Conversation Goals

Add a resumable goal strategy to a normal agent-server conversation.

A goal is an optional strategy on a normal remote conversation. It does not create a special conversation type, a fork, or a separate history. The agent-server keeps using the same conversation events and adds a background driver that audits progress toward the objective.

Use this for UI flows such as a /goal command: the user sets an objective, the agent keeps working toward it, and the UI can show progress with stop/resume controls.

Behavior

When a client starts a goal, the agent-server:

1. Finds the live conversation EventService.
2. Rejects the request if the conversation or another goal is already running.
3. Creates a GoalController from the objective and max_iterations.
4. Starts a background task and returns immediately.
5. Emits ConversationStateUpdateEvent with key="goal" and status="running".
6. Sends the objective as a normal user message into the same conversation history.
7. Runs the agent, judges the resulting events, and either emits complete / capped or sends a follow-up prompt and loops.

A normal user message interrupts the active goal before that new user input is appended. This lets the user take control without losing the goal state.

Endpoints

All endpoints are under the agent-server API prefix.

Endpoint	Purpose
POST /api/conversations/{conversation_id}/goal	Set a goal and start the background driver.
POST /api/conversations/{conversation_id}/goal/stop	Stop the active goal and record it as resumable.
POST /api/conversations/{conversation_id}/goal/resume	Resume the most recent interrupted goal.

Start requests include the objective and an optional iteration cap:

{
  "objective": "Refactor the authentication flow and verify tests pass",
  "max_iterations": 10
}

max_iterations defaults to 10 and must be at least 1.

Status Events

Clients should render goal progress from streamed ConversationStateUpdateEvent events where key == "goal". The value includes:

Field	Meaning
active	Whether the goal driver is still active.
status	running, complete, capped, or interrupted.
iteration	Current audit round.
max_iterations	Iteration cap for this goal.
objective	Original objective.
verdict	Optional judge feedback for the latest round.

These status events are persisted with the conversation events, so resume can work after a server restart.

Stop and Resume

POST /goal/stop cancels the background goal driver if one is running. The cancel path records a status="interrupted" goal event, so the UI can stop showing the goal as active and the goal can be resumed later. It does not delete conversation history.

POST /goal/resume reads the last persisted goal status. It only resumes statuses that are not terminal; a goal with status="complete" or status="capped" is not resumable. Resume rebuilds the controller with the same objective and stored iteration, then continues with a resume prompt.

Stopping is graceful. If a model call is already in flight, it may finish before the conversation becomes idle.

Error Handling

Case	Result
Conversation not found	404
Conversation already running	409
Another goal already running	409
No resumable goal	400
Invalid objective or iteration cap	400 / validation error

There is no dedicated GET /goal endpoint. To restore UI state on load, read the conversation events and use the latest ConversationStateUpdateEvent with key="goal".