Add conversation pkg

internal/job/job.go

@@ -352,7 +352,7 @@ func (j *Job) createConversation(
 			return nil, fmt.Errorf("marshal initial message: %w", err)
 		}
 		if _, err := q.InsertMessage(ctx, db.InsertMessageParams{
-			Content:        string(content),
+			Content:        content,
 			ConversationId: c.Id,
 			Role:           db.MessageRole(message.Role),
 			Sequence:       sequence,
@@ -411,7 +411,7 @@ func (j *Job) insertMessage(
 		return nil, fmt.Errorf("get next message sequence: %w", err)
 	}
 	m, err := q.InsertMessage(ctx, db.InsertMessageParams{
-		Content:        string(content),
+		Content:        content,
 		ConversationId: cid,
 		Metadata:       metadataJSON,
 		Role:           db.MessageRole(message.Role),

internal/job/job_test.go

@@ -685,7 +685,7 @@ func TestCallTool(t *testing.T) {
 				t.Errorf("tool metadata = %v, want nil", last.Metadata)
 			}
 			if last.Role != db.MessageRoleTool ||
-				last.Content != string(want) {
+				string(last.Content) != string(want) {
 				t.Errorf(
 					"last stored message = role %q, %s; "+
 						"want %q, %s",