feat(mnemosyne): integrate SpatialMemory — import, init, update loop, demo seeds

app.js

@@ -3,6 +3,7 @@ import { EffectComposer } from 'three/addons/postprocessing/EffectComposer.js';
 import { RenderPass } from 'three/addons/postprocessing/RenderPass.js';
 import { UnrealBloomPass } from 'three/addons/postprocessing/UnrealBloomPass.js';
 import { SMAAPass } from 'three/addons/postprocessing/SMAAPass.js';
+import { SpatialMemory } from './nexus/components/spatial-memory.js';
 
 // ═══════════════════════════════════════════
 // NEXUS v1.1 — Portal System Update
@@ -703,6 +704,7 @@ async function init() {
   createSessionPowerMeter();
   createWorkshopTerminal();
   createAshStorm();
+  SpatialMemory.init(scene);
   updateLoad(90);
 
   loadSession();
@@ -2575,6 +2577,7 @@ function gameLoop() {
 
   // Project Mnemosyne - Memory Orb Animation
   if (typeof animateMemoryOrbs === 'function') {
+    SpatialMemory.update(delta);
     animateMemoryOrbs(delta);
   }
 
@@ -3093,6 +3096,17 @@ function spawnRetrievalOrbs(results, center) {
 init().then(() => {
   createAshStorm();
   createPortalTunnel();
+
+  // Project Mnemosyne — seed demo spatial memories
+  const demoMemories = [
+    { id: 'mem_nexus_birth', content: 'The Nexus came online — first render of the 3D world', category: 'knowledge', strength: 0.95, connections: ['mem_mnemosyne_start'] },
+    { id: 'mem_first_portal', content: 'First portal deployed — connection to external service', category: 'engineering', strength: 0.85, connections: ['mem_nexus_birth'] },
+    { id: 'mem_hermes_chat', content: 'First conversation through the Hermes gateway', category: 'social', strength: 0.7, connections: [] },
+    { id: 'mem_mnemosyne_start', content: 'Project Mnemosyne began — the living archive awakens', category: 'projects', strength: 0.9, connections: ['mem_nexus_birth', 'mem_spatial_schema'] },
+    { id: 'mem_spatial_schema', content: 'Spatial Memory Schema defined — memories gain permanent homes', category: 'engineering', strength: 0.8, connections: ['mem_mnemosyne_start'] },
+  ];
+  demoMemories.forEach(m => SpatialMemory.placeMemory(m));
+
   fetchGiteaData();
   setInterval(fetchGiteaData, 30000);
   runWeeklyAudit();