feat: 提示词新增全局变量 DataDir + 触发合并/种子意图默认值调整

- prompt: 新增全局运行时变量 {{.DataDir}}(服务端数据根目录 s.m.dir),
  与 {{.Now}} 一样对所有 agent(planner/worker/mainagent/goals/chat 及自定义)可用;
  各 Vars 结构体加 DataDir 字段并在渲染时填入根 workDir,globalPromptVars 登记以便
  校验/UI 变量列表/预览识别(纯运行时变量,不入库,无需迁移)。
- trigger_merge_mode 默认 by_task→all(schema/config/后端兜底/前端初值同步)。
- seed_first_intent 默认 true→false(走标准先规划再执行);spawn_task 不再暴露该参数,
  工具建任务一律 false。

web/src/app/(main)/function/tasks/page.tsx

@@ -112,7 +112,7 @@ export default function TasksPage() {
   const [llmProfile, setLlmProfile] = React.useState<string>(ACTIVE_PROFILE); // sentinel = active
   const [timeoutMin, setTimeoutMin] = React.useState(""); // 任务级超时(分钟);空/0 = 不限时
   const [heartbeatMin, setHeartbeatMin] = React.useState("10"); // planner 心跳(分钟);默认10,下限10(与后端一致)
-  const [seedFirstIntent, setSeedFirstIntent] = React.useState(true); // 创建时下发种子意图,worker 免等首轮 planner 直接开跑
+  const [seedFirstIntent, setSeedFirstIntent] = React.useState(false); // 创建时下发种子意图,worker 免等首轮 planner 直接开跑;默认关闭,走标准先规划再执行
   const [open, setOpen] = React.useState(false);
   const [query, setQuery] = React.useState("");
   const [statusFilter, setStatusFilter] = React.useState<TaskStatus | "all">("all");
@@ -182,7 +182,7 @@ export default function TasksPage() {
       setLlmProfile(ACTIVE_PROFILE);
       setTimeoutMin("");
       setHeartbeatMin("10");
-      setSeedFirstIntent(true);
+      setSeedFirstIntent(false);
       setOpen(false);
       load();
     } catch (e) {

web/src/components/agent-editor.tsx

@@ -734,11 +734,11 @@ function AgentTriggersTab({ agentKey, agent }: { agentKey: string; agent?: Agent
   const [tools, setTools] = React.useState<Tool[]>([]);
   // 触发后处理策略(每 agent);初值来自 agent detail,改动即保存。
   const [runMode, setRunMode] = React.useState<"serial" | "parallel">(agent?.trigger_run_mode ?? "serial");
-  const [mergeMode, setMergeMode] = React.useState<"by_task" | "all" | "none">(agent?.trigger_merge_mode ?? "by_task");
+  const [mergeMode, setMergeMode] = React.useState<"by_task" | "all" | "none">(agent?.trigger_merge_mode ?? "all");
   const [maxParallel, setMaxParallel] = React.useState(String(agent?.trigger_max_parallel ?? 5));
   React.useEffect(() => {
     setRunMode(agent?.trigger_run_mode ?? "serial");
-    setMergeMode(agent?.trigger_merge_mode ?? "by_task");
+    setMergeMode(agent?.trigger_merge_mode ?? "all");
     setMaxParallel(String(agent?.trigger_max_parallel ?? 5));
   }, [agent?.trigger_run_mode, agent?.trigger_merge_mode, agent?.trigger_max_parallel]);
 

web/src/lib/api.ts

@@ -115,7 +115,7 @@ export const api = {
       goal,
       llm_profile_id: llmProfileId ?? null,
       timeout_seconds: timeoutSeconds ?? 0,
-      seed_first_intent: seedFirstIntent ?? true,
+      seed_first_intent: seedFirstIntent ?? false,
       plan_heartbeat_seconds: planHeartbeatSeconds ?? 0, // 0 = 后端归一到默认 600(10min)
     }),
   deleteTask: (id: string) => del<{ deleted: number }>(`/tasks/${id}`),