Improve flow of working with Assistant generated text

[jancborchardt]

Is your feature request related to a problem? Please describe.
Right now if you e.g. want to summarize a piece of text, you need to:

1. Select the text
2. Click on the Assistant icon in the toolbar
3. Click on "Summarize"
4. Be overwhelmed by the full Assistant dialog opening
5. Know you have to click "Summarize" again
6. Wait for it to generate
7. Copy it out manually
8. Paste it in manually

Describe the solution you'd like
This flow we could simplify to:

1. Select the text
2. Click on the Assistant icon in the toolbar
3. Click on "Summarize"
4. See a placeholder (e.g. in an infobox-like element with heading "Summary generated by Nextcloud Assistant") get inserted below the text you are summarizing which shows a progress indicator and automatically pastes the summary.

That flow is vastly simpler and less daunting, while also still clearly communicating that it’s AI-generated.

Additional context
This could be done for the actions like:

• Generate headline (insert above)
• Summarize (insert below?)
• Reformulate text (insert below?)
• Translate (insert below?)

One possible drawback is that you can not easily re-generate a result or have error handling. But as a follow-up we could also add a "re-generate" button.

[juliusknorr]

From personal use cases I find a free prompt most useful. I found the approach of Notion and https://platejs.org/ quite interesting to have a shortcut or just type space in an empty paragraph to trigger AI in an inline overlay.

Blocknote also uses this inline approach https://www.blocknotejs.org/docs/features/ai

[jancborchardt]

@juliusknorr sounds good too – I would say we should have that in addition, not instead? And the proposal for how the result could be shown still holds there as well #8783