[WIP] Streaming responses

[julien-nc]

Depends on:

• Let guzzle choose the handler for http requests server#60167
• [WIP] Add task processing streaming support server#60500
• [WIP] Add streaming support integration_openai#366

This adds the ability to get and display intermediate (streamed) text responses in the chat UI and in the generic form.
We use @nextcloud/notify_push if the notify push service is configured and available. If not, we still get intermediate results with the (pre-existing) task status polling.

Notify push

Kooha-2026-05-18-13-27-53.webm

Kooha-2026-05-18-13-31-56.webm

Polling (fallback)

Kooha-2026-05-18-13-40-25.webm

Kooha-2026-05-18-13-39-28.webm

[DaphneMuller]

That is looking great and will definitely improve the experience of performance for users!
Small nitpick and not critical, but it could be nice to indicate that the answer is still loading for the polling - work with text example.

[julien-nc]

There is an indicator already, there is a loading icon next to the task type name at the top of the form (below the task type list):

I agree this is not enough. Nothing is definitive in this "WIP" PR.

How would you improve this?

I was thinking of imitating what's done in some other tools: Make the text field border pulse. Right now it is a thick, static, primary color border. It could pulse from border-color to primary color.

[DaphneMuller]

I don't really know what the best solution is, maybe @marcoambrosini can help with that. Keep in mind that things are good regarding people who don't use animations for motion sickness. Pulsing the border color could be an idea