Support the ability to to save and review "sessions" in AGS

[victordibia]

As users experiment, it is frequently useful to do the following

• Autosave sessions. api should be refactored such that all runs and messages can be retrieved
• update/refactor UI to show/display all runs and messages
• Explicitly "share" a session (either via a download or link)
• Include snapshot of session with full team config full observability (what configuration led to that specific outcome)

Notes: All messages have a run_id, All runs have a session_id

How

• Load session
  • Load all runs
  • Show messages (.. refactor ChatView and MessageList component such that it can take a list of runs and messages )
• Add to Gallery
• Creates gallery entry with sessionid and
• UI Gallery view visualizes session but with input disabled.