fix(providers): derive Codex primary quota label from window

frontend/src/utils/__tests__/codexQuotaWindow.spec.ts

@@ -1,6 +1,10 @@
 import { describe, expect, it } from 'vitest'
 
-import { getCodexQuotaWindowPresentation } from '../codexQuotaWindow'
+import {
+  getCodexPrimaryQuotaWindow,
+  getCodexQuotaWindowLimitLabel,
+  getCodexQuotaWindowPresentation,
+} from '../codexQuotaWindow'
 
 describe('getCodexQuotaWindowPresentation', () => {
   it.each([
@@ -25,6 +29,22 @@ describe('getCodexQuotaWindowPresentation', () => {
     expect(windows.sort((a, b) => a.sortOrder - b.sortOrder).map(item => item.label)).toEqual(['5H', '周'])
   })
 
+  it('builds the provider limit label from the actual window duration', () => {
+    expect(getCodexQuotaWindowLimitLabel({ code: 'weekly', window_minutes: 10_080 })).toBe('周限额')
+    expect(getCodexQuotaWindowLimitLabel({ code: 'weekly', window_minutes: 43_800 })).toBe('月限额')
+  })
+
+  it('selects a monthly primary window over a zero-minute weekly placeholder', () => {
+    const monthly = { code: 'monthly', label: '月', window_minutes: 43_800, used_ratio: 0.02 }
+    const selected = getCodexPrimaryQuotaWindow([
+      monthly,
+      { code: 'weekly', label: '周', window_minutes: 0, used_ratio: 1 },
+    ])
+
+    expect(selected).toEqual(monthly)
+    expect(getCodexQuotaWindowLimitLabel(selected!)).toBe('月限额')
+  })
+
   it('drops zero-minute placeholder windows', () => {
     expect(getCodexQuotaWindowPresentation({
       code: 'weekly',

frontend/src/utils/codexQuotaWindow.ts

@@ -60,3 +60,20 @@ export function getCodexQuotaWindowPresentation(
     sortOrder: (isSpark ? 10_000_000 : 0) + (hasExplicitWindowMinutes ? windowMinutes : fallbackOrder),
   }
 }
+
+export function getCodexQuotaWindowLimitLabel(window: QuotaWindowSnapshot): string | null {
+  const presentation = getCodexQuotaWindowPresentation(window)
+  return presentation ? `${presentation.label}限额` : null
+}
+
+export function getCodexPrimaryQuotaWindow(
+  windows: QuotaWindowSnapshot[] | null | undefined,
+): QuotaWindowSnapshot | null {
+  if (!Array.isArray(windows)) return null
+
+  for (const code of ['monthly', 'weekly']) {
+    const window = windows.find(candidate => String(candidate.code || '').trim().toLowerCase() === code)
+    if (window && getCodexQuotaWindowPresentation(window)) return window
+  }
+  return null
+}