feat: wire effects/ modules into app.js via globalTicker (Refs #413)

- init all 6 effects modules in app.js (matrix-rain, lightning, energy-beam, rune-ring, gravity-zones, shockwave)
- subscribe each to globalTicker; tick() called in the RAF loop
- add subscribe() named export to core/ticker.js for panels compatibility
- bridge data to core/state.js: zoneIntensity from heatmap.js, activeAgentCount + commitHashes from data/gitea.js, portals from portals.js
- update portals.js and weather.js to use new effects/rune-ring and effects/gravity-zones instead of legacy effects.js

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

modules/data/gitea.js

@@ -1,6 +1,7 @@
 // modules/data/gitea.js — All Gitea API calls
 // Writes to S: _activeAgentCount, _matrixCommitHashes, agentStatus
 import { S } from '../state.js';
+import { state } from '../core/state.js';
 
 const GITEA_BASE = 'http://143.198.27.163:3000/api/v1';
 const GITEA_TOKEN = 'dc0517a965226b7a0c5ffdd961b1ba26521ac592';
@@ -122,6 +123,7 @@ export async function refreshCommitData() {
   S._matrixCommitHashes = commits.slice(0, 20)
     .map(c => (c.sha || '').slice(0, 7))
     .filter(h => h.length > 0);
+  state.commitHashes = S._matrixCommitHashes;
   return commits;
 }
 
@@ -129,12 +131,14 @@ export async function refreshAgentData() {
   try {
     const data = await fetchAgentStatus();
     S._activeAgentCount = data.agents.filter(a => a.status === 'working').length;
+    state.activeAgentCount = S._activeAgentCount;
     return data;
   } catch {
     const fallback = { agents: AGENT_NAMES.map(n => ({
       name: n.toLowerCase(), status: 'unreachable', issue: null, prs_today: 0, local: false,
     })) };
     S._activeAgentCount = 0;
+    state.activeAgentCount = 0;
     return fallback;
   }
 }