refactor: move symbolic engine components to separate file

app.js

@@ -86,6 +86,11 @@ let flyY = 2;
 
 // ═══ INIT ═══
 
+import { 
+  SymbolicEngine, AgentFSM, KnowledgeGraph, Blackboard, 
+  SymbolicPlanner, HTNPlanner, CaseBasedReasoner, 
+  NeuroSymbolicBridge, MetaReasoningLayer 
+} from './nexus/symbolic-engine.js';
 // ═══ SOVEREIGN SYMBOLIC ENGINE (GOFAI) ═══
 class SymbolicEngine {
   constructor() {
@@ -613,7 +618,7 @@ function setupGOFAI() {
   l402Client = new L402Client();
   nostrAgent.announce({ name: "Timmy Nexus Agent", capabilities: ["GOFAI", "L402"] });
   pseLayer = new PSELayer();
-  calibrator = new AdaptiveCalibrator('nexus-v1', { base_rate: 0.05 });
+  calibrator = new AdaptiveCalibrator('nexus-v1', { base_rate: 0.05 });\n  MemoryOptimizer.blackboard = blackboard;
 
   // Setup initial facts
   symbolicEngine.addFact('energy', 100);