Add outbound agent response boundary

app/main.py

@@ -128,6 +128,31 @@ async def test_message(session_id: str = Form(...), message: str = Form(...), us
     }
 
 
+@app.post("/admin/test-agent-response")
+async def test_agent_response(
+    session_id: str = Form(...),
+    message: str = Form(...),
+    mode: str = Form("admin"),
+) -> dict:
+    """Send a test agent response through the outbound boundary."""
+    if not orchestrator:
+        raise HTTPException(status_code=503, detail="Orchestrator not initialized")
+
+    delivery = await orchestrator.emit_agent_response(
+        session_id=session_id,
+        message=message,
+        mode=mode,
+    )
+    if not delivery.get("sent"):
+        raise HTTPException(status_code=404, detail=delivery.get("reason", "send_failed"))
+
+    return {
+        "status": "agent_response_emitted",
+        "delivery": delivery,
+        "timestamp": datetime.utcnow().isoformat(),
+    }
+
+
 @app.get("/admin/ledger")
 async def get_ledger(session_id: str) -> dict:
     """Get the markdown ledger for a session."""