fix: [MIGRATION] Preserve legacy the-matrix quality work before Nexus rewrite (closes #685)

Auto-merged by Timmy

.gitignore

@@ -4,3 +4,6 @@ nexus/__pycache__/
 tests/__pycache__/
 mempalace/__pycache__/
 .aider*
+
+# Prevent agents from writing to wrong path (see issue #1145)
+public/nexus/

CLAUDE.md

@@ -42,6 +42,17 @@ Current repo contents are centered on:
 Do not tell contributors to run Vite or edit a nonexistent root frontend on current `main`.
 If browser/UI work is being restored, it must happen through the migration backlog and land back here.
 
+## Canonical File Paths
+
+**Frontend code lives at repo ROOT, NOT in `public/nexus/`:**
+- `app.js` — main Three.js app (GOFAI, 3D world, all frontend logic)
+- `index.html` — main HTML shell
+- `style.css` — styles
+- `server.py` — websocket bridge
+- `gofai_worker.js` — web worker for off-thread reasoning
+
+**DO NOT write to `public/nexus/`** — this path is gitignored. Agents historically wrote here by mistake, creating corrupt duplicates. See issue #1145 and `INVESTIGATION_ISSUE_1145.md`.
+
 ## Hard Rules
 
 1. One canonical 3D repo only: `Timmy_Foundation/the-nexus`
@@ -50,6 +61,7 @@ If browser/UI work is being restored, it must happen through the migration backl
 4. Telemetry and durable truth flow through Hermes harness
 5. OpenClaw remains a sidecar, not the governing authority
 6. Before claiming visual validation, prove the app being viewed actually comes from current `the-nexus`
+7. **NEVER write frontend files to `public/nexus/`** — use repo root paths listed above
 
 ## Validation Rule
 

INVESTIGATION_ISSUE_1145.md

@@ -0,0 +1,72 @@
+# Investigation Report: Missing Source Code — Classical AI Commits Disappearing
+
+**Issue:** #1145
+**Date:** 2026-04-10
+**Investigator:** mimo-v2-pro swarm worker
+
+## Summary
+
+**The classical AI code is NOT missing. It is fully present in root `app.js` (3302 lines).**
+
+The perception of "disappearing code" was caused by agents writing to the WRONG file path (`public/nexus/app.js` instead of root `app.js`), creating corrupt duplicate files that were repeatedly overwritten and eventually deleted.
+
+## Root Cause
+
+**Explanation #1 confirmed: Duplicate agents on different machines overwriting each other's commits.**
+
+Multiple Google AI Agent instances wrote GOFAI implementations to `public/nexus/app.js` — a path that does not correspond to the canonical app structure. These commits kept overwriting each other:
+
+| Commit | Date | What happened |
+|--------|------|---------------|
+| `8943cf5` | 2026-03-30 | Symbolic reasoning engine written to `public/nexus/app.js` (+2280 lines) |
+| `e2df240` | 2026-03-30 | Phase 3 Neuro-Symbolic Bridge — overwrote to 284 lines of HTML (wrong path) |
+| `7f2f23f` | 2026-03-30 | Phase 4 Meta-Reasoning — same destructive overwrite |
+| `bf3b98b` | 2026-03-30 | A* Search — same destructive overwrite |
+| `e88bcb4` | 2026-03-30 | Bug fix identified `public/nexus/` files as corrupt duplicates, **deleted them** |
+
+## Evidence: Code Is Present on Main
+
+All 13 classical AI classes/functions verified present in root `app.js`:
+
+| Class/Function | Line | Status |
+|----------------|------|--------|
+| `SymbolicEngine` | 82 | ✅ Present |
+| `AgentFSM` | 135 | ✅ Present |
+| `KnowledgeGraph` | 160 | ✅ Present |
+| `Blackboard` | 181 | ✅ Present |
+| `SymbolicPlanner` | 210 | ✅ Present |
+| `HTNPlanner` | 295 | ✅ Present |
+| `CaseBasedReasoner` | 343 | ✅ Present |
+| `NeuroSymbolicBridge` | 392 | ✅ Present |
+| `MetaReasoningLayer` | 422 | ✅ Present |
+| `AdaptiveCalibrator` | 460 | ✅ Present |
+| `PSELayer` | 566 | ✅ Present |
+| `setupGOFAI()` | 596 | ✅ Present |
+| `updateGOFAI()` | 622 | ✅ Present |
+| Bitmask fact indexing | 86 | ✅ Present |
+| A* search | 231 | ✅ Present |
+
+These were injected by commit `af7a4c4` (PR #775, merged via `a855d54`) into the correct path.
+
+## What Actually Happened
+
+1. Google AI Agent wrote good GOFAI code to root `app.js` via the correct PR (#775)
+2. A second wave of Google AI Agent instances also wrote to `public/nexus/app.js` (wrong path)
+3. Those `public/nexus/` files kept getting overwritten by subsequent agent commits
+4. Commit `e88bcb4` correctly identified the `public/nexus/` files as corrupt and deleted them
+5. Alexander interpreted the git log as "classical AI code keeps disappearing"
+6. The code was never actually gone — it just lived in root `app.js` the whole time
+
+## Prevention Strategy
+
+1. **Add `public/nexus/` to `.gitignore`** — prevents agents from accidentally writing to the wrong path again
+2. **Add canonical path documentation to CLAUDE.md** — any agent reading this repo will know where frontend code lives
+3. **This report** — serves as the audit trail so this confusion doesn't recur
+
+## Acceptance Criteria
+
+- [x] Git history audited for classical AI commits
+- [x] Found the commits — they exist, code was written to wrong path
+- [x] Root cause identified — duplicate agents writing to `public/nexus/` (wrong path)
+- [x] Prevention strategy implemented — `.gitignore` + `CLAUDE.md` path guard
+- [x] Report filed with findings (this document)

LEGACY_MATRIX_AUDIT.md

@@ -1,132 +1,169 @@
-# Legacy Matrix Audit
+# Legacy Matrix Audit — Migration Table
 
 Purpose:
-Preserve useful work from `/Users/apayne/the-matrix` before the Nexus browser shell is rebuilt.
+Preserve quality work from `/Users/apayne/the-matrix` before the Nexus browser shell is rebuilt.
 
 Canonical rule:
 - `Timmy_Foundation/the-nexus` is the only canonical 3D repo.
 - `/Users/apayne/the-matrix` is legacy source material, not a parallel product.
+- This document is the authoritative migration table for issue #685.
 
-## Verified Legacy Matrix State
+## Verified Legacy State
 
-Local legacy repo:
+Local legacy repo: `/Users/apayne/the-matrix`
-- `/Users/apayne/the-matrix`
 
 Observed facts:
-- Vite browser app exists
+- Vite browser app, vanilla JS + Three.js 0.171.0
-- `npm test` passes with `87 passed, 0 failed`
+- 24 JS modules under `js/`
-- 23 JS modules under `js/`
+- Smoke suite: 87 passed, 0 failed
-- package scripts include `dev`, `build`, `preview`, and `test`
+- Package scripts: dev, build, preview, test
+- PWA manifest + service worker
+- Vite config with code-splitting (Three.js in separate chunk)
+- Quality-tier system for hardware detection
+- WebSocket client with reconnection, heartbeat, mock mode
+- Full avatar FPS movement + PiP camera
+- Sub-world portal system with zone triggers
 
-## Known historical Nexus snapshot
+## Migration Table
 
-Useful in-repo reference point:
+Decision key:
-- `0518a1c3ae3c1d0afeb24dea9772102f5a3d9a66`
+- **CARRY** = transplant concepts and patterns into Nexus vNext
+- **ARCHIVE** = keep as reference, do not directly transplant
+- **DROP** = do not preserve unless re-justified
 
-That snapshot still contains browser-world root files such as:
+### Core Modules
-- `index.html`
-- `app.js`
-- `style.css`
-- `package.json`
-- `tests/`
 
-## Rescue Candidates
+| File | Lines | Capability | Decision | Why for Nexus |
+|------|-------|------------|----------|---------------|
+| `js/main.js` | 180 | App bootstrap, render loop, WebGL context recovery | **CARRY** | Architectural pattern. Shows clean init/teardown lifecycle, context-loss recovery, visibility pause. Nexus needs this loop but should not copy the monolithic wiring. |
+| `js/world.js` | 95 | Scene, camera, renderer, grid, lights | **CARRY** | Foundational. Quality-tier-aware renderer setup, grid floor, lighting. Nexus already has a world but should adopt the tier-aware antialiasing and pixel-ratio capping. |
+| `js/config.js` | 68 | Connection config via URL params + env vars | **ARCHIVE** | Pattern reference only. Nexus config should route through Hermes harness, not Vite env vars. The URL-override pattern (ws, token, mock) is worth remembering. |
+| `js/quality.js` | 90 | Hardware detection, quality tier (low/medium/high) | **CARRY** | Directly useful. DPR capping, core/memory/screen heuristics, WebGL renderer sniffing. Nexus needs this for graceful degradation on Mac/iPad. |
+| `js/storage.js` | 39 | Safe localStorage with in-memory fallback | **CARRY** | Small, robust, sandbox-proof. Nexus should use this or equivalent. Prevents crashes in sandboxed iframes. |
 
-### Carry forward into Nexus vNext
+### Agent System
 
-1. `agent-defs.js`
+| File | Lines | Capability | Decision | Why for Nexus |
-- agent identity definitions
+|------|-------|------------|----------|---------------|
-- useful as seed data/model for visible entities in the world
+| `js/agent-defs.js` | 30 | Agent identity data (id, label, color, role, position) | **CARRY** | Seed data model. Nexus agents should be defined similarly — data-driven, not hardcoded in render logic. Color hex helper is trivial but useful. |
+| `js/agents.js` | 523 | Agent 3D objects, movement, state, connection lines, hot-add/remove | **CARRY** | Core visual system. Shared geometries (perf), movement interpolation, wallet-health stress glow, auto-placement algorithm, connection-line pulse. All valuable. Needs integration with real agent state from Hermes. |
+| `js/behaviors.js` | 413 | Autonomous agent behavior state machine | **ARCHIVE** | Pattern reference. The personality-weighted behavior selection, conversation pairing, and artifact-placement system are well-designed. But Nexus behaviors should be driven by Hermes, not a client-side simulation. Keep the architecture, drop the fake-autonomy. |
+| `js/presence.js` | 139 | Agent presence HUD (online/offline, uptime, state) | **CARRY** | Valuable UX. Live "who's here" panel with uptime tickers and state indicators. Needs real backend state, not mock assumptions. |
 
-2. `agents.js`
+### Visitor & Interaction
-- agent objects, state machine, connection lines
-- useful for visualizing Timmy / subagents / system processes in a world-native way
 
-3. `avatar.js`
+| File | Lines | Capability | Decision | Why for Nexus |
-- visitor embodiment, movement, camera handling
+|------|-------|------------|----------|---------------|
-- strongly aligned with "training ground" and "walk the world" goals
+| `js/visitor.js` | 141 | Visitor enter/leave protocol, chat input | **CARRY** | Session lifecycle. Device detection, visibility-based leave/return, chat input wiring. Directly applicable to Nexus visitor tracking. |
+| `js/avatar.js` | 360 | FPS movement, PiP dual-camera, touch input | **CARRY** | Visitor embodiment. WASD + arrow movement, first/third person swap, PiP canvas, touch joystick, right-click mouse-look. Strong work. Needs tuning for Nexus world bounds. |
+| `js/interaction.js` | 296 | Raycasting, click-to-select agents, info popup | **CARRY** | Essential for any browser world. OrbitControls, pointer/tap detection, agent popup with state/role, TALK button. The popup-anchoring-to-3D-position logic is particularly well done. |
+| `js/zones.js` | 161 | Proximity trigger zones (portal enter/exit, events) | **CARRY** | Spatial event system. Portal traversal, event triggers, once-only zones. Nexus portals (#672) need this exact pattern. |
 
-4. `ui.js`
+### Chat & Communication
-- HUD, chat surfaces, overlays
-- useful if rebuilt against real harness data instead of stale fake state
 
-5. `websocket.js`
+| File | Lines | Capability | Decision | Why for Nexus |
-- browser-side live bridge patterns
+|------|-------|------------|----------|---------------|
-- useful if retethered to Hermes-facing transport
+| `js/bark.js` | 141 | Speech bubble system with typing animation | **CARRY** | Timmy's voice in-world. Typing animation, queue, auto-dismiss, emotion tags, demo bark lines. Strong expressive presence. The demo lines ("The Tower watches. The Tower remembers.") are good seed content. |
+| `js/ui.js` | 285 | Chat panel, agent list, HUD, streaming tokens | **CARRY** | Chat infrastructure. Rolling chat buffer, per-agent localStorage history, streaming token display with cursor animation, HTML escaping. Needs reconnection to Hermes chat instead of WS mock. |
+| `js/transcript.js` | 183 | Conversation transcript logger, export | **ARCHIVE** | Pattern reference. The rolling buffer, structured JSON entries, TXT/JSON download, HUD badge are all solid. But transcript authority should live in Hermes, not browser localStorage. Keep the UX pattern, rebuild storage layer. |
 
-6. `transcript.js`
+### Visual Effects
-- local transcript capture pattern
-- useful if durable truth still routes through Hermes and browser cache remains secondary
 
-7. `ambient.js`
+| File | Lines | Capability | Decision | Why for Nexus |
-- mood / atmosphere system
+|------|-------|------------|----------|---------------|
-- directly supports wizardly presentation without changing system authority
+| `js/effects.js` | 195 | Matrix rain particles + starfield | **CARRY** | Atmospheric foundation. Quality-tier particle counts, frame-skip optimization, adaptive draw-range (FPS-budget recovery), bounding-sphere pre-compute. This is production-grade particle work. |
+| `js/ambient.js` | 212 | Mood-driven atmosphere (lighting, fog, rain, stars) | **CARRY** | Scene mood engine. Smooth eased transitions between mood states (calm, focused, excited, contemplative, stressed), per-mood lighting/fog/rain/star parameters. Directly supports Nexus atmosphere. |
+| `js/satflow.js` | 261 | Lightning payment particle flow | **CARRY** | Economy visualization. Bezier-arc particles, staggered travel, burst-on-arrival, pooling. If Nexus shows any payment/economy flow, this is the pattern. |
 
-8. `satflow.js`
+### Economy & Scene
-- visual economy / payment flow motifs
-- useful if Timmy's economy/agent interactions become a real visible layer
 
-9. `economy.js`
+| File | Lines | Capability | Decision | Why for Nexus |
-- treasury / wallet panel ideas
+|------|-------|------------|----------|---------------|
-- useful if later backed by real sovereign metrics
+| `js/economy.js` | 100 | Wallet/treasury HUD panel | **ARCHIVE** | UI pattern reference. Clean sats formatting, per-agent balance rows, health-colored dots, recent transactions. Worth rebuilding when backed by real sovereign metrics. |
+| `js/scene-objects.js` | 718 | Dynamic 3D object registry, portals, sub-worlds | **CARRY** | Critical. Geometry/material factories, animation system (rotate/bob/pulse/orbit), portal visual (torus ring + glow disc + zone), sub-world load/unload, text sprites, compound groups. This is the most complex and valuable module. Nexus portals (#672) should build on this. |
 
-10. `presence.js`
+### Backend Bridge
-- who-is-here / online-state UI
-- useful for showing human + agent + process presence in the world
 
-11. `interaction.js`
+| File | Lines | Capability | Decision | Why for Nexus |
-- clicking, inspecting, selecting world entities
+|------|-------|------------|----------|---------------|
-- likely needed in any real browser-facing Nexus shell
+| `js/websocket.js` | 598 | WebSocket client, message dispatcher, mock mode | **ARCHIVE** | Pattern reference only. Reconnection with exponential backoff, heartbeat/zombie detection, rich message dispatch (40+ message types), streaming chat support. The architecture is sound but must be reconnected to Hermes transport, not copied wholesale. The message-type catalog is the most valuable reference artifact. |
+| `js/demo.js` | ~300 | Demo autopilot (mock mode simulation) | **DROP** | Fake activity simulation. Deliberately creates the illusion of live data. Do not preserve. If Nexus needs a demo mode, build a clearly-labeled one that doesn't pretend to be real. |
 
-12. `quality.js`
+### Testing & Build
-- hardware-aware quality tiering
-- useful for local-first graceful degradation on Mac hardware
 
-13. `bark.js`
+| File | Lines | Capability | Decision | Why for Nexus |
-- prominent speech / bark system
+|------|-------|------------|----------|---------------|
-- strong fit for Timmy's expressive presence in-world
+| `test/smoke.mjs` | 235 | Automated browser smoke test suite | **CARRY** | Testing discipline. Module inventory check, export verification, HTML structure validation, Vite build test, bundle-size budget, PWA manifest check. Nexus should adopt this pattern (adapted for its own module structure). |
+| `vite.config.js` | 53 | Build config with code splitting, SW generation | **ARCHIVE** | Build tooling reference. manualChunks for Three.js, SW precache generation plugin. Relevant if Nexus re-commits to Vite. |
+| `sw.js` | ~40 | Service worker with precache | **ARCHIVE** | PWA reference. Relevant only if Nexus pursues offline-first PWA. |
+| `manifest.json` | ~20 | PWA manifest | **ARCHIVE** | PWA reference. |
 
-14. `world.js`, `effects.js`, `scene-objects.js`, `zones.js`
+### Server-Side (Python)
-- broad visual foundation work
-- should be mined for patterns, not blindly transplanted
 
-15. `test/smoke.mjs`
+| File | Lines | Capability | Decision | Why for Nexus |
-- browser smoke discipline
+|------|-------|------------|----------|---------------|
-- should inform rebuilt validation in canonical Nexus repo
+| `server/bridge.py` | ~900 | WebSocket bridge server | **ARCHIVE** | Reference. Hermes replaces this role. Keep for protocol schema reference. |
+| `server/gateway.py` | ~400 | HTTP gateway | **ARCHIVE** | Reference. |
+| `server/ollama_client.py` | ~280 | Ollama integration | **ARCHIVE** | Reference. Relevant if Nexus needs local model calls. |
+| `server/research.py` | ~450 | Research pipeline | **ARCHIVE** | Reference. |
+| `server/webhooks.py` | ~350 | Webhook handler | **ARCHIVE** | Reference. |
+| `server/test_*.py` | ~5 files | Server test suites | **ARCHIVE** | Testing patterns worth studying. |
 
-### Archive as reference, not direct carry-forward
+## Summary by Decision
 
-- demo/autopilot assumptions that pretend fake backend activity is real
+### CARRY FORWARD (17 modules)
-- any websocket schema that no longer matches Hermes truth
+These modules contain patterns, algorithms, or entire implementations that should move into the Nexus browser shell:
-- Vite-specific plumbing that is only useful if we consciously recommit to Vite
 
-### Deliberately drop unless re-justified
+- `quality.js` — hardware detection
+- `storage.js` — safe persistence
+- `world.js` — scene foundation
+- `agent-defs.js` — agent data model
+- `agents.js` — agent visualization + movement
+- `presence.js` — online presence HUD
+- `visitor.js` — session lifecycle
+- `avatar.js` — FPS embodiment
+- `interaction.js` — click/select/raycast
+- `zones.js` — spatial triggers
+- `bark.js` — speech bubbles
+- `ui.js` — chat/HUD
+- `effects.js` — particle effects
+- `ambient.js` — mood atmosphere
+- `satflow.js` — payment flow particles
+- `scene-objects.js` — dynamic objects + portals
+- `test/smoke.mjs` — smoke test discipline
 
-- anything that presents mock data as if it were live
+### ARCHIVE AS REFERENCE (9 modules/files)
-- anything that duplicates a better Hermes-native telemetry path
+Keep for patterns, protocol schemas, and architectural reference. Do not directly transplant:
-- anything that turns the browser into the system of record
+
+- `config.js` — config pattern (use Hermes instead)
+- `behaviors.js` — behavior architecture (use Hermes-driven state)
+- `transcript.js` — transcript UX (use Hermes storage)
+- `economy.js` — economy UI pattern (use real metrics)
+- `websocket.js` — message protocol catalog + reconnection patterns
+- `vite.config.js` — build tooling
+- `sw.js`, `manifest.json` — PWA reference
+- `server/*.py` — server protocol schemas
+
+### DELIBERATELY DROP (2)
+Do not preserve unless re-justified:
+
+- `demo.js` — fake activity simulation; creates false impression of live system
+- `main.js` monolithic wiring — the init pattern carries, the specific module wiring does not
 
 ## Concern Separation for Nexus vNext
 
-When rebuilding inside `the-nexus`, keep concerns separated:
+When rebuilding inside `the-nexus`, keep these concerns in separate modules:
 
-1. World shell / rendering
+1. **World shell** — scene, camera, renderer, grid, lights, fog
-- scene, camera, movement, atmosphere
+2. **Effects layer** — rain, stars, ambient mood transitions
-
+3. **Agent visualization** — 3D objects, labels, connection lines, movement
-2. Presence and embodiment
+4. **Visitor embodiment** — avatar, FPS controls, PiP camera
-- avatar, agent placement, selection, bark/chat surfaces
+5. **Interaction layer** — raycasting, selection, zones, portal traversal
-
+6. **Communication surface** — bark, chat panel, streaming tokens
-3. Harness bridge
+7. **Presence & HUD** — who's-online, economy panel, transcript controls
-- websocket / API bridge from Hermes truth into browser state
+8. **Harness bridge** — WebSocket/API transport to Hermes (NOT a copy of websocket.js)
-
+9. **Quality & config** — hardware detection, runtime configuration
-4. Visualization panels
+10. **Smoke tests** — automated validation
-- metrics, presence, economy, portal states, transcripts
-
-5. Validation
-- smoke tests, screenshot proof, provenance checks
-
-6. Game portal layer
-- Morrowind / portal-specific interaction surfaces
 
 Do not collapse all of this into one giant app file again.
 Do not let visual shell code become telemetry authority.

app.js

@@ -4,6 +4,7 @@ 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';
+import { SessionRooms } from './nexus/components/session-rooms.js';
 
 // ═══════════════════════════════════════════
 // NEXUS v1.1 — Portal System Update
@@ -705,6 +706,7 @@ async function init() {
   createWorkshopTerminal();
   createAshStorm();
   SpatialMemory.init(scene);
+  SessionRooms.init(scene, camera, null);
   updateLoad(90);
 
   loadSession();
@@ -1883,7 +1885,7 @@ function setupControls() {
       orbitState.lastX = e.clientX;
       orbitState.lastY = e.clientY;
       
-      // Raycasting for portals
+      // Raycasting for portals and memory crystals
       if (!portalOverlayActive) {
         const mouse = new THREE.Vector2(
           (e.clientX / window.innerWidth) * 2 - 1,
@@ -1891,12 +1893,43 @@ function setupControls() {
         );
         const raycaster = new THREE.Raycaster();
         raycaster.setFromCamera(mouse, camera);
-        const intersects = raycaster.intersectObjects(portals.map(p => p.ring));
+
-        if (intersects.length > 0) {
+        // Priority 1: Portals
-          const clickedRing = intersects[0].object;
+        const portalHits = raycaster.intersectObjects(portals.map(p => p.ring));
+        if (portalHits.length > 0) {
+          const clickedRing = portalHits[0].object;
           const portal = portals.find(p => p.ring === clickedRing);
-          if (portal) activatePortal(portal);
+          if (portal) { activatePortal(portal); return; }
         }
+
+        // Priority 2: Memory crystals (Mnemosyne)
+        const crystalMeshes = SpatialMemory.getCrystalMeshes();
+        if (crystalMeshes.length > 0) {
+          const crystalHits = raycaster.intersectObjects(crystalMeshes, false);
+          if (crystalHits.length > 0) {
+            const hitMesh = crystalHits[0].object;
+            const memInfo = SpatialMemory.getMemoryFromMesh(hitMesh);
+            if (memInfo) {
+              SpatialMemory.highlightMemory(memInfo.data.id);
+              showMemoryPanel(memInfo, e.clientX, e.clientY);
+              return;
+            }
+          }
+        }
+
+        // Priority 3: Session rooms (Mnemosyne #1171)
+        const roomMeshes = SessionRooms.getClickableMeshes();
+        if (roomMeshes.length > 0) {
+          const roomHits = raycaster.intersectObjects(roomMeshes, false);
+          if (roomHits.length > 0) {
+            const session = SessionRooms.handleRoomClick(roomHits[0].object);
+            if (session) { _showSessionRoomPanel(session); return; }
+          }
+        }
+
+        // Clicked empty space — dismiss panel
+        dismissMemoryPanel();
+        _dismissSessionRoomPanel();
       }
     }
   });
@@ -2551,6 +2584,226 @@ function focusPortal(portal) {
 let lastThoughtTime = 0;
 let pulseTimer = 0;
 
+
+// ═══════════════════════════════════════════
+//  MNEMOSYNE — MEMORY CRYSTAL INSPECTION
+// ═══════════════════════════════════════════
+
+// ── pin state for memory panel ──
+let _memPanelPinned = false;
+
+/** Convert a packed hex color integer to "r,g,b" string for CSS rgba(). */
+function _hexToRgb(hex) {
+  return ((hex >> 16) & 255) + ',' + ((hex >> 8) & 255) + ',' + (hex & 255);
+}
+
+/**
+ * Position the panel near the screen click coordinates, keeping it on-screen.
+ */
+function _positionPanel(panel, clickX, clickY) {
+  const W = window.innerWidth;
+  const H = window.innerHeight;
+  const panelW = 356; // matches CSS width + padding
+  const panelH = 420; // generous estimate
+  const margin = 12;
+
+  let left = clickX + 24;
+  if (left + panelW > W - margin) left = clickX - panelW - 24;
+  left = Math.max(margin, Math.min(W - panelW - margin, left));
+
+  let top = clickY - 80;
+  top = Math.max(margin, Math.min(H - panelH - margin, top));
+
+  panel.style.right = 'auto';
+  panel.style.top = top + 'px';
+  panel.style.left = left + 'px';
+  panel.style.transform = 'none';
+}
+
+/**
+ * Navigate to (highlight + show panel for) a memory crystal by id.
+ */
+function _navigateToMemory(memId) {
+  SpatialMemory.highlightMemory(memId);
+  addChatMessage('system', `Focus: ${memId.replace(/_/g, ' ')}`);
+  const meshes = SpatialMemory.getCrystalMeshes();
+  for (const mesh of meshes) {
+    if (mesh.userData && mesh.userData.memId === memId) {
+      const memInfo = SpatialMemory.getMemoryFromMesh(mesh);
+      if (memInfo) { showMemoryPanel(memInfo); break; }
+    }
+  }
+}
+
+/**
+ * Show the holographic detail panel for a clicked crystal.
+ * @param {object} memInfo  — { data, region } from SpatialMemory.getMemoryFromMesh()
+ * @param {number} [clickX] — screen X of the click (for panel positioning)
+ * @param {number} [clickY] — screen Y of the click
+ */
+function showMemoryPanel(memInfo, clickX, clickY) {
+  const panel = document.getElementById('memory-panel');
+  if (!panel) return;
+
+  const { data, region } = memInfo;
+  const regionDef = SpatialMemory.REGIONS[region] || SpatialMemory.REGIONS.working;
+  const colorHex = regionDef.color.toString(16).padStart(6, '0');
+  const colorRgb = _hexToRgb(regionDef.color);
+
+  // Header — region dot + label
+  document.getElementById('memory-panel-region').textContent = regionDef.label;
+  document.getElementById('memory-panel-region-dot').style.background = '#' + colorHex;
+
+  // Category badge
+  const badge = document.getElementById('memory-panel-category-badge');
+  if (badge) {
+    badge.textContent = (data.category || region || 'memory').toUpperCase();
+    badge.style.background = 'rgba(' + colorRgb + ',0.16)';
+    badge.style.color = '#' + colorHex;
+    badge.style.borderColor = 'rgba(' + colorRgb + ',0.4)';
+  }
+
+  // Entity name (humanised id)
+  const entityEl = document.getElementById('memory-panel-entity-name');
+  if (entityEl) entityEl.textContent = (data.id || '\u2014').replace(/_/g, ' ');
+
+  // Fact content
+  document.getElementById('memory-panel-content').textContent = data.content || '(empty)';
+
+  // Trust score bar
+  const strength = data.strength != null ? data.strength : 0.7;
+  const trustFill = document.getElementById('memory-panel-trust-fill');
+  const trustVal  = document.getElementById('memory-panel-trust-value');
+  if (trustFill) {
+    trustFill.style.width = (strength * 100).toFixed(0) + '%';
+    trustFill.style.background = '#' + colorHex;
+  }
+  if (trustVal) trustVal.textContent = (strength * 100).toFixed(0) + '%';
+
+  // Meta rows
+  document.getElementById('memory-panel-id').textContent = data.id || '\u2014';
+  document.getElementById('memory-panel-source').textContent = data.source || 'unknown';
+  document.getElementById('memory-panel-time').textContent = data.timestamp ? new Date(data.timestamp).toLocaleString() : '\u2014';
+
+  // Related entities — clickable links
+  const connEl = document.getElementById('memory-panel-connections');
+  connEl.innerHTML = '';
+  if (data.connections && data.connections.length > 0) {
+    data.connections.forEach(cid => {
+      const btn = document.createElement('button');
+      btn.className = 'memory-conn-tag memory-conn-link';
+      btn.textContent = cid.replace(/_/g, ' ');
+      btn.title = 'Go to: ' + cid;
+      btn.addEventListener('click', (ev) => { ev.stopPropagation(); _navigateToMemory(cid); });
+      connEl.appendChild(btn);
+    });
+  } else {
+    connEl.innerHTML = '<span style="color:var(--color-text-muted)">None</span>';
+  }
+
+  // Pin button — reset on fresh open
+  _memPanelPinned = false;
+  const pinBtn = document.getElementById('memory-panel-pin');
+  if (pinBtn) {
+    pinBtn.classList.remove('pinned');
+    pinBtn.title = 'Pin panel';
+    pinBtn.onclick = () => {
+      _memPanelPinned = !_memPanelPinned;
+      pinBtn.classList.toggle('pinned', _memPanelPinned);
+      pinBtn.title = _memPanelPinned ? 'Unpin panel' : 'Pin panel';
+    };
+  }
+
+  // Positioning — near click if coords provided
+  if (clickX != null && clickY != null) {
+    _positionPanel(panel, clickX, clickY);
+  }
+
+  // Fade in
+  panel.classList.remove('memory-panel-fade-out');
+  panel.style.display = 'flex';
+}
+
+/**
+ * Dismiss the panel (respects pin). Called on empty-space click.
+ */
+function dismissMemoryPanel() {
+  if (_memPanelPinned) return;
+  _dismissMemoryPanelForce();
+}
+
+/**
+ * Force-dismiss the panel regardless of pin state. Used by the close button.
+ */
+function _dismissMemoryPanelForce() {
+  _memPanelPinned = false;
+  SpatialMemory.clearHighlight();
+  const panel = document.getElementById('memory-panel');
+  if (!panel || panel.style.display === 'none') return;
+  panel.classList.add('memory-panel-fade-out');
+  setTimeout(() => {
+    panel.style.display = 'none';
+    panel.classList.remove('memory-panel-fade-out');
+  }, 200);
+}
+
+/**
+ * Show the session room HUD panel when a chamber is entered.
+ * @param {object} session — { id, timestamp, facts[] }
+ */
+function _showSessionRoomPanel(session) {
+  const panel = document.getElementById('session-room-panel');
+  if (!panel) return;
+
+  const dt = session.timestamp ? new Date(session.timestamp) : new Date();
+  const tsEl = document.getElementById('session-room-timestamp');
+  if (tsEl) tsEl.textContent = isNaN(dt.getTime()) ? session.id : dt.toLocaleString();
+
+  const countEl = document.getElementById('session-room-fact-count');
+  const facts = session.facts || [];
+  if (countEl) countEl.textContent = facts.length + (facts.length === 1 ? ' fact' : ' facts') + ' in this chamber';
+
+  const listEl = document.getElementById('session-room-facts');
+  if (listEl) {
+    listEl.innerHTML = '';
+    facts.slice(0, 8).forEach(f => {
+      const item = document.createElement('div');
+      item.className = 'session-room-fact-item';
+      item.textContent = f.content || f.id || '(unknown)';
+      item.title = f.content || '';
+      listEl.appendChild(item);
+    });
+    if (facts.length > 8) {
+      const more = document.createElement('div');
+      more.className = 'session-room-fact-item';
+      more.style.color = 'rgba(200,180,255,0.4)';
+      more.textContent = '\u2026 ' + (facts.length - 8) + ' more';
+      listEl.appendChild(more);
+    }
+  }
+
+  // Close button
+  const closeBtn = document.getElementById('session-room-close');
+  if (closeBtn) closeBtn.onclick = () => _dismissSessionRoomPanel();
+
+  panel.classList.remove('session-panel-fade-out');
+  panel.style.display = 'block';
+}
+
+/**
+ * Dismiss the session room panel.
+ */
+function _dismissSessionRoomPanel() {
+  const panel = document.getElementById('session-room-panel');
+  if (!panel || panel.style.display === 'none') return;
+  panel.classList.add('session-panel-fade-out');
+  setTimeout(() => {
+    panel.style.display = 'none';
+    panel.classList.remove('session-panel-fade-out');
+  }, 200);
+}
+
+
 function gameLoop() {
   requestAnimationFrame(gameLoop);
   const delta = Math.min(clock.getDelta(), 0.1);
@@ -2581,6 +2834,9 @@ function gameLoop() {
     animateMemoryOrbs(delta);
   }
 
+  // Project Mnemosyne - Session Rooms (#1171)
+  SessionRooms.update(delta);
+
 
   const mode = NAV_MODES[navModeIdx];
   const chatActive = document.activeElement === document.getElementById('chat-input');
@@ -3104,9 +3360,52 @@ init().then(() => {
     { 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'] },
+    // MemPalace category zone demos — issue #1168
+    { id: 'mem_pref_dark_mode', content: 'User prefers dark mode and monospace fonts', category: 'user_pref', strength: 0.9, connections: [] },
+    { id: 'mem_pref_verbose_logs', content: 'User prefers verbose logging during debug sessions', category: 'user_pref', strength: 0.7, connections: [] },
+    { id: 'mem_proj_nexus_goal', content: 'The Nexus goal: local-first 3D training ground for Timmy', category: 'project', strength: 0.95, connections: ['mem_proj_mnemosyne'] },
+    { id: 'mem_proj_mnemosyne', content: 'Project Mnemosyne: holographic living archive of facts', category: 'project', strength: 0.85, connections: ['mem_proj_nexus_goal'] },
+    { id: 'mem_tool_three_js', content: 'Three.js — 3D rendering library used for the Nexus world', category: 'tool', strength: 0.8, connections: [] },
+    { id: 'mem_tool_gitea', content: 'Gitea API at forge.alexanderwhitestone.com for issue tracking', category: 'tool', strength: 0.75, connections: [] },
+    { id: 'mem_gen_websocket', content: 'WebSocket bridge (server.py) connects Timmy cognition to the browser', category: 'general', strength: 0.7, connections: [] },
+    { id: 'mem_gen_hermes', content: 'Hermes harness: telemetry and durable truth pipeline', category: 'general', strength: 0.65, connections: [] },
   ];
   demoMemories.forEach(m => SpatialMemory.placeMemory(m));
 
+  // Gravity well clustering — attract related crystals, bake positions (issue #1175)
+  SpatialMemory.runGravityLayout();
+
+  // Project Mnemosyne — seed demo session rooms (#1171)
+  // Sessions group facts by conversation/work session with a timestamp.
+  const demoSessions = [
+    {
+      id: 'session_2026_03_01',
+      timestamp: '2026-03-01T10:00:00.000Z',
+      facts: [
+        { id: 'mem_nexus_birth',     content: 'The Nexus came online — first render of the 3D world',    category: 'knowledge',    strength: 0.95 },
+        { id: 'mem_mnemosyne_start', content: 'Project Mnemosyne began — the living archive awakens',    category: 'projects',     strength: 0.9 },
+      ]
+    },
+    {
+      id: 'session_2026_03_15',
+      timestamp: '2026-03-15T14:30:00.000Z',
+      facts: [
+        { id: 'mem_first_portal',    content: 'First portal deployed — connection to external service',  category: 'engineering',  strength: 0.85 },
+        { id: 'mem_hermes_chat',     content: 'First conversation through the Hermes gateway',           category: 'social',       strength: 0.7 },
+        { id: 'mem_spatial_schema',  content: 'Spatial Memory Schema defined — memories gain homes',     category: 'engineering',  strength: 0.8 },
+      ]
+    },
+    {
+      id: 'session_2026_04_10',
+      timestamp: '2026-04-10T09:00:00.000Z',
+      facts: [
+        { id: 'mem_session_rooms',   content: 'Session rooms introduced — holographic chambers per session', category: 'projects', strength: 0.88 },
+        { id: 'mem_gravity_wells',   content: 'Gravity-well clustering bakes crystal positions on load',  category: 'engineering',  strength: 0.75 },
+      ]
+    }
+  ];
+  SessionRooms.updateSessions(demoSessions);
+
   fetchGiteaData();
   setInterval(fetchGiteaData, 30000);
   runWeeklyAudit();

index.html

@@ -207,6 +207,50 @@
     </div>
   </div>
 
+
+  <!-- Memory Crystal Inspection Panel (Mnemosyne) -->
+  <div id="memory-panel" class="memory-panel" style="display:none;">
+    <div class="memory-panel-content">
+      <div class="memory-panel-header">
+        <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" 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>
+      <div class="memory-trust-row">
+        <span class="memory-meta-label">Trust</span>
+        <div class="memory-trust-bar">
+          <div class="memory-trust-fill" id="memory-panel-trust-fill"></div>
+        </div>
+        <span class="memory-trust-value" id="memory-panel-trust-value">—</span>
+      </div>
+      <div class="memory-panel-meta">
+        <div class="memory-meta-row"><span class="memory-meta-label">ID</span><span id="memory-panel-id">\u2014</span></div>
+        <div class="memory-meta-row"><span class="memory-meta-label">Source</span><span id="memory-panel-source">\u2014</span></div>
+        <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>
+  </div>
+
+  <!-- Session Room HUD Panel (Mnemosyne #1171) -->
+  <div id="session-room-panel" class="session-room-panel" style="display:none;">
+    <div class="session-room-panel-content">
+      <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" 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>
+      <div class="session-room-facts" id="session-room-facts"></div>
+      <div class="session-room-hint">Flying into chamber&hellip;</div>
+    </div>
+  </div>
+
   <!-- Portal Atlas Overlay -->
   <div id="atlas-overlay" class="atlas-overlay" style="display:none;">
     <div class="atlas-content">

nexus/components/session-rooms.js

@@ -0,0 +1,413 @@
+// ═══════════════════════════════════════════════════════
+//  PROJECT MNEMOSYNE — SESSION ROOMS (Issue #1171)
+// ═══════════════════════════════════════════════════════
+//
+// Groups memories by session into holographic chambers.
+// Each session becomes a wireframe cube floating in space.
+// Rooms are arranged chronologically along a spiral.
+// Click a room to fly inside; distant rooms LOD to a point.
+//
+// Usage from app.js:
+//   SessionRooms.init(scene, camera, controls);
+//   SessionRooms.updateSessions(sessions);   // [{id, timestamp, facts[]}]
+//   SessionRooms.update(delta);              // call each frame
+//   SessionRooms.getClickableMeshes();       // for raycasting
+//   SessionRooms.handleRoomClick(mesh);      // trigger fly-in
+// ═══════════════════════════════════════════════════════
+
+const SessionRooms = (() => {
+
+  // ─── CONSTANTS ───────────────────────────────────────
+  const MAX_ROOMS        = 20;
+  const ROOM_SIZE        = 9;          // wireframe cube edge length
+  const ROOM_HALF        = ROOM_SIZE / 2;
+  const LOD_THRESHOLD    = 55;         // distance: full → point
+  const LOD_HYSTERESIS   = 5;          // buffer to avoid flicker
+  const SPIRAL_BASE_R    = 20;         // spiral inner radius
+  const SPIRAL_R_STEP    = 5;          // radius growth per room
+  const SPIRAL_ANGLE_INC = 2.399;      // golden angle (radians)
+  const SPIRAL_Y_STEP    = 1.5;        // vertical rise per room
+  const FLY_DURATION     = 1.5;        // seconds for fly-in tween
+  const FLY_TARGET_DEPTH = ROOM_HALF - 1.5; // how deep inside to stop
+
+  const ROOM_COLOR       = 0x7b5cff;   // violet — mnemosyne accent
+  const POINT_COLOR      = 0x9b7cff;
+  const LABEL_COLOR      = '#c8b4ff';
+  const STORAGE_KEY      = 'mnemosyne_sessions_v1';
+
+  // ─── STATE ────────────────────────────────────────────
+  let _scene    = null;
+  let _camera   = null;
+  let _controls = null;
+
+  let _rooms        = [];   // array of room objects
+  let _sessionIndex = {};   // id → room object
+
+  // Fly-in tween state
+  let _flyActive   = false;
+  let _flyElapsed  = 0;
+  let _flyFrom     = null;
+  let _flyTo       = null;
+  let _flyLookFrom = null;
+  let _flyLookTo   = null;
+  let _flyActiveRoom = null;
+
+  // ─── SPIRAL POSITION ──────────────────────────────────
+  function _spiralPos(index) {
+    const angle = index * SPIRAL_ANGLE_INC;
+    const r     = SPIRAL_BASE_R + index * SPIRAL_R_STEP;
+    const y     = index * SPIRAL_Y_STEP;
+    return new THREE.Vector3(
+      Math.cos(angle) * r,
+      y,
+      Math.sin(angle) * r
+    );
+  }
+
+  // ─── CREATE ROOM ──────────────────────────────────────
+  function _createRoom(session, index) {
+    const pos = _spiralPos(index);
+    const group = new THREE.Group();
+    group.position.copy(pos);
+
+    // Wireframe cube
+    const boxGeo   = new THREE.BoxGeometry(ROOM_SIZE, ROOM_SIZE, ROOM_SIZE);
+    const edgesGeo = new THREE.EdgesGeometry(boxGeo);
+    const edgesMat = new THREE.LineBasicMaterial({
+      color: ROOM_COLOR,
+      transparent: true,
+      opacity: 0.55
+    });
+    const wireframe = new THREE.LineSegments(edgesGeo, edgesMat);
+    wireframe.userData = { type: 'session_room_wireframe', sessionId: session.id };
+    group.add(wireframe);
+
+    // Collision mesh (invisible, for raycasting)
+    const hitGeo = new THREE.BoxGeometry(ROOM_SIZE, ROOM_SIZE, ROOM_SIZE);
+    const hitMat = new THREE.MeshBasicMaterial({
+      visible: false,
+      transparent: true,
+      opacity: 0,
+      side: THREE.FrontSide
+    });
+    const hitMesh = new THREE.Mesh(hitGeo, hitMat);
+    hitMesh.userData = { type: 'session_room', sessionId: session.id, roomIndex: index };
+    group.add(hitMesh);
+
+    // LOD point (small sphere shown at distance)
+    const pointGeo = new THREE.SphereGeometry(0.5, 6, 4);
+    const pointMat = new THREE.MeshBasicMaterial({
+      color: POINT_COLOR,
+      transparent: true,
+      opacity: 0.7
+    });
+    const pointMesh = new THREE.Mesh(pointGeo, pointMat);
+    pointMesh.userData = { type: 'session_room_point', sessionId: session.id };
+    pointMesh.visible = false;  // starts hidden; shown only at LOD distance
+    group.add(pointMesh);
+
+    // Timestamp billboard sprite
+    const sprite = _makeTimestampSprite(session.timestamp, session.facts.length);
+    sprite.position.set(0, ROOM_HALF + 1.2, 0);
+    group.add(sprite);
+
+    // Inner ambient glow
+    const glow = new THREE.PointLight(ROOM_COLOR, 0.4, ROOM_SIZE * 1.2);
+    group.add(glow);
+
+    _scene.add(group);
+
+    const room = {
+      session,
+      group,
+      wireframe,
+      hitMesh,
+      pointMesh,
+      sprite,
+      glow,
+      pos: pos.clone(),
+      index,
+      lodActive: false,
+      pulsePhase: Math.random() * Math.PI * 2
+    };
+
+    _rooms.push(room);
+    _sessionIndex[session.id] = room;
+
+    console.info('[SessionRooms] Created room for session', session.id, 'at index', index);
+    return room;
+  }
+
+  // ─── TIMESTAMP SPRITE ────────────────────────────────
+  function _makeTimestampSprite(isoTimestamp, factCount) {
+    const canvas  = document.createElement('canvas');
+    canvas.width  = 320;
+    canvas.height = 72;
+    const ctx = canvas.getContext('2d');
+
+    // Background pill
+    ctx.clearRect(0, 0, 320, 72);
+    ctx.fillStyle = 'rgba(20, 10, 40, 0.82)';
+    _roundRect(ctx, 4, 4, 312, 64, 14);
+    ctx.fill();
+
+    // Border
+    ctx.strokeStyle = 'rgba(123, 92, 255, 0.6)';
+    ctx.lineWidth = 1.5;
+    _roundRect(ctx, 4, 4, 312, 64, 14);
+    ctx.stroke();
+
+    // Timestamp text
+    const dt = isoTimestamp ? new Date(isoTimestamp) : new Date();
+    const label = _formatDate(dt);
+    ctx.fillStyle = LABEL_COLOR;
+    ctx.font = 'bold 15px monospace';
+    ctx.textAlign = 'center';
+    ctx.fillText(label, 160, 30);
+
+    // Fact count
+    ctx.fillStyle = 'rgba(200, 180, 255, 0.65)';
+    ctx.font = '12px monospace';
+    ctx.fillText(factCount + (factCount === 1 ? ' fact' : ' facts'), 160, 52);
+
+    const tex    = new THREE.CanvasTexture(canvas);
+    const mat    = new THREE.SpriteMaterial({ map: tex, transparent: true, opacity: 0.88 });
+    const sprite = new THREE.Sprite(mat);
+    sprite.scale.set(5, 1.1, 1);
+    sprite.userData = { type: 'session_room_label' };
+    return sprite;
+  }
+
+  // ─── HELPERS ──────────────────────────────────────────
+  function _roundRect(ctx, x, y, w, h, r) {
+    ctx.beginPath();
+    ctx.moveTo(x + r, y);
+    ctx.lineTo(x + w - r, y);
+    ctx.quadraticCurveTo(x + w, y, x + w, y + r);
+    ctx.lineTo(x + w, y + h - r);
+    ctx.quadraticCurveTo(x + w, y + h, x + w - r, y + h);
+    ctx.lineTo(x + r, y + h);
+    ctx.quadraticCurveTo(x, y + h, x, y + h - r);
+    ctx.lineTo(x, y + r);
+    ctx.quadraticCurveTo(x, y, x + r, y);
+    ctx.closePath();
+  }
+
+  function _formatDate(dt) {
+    if (isNaN(dt.getTime())) return 'Unknown session';
+    const pad = n => String(n).padStart(2, '0');
+    return `${dt.getFullYear()}-${pad(dt.getMonth() + 1)}-${pad(dt.getDate())}  ${pad(dt.getHours())}:${pad(dt.getMinutes())}`;
+  }
+
+  // ─── DISPOSE ROOM ────────────────────────────────────
+  function _disposeRoom(room) {
+    room.wireframe.geometry.dispose();
+    room.wireframe.material.dispose();
+    room.hitMesh.geometry.dispose();
+    room.hitMesh.material.dispose();
+    room.pointMesh.geometry.dispose();
+    room.pointMesh.material.dispose();
+    if (room.sprite.material.map) room.sprite.material.map.dispose();
+    room.sprite.material.dispose();
+    if (room.group.parent) room.group.parent.remove(room.group);
+    delete _sessionIndex[room.session.id];
+  }
+
+  // ─── PUBLIC: UPDATE SESSIONS ─────────────────────────
+  // sessions: [{id, timestamp, facts:[{id,content,category,strength,...}]}]
+  // Sorted chronologically oldest→newest; max MAX_ROOMS shown.
+  function updateSessions(sessions) {
+    if (!_scene) return;
+
+    const sorted = [...sessions]
+      .sort((a, b) => new Date(a.timestamp) - new Date(b.timestamp))
+      .slice(-MAX_ROOMS);  // keep most recent MAX_ROOMS
+
+    // Remove rooms no longer present
+    const incoming = new Set(sorted.map(s => s.id));
+    for (let i = _rooms.length - 1; i >= 0; i--) {
+      const room = _rooms[i];
+      if (!incoming.has(room.session.id)) {
+        _disposeRoom(room);
+        _rooms.splice(i, 1);
+      }
+    }
+
+    // Add / update
+    sorted.forEach((session, idx) => {
+      if (_sessionIndex[session.id]) {
+        // Update position if index changed
+        const room = _sessionIndex[session.id];
+        if (room.index !== idx) {
+          room.index = idx;
+          const newPos = _spiralPos(idx);
+          room.group.position.copy(newPos);
+          room.pos.copy(newPos);
+        }
+      } else {
+        _createRoom(session, idx);
+      }
+    });
+
+    saveToStorage(sorted);
+    console.info('[SessionRooms] Updated:', _rooms.length, 'session rooms');
+  }
+
+  // ─── PUBLIC: INIT ─────────────────────────────────────
+  function init(scene, camera, controls) {
+    _scene    = scene;
+    _camera   = camera;
+    _controls = controls;
+    console.info('[SessionRooms] Initialized');
+
+    // Restore persisted sessions
+    const saved = loadFromStorage();
+    if (saved && saved.length > 0) {
+      updateSessions(saved);
+    }
+  }
+
+  // ─── PUBLIC: UPDATE (per-frame) ───────────────────────
+  function update(delta) {
+    if (!_scene || !_camera) return;
+
+    const camPos = _camera.position;
+
+    _rooms.forEach(room => {
+      const dist = camPos.distanceTo(room.pos);
+
+      // LOD toggle
+      const threshold = room.lodActive
+        ? LOD_THRESHOLD + LOD_HYSTERESIS   // must come closer to exit LOD
+        : LOD_THRESHOLD;
+
+      if (dist > threshold && !room.lodActive) {
+        room.lodActive = true;
+        room.wireframe.visible = false;
+        room.sprite.visible    = false;
+        room.pointMesh.visible = true;
+      } else if (dist <= threshold && room.lodActive) {
+        room.lodActive = false;
+        room.wireframe.visible = true;
+        room.sprite.visible    = true;
+        room.pointMesh.visible = false;
+      }
+
+      // Pulse wireframe opacity
+      room.pulsePhase += delta * 0.6;
+      if (!room.lodActive) {
+        room.wireframe.material.opacity = 0.3 + Math.sin(room.pulsePhase) * 0.2;
+        room.glow.intensity = 0.3 + Math.sin(room.pulsePhase * 1.4) * 0.15;
+      }
+
+      // Slowly rotate each room
+      room.group.rotation.y += delta * 0.04;
+    });
+
+    // Fly-in tween
+    if (_flyActive) {
+      _flyElapsed += delta;
+      const t = Math.min(_flyElapsed / FLY_DURATION, 1);
+      const ease = _easeInOut(t);
+
+      _camera.position.lerpVectors(_flyFrom, _flyTo, ease);
+
+      // Interpolate lookAt
+      const lookNow = new THREE.Vector3().lerpVectors(_flyLookFrom, _flyLookTo, ease);
+      _camera.lookAt(lookNow);
+      if (_controls && _controls.target) _controls.target.copy(lookNow);
+
+      if (t >= 1) {
+        _flyActive = false;
+        if (_controls && typeof _controls.update === 'function') _controls.update();
+        console.info('[SessionRooms] Fly-in complete for session', _flyActiveRoom && _flyActiveRoom.session.id);
+        _flyActiveRoom = null;
+      }
+    }
+  }
+
+  // ─── EASING ───────────────────────────────────────────
+  function _easeInOut(t) {
+    return t < 0.5 ? 2 * t * t : -1 + (4 - 2 * t) * t;
+  }
+
+  // ─── PUBLIC: GET CLICKABLE MESHES ─────────────────────
+  function getClickableMeshes() {
+    return _rooms.map(r => r.hitMesh);
+  }
+
+  // ─── PUBLIC: HANDLE ROOM CLICK ────────────────────────
+  function handleRoomClick(mesh) {
+    const { sessionId } = mesh.userData;
+    const room = _sessionIndex[sessionId];
+    if (!room || !_camera) return null;
+
+    // Fly into the room from the front face
+    _flyActive   = true;
+    _flyElapsed  = 0;
+    _flyActiveRoom = room;
+
+    _flyFrom = _camera.position.clone();
+
+    // Target: step inside the room toward its center
+    const dir = room.pos.clone().sub(_camera.position).normalize();
+    _flyTo = room.pos.clone().add(dir.multiplyScalar(FLY_TARGET_DEPTH));
+
+    _flyLookFrom = _controls && _controls.target
+      ? _controls.target.clone()
+      : _camera.position.clone().add(_camera.getWorldDirection(new THREE.Vector3()));
+    _flyLookTo = room.pos.clone();
+
+    console.info('[SessionRooms] Flying into session room:', sessionId);
+    return room.session;
+  }
+
+  // ─── PERSISTENCE ──────────────────────────────────────
+  function saveToStorage(sessions) {
+    if (typeof localStorage === 'undefined') return;
+    try {
+      localStorage.setItem(STORAGE_KEY, JSON.stringify({ v: 1, sessions }));
+    } catch (e) {
+      console.warn('[SessionRooms] Failed to save to localStorage:', e);
+    }
+  }
+
+  function loadFromStorage() {
+    if (typeof localStorage === 'undefined') return null;
+    try {
+      const raw = localStorage.getItem(STORAGE_KEY);
+      if (!raw) return null;
+      const parsed = JSON.parse(raw);
+      if (!parsed || parsed.v !== 1 || !Array.isArray(parsed.sessions)) return null;
+      console.info('[SessionRooms] Restored', parsed.sessions.length, 'sessions from localStorage');
+      return parsed.sessions;
+    } catch (e) {
+      console.warn('[SessionRooms] Failed to load from localStorage:', e);
+      return null;
+    }
+  }
+
+  function clearStorage() {
+    if (typeof localStorage !== 'undefined') {
+      localStorage.removeItem(STORAGE_KEY);
+      console.info('[SessionRooms] Cleared localStorage');
+    }
+  }
+
+  // ─── PUBLIC API ───────────────────────────────────────
+  return {
+    init,
+    updateSessions,
+    update,
+    getClickableMeshes,
+    handleRoomClick,
+    clearStorage,
+    // For external inspection
+    getRooms: () => _rooms,
+    getSession: (id) => _sessionIndex[id] || null,
+    isFlyActive: () => _flyActive
+  };
+
+})();
+
+export { SessionRooms };

nexus/components/spatial-memory.js

@@ -8,12 +8,20 @@
 // holographic archive.
 //
 // World layout (hex cylinder, radius 25):
-//   North (z-)  → Documents & Knowledge
+//
-//   South (z+)  → Projects & Tasks
+//   Inner ring — original Mnemosyne taxonomy (radius 15):
-//   East  (x+)  → Code & Engineering
+//     North (z-)  → Documents & Knowledge
-//   West  (x-)  → Conversations & Social
+//     South (z+)  → Projects & Tasks
-//   Center      → Active Working Memory
+//     East  (x+)  → Code & Engineering
-//   Below (y-)  → Archive (cold storage)
+//     West  (x-)  → Conversations & Social
+//     Center      → Active Working Memory
+//     Below (y-)  → Archive (cold storage)
+//
+//   Outer ring — MemPalace category zones (radius 20, issue #1168):
+//     North (z-)  → User Preferences   [golden]
+//     East  (x+)  → Project facts      [blue]
+//     South (z+)  → Tool knowledge     [green]
+//     West  (x-)  → General facts      [gray]
 //
 // Usage from app.js:
 //   SpatialMemory.init(scene);
@@ -73,6 +81,44 @@ const SpatialMemory = (() => {
       color: 0x334455,
       glyph: '\uD83D\uDDC4',
       description: 'Cold storage — rarely accessed, aged-out memories'
+    },
+
+    // ── MemPalace category zones — outer ring, issue #1168 ────────────
+    user_pref: {
+      label: 'User Preferences',
+      center: [0, 0, -20],
+      radius: 10,
+      color: 0xffd700,
+      glyph: '\u2605',
+      description: 'Personal preferences, habits, user-specific settings',
+      labelY: 5
+    },
+    project: {
+      label: 'Project Facts',
+      center: [20, 0, 0],
+      radius: 10,
+      color: 0x4488ff,
+      glyph: '\uD83D\uDCC1',
+      description: 'Project-specific knowledge, goals, context',
+      labelY: 5
+    },
+    tool: {
+      label: 'Tool Knowledge',
+      center: [0, 0, 20],
+      radius: 10,
+      color: 0x44cc66,
+      glyph: '\uD83D\uDD27',
+      description: 'Tools, commands, APIs, and how to use them',
+      labelY: 5
+    },
+    general: {
+      label: 'General Facts',
+      center: [-20, 0, 0],
+      radius: 10,
+      color: 0x8899aa,
+      glyph: '\uD83D\uDCDD',
+      description: 'Miscellaneous facts not fitting other categories',
+      labelY: 5
     }
   };
 
@@ -99,6 +145,7 @@ const SpatialMemory = (() => {
     const cx = region.center[0];
     const cy = region.center[1] + 0.06;
     const cz = region.center[2];
+    const labelY = region.labelY || 3;
 
     const ringGeo = new THREE.RingGeometry(region.radius - 0.5, region.radius, 6);
     const ringMat = new THREE.MeshBasicMaterial({
@@ -126,6 +173,22 @@ const SpatialMemory = (() => {
     _scene.add(ring);
     _scene.add(disc);
 
+    // Ground glow — brighter disc for MemPalace zones (labelY > 3 signals outer ring)
+    let glowDisc = null;
+    if (labelY > 3) {
+      const glowGeo = new THREE.CircleGeometry(region.radius, 32);
+      const glowMat = new THREE.MeshBasicMaterial({
+        color: region.color,
+        transparent: true,
+        opacity: 0.06,
+        side: THREE.DoubleSide
+      });
+      glowDisc = new THREE.Mesh(glowGeo, glowMat);
+      glowDisc.rotation.x = -Math.PI / 2;
+      glowDisc.position.set(cx, cy - 0.02, cz);
+      _scene.add(glowDisc);
+    }
+
     // Floating label
     const canvas = document.createElement('canvas');
     canvas.width = 256;
@@ -139,11 +202,11 @@ const SpatialMemory = (() => {
     const texture = new THREE.CanvasTexture(canvas);
     const spriteMat = new THREE.SpriteMaterial({ map: texture, transparent: true, opacity: 0.6 });
     const sprite = new THREE.Sprite(spriteMat);
-    sprite.position.set(cx, 3, cz);
+    sprite.position.set(cx, labelY, cz);
     sprite.scale.set(4, 1, 1);
     _scene.add(sprite);
 
-    return { ring, disc, sprite };
+    return { ring, disc, glowDisc, sprite };
   }
 
   // ─── PLACE A MEMORY ──────────────────────────────────
@@ -283,6 +346,9 @@ const SpatialMemory = (() => {
       if (marker.ring && marker.ring.material) {
         marker.ring.material.opacity = 0.1 + Math.sin(now * 0.001) * 0.05;
       }
+      if (marker.glowDisc && marker.glowDisc.material) {
+        marker.glowDisc.material.opacity = 0.04 + Math.sin(now * 0.0008) * 0.02;
+      }
     });
   }
 
@@ -456,6 +522,81 @@ const SpatialMemory = (() => {
     return count;
   }
 
+  // ─── GRAVITY WELL CLUSTERING ──────────────────────────
+  // Force-directed layout: same-category crystals attract, unrelated repel.
+  // Run on load (bake positions, not per-frame). Spec from issue #1175.
+  const GRAVITY_ITERATIONS = 20;
+  const ATTRACT_FACTOR = 0.10; // 10% closer to same-category centroid per iteration
+  const REPEL_FACTOR   = 0.05; // 5% away from nearest unrelated crystal
+
+  function runGravityLayout() {
+    const objs = Object.values(_memoryObjects);
+    if (objs.length < 2) {
+      console.info('[Mnemosyne] Gravity layout: fewer than 2 crystals, skipping');
+      return;
+    }
+    console.info('[Mnemosyne] Gravity layout starting —', objs.length, 'crystals,', GRAVITY_ITERATIONS, 'iterations');
+
+    for (let iter = 0; iter < GRAVITY_ITERATIONS; iter++) {
+      // Accumulate displacements before applying (avoids order-of-iteration bias)
+      const dx = new Float32Array(objs.length);
+      const dy = new Float32Array(objs.length);
+      const dz = new Float32Array(objs.length);
+
+      objs.forEach((obj, i) => {
+        const pos = obj.mesh.position;
+        const cat  = obj.region;
+
+        // ── Attraction toward same-category centroid ──────────────
+        let sx = 0, sy = 0, sz = 0, sameCount = 0;
+        objs.forEach(o => {
+          if (o === obj || o.region !== cat) return;
+          sx += o.mesh.position.x;
+          sy += o.mesh.position.y;
+          sz += o.mesh.position.z;
+          sameCount++;
+        });
+        if (sameCount > 0) {
+          dx[i] += ((sx / sameCount) - pos.x) * ATTRACT_FACTOR;
+          dy[i] += ((sy / sameCount) - pos.y) * ATTRACT_FACTOR;
+          dz[i] += ((sz / sameCount) - pos.z) * ATTRACT_FACTOR;
+        }
+
+        // ── Repulsion from nearest unrelated crystal ───────────────
+        let nearestDist = Infinity;
+        let rnx = 0, rny = 0, rnz = 0;
+        objs.forEach(o => {
+          if (o === obj || o.region === cat) return;
+          const ex = pos.x - o.mesh.position.x;
+          const ey = pos.y - o.mesh.position.y;
+          const ez = pos.z - o.mesh.position.z;
+          const d  = Math.sqrt(ex * ex + ey * ey + ez * ez);
+          if (d < nearestDist) {
+            nearestDist = d;
+            rnx = ex; rny = ey; rnz = ez;
+          }
+        });
+        if (nearestDist > 0.001 && nearestDist < Infinity) {
+          const len = Math.sqrt(rnx * rnx + rny * rny + rnz * rnz);
+          dx[i] += (rnx / len) * nearestDist * REPEL_FACTOR;
+          dy[i] += (rny / len) * nearestDist * REPEL_FACTOR;
+          dz[i] += (rnz / len) * nearestDist * REPEL_FACTOR;
+        }
+      });
+
+      // Apply displacements
+      objs.forEach((obj, i) => {
+        obj.mesh.position.x += dx[i];
+        obj.mesh.position.y += dy[i];
+        obj.mesh.position.z += dz[i];
+      });
+    }
+
+    // Bake final positions to localStorage
+    saveToStorage();
+    console.info('[Mnemosyne] Gravity layout complete — positions baked to localStorage');
+  }
+
   // ─── SPATIAL SEARCH ──────────────────────────────────
   function searchNearby(position, maxResults, maxDist) {
     maxResults = maxResults || 10;
@@ -471,11 +612,53 @@ const SpatialMemory = (() => {
     return results.slice(0, maxResults);
   }
 
+
+  // ─── CRYSTAL MESH COLLECTION (for raycasting) ────────
+  function getCrystalMeshes() {
+    return Object.values(_memoryObjects).map(o => o.mesh);
+  }
+
+  // ─── MEMORY DATA FROM MESH ───────────────────────────
+  function getMemoryFromMesh(mesh) {
+    const entry = Object.values(_memoryObjects).find(o => o.mesh === mesh);
+    return entry ? { data: entry.data, region: entry.region } : null;
+  }
+
+  // ─── HIGHLIGHT / SELECT ──────────────────────────────
+  let _selectedId = null;
+  let _selectedOriginalEmissive = null;
+
+  function highlightMemory(memId) {
+    clearHighlight();
+    const obj = _memoryObjects[memId];
+    if (!obj) return;
+    _selectedId = memId;
+    _selectedOriginalEmissive = obj.mesh.material.emissiveIntensity;
+    obj.mesh.material.emissiveIntensity = 4.0;
+    obj.mesh.userData.selected = true;
+  }
+
+  function clearHighlight() {
+    if (_selectedId && _memoryObjects[_selectedId]) {
+      const obj = _memoryObjects[_selectedId];
+      obj.mesh.material.emissiveIntensity = _selectedOriginalEmissive || (obj.data.strength || 0.7) * 2.5;
+      obj.mesh.userData.selected = false;
+    }
+    _selectedId = null;
+    _selectedOriginalEmissive = null;
+  }
+
+  function getSelectedId() {
+    return _selectedId;
+  }
+
   return {
     init, placeMemory, removeMemory, update,
     getMemoryAtPosition, getRegionAtPosition, getMemoriesInRegion, getAllMemories,
+    getCrystalMeshes, getMemoryFromMesh, highlightMemory, clearHighlight, getSelectedId,
     exportIndex, importIndex, searchNearby, REGIONS,
-    saveToStorage, loadFromStorage, clearStorage
+    saveToStorage, loadFromStorage, clearStorage,
+    runGravityLayout
   };
 })();
 

style.css

@@ -1223,3 +1223,360 @@ canvas#nexus-canvas {
 .l402-msg { color: #fff; }
 
 .pse-status { color: #4af0c0; font-weight: 600; }
+
+
+/* ═══════════════════════════════════════════
+   MNEMOSYNE — MEMORY CRYSTAL INSPECTION PANEL
+   ═══════════════════════════════════════════ */
+
+.memory-panel {
+  position: fixed;
+  top: 50%;
+  right: 24px;
+  transform: translateY(-50%);
+  z-index: 120;
+  animation: memoryPanelIn 0.22s ease-out forwards;
+}
+
+.memory-panel-fade-out {
+  animation: memoryPanelOut 0.18s ease-in forwards !important;
+}
+
+@keyframes memoryPanelIn {
+  from { opacity: 0; transform: translateY(-50%) translateX(16px); }
+  to   { opacity: 1; transform: translateY(-50%) translateX(0); }
+}
+
+@keyframes memoryPanelOut {
+  from { opacity: 1; }
+  to   { opacity: 0; transform: translateY(-50%) translateX(12px); }
+}
+
+.memory-panel-content {
+  width: 340px;
+  background: rgba(8, 8, 24, 0.92);
+  backdrop-filter: blur(12px);
+  border: 1px solid rgba(74, 240, 192, 0.25);
+  border-radius: 12px;
+  padding: 16px;
+  box-shadow: 0 0 30px rgba(74, 240, 192, 0.08), 0 8px 32px rgba(0, 0, 0, 0.4);
+}
+
+.memory-panel-header {
+  display: flex;
+  align-items: center;
+  gap: 6px;
+  margin-bottom: 10px;
+  padding-bottom: 10px;
+  border-bottom: 1px solid rgba(255, 255, 255, 0.06);
+}
+
+.memory-panel-region-dot {
+  width: 10px;
+  height: 10px;
+  border-radius: 50%;
+  flex-shrink: 0;
+}
+
+.memory-panel-region {
+  font-family: var(--font-display, monospace);
+  font-size: 11px;
+  letter-spacing: 0.15em;
+  color: var(--color-primary, #4af0c0);
+  text-transform: uppercase;
+  flex: 1;
+}
+
+.memory-panel-close {
+  background: none;
+  border: 1px solid rgba(255, 255, 255, 0.1);
+  color: var(--color-text-muted, #888);
+  font-size: 14px;
+  cursor: pointer;
+  width: 24px;
+  height: 24px;
+  border-radius: 6px;
+  display: flex;
+  align-items: center;
+  justify-content: center;
+  transition: all 0.15s;
+}
+
+.memory-panel-close:hover {
+  background: rgba(255, 255, 255, 0.05);
+  color: #fff;
+}
+
+.memory-panel-body {
+  font-size: 14px;
+  line-height: 1.6;
+  color: var(--color-text, #ccc);
+  margin-bottom: 14px;
+  max-height: 120px;
+  overflow-y: auto;
+  word-break: break-word;
+}
+
+.memory-panel-meta {
+  display: flex;
+  flex-direction: column;
+  gap: 5px;
+  font-size: 11px;
+}
+
+.memory-meta-row {
+  display: flex;
+  gap: 8px;
+  align-items: baseline;
+}
+
+.memory-meta-label {
+  color: var(--color-text-muted, #666);
+  text-transform: uppercase;
+  letter-spacing: 0.08em;
+  min-width: 50px;
+  flex-shrink: 0;
+}
+
+.memory-meta-row span:last-child {
+  color: var(--color-text, #aaa);
+  word-break: break-all;
+}
+
+.memory-conn-tag {
+  display: inline-block;
+  background: rgba(74, 240, 192, 0.1);
+  border: 1px solid rgba(74, 240, 192, 0.2);
+  border-radius: 4px;
+  padding: 1px 6px;
+  font-size: 10px;
+  font-family: var(--font-mono, monospace);
+  color: var(--color-primary, #4af0c0);
+  margin: 1px 2px;
+}
+
+.memory-conn-link {
+  cursor: pointer;
+  transition: background 0.15s, border-color 0.15s;
+}
+
+.memory-conn-link:hover {
+  background: rgba(74, 240, 192, 0.22);
+  border-color: rgba(74, 240, 192, 0.5);
+  color: #fff;
+}
+
+/* Entity name — large heading inside panel */
+.memory-entity-name {
+  font-family: var(--font-display, monospace);
+  font-size: 17px;
+  font-weight: 700;
+  color: #fff;
+  letter-spacing: 0.04em;
+  margin-bottom: 8px;
+  text-transform: capitalize;
+  word-break: break-word;
+}
+
+/* Category badge */
+.memory-category-badge {
+  font-family: var(--font-display, monospace);
+  font-size: 9px;
+  letter-spacing: 0.12em;
+  font-weight: 700;
+  padding: 2px 6px;
+  border-radius: 4px;
+  border: 1px solid rgba(74, 240, 192, 0.3);
+  background: rgba(74, 240, 192, 0.12);
+  color: var(--color-primary, #4af0c0);
+  flex-shrink: 0;
+}
+
+/* Trust score bar */
+.memory-trust-row {
+  display: flex;
+  align-items: center;
+  gap: 8px;
+  margin-bottom: 12px;
+  font-size: 11px;
+}
+
+.memory-trust-bar {
+  flex: 1;
+  height: 5px;
+  background: rgba(255, 255, 255, 0.08);
+  border-radius: 3px;
+  overflow: hidden;
+}
+
+.memory-trust-fill {
+  height: 100%;
+  border-radius: 3px;
+  background: var(--color-primary, #4af0c0);
+  transition: width 0.35s ease;
+}
+
+.memory-trust-value {
+  color: var(--color-text-muted, #888);
+  min-width: 32px;
+  text-align: right;
+}
+
+/* Pin button */
+.memory-panel-pin {
+  background: none;
+  border: 1px solid rgba(255, 255, 255, 0.1);
+  color: var(--color-text-muted, #888);
+  font-size: 11px;
+  cursor: pointer;
+  width: 24px;
+  height: 24px;
+  border-radius: 6px;
+  display: flex;
+  align-items: center;
+  justify-content: center;
+  transition: all 0.15s;
+  flex-shrink: 0;
+}
+
+.memory-panel-pin:hover {
+  background: rgba(255, 255, 255, 0.05);
+  color: #fff;
+}
+
+.memory-panel-pin.pinned {
+  background: rgba(74, 240, 192, 0.15);
+  border-color: rgba(74, 240, 192, 0.4);
+  color: var(--color-primary, #4af0c0);
+}
+
+/* Related row — allow wrapping */
+.memory-meta-row--related {
+  align-items: flex-start;
+}
+
+.memory-meta-row--related span:last-child {
+  flex-wrap: wrap;
+  display: flex;
+  gap: 2px;
+}
+
+/* ═══════════════════════════════════════════════════════
+   PROJECT MNEMOSYNE — SESSION ROOM HUD PANEL (#1171)
+═══════════════════════════════════════════════════════ */
+
+.session-room-panel {
+  position: fixed;
+  bottom: 24px;
+  left: 50%;
+  transform: translateX(-50%);
+  z-index: 125;
+  animation: sessionPanelIn 0.25s ease-out forwards;
+}
+
+.session-room-panel.session-panel-fade-out {
+  animation: sessionPanelOut 0.2s ease-in forwards !important;
+}
+
+@keyframes sessionPanelIn {
+  from { opacity: 0; transform: translateX(-50%) translateY(12px); }
+  to   { opacity: 1; transform: translateX(-50%) translateY(0); }
+}
+
+@keyframes sessionPanelOut {
+  from { opacity: 1; }
+  to   { opacity: 0; transform: translateX(-50%) translateY(10px); }
+}
+
+.session-room-panel-content {
+  min-width: 320px;
+  max-width: 480px;
+  background: rgba(8, 4, 28, 0.93);
+  backdrop-filter: blur(14px);
+  border: 1px solid rgba(123, 92, 255, 0.35);
+  border-radius: 12px;
+  padding: 14px 18px;
+  box-shadow: 0 0 32px rgba(123, 92, 255, 0.1), 0 8px 32px rgba(0, 0, 0, 0.45);
+}
+
+.session-room-header {
+  display: flex;
+  align-items: center;
+  gap: 8px;
+  margin-bottom: 8px;
+  padding-bottom: 8px;
+  border-bottom: 1px solid rgba(255, 255, 255, 0.07);
+}
+
+.session-room-icon {
+  font-size: 14px;
+  line-height: 1;
+}
+
+.session-room-title {
+  font-family: var(--font-display, monospace);
+  font-size: 11px;
+  letter-spacing: 0.18em;
+  color: #9b7cff;
+  text-transform: uppercase;
+  flex: 1;
+}
+
+.session-room-close {
+  background: none;
+  border: none;
+  color: rgba(255, 255, 255, 0.35);
+  cursor: pointer;
+  font-size: 14px;
+  padding: 0 2px;
+  line-height: 1;
+  transition: color 0.15s;
+}
+
+.session-room-close:hover {
+  color: rgba(255, 255, 255, 0.8);
+}
+
+.session-room-timestamp {
+  font-family: var(--font-display, monospace);
+  font-size: 13px;
+  color: #c8b4ff;
+  margin-bottom: 6px;
+  letter-spacing: 0.08em;
+}
+
+.session-room-fact-count {
+  font-size: 11px;
+  color: rgba(200, 180, 255, 0.55);
+  margin-bottom: 10px;
+}
+
+.session-room-facts {
+  display: flex;
+  flex-direction: column;
+  gap: 4px;
+  max-height: 140px;
+  overflow-y: auto;
+}
+
+.session-room-fact-item {
+  font-size: 11px;
+  color: rgba(220, 210, 255, 0.75);
+  padding: 4px 8px;
+  background: rgba(123, 92, 255, 0.07);
+  border-left: 2px solid rgba(123, 92, 255, 0.4);
+  border-radius: 0 4px 4px 0;
+  white-space: nowrap;
+  overflow: hidden;
+  text-overflow: ellipsis;
+}
+
+.session-room-hint {
+  margin-top: 10px;
+  font-size: 10px;
+  color: rgba(200, 180, 255, 0.35);
+  text-align: center;
+  letter-spacing: 0.1em;
+  text-transform: uppercase;
+}
+