Added: Conversation compression with summary of discussed content
* Added: AI tools enabled by default for new users
* Added: Safe overwrite support for SFTP uploads
* Added: Updated CSS cursor autocomplete list with missing modern values
* Added: Right-click Copy / Select All menu in AI Preview dialog

* Fixed: AI chat stealing focus from dialogs such as Go To and Search
* Fixed: JavaScript errors appearing in AI chat from code examples
* Fixed: Copy not working in AI Preview dialog
* Fixed: Keyboard shortcuts not working in modal dialogs
* Fixed: File changed dialog appearing even when file content is identical
* Fixed: User/group display for SFTP v3 servers in FTP Explorer details view

[Steve(spt)]

thank you.