Propose relevant information during Talk calls from notes/files

[!TIP]

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Feature request

Which Nextcloud Version are you currently using: 33
Is your feature request related to a problem? Please describe.
When having calls, finding the right information can be challenging. Also it might be useful to get reminded of things discussed previously and written down in protocols.

Describe the solution you'd like
With activated transcription of calls, context searches could be performed in the background for certain events, e.g. if the AI recognizes questions or points where it comes to decisions. Then, relevant information could be proposed in the UI.

Describe alternatives you've considered
Performing the searches manually or upfront.

Additional context
There is a Mac tool doing something similar: https://github.com/yazinsai/OpenOats

Might belong more to the Assistant, I'm happy to move that where ever it makes sense.

The issue names no files or tests. Start by reviewing the existing Talk transcription and Assistant-related entry points, then clarify which events, information sources, and UI should be supported. Done requires an agreed implementation scope and acceptance criteria.