Feature Request: Add File Upload and Context ID Support to Local Agent Preview

[Kiranftw]

Add file upload capability to the Local Agent Preview so developers can test agent workflows that depend on uploaded documents before connecting the agent to external AI clients such as SAP Joule.

The Local Agent Preview should support uploading one or more files and provide the agent/backend with the same contextual identifiers that are available when the agent is invoked by an external AI client. In particular, the preview should maintain and propagate the following identifiers throughout the agent interaction:

conversation-id
task-id
context-id ---- example ids

These IDs should remain consistent for the lifetime of the corresponding conversation/task/context and should be accessible to the agent, tools, and backend services.

[github-actions]

👋 Hello @Kiranftw, thank you for submitting this issue. Our team is reviewing your report and will follow up with you as soon as possible.

[Akatuoro]

Hi @Kiranftw, thanks for the feature request. It makes sense that the preview could handle file upload / download if the agent advertises support for the respective input modes via A2A. The second paragraph onwards does not make sense in this context. Files are related to their specific task id (and by extension context id), this has nothing to do with their propagation in the UI.
Will look into it, but you can of course already test it via API or in your own UI.