Function handleToolStart

ui/src/stores/tools.ts:60–67

(call: ToolCallSnapshot)

   * 处理工具开始事件
   */
  const handleToolStart = (call: ToolCallSnapshot) => {
    toolRuns.value.set(call.id, {
      ...call,
      state: "executing",
      started_at: call.started_at || new Date().toISOString(),
      updated_at: new Date().toISOString(),
    });
  };

  /**
   * 处理工具进度事件