refactor(asset): delete_assets_by_host 改为平台工具(默认绑 Auto)

之前作为任务域工具挂在 worker/mainagent 列表里;移除绑定后它也从 BuiltinToolSeeds
自动生成的 seed 清单里消失,导致从未写入 tools 表、UI 看不到。改到平台工具层
(platformTools),由 seedOrchestrationTools 每次启动独立 seed 并默认绑内置 Auto agent,
不属于任务 agent。db 层 DeleteByHost 不变。

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

agent/tools_insert.go

@@ -521,45 +521,6 @@ func (t *ToolSet) listAssets() actool.CoreTool {
 	)
 }
 
-// deleteAssetsByHost hard-deletes every asset tied to one host (exact match).
-func (t *ToolSet) deleteAssetsByHost() actool.CoreTool {
-	return writeTool(
-		"delete_assets_by_host",
-		"按 host 精确删除资产：删掉该 host 的域名/子域名，以及其下的服务(service)、接口(endpoint)。\n"+
-			"host 完全匹配(小写、去空格),不是模糊/通配。\n"+
-			"传根域名(如 example.com)会连带删除它的子域名及其服务/接口;传子域名(如 a.example.com)或 IP 只删该 host 自身及其服务/接口。\n"+
-			"⚠️ 硬删除且作用于全局资产库(跨任务共享),不可撤销;请先用 list_assets 确认范围再删。",
-		obj(map[string]any{
-			"host": str("要删除的 host:域名/子域名/IP。完全匹配,如 example.com 或 a.example.com 或 1.2.3.4"),
-		}, "host"),
-		func(_ context.Context, in json.RawMessage) (actool.Result, error) {
-			if t.as == nil {
-				return actool.Errorf("delete_assets_by_host 未启用: AssetStore 未初始化"), nil
-			}
-			var a struct {
-				Host string `json:"host"`
-			}
-			_ = json.Unmarshal(in, &a)
-			if strings.TrimSpace(a.Host) == "" {
-				return actool.Errorf("host 不能为空"), nil
-			}
-			counts, err := t.as.DeleteByHost(a.Host)
-			if err != nil {
-				return actool.Errorf("删除失败: " + err.Error()), nil
-			}
-			var total int64
-			for _, n := range counts {
-				total += n
-			}
-			return jsonResult(map[string]any{
-				"host":            a.Host,
-				"deleted":         total,
-				"deleted_by_type": counts,
-			})
-		},
-	)
-}
-
 // listCompanies lets an agent enumerate companies (企业) with their scope + asset count.
 func (t *ToolSet) listCompanies() actool.CoreTool {
 	return readTool(