Add automatic B/T compact unit formatting

frontend/src/features/pool/utils/__tests__/poolStatsDisplay.spec.ts

@@ -112,4 +112,16 @@ describe('poolStatsDisplay', () => {
       total_cost_usd: '$12.35',
     })
   })
+
+  it('promotes large token totals above M', () => {
+    const display = buildPoolStatsDisplay(
+      createCodexKey({ total_tokens: 1_500_000_000 }),
+      'openai',
+      'account_total',
+    )
+
+    expect(display.kind).toBe('account_total')
+    if (display.kind !== 'account_total') throw new Error('expected account total display')
+    expect(metricValues(display.metrics).total_tokens).toBe('1.5B')
+  })
 })

frontend/src/features/pool/utils/poolStatsDisplay.ts

@@ -1,5 +1,6 @@
 import type { QuotaWindowUsageSnapshot } from '@/api/endpoints/types/statusSnapshot'
 import type { PoolManagementStatsMode } from '@/features/pool/utils/poolManagementState'
+import { formatCompactNumber } from '@/utils/format'
 
 export type PoolStatsMetricKey = 'request_count' | 'total_tokens' | 'total_cost_usd'
 export type PoolStatsDisplayKind = 'account_total' | 'codex_cycle'
@@ -63,9 +64,7 @@ export function formatPoolStatInteger(value: number | null | undefined): string
 export function formatPoolTokenCount(value: number | null | undefined): string {
   const n = Number(value ?? 0)
   if (!Number.isFinite(n) || n <= 0) return '0'
-  if (n >= 1_000_000) return `${(n / 1_000_000).toFixed(1)}M`
-  if (n >= 1_000) return `${(n / 1_000).toFixed(1)}K`
-  return String(Math.round(n))
+  return formatCompactNumber(Math.round(n), { fractionDigits: 1 })
 }
 
 export function formatPoolStatUsd(value: number | string | null | undefined): string {