feat: Unraid deploy, dealer-flow heatmap, confluence zones, 13F capture

Ship Node production images, Unraid compose, and Gitea CI/CD (test then
push registry images; cron script if no runner). Rebuild dealer flow as a
heatmap-first map with integrity gates and chart helpers. Add confluence
zone rules, session clock, capture evidence, and tighter 13F/queue/options
paths, plus the matching UI and tests.

app/server/src/analysis/__tests__/dealerExposureEngine.test.ts

@@ -3,6 +3,7 @@ import { strict as assert } from 'node:assert';
 import {
   buildDealerMap,
   contractGex,
+  contractVex,
   isDegradedDealerMap,
   isHealthyDealerMap,
   isSaneIv,
@@ -50,6 +51,13 @@ test('contractGex: call positive, put negative', () => {
   assert.equal(call, -put);
 });
 
+test('contractVex uses the same S² notional as GEX', () => {
+  const gex = contractGex(0.02, 1000, 44, 'call');
+  const vex = contractVex(0.02, 1000, 44, 'call');
+  assert.equal(vex, gex);
+  assert.equal(contractVex(0.02, 1000, 44, 'put'), -vex);
+});
+
 test('buildDealerMap: expiries sorted nearest-left and capped', () => {
   const rows: NormalizedOptionRow[] = [];
   for (const exp of ['2026-08-08', '2026-08-15', '2026-08-22', '2026-09-19', '2026-10-17', '2026-11-21', '2026-12-19', '2027-01-16']) {