diff --git a/src/daemon/ticker.py b/src/daemon/ticker.py
index 8b78257..f71056a 100644
--- a/src/daemon/ticker.py
+++ b/src/daemon/ticker.py
@@ -553,6 +553,22 @@ class Ticker:
                 )
                 spawned.append(agent_id)
                 logger.info("Broadcast spawned %s (session=%s)", agent_id, session_id)
+                # 写广播路由审计记录
+                try:
+                    conn = get_connection(db_path)
+                    try:
+                        conn.execute(
+                            "INSERT INTO routing_decisions "
+                            "(task_id, mode, selected_agent, reason, outcome, created_at) "
+                            "VALUES (?,?,?,?,?,datetime('now'))",
+                            (t.id, "broadcast", agent_id,
+                             f"Broadcast claim prompt sent", "dispatched"),
+                        )
+                        conn.commit()
+                    finally:
+                        conn.close()
+                except Exception:
+                    pass  # 审计记录失败不影响广播
             except Exception:
                 self.counter.release(agent_id)
                 logger.exception("Broadcast spawn failed for %s", agent_id)