refactor(agent): align delivery method names

packages/goal/tool-goal/README.md

@@ -18,7 +18,7 @@ An autonomous goal round that successfully reports `complete` or `blocked` contr
 
 Execution requires the exact live `exec.agent`, its inherited `AgentRegistry` initiator, running status, and an open turn. Create, edit, pause, and resume additionally require an accepted `{ kind: 'user' }` message or steering event in a runtime-root agent's current turn. Durable fork lineage does not demote a resumed root; live subagent ownership does.
 
-`{ kind: 'user' }` is a host attestation. `Agent.send()` and `steer()` assign it when their caller omits a source, so plugins, schedulers, and other non-human producers must pass their own source rather than inheriting human authority.
+`{ kind: 'user' }` is a host attestation. `Agent.followup()` and `steer()` assign it when their caller omits a source, so plugins, schedulers, and other non-human producers must pass their own source rather than inheriting human authority.
 
 Complete and blocked also accept the exact current goal round: a goal-sourced `user/message` whose id, revision, and round equal the folded current goal. A goal-round blocked call is mechanically rejected until `blockedAfterConsecutiveRounds`; the model judges whether the same condition actually persisted and must describe it in `blocked_reason`. Direct human authority may stop a goal immediately.
 

packages/goal/tool-goal/src/authority.ts

@@ -64,7 +64,7 @@ export function goalToolExecution(ctx: Context, exec: ToolRunContext): GoalToolE
 
 /**
  * Whether host-attested human input appears in the current root-agent turn.
- * An omitted `Agent.send()` / `steer()` source resolves to `user`, so non-human
+ * An omitted `Agent.followup()` / `steer()` source resolves to `user`, so non-human
  * producers must supply their own source rather than inheriting this authority.
  */
 function hasDirectHumanInput(ctx: Context, execution: GoalToolExecution): boolean {

packages/goal/tool-goal/tests/tool-goal.spec.ts

@@ -31,7 +31,7 @@ function stubAgent(rawId: string, supplied?: Session): StubAgent {
     session,
     get status() { return status },
     ctx: new Context(),
-    send: () => AgentMessageId('stub'),
+    followup: () => AgentMessageId('stub'),
     queue: () => AgentMessageId('stub'),
     steer: () => AgentMessageId('stub'),
     inject(content: ContentBlock[], options?: InjectOptions) {
@@ -43,7 +43,7 @@ function stubAgent(rawId: string, supplied?: Session): StubAgent {
       }, { surfaceOp: 'append' })
       return AgentMessageId('stub')
     },
-    acceptInput: () => AgentMessageId('stub'),
+    send: () => AgentMessageId('stub'),
     cancel() {},
     whenIdle() { return Promise.resolve() },
   }