refactor(agent): align delivery method names

packages/goal/goal-session/src/index.ts

@@ -219,7 +219,7 @@ export function apply(ctx: Context): void {
     }
     state.attempt = reservation
     try {
-      agent.send(content, {
+      agent.followup(content, {
         source: { kind: 'goal', goalId: goal.id, revision: goal.revision, round },
       })
     } catch (error: unknown) {

packages/goal/goal-session/src/prompt.ts

@@ -7,7 +7,7 @@ import type { GoalView } from '@deepseek-ai/dsh-goal'
  * Render the complete goal-round instruction retained in session history.
  * @param goal - exact active goal revision being admitted.
  * @param round - next positive round number.
- * @returns a fresh one-block prompt for `Agent.send()`.
+ * @returns a fresh one-block prompt for `Agent.followup()`.
  */
 export function renderGoalRoundPrompt(goal: GoalView, round: number): ContentBlock[] {
   return [{