I suppose it depends on if the user want the mini app to be the primary use of the tiddlywiki or along with other “mini-apps”. I think there is value creating a mini-app to be contained wholly within a tiddler, tiddlers can be made full screen if necessary, even opened in a new window etc…
But making the min-app launch icon visible could use more than one position and provide settings to disable the ones the user does not want.
- Menu item which will only work if menu plugin installed
- Launch Button in a tiddler tagged $:/tags/AboveStory
- I Page Control button that appears in the sidebar (very Common)
- A sidebar tab list of installed applications eg; use $:/tags/applications then others can also add a list item for their aps as well, to create them for other installed apps
- If you place a button in $:/config/EmptyStoryMessage it will appear if all tiddlers are closed.
- You can put it in the default tiddlers so it opens on wiki-load.
There are possibly other places but the above is most likely enough.