refactor: add execution backend selection

src/lib/boss-data.ts

@@ -5560,6 +5560,39 @@ export async function getMasterAgentTask(taskId: string) {
   return state.masterAgentTasks.find((item) => item.taskId === taskId) ?? null;
 }
 
+export async function reassignMasterAgentTaskExecution(payload: {
+  taskId: string;
+  deviceId: string;
+  accountId?: string;
+  accountLabel?: string;
+  executionPrompt?: string;
+}) {
+  const task = await mutateState((state) => {
+    const next = state.masterAgentTasks.find((item) => item.taskId === payload.taskId);
+    if (!next) {
+      throw new Error("MASTER_AGENT_TASK_NOT_FOUND");
+    }
+    if (next.status !== "queued") {
+      return { ...next };
+    }
+    next.deviceId = payload.deviceId;
+    next.accountId = payload.accountId;
+    next.accountLabel = payload.accountLabel;
+    if (payload.executionPrompt?.trim()) {
+      next.executionPrompt = payload.executionPrompt.trim();
+    }
+    return { ...next };
+  });
+
+  publishBossEvent("master_agent.task.updated", {
+    taskId: task.taskId,
+    deviceId: task.deviceId,
+    status: task.status,
+  });
+
+  return task;
+}
+
 export async function claimNextMasterAgentTask(deviceId: string) {
   let attachmentProjectId: string | undefined;
   let dispatchExecutionProjectId: string | undefined;