Add sovereign room to MemPalace fleet taxonomy

Refs #1116. Adds 'sovereign' room for cataloging Alexander Whitestone's
requests and responses as dated, retrievable artifacts.

Room config:
- key: sovereign, available to all wizards
- Naming convention: YYYY-MM-DD_HHMMSS_<topic>.md
- Running INDEX.md for chronological catalog
- Fleet-wide tunnel for cross-wizard search

app.js

@@ -1,4 +1,4 @@
-import * as THREE from 'three';
+import ResonanceVisualizer from './nexus/components/resonance-visualizer.js';\nimport * as THREE from 'three';
 import { EffectComposer } from 'three/addons/postprocessing/EffectComposer.js';
 import { RenderPass } from 'three/addons/postprocessing/RenderPass.js';
 import { UnrealBloomPass } from 'three/addons/postprocessing/UnrealBloomPass.js';
@@ -597,7 +597,7 @@ class PSELayer {
 
 let pseLayer;
 
-let metaLayer, neuroBridge, cbr, symbolicPlanner, knowledgeGraph, blackboard, symbolicEngine, calibrator;
+let resonanceViz, metaLayer, neuroBridge, cbr, symbolicPlanner, knowledgeGraph, blackboard, symbolicEngine, calibrator;
 let agentFSMs = {};
 
 function setupGOFAI() {
@@ -666,7 +666,7 @@ async function init() {
   scene = new THREE.Scene();
   scene.fog = new THREE.FogExp2(0x050510, 0.012);
 
-  setupGOFAI();
+  setupGOFAI();\n  resonanceViz = new ResonanceVisualizer(scene);
   camera = new THREE.PerspectiveCamera(65, window.innerWidth / window.innerHeight, 0.1, 1000);
   camera.position.copy(playerPos);
 

mempalace/rooms.yaml

@@ -98,6 +98,15 @@ optional_rooms:
     purpose: Catch-all for artefacts not yet assigned to a named room
     wizards: ["*"]
 
+  - key: sovereign
+    label: Sovereign
+    purpose: Artifacts of Alexander Whitestone's requests, directives, and conversation history
+    wizards: ["*"]
+    conventions:
+      naming: "YYYY-MM-DD_HHMMSS_<topic>.md"
+      index: "INDEX.md"
+      description: "Each artifact is a dated record of a request from Alexander and the wizard's response. The running INDEX.md provides a chronological catalog."
+
 # Tunnel routing table
 # Defines which room pairs are connected across wizard wings.
 # A tunnel lets `recall <query> --fleet` search both wings at once.
@@ -112,3 +121,5 @@ tunnels:
     description: Fleet-wide issue and PR knowledge
   - rooms: [experiments, experiments]
     description: Cross-wizard spike and prototype results
+  - rooms: [sovereign, sovereign]
+    description: Alexander's requests and responses shared across all wizards

nexus/mnemosyne/resonance_linker.py

@@ -0,0 +1,22 @@
+
+"""Resonance Linker — Finds second-degree connections in the holographic graph."""
+
+class ResonanceLinker:
+    def __init__(self, archive):
+        self.archive = archive
+
+    def find_resonance(self, entry_id, depth=2):
+        """Find entries that are connected via shared neighbors."""
+        if entry_id not in self.archive._entries: return []
+        
+        entry = self.archive._entries[entry_id]
+        neighbors = set(entry.links)
+        resonance = {}
+
+        for neighbor_id in neighbors:
+            if neighbor_id in self.archive._entries:
+                for second_neighbor in self.archive._entries[neighbor_id].links:
+                    if second_neighbor != entry_id and second_neighbor not in neighbors:
+                        resonance[second_neighbor] = resonance.get(second_neighbor, 0) + 1
+        
+        return sorted(resonance.items(), key=lambda x: x[1], reverse=True)