feat: add topology view mode with router icons and link-style edges

Canvas-global nodeViewMode (bubble/card/topology) can be set at create or via prefs; topology draws NE routers with straight blue center links and exposes router icon to agents.

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

packages/dsh-plugin/lib/tools.js

@@ -139,7 +139,7 @@ export function mindmapToolDefinitions(getBase, getCanvasIdForSession, setActive
     {
       name: 'mindmap_create_canvas',
       description:
-        'Create a brand-new mind-map canvas (new id; does NOT overwrite existing canvases), bind it to this chat session, and open it in the 思维导图 tab. Canvas starts visually empty. Top-level nodes: omit parentId.',
+        'Create a brand-new mind-map canvas (new id; does NOT overwrite existing canvases), bind it to this chat session, and open it in the 思维导图 tab. Canvas starts visually empty. Top-level nodes: omit parentId. Optional nodeViewMode (bubble|card|topology) is a canvas-global preference (can also be changed later via set_prefs).',
       parameters: {
         type: 'object',
         additionalProperties: false,
@@ -150,6 +150,12 @@ export function mindmapToolDefinitions(getBase, getCanvasIdForSession, setActive
             description:
               'Optional internal label / title sync only — there is no visible root node. Prefer title alone.',
           },
+          nodeViewMode: {
+            type: 'string',
+            enum: ['bubble', 'card', 'topology'],
+            description:
+              'Canvas-global chrome (bubble|card|topology). Prefer setting when creating a topology map; default card. topology = router icons + straight blue links.',
+          },
         },
       },
       output: { schema: OBJECT, render: (_a, v) => jsonText(v) },
@@ -636,6 +642,7 @@ There is NO visible root node. Canvas title is metadata only. Internally top-lev
 
 When the user asks to build a map (e.g. 「输出红楼梦人物关系图」):
 1. mindmap_create_canvas({ title: "红楼梦人物关系" }) — ALWAYS creates a NEW canvas id (never overwrites an old one). Opens the right tab on that new canvas.
+   Topology diagrams: mindmap_create_canvas({ title: "…拓扑", nodeViewMode: "topology" }) then nodes with icon:"router".
 2. mindmap_get_spatial_context — orient on the NEW empty canvas
 3. mindmap_apply_direct({ ops: [ {type:"batch_create", nodes:[...]}, {type:"auto_fit"} ] })
 4. Keep adding in small batches; never dump a full tree JSON overwrite

packages/graph-core/src/index.ts

@@ -123,6 +123,7 @@ function promoteChildrenOnDelete(g: MutableGraph, nodeId: string): Op[] {
 export function createEmptyGraph(
   title = "未命名画布",
   rootText?: string,
+  prefsOverride?: Partial<CanvasPrefs>,
 ): MutableGraph {
   const canvasId = newId("c");
   const nodeId = newId("n");
@@ -137,6 +138,7 @@ export function createEmptyGraph(
     showHoverCard: true,
     inspectorMode: "selection",
     nodeViewMode: "card",
+    ...prefsOverride,
   };
   const canvas: CanvasMeta = {
     id: canvasId,

packages/graph-store/src/index.ts

@@ -276,8 +276,12 @@ CREATE INDEX IF NOT EXISTS idx_snapshots_canvas ON snapshots(canvas_id);
     };
   }
 
-  createCanvas(title?: string, rootText?: string): MutableGraph {
-    const g = createEmptyGraph(title ?? "未命名画布", rootText);
+  createCanvas(
+    title?: string,
+    rootText?: string,
+    prefsOverride?: Partial<CanvasMeta["prefs"]>,
+  ): MutableGraph {
+    const g = createEmptyGraph(title ?? "未命名画布", rootText, prefsOverride);
     this.persistGraph(g, true);
     this.cache.set(g.canvas.id, g);
     return g;

packages/layout-engine/src/index.ts

@@ -12,7 +12,7 @@ export type LayoutInput = {
   edges: MindEdge[];
   focusNodeId: string;
   density?: Density;
-  /** Canvas-wide bubble vs card chrome (affects box sizes). */
+  /** Canvas-wide bubble vs card vs topology chrome (affects box sizes). */
   nodeViewMode?: NodeViewMode;
   /** Previous frame positions — reused when hierarchy structure is unchanged. */
   prevPositions?: PositionMap;
@@ -52,8 +52,18 @@ export function nodeLayoutSize(
     | "pinned"
   >,
   dens: Dens,
-  opts?: { asCard?: boolean },
+  opts?: { asCard?: boolean; asTopology?: boolean },
 ): { w: number; h: number } {
+  if (opts?.asTopology) {
+    const icon = dens.nodeW >= 200 ? 36 : 30;
+    const caption = dens.nodeW >= 200 ? 20 : 18;
+    const gap = 6;
+    const pad = dens.nodeW >= 200 ? 8 : 6;
+    return {
+      w: Math.max(dens.nodeW >= 200 ? 88 : 72, icon + pad * 2),
+      h: icon + gap + caption + pad,
+    };
+  }
   let w = dens.nodeW;
   let h = dens.nodeH;
   // meta strip (badges / tags / due)
@@ -248,7 +258,7 @@ function buildSubtree(
   children: Map<string, string[]>,
   dens: Dens,
   path: Set<string>,
-  asCard: boolean,
+  sizeOpts: { asCard?: boolean; asTopology?: boolean },
   childFilter?: (childId: string) => boolean,
 ): FlexDatum | null {
   if (path.has(id)) return null;
@@ -266,12 +276,12 @@ function buildSubtree(
         children,
         dens,
         nextPath,
-        asCard,
+        sizeOpts,
       );
       if (child) kids.push(child);
     }
   }
-  const box = nodeLayoutSize(node, dens, { asCard });
+  const box = nodeLayoutSize(node, dens, sizeOpts);
   return {
     id,
     // flextree size = full box + gutters (claim real space, not a rigid grid cell)
@@ -397,6 +407,7 @@ export function hierarchyFingerprint(edges: MindEdge[]): string {
 export function layout(input: LayoutInput): PositionMap {
   const dens = DENSITY[input.density ?? "comfortable"];
   const asCard = input.nodeViewMode === "card";
+  const asTopology = input.nodeViewMode === "topology";
   const nodesById = new Map(input.nodes.map((n) => [n.id, n]));
   if (!nodesById.has(input.focusNodeId)) return {};
 
@@ -407,7 +418,7 @@ export function layout(input: LayoutInput): PositionMap {
   const sizes = new Map<string, { w: number; h: number }>();
   for (const n of input.nodes) {
     if (n.deletedAt || hidden.has(n.id)) continue;
-    sizes.set(n.id, nodeLayoutSize(n, dens, { asCard }));
+    sizes.set(n.id, nodeLayoutSize(n, dens, { asCard, asTopology }));
   }
 
   const prev = input.prevPositions;
@@ -501,7 +512,7 @@ export function layout(input: LayoutInput): PositionMap {
       children,
       dens,
       new Set(),
-      asCard,
+      { asCard, asTopology },
       (childId) => sideOf.get(childId) === side,
     );
     if (!tree?.children?.length) continue;

packages/shared/src/ops.ts

@@ -342,6 +342,12 @@ export const OP_SCHEMA_DOC = {
       ],
       _comment: "Bulk relation/hierarchy links (max 100). Prefer after nodes exist.",
     },
+    {
+      type: "create_node",
+      text: "核心交换机",
+      alias: "core_sw",
+      icon: "router",
+    },
     {
       type: "create_node",
       text: "AIOps诊断",
@@ -494,9 +500,11 @@ export const OP_SCHEMA_DOC = {
     restore_node:
       "Soft-deleted nodes keep their id. Pass that id (or deleted @alias / unique title). Restores compatible incident edges; children already promoted stay under the new parent.",
     create_node:
-      "Omit parentId for top-level. Optional pos pins immediately. Optional alias. Optional relations[] for outgoing graph edges (not URL links). Optional description object.",
+      "Omit parentId for top-level. Optional pos pins immediately. Optional alias. Optional icon (server|database|cloud|person|folder|doc|link|warning|check|star|gear|globe|router). Optional relations[] for outgoing graph edges (not URL links). Optional description object.",
     update_node_meta:
-      "Patch note/description/tags/links/imageUrl/dueAt/startAt/accentColor/icon/alias. description is a JSON object (knowledge fields). Null clears scalar fields. links = URL bookmarks.",
+      "Patch note/description/tags/links/imageUrl/dueAt/startAt/accentColor/icon/alias. icon enum same as create_node. description is a JSON object (knowledge fields). Null clears scalar fields. links = URL bookmarks.",
+    set_prefs:
+      "Partial canvas prefs: density, branchColoring, nodeViewMode (bubble|card|topology; canvas-global), showHoverCard, nodeBadges, showRelationEdges, riskProfile, themeId, inspectorMode.",
     update_edge_meta:
       "Patch label/tags/note/weight(1-5)/lineStyle(solid|dashed|dotted)/direction(forward|both|none) on an edge.",
     set_edge_label: "Need edgeId from spatial_context.edges or get_subgraph.",

packages/shared/src/types.ts

@@ -29,8 +29,8 @@ export type NodeBadges = z.infer<typeof NodeBadgesSchema>;
 export const InspectorModeSchema = z.enum(["selection", "always"]);
 export type InspectorMode = z.infer<typeof InspectorModeSchema>;
 
-/** Whole-canvas node chrome: bubble titles vs property cards. */
-export const NodeViewModeSchema = z.enum(["bubble", "card"]);
+/** Whole-canvas node chrome: bubble titles vs property cards vs topology icons. */
+export const NodeViewModeSchema = z.enum(["bubble", "card", "topology"]);
 export type NodeViewMode = z.infer<typeof NodeViewModeSchema>;
 
 /** Controlled node icon set (agent/UI). */
@@ -47,6 +47,7 @@ export const NodeIconSchema = z.enum([
   "star",
   "gear",
   "globe",
+  "router",
 ]);
 export type NodeIcon = z.infer<typeof NodeIconSchema>;