feat(task): 创建任务可选下发种子意图,worker 免等首轮规划直接开跑

新增 seed_first_intent(默认开启):创建即把"描述+目标"作为一条意图
写入 frontier,worker 轮询领取立即执行,省掉开跑前的首轮 planner LLM;
跑完由 NotifyDone 正常唤醒 planner 判定/补充。CTF 场景常一 work 解决。

- Engine.Run 首轮 kick 改为"frontier 为空才触发",一处覆盖普通/种子/恢复三种情况
- HTTP createTask 与 spawn_task 工具同步支持;bump 工具 schema 刷新 flag 使旧库生效

Co-Authored-By: Claude Opus 4.8 <[email protected]>

web/src/lib/api.ts

@@ -109,8 +109,14 @@ export const api = {
 
   // ---- tasks ----
   tasks: () => get<{ tasks: Task[]; active: string }>("/tasks").then((r) => ({ tasks: arr(r.tasks), active: r.active ?? "" })),
-  createTask: (description: string, goal: string, llmProfileId?: number, timeoutSeconds?: number) =>
-    post<Task>("/tasks", { description, goal, llm_profile_id: llmProfileId ?? null, timeout_seconds: timeoutSeconds ?? 0 }),
+  createTask: (description: string, goal: string, llmProfileId?: number, timeoutSeconds?: number, seedFirstIntent?: boolean) =>
+    post<Task>("/tasks", {
+      description,
+      goal,
+      llm_profile_id: llmProfileId ?? null,
+      timeout_seconds: timeoutSeconds ?? 0,
+      seed_first_intent: seedFirstIntent ?? true,
+    }),
   deleteTask: (id: string) => del<{ deleted: number }>(`/tasks/${id}`),
   controlTask: (id: string, action: "pause" | "resume") => post<{ id: string; paused: boolean }>(`/tasks/${id}/control`, { action }),
   setActive: (id: string) => post<{ active: string }>("/active", { id }),