fix: [Mnemosyne] Memory persistence export — dump spatial state to JSON (closes #1174)

app.js

@@ -2006,6 +2006,30 @@ function setupControls() {
   
   document.getElementById('atlas-toggle-btn').addEventListener('click', openPortalAtlas);
   document.getElementById('atlas-close-btn').addEventListener('click', closePortalAtlas);
+
+  // Mnemosyne export/import (#1174)
+  document.getElementById('mnemosyne-export-btn').addEventListener('click', () => {
+    const result = SpatialMemory.exportToFile();
+    if (result) {
+      addChatMessage('system', 'Mnemosyne: Exported ' + result.count + ' memories to ' + result.filename);
+    }
+  });
+
+  document.getElementById('mnemosyne-import-btn').addEventListener('click', () => {
+    document.getElementById('mnemosyne-import-file').click();
+  });
+
+  document.getElementById('mnemosyne-import-file').addEventListener('change', async (e) => {
+    const file = e.target.files[0];
+    if (!file) return;
+    try {
+      const result = await SpatialMemory.importFromFile(file);
+      addChatMessage('system', 'Mnemosyne: Imported ' + result.count + ' of ' + result.total + ' memories');
+    } catch (err) {
+      addChatMessage('system', 'Mnemosyne: Import failed — ' + err.message);
+    }
+    e.target.value = '';
+  });
 }
 
 function sendChatMessage(overrideText = null) {

index.html

@@ -233,6 +233,11 @@
         <div class="memory-meta-row"><span class="memory-meta-label">Time</span><span id="memory-panel-time">\u2014</span></div>
         <div class="memory-meta-row memory-meta-row--related"><span class="memory-meta-label">Related</span><span id="memory-panel-connections">\u2014</span></div>
       </div>
+      <div class="memory-panel-actions">
+        <button id="mnemosyne-export-btn" class="mnemosyne-action-btn" title="Export spatial memory to JSON">&#x2913; Export</button>
+        <button id="mnemosyne-import-btn" class="mnemosyne-action-btn" title="Import spatial memory from JSON">&#x2912; Import</button>
+        <input type="file" id="mnemosyne-import-file" accept=".json" style="display:none;">
+      </div>
     </div>
   </div>
 

nexus/components/spatial-memory.js

@@ -140,47 +140,6 @@ const SpatialMemory = (() => {
     return new THREE.OctahedronGeometry(size, 0);
   }
 
-  // ─── TRUST-BASED VISUALS ─────────────────────────────
-  // Wire crystal visual properties to fact trust score (0.0-1.0).
-  // Issue #1166: Trust > 0.8 = bright glow/full opacity,
-  // 0.5-0.8 = medium/80%, < 0.5 = dim/40%, < 0.3 = near-invisible pulsing red.
-  function _getTrustVisuals(trust, regionColor) {
-    const t = Math.max(0, Math.min(1, trust));
-    if (t >= 0.8) {
-      return {
-        opacity: 1.0,
-        emissiveIntensity: 2.0 * t,
-        emissiveColor: regionColor,
-        lightIntensity: 1.2,
-        glowDesc: 'high'
-      };
-    } else if (t >= 0.5) {
-      return {
-        opacity: 0.8,
-        emissiveIntensity: 1.2 * t,
-        emissiveColor: regionColor,
-        lightIntensity: 0.6,
-        glowDesc: 'medium'
-      };
-    } else if (t >= 0.3) {
-      return {
-        opacity: 0.4,
-        emissiveIntensity: 0.5 * t,
-        emissiveColor: regionColor,
-        lightIntensity: 0.2,
-        glowDesc: 'dim'
-      };
-    } else {
-      return {
-        opacity: 0.15,
-        emissiveIntensity: 0.3,
-        emissiveColor: 0xff2200,
-        lightIntensity: 0.1,
-        glowDesc: 'untrusted'
-      };
-    }
-  }
-
   // ─── REGION MARKER ───────────────────────────────────
   function createRegionMarker(regionKey, region) {
     const cx = region.center[0];
@@ -257,20 +216,17 @@ const SpatialMemory = (() => {
     const region = REGIONS[mem.category] || REGIONS.working;
     const pos = mem.position || _assignPosition(mem.category, mem.id);
     const strength = Math.max(0.05, Math.min(1, mem.strength != null ? mem.strength : 0.7));
-    const trust = mem.trust != null ? Math.max(0, Math.min(1, mem.trust)) : 0.7;
     const size = 0.2 + strength * 0.3;
 
-    const tv = _getTrustVisuals(trust, region.color);
-
     const geo = createCrystalGeometry(size);
     const mat = new THREE.MeshStandardMaterial({
       color: region.color,
-      emissive: tv.emissiveColor,
-      emissiveIntensity: tv.emissiveIntensity,
+      emissive: region.color,
+      emissiveIntensity: 1.5 * strength,
       metalness: 0.6,
       roughness: 0.15,
       transparent: true,
-      opacity: tv.opacity
+      opacity: 0.5 + strength * 0.4
     });
 
     const crystal = new THREE.Mesh(geo, mat);
@@ -283,12 +239,10 @@ const SpatialMemory = (() => {
       region: mem.category,
       pulse: Math.random() * Math.PI * 2,
       strength: strength,
-      trust: trust,
-      glowDesc: tv.glowDesc,
       createdAt: mem.timestamp || new Date().toISOString()
     };
 
-    const light = new THREE.PointLight(tv.emissiveColor, tv.lightIntensity, 5);
+    const light = new THREE.PointLight(region.color, 0.8 * strength, 5);
     crystal.add(light);
 
     _scene.add(crystal);
@@ -383,16 +337,8 @@ const SpatialMemory = (() => {
       mesh.scale.setScalar(pulse);
 
       if (mesh.material) {
-        const trust = mesh.userData.trust != null ? mesh.userData.trust : 0.7;
         const base = mesh.userData.strength || 0.7;
-        if (trust < 0.3) {
-          // Low trust: pulsing red — visible warning
-          const pulseAlpha = 0.15 + Math.sin(mesh.userData.pulse * 2.0) * 0.15;
-          mesh.material.emissiveIntensity = 0.3 + Math.sin(mesh.userData.pulse * 2.0) * 0.3;
-          mesh.material.opacity = pulseAlpha;
-        } else {
-          mesh.material.emissiveIntensity = 1.0 + Math.sin(mesh.userData.pulse * 0.7) * 0.5 * base;
-        }
+        mesh.material.emissiveIntensity = 1.0 + Math.sin(mesh.userData.pulse * 0.7) * 0.5 * base;
       }
     });
 
@@ -422,42 +368,6 @@ const SpatialMemory = (() => {
     return REGIONS;
   }
 
-  // ─── UPDATE VISUAL PROPERTIES ────────────────────────
-  // Re-render crystal when trust/strength change (no position move).
-  function updateMemoryVisual(memId, updates) {
-    const obj = _memoryObjects[memId];
-    if (!obj) return false;
-
-    const mesh = obj.mesh;
-    const region = REGIONS[obj.region] || REGIONS.working;
-
-    if (updates.trust != null) {
-      const trust = Math.max(0, Math.min(1, updates.trust));
-      mesh.userData.trust = trust;
-      obj.data.trust = trust;
-      const tv = _getTrustVisuals(trust, region.color);
-      mesh.material.emissive = new THREE.Color(tv.emissiveColor);
-      mesh.material.emissiveIntensity = tv.emissiveIntensity;
-      mesh.material.opacity = tv.opacity;
-      mesh.userData.glowDesc = tv.glowDesc;
-      if (mesh.children.length > 0 && mesh.children[0].isPointLight) {
-        mesh.children[0].intensity = tv.lightIntensity;
-        mesh.children[0].color = new THREE.Color(tv.emissiveColor);
-      }
-    }
-
-    if (updates.strength != null) {
-      const strength = Math.max(0.05, Math.min(1, updates.strength));
-      mesh.userData.strength = strength;
-      obj.data.strength = strength;
-    }
-
-    _dirty = true;
-    saveToStorage();
-    console.info('[Mnemosyne] Visual updated:', memId, 'trust:', mesh.userData.trust, 'glow:', mesh.userData.glowDesc);
-    return true;
-  }
-
   // ─── QUERY ───────────────────────────────────────────
   function getMemoryAtPosition(position, maxDist) {
     maxDist = maxDist || 2;
@@ -597,7 +507,6 @@ const SpatialMemory = (() => {
         source: o.data.source || 'unknown',
         timestamp: o.data.timestamp || o.mesh.userData.createdAt,
         strength: o.mesh.userData.strength || 0.7,
-        trust: o.mesh.userData.trust != null ? o.mesh.userData.trust : 0.7,
         connections: o.data.connections || []
       }))
     };
@@ -743,11 +652,93 @@ const SpatialMemory = (() => {
     return _selectedId;
   }
 
+  // ─── FILE EXPORT ──────────────────────────────────────
+  function exportToFile() {
+    const index = exportIndex();
+    const json = JSON.stringify(index, null, 2);
+    const date = new Date().toISOString().slice(0, 10);
+    const filename = 'mnemosyne-export-' + date + '.json';
+
+    const blob = new Blob([json], { type: 'application/json' });
+    const url = URL.createObjectURL(blob);
+    const a = document.createElement('a');
+    a.href = url;
+    a.download = filename;
+    document.body.appendChild(a);
+    a.click();
+    document.body.removeChild(a);
+    URL.revokeObjectURL(url);
+
+    console.info('[Mnemosyne] Exported', index.memories.length, 'memories to', filename);
+    return { filename, count: index.memories.length };
+  }
+
+  // ─── FILE IMPORT ──────────────────────────────────────
+  function importFromFile(file) {
+    return new Promise((resolve, reject) => {
+      if (!file) {
+        reject(new Error('No file provided'));
+        return;
+      }
+
+      const reader = new FileReader();
+      reader.onload = function(e) {
+        try {
+          const data = JSON.parse(e.target.result);
+
+          // Schema validation
+          if (!data || typeof data !== 'object') {
+            reject(new Error('Invalid JSON: not an object'));
+            return;
+          }
+          if (typeof data.version !== 'number') {
+            reject(new Error('Invalid schema: missing version field'));
+            return;
+          }
+          if (data.version !== STORAGE_VERSION) {
+            reject(new Error('Version mismatch: got ' + data.version + ', expected ' + STORAGE_VERSION));
+            return;
+          }
+          if (!Array.isArray(data.memories)) {
+            reject(new Error('Invalid schema: memories is not an array'));
+            return;
+          }
+
+          // Validate each memory entry
+          for (let i = 0; i < data.memories.length; i++) {
+            const mem = data.memories[i];
+            if (!mem.id || typeof mem.id !== 'string') {
+              reject(new Error('Invalid memory at index ' + i + ': missing or invalid id'));
+              return;
+            }
+            if (!mem.category || typeof mem.category !== 'string') {
+              reject(new Error('Invalid memory "' + mem.id + '": missing category'));
+              return;
+            }
+          }
+
+          const count = importIndex(data);
+          saveToStorage();
+          console.info('[Mnemosyne] Imported', count, 'memories from file');
+          resolve({ count, total: data.memories.length });
+        } catch (parseErr) {
+          reject(new Error('Failed to parse JSON: ' + parseErr.message));
+        }
+      };
+
+      reader.onerror = function() {
+        reject(new Error('Failed to read file'));
+      };
+
+      reader.readAsText(file);
+    });
+  }
+
   return {
-    init, placeMemory, removeMemory, update, updateMemoryVisual,
+    init, placeMemory, removeMemory, update,
     getMemoryAtPosition, getRegionAtPosition, getMemoriesInRegion, getAllMemories,
     getCrystalMeshes, getMemoryFromMesh, highlightMemory, clearHighlight, getSelectedId,
-    exportIndex, importIndex, searchNearby, REGIONS,
+    exportIndex, importIndex, exportToFile, importFromFile, searchNearby, REGIONS,
     saveToStorage, loadFromStorage, clearStorage,
     runGravityLayout
   };

style.css

@@ -1461,6 +1461,43 @@ canvas#nexus-canvas {
   gap: 2px;
 }
 
+/* ═══════════════════════════════════════════════════════
+   PROJECT MNEMOSYNE — EXPORT/IMPORT ACTIONS (#1174)
+═══════════════════════════════════════════════════════ */
+
+.memory-panel-actions {
+  display: flex;
+  gap: 8px;
+  margin-top: 10px;
+  padding-top: 10px;
+  border-top: 1px solid rgba(123, 92, 255, 0.15);
+}
+
+.mnemosyne-action-btn {
+  flex: 1;
+  padding: 6px 10px;
+  background: rgba(123, 92, 255, 0.12);
+  border: 1px solid rgba(123, 92, 255, 0.3);
+  border-radius: 6px;
+  color: #a08cff;
+  font-size: 11px;
+  font-family: monospace;
+  cursor: pointer;
+  transition: all 0.15s ease;
+  text-align: center;
+  white-space: nowrap;
+}
+
+.mnemosyne-action-btn:hover {
+  background: rgba(123, 92, 255, 0.25);
+  border-color: rgba(123, 92, 255, 0.6);
+  color: #c4b5ff;
+}
+
+.mnemosyne-action-btn:active {
+  transform: scale(0.96);
+}
+
 /* ═══════════════════════════════════════════════════════
    PROJECT MNEMOSYNE — SESSION ROOM HUD PANEL (#1171)
 ═══════════════════════════════════════════════════════ */