Fix topology truncate false positives and reduce graph/discover load.

Batch ManagedNE lookups, correct project-neighbors truncation/frozen signals, page discover polls, and delete both nodes and edges when multi-selected.

Co-authored-by: Cursor <cursoragent@cursor.com>

web/src/i18n/en.ts

@@ -1413,9 +1413,13 @@ const en = {
     edgeDeleted: "Deleted {{count}} link(s)",
     discoverCancelled: "Discovery cancelled",
     truncatedMembership: "Membership cap reached; some neighbors were not placed. Use classify/slices or a new map.",
+    truncatedFrozen: "This map membership is frozen; neighbors cannot be projected. Unfreeze in classify/slices or create a new map.",
     truncatedNodes: "Too many view nodes; display truncated. Narrow membership or create another map.",
     truncatedEdges: "Too many edges; display truncated. Filter status or create another map.",
     truncatedGeneric: "Graph data truncated. Narrow scope or create another map.",
+    deleteSelectionConfirm:
+      "Remove {{nodes}} NE(s) from this map and delete {{edges}} Fabric link(s)?",
+    selectionDeleted: "Removed {{nodes}} NE(s) and deleted {{edges}} link(s)",
     newMap: "New",
     newMapName: "New topology",
     rename: "Rename",

web/src/i18n/zh.ts

@@ -1404,9 +1404,12 @@ const zh = {
     edgeDeleted: "已删除 {{count}} 条链路",
     discoverCancelled: "发现已取消",
     truncatedMembership: "视图已达成员上限，部分邻居未上图。可去分类/切片或新建视图。",
+    truncatedFrozen: "当前视图已冻结成员，无法投影邻居。请在分类/切片中解冻或新建视图。",
     truncatedNodes: "画布节点过多已截断显示。建议新建视图或收紧成员范围。",
     truncatedEdges: "画布链路过多已截断显示。建议筛选状态或新建视图。",
     truncatedGeneric: "图数据已截断显示。建议收紧范围或新建视图。",
+    deleteSelectionConfirm: "删除选中的 {{nodes}} 个网元（移出画布）和 {{edges}} 条链路（从 Fabric 删除）？",
+    selectionDeleted: "已移除 {{nodes}} 个网元、删除 {{edges}} 条链路",
     newMap: "新建",
     newMapName: "新拓扑图",
     rename: "重命名",