fix: update references from "Beike AI" to "AgentDesk" in README and initialization files

cmd/testdata/tag/init.go

@@ -17,11 +17,11 @@ func Init() error {
 		sortNo   int
 	}{
 		{1, 0, "售前", 1},
-		{2, 1, "贝壳AI", 1},
+		{2, 1, "AgentDesk", 1},
 		{3, 2, "产品咨询", 1},
 		{4, 2, "购买意向", 1},
 		{5, 0, "售后", 2},
-		{6, 5, "贝壳AI", 1},
+		{6, 5, "AgentDesk", 1},
 		{7, 6, "问题反馈", 1},
 		{8, 6, "产品部署", 2},
 		{9, 6, "需求工单", 3},