ENH - add slow VaultX market cycles

Drive server-authoritative prices through alternating global and per-market trend phases with eased transitions, reduced noise, momentum, mean reversion, and rare bounded shocks. Mirror the cycle model in browser mocks and slow development preview ticks so charts show readable highs and downs.

frontend/src/views/apps/CryptoApp.contract.test.ts

@@ -22,6 +22,10 @@ const config = readFileSync(
   new URL('../../../../sky_phone/config/config.lua', import.meta.url),
   'utf8',
 )
+const testServer = readFileSync(
+  new URL('../../../testserver/index.cjs', import.meta.url),
+  'utf8',
+)
 
 describe('VaultX crypto app contracts', () => {
   it('uses Sky UI without introducing Konsta components', () => {
@@ -247,13 +251,24 @@ describe('VaultX crypto app contracts', () => {
     expect(config).toContain('PriceTickMinimumSeconds')
     expect(config).toContain('MarketsPerTickMaximum')
     expect(config).toContain('TickMovementDivisor')
+    expect(config).toContain('CycleDurationMinimumTicks')
+    expect(config).toContain('CycleStrengthMaximumBasisPoints')
+    expect(config).toContain('GlobalCycleMinimumTicks')
     expect(config).toContain('MarketShockChanceBasisPoints')
     expect(server).toContain('local market_dynamics = {}')
     expect(server).toContain('global_market_trend')
+    expect(server).toContain('local function advance_market_cycle')
+    expect(server).toContain(
+      'dynamics.cycle_direction = -dynamics.cycle_direction',
+    )
+    expect(server).toContain('local function advance_global_market_cycle')
     expect(server).toContain('Config.Crypto.MeanReversionBasisPoints')
     expect(server).toContain('TriggerClientEvent("sky_phone:crypto:changed"')
     expect(server).toContain('priceHistory = price_history')
     expect(source).toContain('selected.priceHistory')
+    expect(source).toContain('4500 + Math.random() * 2500')
+    expect(testServer).toContain('const cryptoMarketDynamics = new Map()')
+    expect(testServer).toContain('function advanceCryptoCycle(')
   })
 
   it('stores cash in price-scale minor units throughout the ledger', () => {

frontend/src/views/apps/CryptoApp.vue

@@ -677,7 +677,7 @@ function scheduleDevelopmentMarketTick() {
       await crypto.previewMarketTick()
       scheduleDevelopmentMarketTick()
     },
-    1600 + Math.random() * 1800,
+    4500 + Math.random() * 2500,
   )
 }
 onMounted(async () => {