Privileges: GAIA_VIEW

This takes in a prompt and performs necessary retrieval and summarization.
It streams SSE events where an event can be of multiple types:

• data: response for the query
• follow_up: questions / clarifications for user input
• progress: progress events that gives Gaia's analysis and reasoning to the question
• error: Error in the system.

The stream ends after a terminal 'data' or 'error' event