fix(agent): restore public send method

packages/context/time-context/tests/time-context.spec.ts

@@ -43,6 +43,7 @@ function sessionAgent(session: Session, id = 'agent'): Agent {
     inbox: new Inbox(session),
     status: 'running',
     ctx: new Context(),
+    send: () => {},
     followup: () => {},
     steer: () => {},
     inject: () => { throw new Error('time-context must append directly to the open step') },

packages/context/tmux-context/tests/tmux-context.spec.ts

@@ -99,6 +99,7 @@ function sessionAgent(session: Session, id = 'agent'): Agent {
     inbox: new Inbox(session),
     status: 'running',
     ctx: new Context(),
+    send: () => {},
     followup: () => {},
     steer: () => {},
     inject: () => { throw new Error('tmux-context must append directly to the open step') },

packages/context/workspace-context/tests/workspace-context.spec.ts

@@ -178,6 +178,7 @@ function stubAgent(cwd?: string, seed: SessionEvent[] = []): Agent {
     session,
     inbox: new Inbox(session),
     status: 'idle',
+    send: () => {},
     followup: () => {},
     steer: () => {},
     inject: () => { throw new Error('workspace-context must append directly to the open step') },