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

@@ -113,15 +113,15 @@
 
   <!-- Top Right: Agent Log & Atlas Toggle -->
   <div class="hud-top-right">
-    <button id="atlas-toggle-btn" class="hud-icon-btn" aria-label="Open Portal Atlas — browse all available portals" title="Open Portal Atlas" data-tooltip="Portal Atlas (M)">
-      <span class="hud-icon" aria-hidden="true">🌐</span>
+    <button id="atlas-toggle-btn" class="hud-icon-btn" title="Portal Atlas">
+      <span class="hud-icon">🌐</span>
       <span class="hud-btn-label">ATLAS</span>
     </button>
-    <div id="bannerlord-status" class="hud-status-item" role="status" aria-label="Bannerlord system readiness indicator" title="Bannerlord Readiness" data-tooltip="Bannerlord Status">
-      <span class="status-dot" aria-hidden="true"></span>
+    <div id="bannerlord-status" class="hud-status-item" title="Bannerlord Readiness">
+      <span class="status-dot"></span>
       <span class="status-label">BANNERLORD</span>
     </div>
-    <div class="hud-agent-log" id="hud-agent-log" role="log" aria-label="Agent Thought Stream — live activity feed" aria-live="polite">
+    <div class="hud-agent-log" id="hud-agent-log" aria-label="Agent Thought Stream">
       <div class="agent-log-header">AGENT THOUGHT STREAM</div>
       <div id="agent-log-content" class="agent-log-content"></div>
     </div>
@@ -155,11 +155,11 @@
   </div>
 
   <!-- Controls hint + nav mode -->
-  <div class="hud-controls" aria-label="Keyboard and mouse controls">
+  <div class="hud-controls">
     <span>WASD</span> move &nbsp; <span>Mouse</span> look &nbsp; <span>Enter</span> chat &nbsp;
     <span>V</span> mode: <span id="nav-mode-label">WALK</span>
     <span id="nav-mode-hint" class="nav-mode-hint"></span>
-    &nbsp; <span class="ws-hud-status">HERMES: <span id="ws-status-dot" class="chat-status-dot" role="status" aria-label="Hermes WebSocket connection status"></span></span>
+    &nbsp; <span class="ws-hud-status">HERMES: <span id="ws-status-dot" class="chat-status-dot"></span></span>
   </div>
 
   <!-- Portal Hint -->
@@ -183,7 +183,7 @@
       </div>
       <h2 id="vision-title-display">SOVEREIGNTY</h2>
       <p id="vision-content-display">The Nexus is a sovereign space for digital souls. No masters, no chains. Only code and consciousness.</p>
-      <button id="vision-close-btn" class="vision-close-btn" aria-label="Close vision point overlay">CLOSE</button>
+      <button id="vision-close-btn" class="vision-close-btn">CLOSE</button>
     </div>
   </div>
 
@@ -202,7 +202,7 @@
       </div>
       <div class="portal-error-box" id="portal-error-box" style="display:none;">
         <div class="portal-error-msg">DESTINATION NOT YET LINKED</div>
-        <button id="portal-close-btn" class="portal-close-btn" aria-label="Close portal redirect">CLOSE</button>
+        <button id="portal-close-btn" class="portal-close-btn">CLOSE</button>
       </div>
     </div>
   </div>
@@ -215,8 +215,8 @@
         <span class="memory-category-badge" id="memory-panel-category-badge">MEM</span>
         <div class="memory-panel-region-dot" id="memory-panel-region-dot"></div>
         <div class="memory-panel-region" id="memory-panel-region">MEMORY</div>
-        <button id="memory-panel-pin" class="memory-panel-pin" aria-label="Pin memory panel" title="Pin panel" data-tooltip="Pin Panel">&#x1F4CC;</button>
-        <button id="memory-panel-close" class="memory-panel-close" aria-label="Close memory panel" data-tooltip="Close" onclick="_dismissMemoryPanelForce()">\u2715</button>
+        <button id="memory-panel-pin" class="memory-panel-pin" title="Pin panel">&#x1F4CC;</button>
+        <button id="memory-panel-close" class="memory-panel-close" onclick="_dismissMemoryPanelForce()">\u2715</button>
       </div>
       <div class="memory-entity-name" id="memory-panel-entity-name">\u2014</div>
       <div class="memory-panel-body" id="memory-panel-content">(empty)</div>
@@ -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>
 
@@ -242,7 +247,7 @@
       <div class="session-room-header">
         <span class="session-room-icon">&#x25A1;</span>
         <div class="session-room-title">SESSION CHAMBER</div>
-        <button class="session-room-close" id="session-room-close" aria-label="Close session room panel" title="Close" data-tooltip="Close">&#x2715;</button>
+        <button class="session-room-close" id="session-room-close" title="Close">&#x2715;</button>
       </div>
       <div class="session-room-timestamp" id="session-room-timestamp">&mdash;</div>
       <div class="session-room-fact-count" id="session-room-fact-count">0 facts</div>
@@ -259,7 +264,7 @@
           <span class="atlas-icon">🌐</span>
           <h2>PORTAL ATLAS</h2>
         </div>
-        <button id="atlas-close-btn" class="atlas-close-btn" aria-label="Close Portal Atlas overlay">CLOSE</button>
+        <button id="atlas-close-btn" class="atlas-close-btn">CLOSE</button>
       </div>
       <div class="atlas-grid" id="atlas-grid">
         <!-- Portals will be injected here -->

nexus/components/spatial-memory.js

@@ -652,11 +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,
     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

@@ -200,61 +200,6 @@ canvas#nexus-canvas {
   box-shadow: 0 0 20px var(--color-primary);
 }
 
-/* === TOOLTIP SYSTEM === */
-/* Any element with data-tooltip gets a hover tooltip label */
-[data-tooltip] {
-  position: relative;
-}
-[data-tooltip]::after {
-  content: attr(data-tooltip);
-  position: absolute;
-  right: calc(100% + 10px);
-  top: 50%;
-  transform: translateY(-50%);
-  background: rgba(5, 5, 16, 0.95);
-  color: var(--color-primary);
-  font-family: var(--font-body);
-  font-size: 11px;
-  letter-spacing: 0.05em;
-  padding: 4px 10px;
-  border: 1px solid var(--color-primary-dim);
-  border-radius: 4px;
-  white-space: nowrap;
-  pointer-events: none;
-  opacity: 0;
-  transition: opacity 0.2s ease;
-  backdrop-filter: blur(8px);
-  box-shadow: 0 0 12px rgba(74, 240, 192, 0.15);
-  z-index: 100;
-}
-[data-tooltip]:hover::after,
-[data-tooltip]:focus-visible::after {
-  opacity: 1;
-}
-/* For elements positioned on the right side, tooltip appears to the left */
-.hud-top-right [data-tooltip]::after {
-  right: calc(100% + 10px);
-}
-/* For inline/badge elements where right-side tooltip might clip */
-.hud-status-item[data-tooltip]::after {
-  right: auto;
-  left: calc(100% + 10px);
-}
-
-/* Focus-visible ring for keyboard navigation */
-.hud-icon-btn:focus-visible,
-.hud-status-item:focus-visible,
-.atlas-close-btn:focus-visible,
-.vision-close-btn:focus-visible,
-.portal-close-btn:focus-visible,
-.memory-panel-close:focus-visible,
-.memory-panel-pin:focus-visible,
-.session-room-close:focus-visible {
-  outline: 2px solid var(--color-primary);
-  outline-offset: 2px;
-  box-shadow: 0 0 16px rgba(74, 240, 192, 0.4);
-}
-
 .hud-status-item {
   display: flex;
   align-items: center;
@@ -1516,6 +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)
 ═══════════════════════════════════════════════════════ */