- banner:
  - navigation "Session hierarchy":
    - button "Reply with a one-sentence description" [disabled]
    - text: · 1 turns
  - tablist:
    - tab "Chat" [selected]
    - tab "Trajectory"
    - tab "Waterfall"
- text: Reply with a one-sentence description of event sourcing, then stop.
- textbox "Message the agent"
- button "Add attachment":
  - img
- combobox "Access mode":
  - option "Read-only" [selected]
  - option "Read-write"
- button "Send message" [disabled]