Defer canvas edge deletes to Save and cascade orphan Fabric on NE detach.

Queue fabric edge deletes until Save with undo-safe pending state; hard-delete topology/LLDP placeholders from the canvas; purge fully orphaned fabric nodes after inventory detach, with a periodic reconcile GC.

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

web/src/i18n/en.ts

@@ -718,10 +718,12 @@ const en = {
     edit: "Edit",
     delete: "Delete",
     openTerminal: "Terminal",
-    confirmDelete: "Delete this network element?",
+    confirmDelete:
+      "Delete this network element? If its Fabric node is managed-only (no UME binding), that node and its direct links will also be removed.",
     batchDelete: "Batch delete",
     batchDeleting: "Deleting…",
-    batchDeleteConfirm: "Delete {{n}} selected network element(s)? This cannot be undone.",
+    batchDeleteConfirm:
+      "Delete {{n}} selected network element(s)? Cannot be undone. Managed-only Fabric nodes cascade (node + direct links); nodes still bound to UME keep topology.",
     batchDeleteDone: "Deleted {{n}} network element(s)",
     batchDeleteSelectRequired: "Select network elements to delete",
     keywordPh: "name / IP / user / tags",
@@ -784,7 +786,8 @@ const en = {
       syncing: "Syncing…",
       delete: "Delete UME NEs",
       deleting: "Deleting…",
-      deleteConfirm: "Delete all managed NEs created from UME sync? This cannot be undone.",
+      deleteConfirm:
+        "Delete all managed NEs created from UME sync? Cannot be undone. Fabric nodes that become fully orphaned (no UME left) are removed with their direct links.",
       done: "UME sync done: {{inserted}} inserted, {{updated}} updated, {{deleted}} deleted, {{total}} inventory total",
       deletedDone: "Deleted {{n}} UME-synced NEs",
     },
@@ -1409,8 +1412,8 @@ const en = {
     projectedNeighbors: "Projected {{count}} neighbor(s) onto the map",
     localBrowserOnly: "this browser only",
     deleteEdgeConfirm:
-      "Delete selected link(s)? This removes them from Fabric globally; LLDP may recreate them on the next collect.",
-    edgeDeleted: "Deleted {{count}} link(s)",
+      "Remove selected link(s) from the canvas? They are deleted from Fabric only when you Save. LLDP may recreate them on the next collect.",
+    edgeDeleted: "Queued {{count}} link delete(s) — Save to apply",
     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.",
@@ -1418,8 +1421,8 @@ const en = {
     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)",
+      "Remove {{nodes}} NE(s) from this map and {{edges}} link(s)? Link deletes apply on Save; NE remove from map applies on Save.",
+    selectionDeleted: "Queued: remove {{nodes}} NE(s), delete {{edges}} link(s) — Save to apply",
     newMap: "New",
     newMapName: "New topology",
     rename: "Rename",
@@ -1498,6 +1501,10 @@ const en = {
     openWebcrt: "Open terminal",
     openNe: "NE details",
     removeNode: "Remove from canvas",
+    deletePlaceholder: "Delete placeholder",
+    deletePlaceholderConfirm:
+      "Permanently delete this placeholder NE (inventory + Fabric links)? This cannot be undone with canvas Undo.",
+    deletePlaceholderDone: "Placeholder deleted",
     removeEdge: "Delete edge",
     nodeMenu: "Node",
     paneMenu: "Canvas",
@@ -1610,8 +1617,9 @@ const en = {
     locateOnCanvas: "Click to locate on canvas",
     openPortTraffic: "Open port traffic",
     removeStale: "Clear missing ({{count}})",
-    removeStaleHint: "Manually delete red missing edges; scheduled collect also purges after 4 consecutive misses",
-    staleRemoved: "Removed {{count}} missing edge(s)",
+    removeStaleHint:
+      "Queue delete of red missing edges (applies on Save); scheduled collect also purges after 4 consecutive misses",
+    staleRemoved: "Queued {{count}} missing edge delete(s) — Save to apply",
     connectHint: "Connect mode: click source node, then target (Esc or Select to exit)",
   },
   topoClassify: {

web/src/i18n/zh.ts

@@ -712,10 +712,12 @@ const zh = {
     edit: "编辑",
     delete: "删除",
     openTerminal: "终端",
-    confirmDelete: "确定删除该网元？",
+    confirmDelete:
+      "确定删除该网元？若拓扑中仅绑定此运维网元（无 UME），将同时删除对应 Fabric 节点及其直连链路。",
     batchDelete: "批量删除",
     batchDeleting: "删除中…",
-    batchDeleteConfirm: "确定删除选中的 {{n}} 台网元？此操作不可恢复。",
+    batchDeleteConfirm:
+      "确定删除选中的 {{n}} 台网元？不可恢复。仅绑定运维侧的节点会级联清除 Fabric 节点与直连链路；仍绑 UME 的会保留拓扑。",
     batchDeleteDone: "已删除 {{n}} 台网元",
     batchDeleteSelectRequired: "请先勾选要删除的网元",
     keywordPh: "名称 / IP / 用户名 / 标签",
@@ -777,7 +779,8 @@ const zh = {
       syncing: "同步中…",
       delete: "删除 UME 网元",
       deleting: "删除中…",
-      deleteConfirm: "确定删除所有通过 UME 同步到网元管理中的网元？此操作不可恢复。",
+      deleteConfirm:
+        "确定删除所有通过 UME 同步到网元管理中的网元？不可恢复。仅绑定这些 ManagedNE、且无 UME 投影的 Fabric 节点会连同直连链路一并清除。",
       done: "UME 同步完成：新增 {{inserted}}，更新 {{updated}}，删除 {{deleted}}，UME 清单共 {{total}} 台",
       deletedDone: "已删除 {{n}} 台 UME 同步网元",
     },
@@ -1400,16 +1403,17 @@ const zh = {
     projectNeighbors: "投影邻居上图",
     projectedNeighbors: "已投影 {{count}} 个邻居上图",
     localBrowserOnly: "仅本浏览器",
-    deleteEdgeConfirm: "删除选中链路？将从 Fabric 全局移除；LLDP 下次采集若仍存在可能再次出现。",
-    edgeDeleted: "已删除 {{count}} 条链路",
+    deleteEdgeConfirm: "从画布移除选中链路？仅在点击「保存」后才会从 Fabric 删除；LLDP 下次采集若仍存在可能再次出现。",
+    edgeDeleted: "已标记删除 {{count}} 条链路（保存后生效）",
     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",
+    deleteSelectionConfirm:
+      "从本图移除 {{nodes}} 个网元、删除 {{edges}} 条链路？移出与链路删除均在点击「保存」后生效。",
+    selectionDeleted: "已标记：移除 {{nodes}} 个网元、删除 {{edges}} 条链路（保存后生效）",
     newMap: "新建",
     newMapName: "新拓扑图",
     rename: "重命名",
@@ -1488,6 +1492,9 @@ const zh = {
     openWebcrt: "打开终端",
     openNe: "网元详情",
     removeNode: "从画布移除",
+    deletePlaceholder: "删除占位网元",
+    deletePlaceholderConfirm: "永久删除此占位网元（含库存记录与 Fabric 直连链路）？画布撤销无法恢复。",
+    deletePlaceholderDone: "占位网元已删除",
     removeEdge: "删除链路",
     nodeMenu: "网元",
     paneMenu: "画布",
@@ -1598,8 +1605,8 @@ const zh = {
     locateOnCanvas: "点击定位到画布",
     openPortTraffic: "打开端口流量",
     removeStale: "清除未发现 ({{count}})",
-    removeStaleHint: "手动删除红色未发现链路；周期采集连续 4 次未发现也会自动清理",
-    staleRemoved: "已删除 {{count}} 条未发现链路",
+    removeStaleHint: "标记删除红色未发现链路（保存后生效）；周期采集连续 4 次未发现也会自动清理",
+    staleRemoved: "已标记删除 {{count}} 条未发现链路（保存后生效）",
     connectHint: "连线模式：依次点击源节点 → 目标节点（Esc 或切回选择退出）",
   },
   topoClassify: {