Slash / menu of WYSIWYG Editor

[linonetwo]

#8991 We should allow register AI commands, And not hard code any AI provider.

Allow use $:/tags/editor/command to register additional new command, which is an action tiddler.
By default, user input after slash is used as search filter for its caption and title, And the command is triggered when user hits enter.

If the tidder has an inputVariable list field, Editor will allow user enter input One by one use as variable for action to use.
So user can slash and enter “summarize website”, Search for this command. And paste the website URL, The action tidder will fetch the website and AI summarize and paste into the editor.
Or user search for website builder command, And enter what he wants as input. AI Will use wiki text to build a form or Visualization for him, just inside the editor.

Apart from these, I think there are the same as Notion's editor, just show all snippets as usable blocks to insert.

inputVariable Will also works for command plate.