Unify FunZone voucher sync on the accounting documents page.

Consolidate sync buttons into one flow on ????? ????????, deduplicate treasury vs invoice and customer vouchers, add FunZone inventory lifecycle views, and improve stat card number display.

Co-authored-by: Cursor <cursoragent@cursor.com>

src/pages/Dashboard.tsx

@@ -1,5 +1,6 @@
 import { useMemo } from 'react'
 import { Link } from 'react-router-dom'
+import { visibleVouchers } from '../accounting/voucherDedupe'
 import { useStore } from '../store/AppStore'
 import { Badge, Card, PageHeader, StatCard } from '../components/ui'
 import { formatMoney, formatMoneyWithUnit, toFa } from '../utils/format'
@@ -51,7 +52,8 @@ export function Dashboard() {
   const { data } = useStore()
 
   const metrics = useMemo(() => {
-    const balances = trialBalance(data.accounts, data.vouchers)
+    const vouchers = visibleVouchers(data.vouchers, data)
+    const balances = trialBalance(data.accounts, vouchers)
     const liquidity = balances
       .filter((b) => ['1001', '1002', '1003'].includes(b.account.code))
       .reduce((sum, b) => sum + b.balance, 0)