feat: Phase 3 — wire panel modules (heatmap, agent-board, dual-brain, LoRA, sovereignty, earth)

- core/theme.js: export NEXUS with full NEXUS.theme.* properties used by all 6 panels
- core/ticker.js: add subscribe() convenience export so panels can self-register
- data/gitea.js: also write state.agentStatus, activeAgentCount, zoneIntensity, commits, commitHashes
- data/loaders.js: also write state.sovereignty
- data/bitcoin.js: also write state.blockHeight, lastBlockHeight, newBlockDetected, starPulseIntensity
- data/weather.js: also write state.weather
- app.js: import + init all 6 panel modules, bootstrap data polling, call globalTicker.tick()

Fixes #412
Refs #409

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

modules/data/loaders.js

@@ -1,6 +1,8 @@
 // modules/data/loaders.js — Static file loaders (portals.json, sovereignty-status.json, SOUL.md)
-// Writes to S: sovereigntyScore, sovereigntyLabel
+// Writes to S: sovereigntyScore, sovereigntyLabel (legacy)
+// Writes to state: sovereignty
 import { S } from '../state.js';
+import { state } from '../core/state.js';
 
 // --- SOUL.md (cached) ---
 let _soulMdCache = null;
@@ -37,6 +39,7 @@ export async function fetchSovereigntyStatus() {
 
     S.sovereigntyScore = score;
     S.sovereigntyLabel = label;
+    state.sovereignty = { score, label, assessment_type: assessmentType };
 
     return { score, label, assessmentType };
   } catch {