feat(web): MazeNET 7a — canvas chrome + node-head visuals

Toolbar (RESET VIEW / AUTO-LAYOUT), status bar (GRAPH LIVE + pan + as-of
timestamp), 4-row legend, and archetype icon + status dot in each node
head.

decnet_web/src/components/MazeNET/Canvas.tsx

@@ -1,4 +1,5 @@
 import React, { forwardRef, useMemo } from 'react';
+import { RotateCcw, LayoutGrid } from 'lucide-react';
 import NetBox from './NetBox';
 import NodeCard from './NodeCard';
 import type { Net, MazeNode, Edge } from './types';
@@ -25,15 +26,23 @@ interface Props {
   onNetContextMenu?: (id: string) => (e: React.MouseEvent) => void;
   onEdgeContextMenu?: (id: string) => (e: React.MouseEvent) => void;
   onCanvasContextMenu?: (e: React.MouseEvent) => void;
+  onResetView?: () => void;
+  onAutoLayout?: () => void;
+  sseConnected?: boolean;
+  lastEventAt?: Date | null;
 }
 
+const fmtTime = (d: Date) =>
+  `${String(d.getHours()).padStart(2, '0')}:${String(d.getMinutes()).padStart(2, '0')}:${String(d.getSeconds()).padStart(2, '0')}`;
+
 const NODE_W = 140;
 const NODE_HEAD_H = 22;
 
 const Canvas = forwardRef<HTMLDivElement, Props>(function Canvas(
   { nets, nodes, edges, deployed, selection, setSelection, pan, dropTargetId, dragging, edgeDraw,
     onCanvasMouseDown, onNodeMouseDown, onNetMouseDown, onNetResizeMouseDown, onPortMouseDown,
-    onNodeContextMenu, onNetContextMenu, onEdgeContextMenu, onCanvasContextMenu },
+    onNodeContextMenu, onNetContextMenu, onEdgeContextMenu, onCanvasContextMenu,
+    onResetView, onAutoLayout, sseConnected, lastEventAt },
   ref,
 ) {
   const netById = useMemo(() => new Map(nets.map((n) => [n.id, n])), [nets]);
@@ -169,10 +178,35 @@ const Canvas = forwardRef<HTMLDivElement, Props>(function Canvas(
         </div>
       </div>
 
+      {(onResetView || onAutoLayout) && (
+        <div className="maze-toolbar">
+          {onResetView && (
+            <button type="button" className="maze-btn ghost small" onClick={onResetView} title="Reset pan to origin">
+              <RotateCcw size={11} /> RESET VIEW
+            </button>
+          )}
+          {onAutoLayout && (
+            <button type="button" className="maze-btn ghost small" onClick={onAutoLayout} title="Auto-layout nodes">
+              <LayoutGrid size={11} /> AUTO-LAYOUT
+            </button>
+          )}
+        </div>
+      )}
+
+      <div className="maze-status">
+        <span className={`status-seg ${sseConnected ? 'live' : 'dim'}`}>
+          <span className={`status-dot ${sseConnected ? 'active' : 'idle'}`} />
+          GRAPH {sseConnected ? 'LIVE' : 'IDLE'}
+        </span>
+        <span className="status-seg">PAN: {Math.round(pan.x)},{Math.round(pan.y)}</span>
+        <span className="status-seg">AS-OF {lastEventAt ? fmtTime(lastEventAt) : '--:--:--'}</span>
+      </div>
+
       <div className="maze-legend">
-        <div className="lg-row"><span className="lg-swatch" style={{ background: '#ff4141' }} /> HOT</div>
+        <div className="lg-row"><span className="lg-swatch alert" /> ACTIVE ATTACK</div>
-        <div className="lg-row"><span className="lg-swatch" style={{ background: '#ee82ee' }} /> ACTIVE</div>
+        <div className="lg-row"><span className="lg-swatch violet" /> OBSERVED FLOW</div>
-        <div className="lg-row"><span className="lg-swatch" style={{ background: '#00ff41' }} /> IDLE</div>
+        <div className="lg-row"><span className="lg-swatch matrix" /> CONFIGURED</div>
+        <div className="lg-row"><span className="lg-swatch inactive" /> INACTIVE NET</div>
       </div>
     </div>
   );

decnet_web/src/components/MazeNET/MazeNET.css

@@ -274,7 +274,30 @@
   display: flex; flex-direction: column; gap: 4px;
 }
 .maze-legend .lg-row { display: flex; align-items: center; gap: 6px; }
-.maze-legend .lg-swatch { width: 14px; height: 2px; }
+.maze-legend .lg-swatch { width: 14px; height: 2px; background: var(--matrix); }
+.maze-legend .lg-swatch.alert    { background: var(--alert); box-shadow: 0 0 6px var(--alert); }
+.maze-legend .lg-swatch.violet   { background: var(--violet); box-shadow: 0 0 6px var(--violet); }
+.maze-legend .lg-swatch.matrix   { background: var(--matrix); }
+.maze-legend .lg-swatch.inactive {
+  background: transparent;
+  height: 0;
+  border-top: 1px dashed var(--border);
+}
+
+/* Status bar segments */
+.maze-status .status-seg { display: inline-flex; align-items: center; gap: 6px; white-space: nowrap; }
+.maze-status .status-seg.live   { color: var(--matrix); opacity: 0.9; }
+.maze-status .status-seg.dim    { opacity: 0.45; }
+
+/* Toolbar button sizing override */
+.maze-toolbar .maze-btn.small {
+  padding: 4px 10px; font-size: 0.62rem; letter-spacing: 1.5px;
+  background: rgba(0, 0, 0, 0.6);
+}
+
+/* NodeCard head icon alignment */
+.maze-node .mn-head .mn-head-icon { opacity: 0.8; flex-shrink: 0; }
+.maze-node .mn-head .mn-head-name { overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
 
 /* ── Inspector ──────────────────────────────── */
 .maze-inspector {

decnet_web/src/components/MazeNET/MazeNET.tsx

@@ -20,6 +20,7 @@ import { useMazeInteraction, type PaletteDrag } from './useMazeInteraction';
 import { useLayoutPersistor } from './useMazeLayoutStore';
 import { useTopologyStream, type TopologyStreamEvent } from './useTopologyStream';
 import { ARCHETYPES as DEFAULT_ARCHETYPES } from './data';
+import { useToast } from '../Toasts/useToast';
 
 /* Short unique suffix for default names — avoids the DB uniqueness
  * constraint regardless of delete/re-add sequencing on the client. */
@@ -33,6 +34,7 @@ const hex4 = (): string => {
 const MazeNET: React.FC = () => {
   const api = useMazeApi();
   const navigate = useNavigate();
+  const { push: pushToast } = useToast();
   const [params] = useSearchParams();
   const topologyId = params.get('topology') ?? '';
 
@@ -457,6 +459,7 @@ const MazeNET: React.FC = () => {
    * keepalives.  On any state-transition event we refetch; DB is the
    * source of truth and the bus is at-most-once. */
   const [streamLive, setStreamLive] = useState(false);
+  const [lastEventAt, setLastEventAt] = useState<Date | null>(null);
   const streamEnabled = topoStatus === 'active' || topoStatus === 'degraded';
   const onStreamEvent = useCallback((event: TopologyStreamEvent) => {
     // Flip LIVE only on named, purposeful events — not incidental keepalives.
@@ -464,6 +467,7 @@ const MazeNET: React.FC = () => {
       || event.name.startsWith('mutation.')
       || event.name === 'status') {
       setStreamLive(true);
+      setLastEventAt(new Date());
     }
     if (event.name === 'mutation.failed') {
       const p = event.payload ?? {};
@@ -529,7 +533,7 @@ const MazeNET: React.FC = () => {
           </div>
         </div>
         <div className="maze-page-actions">
-          <button type="button" className="maze-btn ghost" onClick={() => navigate('/topologies')}>
+          <button type="button" className="maze-btn ghost" onClick={() => navigate('/mazenet')}>
             <ArrowLeft size={12} /> TOPOLOGIES
           </button>
           <button type="button" className="maze-btn ghost" onClick={() => setInspectorOpen((o) => !o)}>
@@ -576,6 +580,10 @@ const MazeNET: React.FC = () => {
           onNetContextMenu={onNetContextMenu}
           onEdgeContextMenu={onEdgeContextMenu}
           onCanvasContextMenu={onCanvasContextMenu}
+          onResetView={interaction.resetPan}
+          onAutoLayout={() => pushToast({ text: 'AUTO-LAYOUT COMING SOON', tone: 'violet', icon: 'info' })}
+          sseConnected={streamLive}
+          lastEventAt={lastEventAt}
         />
         {ctxMenu && (
           <ContextMenu x={ctxMenu.x} y={ctxMenu.y} items={ctxMenu.items} onClose={() => setCtxMenu(null)} />

decnet_web/src/components/MazeNET/NodeCard.tsx

@@ -1,6 +1,22 @@
 import React from 'react';
+import {
+  Server, Monitor, Shield, Database, Cpu, Globe, Users, HardDrive, Eye,
+  type LucideIcon,
+} from 'lucide-react';
 import type { MazeNode } from './types';
 
+const ARCHETYPE_ICONS: Record<string, LucideIcon> = {
+  'linux-server': Server,
+  'windows-workstation': Monitor,
+  'domain-controller': Shield,
+  'database-server': Database,
+  'iot-device': Cpu,
+  'web-application': Globe,
+  'deaddeck': HardDrive,
+  'attacker-pool': Eye,
+  'directory-services': Users,
+};
+
 interface Props {
   node: MazeNode;
   absX: number;
@@ -38,7 +54,14 @@ const NodeCard: React.FC<Props> = ({ node, absX, absY, selected, dragging, deplo
       onMouseDown={handleDown}
       onContextMenu={onContextMenu?.(node.id)}
     >
-      <div className="mn-head">{node.name}</div>
+      <div className="mn-head">
+        <span className={`status-dot ${node.status}`} />
+        {(() => {
+          const Icon = ARCHETYPE_ICONS[node.archetype] ?? Server;
+          return <Icon size={10} className="mn-head-icon" />;
+        })()}
+        <span className="mn-head-name">{node.name}</span>
+      </div>
       <div className="mn-sub">{node.archetype.toUpperCase()}</div>
       {node.services.length > 0 && (
         <div className="mn-services">