Is your feature request related to a problem? Please describe.
At present, I can either have an AI summary automatically generated for every single article in a feed, or make do without any AI summaries for that feed at all. For feeds that contain a mixture of long and short articles, i.e. some that would benefit from a summary and some that would not, this is an inefficient use of time and tokens.

Describe the solution you'd like
An option within the article view of the app to generate an AI summary "on demand". Alternatively, an option to automatically generate an AI summary whenever the estimated reading time for an article is larger than some user-defined value.

Describe alternatives you've considered
Disabling FeedMe AI summaries and instead sharing individual articles to an AI app is one workaround. It is less efficient as it requires you to type a prompt for every summary that you want generated and forces you to leave the app (which contains the full article) as well.

Additional context
Add any other context or screenshots about the feature request here.