feat(settings): 增加全局表格分页配置,支持自定义

backend/internal/handler/admin/setting_handler.go

@@ -106,6 +106,8 @@ func (h *SettingHandler) GetSettings(c *gin.Context) {
 		HideCcsImportButton:                  settings.HideCcsImportButton,
 		PurchaseSubscriptionEnabled:          settings.PurchaseSubscriptionEnabled,
 		PurchaseSubscriptionURL:              settings.PurchaseSubscriptionURL,
+		TableDefaultPageSize:                 settings.TableDefaultPageSize,
+		TablePageSizeOptions:                 settings.TablePageSizeOptions,
 		CustomMenuItems:                      dto.ParseCustomMenuItems(settings.CustomMenuItems),
 		CustomEndpoints:                      dto.ParseCustomEndpoints(settings.CustomEndpoints),
 		DefaultConcurrency:                   settings.DefaultConcurrency,
@@ -175,6 +177,8 @@ type UpdateSettingsRequest struct {
 	HideCcsImportButton         bool                  `json:"hide_ccs_import_button"`
 	PurchaseSubscriptionEnabled *bool                 `json:"purchase_subscription_enabled"`
 	PurchaseSubscriptionURL     *string               `json:"purchase_subscription_url"`
+	TableDefaultPageSize        int                   `json:"table_default_page_size"`
+	TablePageSizeOptions        []int                 `json:"table_page_size_options"`
 	CustomMenuItems             *[]dto.CustomMenuItem `json:"custom_menu_items"`
 	CustomEndpoints             *[]dto.CustomEndpoint `json:"custom_endpoints"`
 
@@ -237,6 +241,13 @@ func (h *SettingHandler) UpdateSettings(c *gin.Context) {
 	if req.DefaultBalance < 0 {
 		req.DefaultBalance = 0
 	}
+	// 通用表格配置：兼容旧客户端未传字段时保留当前值。
+	if req.TableDefaultPageSize <= 0 {
+		req.TableDefaultPageSize = previousSettings.TableDefaultPageSize
+	}
+	if req.TablePageSizeOptions == nil {
+		req.TablePageSizeOptions = previousSettings.TablePageSizeOptions
+	}
 	req.SMTPHost = strings.TrimSpace(req.SMTPHost)
 	req.SMTPUsername = strings.TrimSpace(req.SMTPUsername)
 	req.SMTPPassword = strings.TrimSpace(req.SMTPPassword)
@@ -564,6 +575,8 @@ func (h *SettingHandler) UpdateSettings(c *gin.Context) {
 		HideCcsImportButton:              req.HideCcsImportButton,
 		PurchaseSubscriptionEnabled:      purchaseEnabled,
 		PurchaseSubscriptionURL:          purchaseURL,
+		TableDefaultPageSize:             req.TableDefaultPageSize,
+		TablePageSizeOptions:             req.TablePageSizeOptions,
 		CustomMenuItems:                  customMenuJSON,
 		CustomEndpoints:                  customEndpointsJSON,
 		DefaultConcurrency:               req.DefaultConcurrency,
@@ -679,6 +692,8 @@ func (h *SettingHandler) UpdateSettings(c *gin.Context) {
 		HideCcsImportButton:                  updatedSettings.HideCcsImportButton,
 		PurchaseSubscriptionEnabled:          updatedSettings.PurchaseSubscriptionEnabled,
 		PurchaseSubscriptionURL:              updatedSettings.PurchaseSubscriptionURL,
+		TableDefaultPageSize:                 updatedSettings.TableDefaultPageSize,
+		TablePageSizeOptions:                 updatedSettings.TablePageSizeOptions,
 		CustomMenuItems:                      dto.ParseCustomMenuItems(updatedSettings.CustomMenuItems),
 		CustomEndpoints:                      dto.ParseCustomEndpoints(updatedSettings.CustomEndpoints),
 		DefaultConcurrency:                   updatedSettings.DefaultConcurrency,
@@ -871,6 +886,12 @@ func diffSettings(before *service.SystemSettings, after *service.SystemSettings,
 	if before.PurchaseSubscriptionURL != after.PurchaseSubscriptionURL {
 		changed = append(changed, "purchase_subscription_url")
 	}
+	if before.TableDefaultPageSize != after.TableDefaultPageSize {
+		changed = append(changed, "table_default_page_size")
+	}
+	if !equalIntSlice(before.TablePageSizeOptions, after.TablePageSizeOptions) {
+		changed = append(changed, "table_page_size_options")
+	}
 	if before.CustomMenuItems != after.CustomMenuItems {
 		changed = append(changed, "custom_menu_items")
 	}
@@ -927,6 +948,18 @@ func equalDefaultSubscriptions(a, b []service.DefaultSubscriptionSetting) bool {
 	return true
 }
 
+func equalIntSlice(a, b []int) bool {
+	if len(a) != len(b) {
+		return false
+	}
+	for i := range a {
+		if a[i] != b[i] {
+			return false
+		}
+	}
+	return true
+}
+
 // TestSMTPRequest 测试SMTP连接请求
 type TestSMTPRequest struct {
 	SMTPHost     string `json:"smtp_host"`

backend/internal/handler/dto/settings.go

@@ -61,6 +61,8 @@ type SystemSettings struct {
 	HideCcsImportButton         bool             `json:"hide_ccs_import_button"`
 	PurchaseSubscriptionEnabled bool             `json:"purchase_subscription_enabled"`
 	PurchaseSubscriptionURL     string           `json:"purchase_subscription_url"`
+	TableDefaultPageSize        int              `json:"table_default_page_size"`
+	TablePageSizeOptions        []int            `json:"table_page_size_options"`
 	CustomMenuItems             []CustomMenuItem `json:"custom_menu_items"`
 	CustomEndpoints             []CustomEndpoint `json:"custom_endpoints"`
 
@@ -125,6 +127,8 @@ type PublicSettings struct {
 	HideCcsImportButton              bool             `json:"hide_ccs_import_button"`
 	PurchaseSubscriptionEnabled      bool             `json:"purchase_subscription_enabled"`
 	PurchaseSubscriptionURL          string           `json:"purchase_subscription_url"`
+	TableDefaultPageSize             int              `json:"table_default_page_size"`
+	TablePageSizeOptions             []int            `json:"table_page_size_options"`
 	CustomMenuItems                  []CustomMenuItem `json:"custom_menu_items"`
 	CustomEndpoints                  []CustomEndpoint `json:"custom_endpoints"`
 	LinuxDoOAuthEnabled              bool             `json:"linuxdo_oauth_enabled"`

backend/internal/service/setting_service.go

@@ -9,6 +9,7 @@ import (
 	"fmt"
 	"log/slog"
 	"net/url"
+	"sort"
 	"strconv"
 	"strings"
 	"sync/atomic"
@@ -160,6 +161,8 @@ func (s *SettingService) GetPublicSettings(ctx context.Context) (*PublicSettings
 		SettingKeyHideCcsImportButton,
 		SettingKeyPurchaseSubscriptionEnabled,
 		SettingKeyPurchaseSubscriptionURL,
+		SettingKeyTableDefaultPageSize,
+		SettingKeyTablePageSizeOptions,
 		SettingKeyCustomMenuItems,
 		SettingKeyCustomEndpoints,
 		SettingKeyLinuxDoConnectEnabled,
@@ -184,6 +187,10 @@ func (s *SettingService) GetPublicSettings(ctx context.Context) (*PublicSettings
 	registrationEmailSuffixWhitelist := ParseRegistrationEmailSuffixWhitelist(
 		settings[SettingKeyRegistrationEmailSuffixWhitelist],
 	)
+	tableDefaultPageSize, tablePageSizeOptions := parseTablePreferences(
+		settings[SettingKeyTableDefaultPageSize],
+		settings[SettingKeyTablePageSizeOptions],
+	)
 
 	return &PublicSettings{
 		RegistrationEnabled:              settings[SettingKeyRegistrationEnabled] == "true",
@@ -205,6 +212,8 @@ func (s *SettingService) GetPublicSettings(ctx context.Context) (*PublicSettings
 		HideCcsImportButton:              settings[SettingKeyHideCcsImportButton] == "true",
 		PurchaseSubscriptionEnabled:      settings[SettingKeyPurchaseSubscriptionEnabled] == "true",
 		PurchaseSubscriptionURL:          strings.TrimSpace(settings[SettingKeyPurchaseSubscriptionURL]),
+		TableDefaultPageSize:             tableDefaultPageSize,
+		TablePageSizeOptions:             tablePageSizeOptions,
 		CustomMenuItems:                  settings[SettingKeyCustomMenuItems],
 		CustomEndpoints:                  settings[SettingKeyCustomEndpoints],
 		LinuxDoOAuthEnabled:              linuxDoEnabled,
@@ -252,6 +261,8 @@ func (s *SettingService) GetPublicSettingsForInjection(ctx context.Context) (any
 		HideCcsImportButton              bool            `json:"hide_ccs_import_button"`
 		PurchaseSubscriptionEnabled      bool            `json:"purchase_subscription_enabled"`
 		PurchaseSubscriptionURL          string          `json:"purchase_subscription_url,omitempty"`
+		TableDefaultPageSize             int             `json:"table_default_page_size"`
+		TablePageSizeOptions             []int           `json:"table_page_size_options"`
 		CustomMenuItems                  json.RawMessage `json:"custom_menu_items"`
 		CustomEndpoints                  json.RawMessage `json:"custom_endpoints"`
 		LinuxDoOAuthEnabled              bool            `json:"linuxdo_oauth_enabled"`
@@ -277,6 +288,8 @@ func (s *SettingService) GetPublicSettingsForInjection(ctx context.Context) (any
 		HideCcsImportButton:              settings.HideCcsImportButton,
 		PurchaseSubscriptionEnabled:      settings.PurchaseSubscriptionEnabled,
 		PurchaseSubscriptionURL:          settings.PurchaseSubscriptionURL,
+		TableDefaultPageSize:             settings.TableDefaultPageSize,
+		TablePageSizeOptions:             settings.TablePageSizeOptions,
 		CustomMenuItems:                  filterUserVisibleMenuItems(settings.CustomMenuItems),
 		CustomEndpoints:                  safeRawJSONArray(settings.CustomEndpoints),
 		LinuxDoOAuthEnabled:              settings.LinuxDoOAuthEnabled,
@@ -471,6 +484,16 @@ func (s *SettingService) UpdateSettings(ctx context.Context, settings *SystemSet
 	updates[SettingKeyHideCcsImportButton] = strconv.FormatBool(settings.HideCcsImportButton)
 	updates[SettingKeyPurchaseSubscriptionEnabled] = strconv.FormatBool(settings.PurchaseSubscriptionEnabled)
 	updates[SettingKeyPurchaseSubscriptionURL] = strings.TrimSpace(settings.PurchaseSubscriptionURL)
+	tableDefaultPageSize, tablePageSizeOptions := normalizeTablePreferences(
+		settings.TableDefaultPageSize,
+		settings.TablePageSizeOptions,
+	)
+	updates[SettingKeyTableDefaultPageSize] = strconv.Itoa(tableDefaultPageSize)
+	tablePageSizeOptionsJSON, err := json.Marshal(tablePageSizeOptions)
+	if err != nil {
+		return fmt.Errorf("marshal table page size options: %w", err)
+	}
+	updates[SettingKeyTablePageSizeOptions] = string(tablePageSizeOptionsJSON)
 	updates[SettingKeyCustomMenuItems] = settings.CustomMenuItems
 	updates[SettingKeyCustomEndpoints] = settings.CustomEndpoints
 
@@ -824,6 +847,8 @@ func (s *SettingService) InitializeDefaultSettings(ctx context.Context) error {
 		SettingKeySiteLogo:                         "",
 		SettingKeyPurchaseSubscriptionEnabled:      "false",
 		SettingKeyPurchaseSubscriptionURL:          "",
+		SettingKeyTableDefaultPageSize:             "20",
+		SettingKeyTablePageSizeOptions:             "[10,20,50,100]",
 		SettingKeyCustomMenuItems:                  "[]",
 		SettingKeyCustomEndpoints:                  "[]",
 		SettingKeyDefaultConcurrency:               strconv.Itoa(s.cfg.Default.UserConcurrency),
@@ -893,6 +918,10 @@ func (s *SettingService) parseSettings(settings map[string]string) *SystemSettin
 		CustomEndpoints:                  settings[SettingKeyCustomEndpoints],
 		BackendModeEnabled:               settings[SettingKeyBackendModeEnabled] == "true",
 	}
+	result.TableDefaultPageSize, result.TablePageSizeOptions = parseTablePreferences(
+		settings[SettingKeyTableDefaultPageSize],
+		settings[SettingKeyTablePageSizeOptions],
+	)
 
 	// 解析整数类型
 	if port, err := strconv.Atoi(settings[SettingKeySMTPPort]); err == nil {
@@ -1036,6 +1065,59 @@ func parseDefaultSubscriptions(raw string) []DefaultSubscriptionSetting {
 	return normalized
 }
 
+func parseTablePreferences(defaultPageSizeRaw, optionsRaw string) (int, []int) {
+	defaultPageSize := 20
+	if v, err := strconv.Atoi(strings.TrimSpace(defaultPageSizeRaw)); err == nil {
+		defaultPageSize = v
+	}
+
+	var options []int
+	if strings.TrimSpace(optionsRaw) != "" {
+		_ = json.Unmarshal([]byte(optionsRaw), &options)
+	}
+
+	return normalizeTablePreferences(defaultPageSize, options)
+}
+
+func normalizeTablePreferences(defaultPageSize int, options []int) (int, []int) {
+	const minPageSize = 5
+	const maxPageSize = 1000
+	const fallbackPageSize = 20
+
+	seen := make(map[int]struct{}, len(options))
+	normalizedOptions := make([]int, 0, len(options))
+	for _, option := range options {
+		if option < minPageSize || option > maxPageSize {
+			continue
+		}
+		if _, ok := seen[option]; ok {
+			continue
+		}
+		seen[option] = struct{}{}
+		normalizedOptions = append(normalizedOptions, option)
+	}
+	sort.Ints(normalizedOptions)
+
+	if defaultPageSize < minPageSize || defaultPageSize > maxPageSize {
+		defaultPageSize = fallbackPageSize
+	}
+
+	if len(normalizedOptions) == 0 {
+		normalizedOptions = []int{10, 20, 50}
+	}
+
+	return defaultPageSize, normalizedOptions
+}
+
+func containsInt(values []int, target int) bool {
+	for _, value := range values {
+		if value == target {
+			return true
+		}
+	}
+	return false
+}
+
 // getStringOrDefault 获取字符串值或默认值
 func (s *SettingService) getStringOrDefault(settings map[string]string, key, defaultValue string) string {
 	if value, ok := settings[key]; ok && value != "" {

backend/internal/service/setting_service_public_test.go

@@ -62,3 +62,18 @@ func TestSettingService_GetPublicSettings_ExposesRegistrationEmailSuffixWhitelis
 	require.NoError(t, err)
 	require.Equal(t, []string{"@example.com", "@foo.bar"}, settings.RegistrationEmailSuffixWhitelist)
 }
+
+func TestSettingService_GetPublicSettings_ExposesTablePreferences(t *testing.T) {
+	repo := &settingPublicRepoStub{
+		values: map[string]string{
+			SettingKeyTableDefaultPageSize:  "50",
+			SettingKeyTablePageSizeOptions: "[20,50,100]",
+		},
+	}
+	svc := NewSettingService(repo, &config.Config{})
+
+	settings, err := svc.GetPublicSettings(context.Background())
+	require.NoError(t, err)
+	require.Equal(t, 50, settings.TableDefaultPageSize)
+	require.Equal(t, []int{20, 50, 100}, settings.TablePageSizeOptions)
+}

backend/internal/service/setting_service_update_test.go

@@ -202,3 +202,24 @@ func TestParseDefaultSubscriptions_NormalizesValues(t *testing.T) {
 		{GroupID: 12, ValidityDays: MaxValidityDays},
 	}, got)
 }
+
+func TestSettingService_UpdateSettings_TablePreferences(t *testing.T) {
+	repo := &settingUpdateRepoStub{}
+	svc := NewSettingService(repo, &config.Config{})
+
+	err := svc.UpdateSettings(context.Background(), &SystemSettings{
+		TableDefaultPageSize:  50,
+		TablePageSizeOptions: []int{20, 50, 100},
+	})
+	require.NoError(t, err)
+	require.Equal(t, "50", repo.updates[SettingKeyTableDefaultPageSize])
+	require.Equal(t, "[20,50,100]", repo.updates[SettingKeyTablePageSizeOptions])
+
+	err = svc.UpdateSettings(context.Background(), &SystemSettings{
+		TableDefaultPageSize:  1000,
+		TablePageSizeOptions: []int{20, 100},
+	})
+	require.NoError(t, err)
+	require.Equal(t, "1000", repo.updates[SettingKeyTableDefaultPageSize])
+	require.Equal(t, "[20,100]", repo.updates[SettingKeyTablePageSizeOptions])
+}

backend/internal/service/settings_view.go

@@ -41,6 +41,8 @@ type SystemSettings struct {
 	HideCcsImportButton         bool
 	PurchaseSubscriptionEnabled bool
 	PurchaseSubscriptionURL     string
+	TableDefaultPageSize        int
+	TablePageSizeOptions        []int
 	CustomMenuItems             string // JSON array of custom menu items
 	CustomEndpoints             string // JSON array of custom endpoints
 
@@ -107,6 +109,8 @@ type PublicSettings struct {
 
 	PurchaseSubscriptionEnabled bool
 	PurchaseSubscriptionURL     string
+	TableDefaultPageSize        int
+	TablePageSizeOptions        []int
 	CustomMenuItems             string // JSON array of custom menu items
 	CustomEndpoints             string // JSON array of custom endpoints
 

frontend/src/api/admin/settings.ts

@@ -40,6 +40,8 @@ export interface SystemSettings {
   hide_ccs_import_button: boolean
   purchase_subscription_enabled: boolean
   purchase_subscription_url: string
+  table_default_page_size: number
+  table_page_size_options: number[]
   backend_mode_enabled: boolean
   custom_menu_items: CustomMenuItem[]
   custom_endpoints: CustomEndpoint[]
@@ -114,6 +116,8 @@ export interface UpdateSettingsRequest {
   hide_ccs_import_button?: boolean
   purchase_subscription_enabled?: boolean
   purchase_subscription_url?: string
+  table_default_page_size?: number
+  table_page_size_options?: number[]
   backend_mode_enabled?: boolean
   custom_menu_items?: CustomMenuItem[]
   custom_endpoints?: CustomEndpoint[]

frontend/src/components/common/Pagination.vue

@@ -123,6 +123,7 @@ import { useI18n } from 'vue-i18n'
 import Icon from '@/components/icons/Icon.vue'
 import Select from './Select.vue'
 import { setPersistedPageSize } from '@/composables/usePersistedPageSize'
+import { getConfiguredTablePageSizeOptions, normalizeTablePageSize } from '@/utils/tablePreferences'
 
 const { t } = useI18n()
 
@@ -141,7 +142,7 @@ interface Emits {
 }
 
 const props = withDefaults(defineProps<Props>(), {
-  pageSizeOptions: () => [10, 20, 50, 100],
+  pageSizeOptions: () => getConfiguredTablePageSizeOptions(),
   showPageSizeSelector: true,
   showJump: false
 })
@@ -161,7 +162,14 @@ const toItem = computed(() => {
 })
 
 const pageSizeSelectOptions = computed(() => {
-  return props.pageSizeOptions.map((size) => ({
+  const options = Array.from(
+    new Set([
+      ...getConfiguredTablePageSizeOptions(),
+      normalizeTablePageSize(props.pageSize)
+    ])
+  ).sort((a, b) => a - b)
+
+  return options.map((size) => ({
     value: size,
     label: String(size)
   }))
@@ -216,7 +224,7 @@ const goToPage = (newPage: number) => {
 
 const handlePageSizeChange = (value: string | number | boolean | null) => {
   if (value === null || typeof value === 'boolean') return
-  const newPageSize = typeof value === 'string' ? parseInt(value) : value
+  const newPageSize = normalizeTablePageSize(typeof value === 'string' ? parseInt(value, 10) : value)
   setPersistedPageSize(newPageSize)
   emit('update:pageSize', newPageSize)
 }

frontend/src/composables/usePersistedPageSize.ts

+import { getConfiguredTableDefaultPageSize, normalizeTablePageSize } from '@/utils/tablePreferences'
+
 const STORAGE_KEY = 'table-page-size'
-const DEFAULT_PAGE_SIZE = 20
+const SOURCE_KEY = 'table-page-size-source'
 
 /**
  * 从 localStorage 读取/写入 pageSize
  * 全局共享一个 key，所有表格统一偏好
  */
-export function getPersistedPageSize(fallback = DEFAULT_PAGE_SIZE): number {
+export function getPersistedPageSize(fallback = getConfiguredTableDefaultPageSize()): number {
   try {
     const stored = localStorage.getItem(STORAGE_KEY)
     if (stored) {
-      const parsed = Number(stored)
-      if (Number.isFinite(parsed) && parsed > 0) return parsed
+      return normalizeTablePageSize(stored)
     }
   } catch {
     // localStorage 不可用（隐私模式等）
   }
-  return fallback
+  return normalizeTablePageSize(fallback)
 }
 
 export function setPersistedPageSize(size: number): void {
   try {
-    localStorage.setItem(STORAGE_KEY, String(size))
+    localStorage.setItem(STORAGE_KEY, String(normalizeTablePageSize(size)))
+    localStorage.setItem(SOURCE_KEY, 'user')
+  } catch {
+    // 静默失败
+  }
+}
+
+export function syncPersistedPageSizeWithSystemDefault(defaultSize = getConfiguredTableDefaultPageSize()): void {
+  try {
+    const normalizedDefault = normalizeTablePageSize(defaultSize)
+    const stored = localStorage.getItem(STORAGE_KEY)
+    const source = localStorage.getItem(SOURCE_KEY)
+    const normalizedStored = stored ? normalizeTablePageSize(stored) : null
+
+    if ((source === 'user' || (source === null && stored !== null)) && stored) {
+      localStorage.setItem(STORAGE_KEY, String(normalizedStored ?? normalizedDefault))
+      localStorage.setItem(SOURCE_KEY, 'user')
+      return
+    }
+
+    localStorage.setItem(STORAGE_KEY, String(normalizedDefault))
+    localStorage.setItem(SOURCE_KEY, 'system')
   } catch {
     // 静默失败
   }

frontend/src/stores/__tests__/app.spec.ts

 import { describe, it, expect, vi, beforeEach, afterEach } from 'vitest'
 import { setActivePinia, createPinia } from 'pinia'
 import { useAppStore } from '@/stores/app'
+import { getPublicSettings } from '@/api/auth'
 
 // Mock API 模块
 vi.mock('@/api/admin/system', () => ({
@@ -15,12 +16,14 @@ describe('useAppStore', () => {
   beforeEach(() => {
     setActivePinia(createPinia())
     vi.useFakeTimers()
+    localStorage.clear()
     // 清除 window.__APP_CONFIG__
     delete (window as any).__APP_CONFIG__
   })
 
   afterEach(() => {
     vi.useRealTimers()
+    localStorage.clear()
   })
 
   // --- Toast 消息管理 ---
@@ -291,5 +294,120 @@ describe('useAppStore', () => {
       expect(store.publicSettingsLoaded).toBe(false)
       expect(store.cachedPublicSettings).toBeNull()
     })
+
+    it('fetchPublicSettings(force) 会同步更新运行时注入配置', async () => {
+      vi.mocked(getPublicSettings).mockResolvedValue({
+        registration_enabled: false,
+        email_verify_enabled: false,
+        registration_email_suffix_whitelist: [],
+        promo_code_enabled: true,
+        password_reset_enabled: false,
+        invitation_code_enabled: false,
+        turnstile_enabled: false,
+        turnstile_site_key: '',
+        site_name: 'Updated Site',
+        site_logo: '',
+        site_subtitle: '',
+        api_base_url: '',
+        contact_info: '',
+        doc_url: '',
+        home_content: '',
+        hide_ccs_import_button: false,
+        purchase_subscription_enabled: false,
+        purchase_subscription_url: '',
+        table_default_page_size: 1000,
+        table_page_size_options: [20, 100, 1000],
+        custom_menu_items: [],
+        custom_endpoints: [],
+        linuxdo_oauth_enabled: false,
+        backend_mode_enabled: false,
+        version: '1.0.0'
+      })
+
+      const store = useAppStore()
+      await store.fetchPublicSettings(true)
+
+      expect((window as any).__APP_CONFIG__.table_default_page_size).toBe(1000)
+      expect((window as any).__APP_CONFIG__.table_page_size_options).toEqual([20, 100, 1000])
+      expect(localStorage.getItem('table-page-size')).toBe('1000')
+      expect(localStorage.getItem('table-page-size-source')).toBe('system')
+    })
+
+    it('fetchPublicSettings(force) 保留用户显式选择的分页大小', async () => {
+      localStorage.setItem('table-page-size', '100')
+      localStorage.setItem('table-page-size-source', 'user')
+
+      vi.mocked(getPublicSettings).mockResolvedValue({
+        registration_enabled: false,
+        email_verify_enabled: false,
+        registration_email_suffix_whitelist: [],
+        promo_code_enabled: true,
+        password_reset_enabled: false,
+        invitation_code_enabled: false,
+        turnstile_enabled: false,
+        turnstile_site_key: '',
+        site_name: 'Updated Site',
+        site_logo: '',
+        site_subtitle: '',
+        api_base_url: '',
+        contact_info: '',
+        doc_url: '',
+        home_content: '',
+        hide_ccs_import_button: false,
+        purchase_subscription_enabled: false,
+        purchase_subscription_url: '',
+        table_default_page_size: 1000,
+        table_page_size_options: [20, 50, 1000],
+        custom_menu_items: [],
+        custom_endpoints: [],
+        linuxdo_oauth_enabled: false,
+        backend_mode_enabled: false,
+        version: '1.0.0'
+      })
+
+      const store = useAppStore()
+      await store.fetchPublicSettings(true)
+
+      expect(localStorage.getItem('table-page-size')).toBe('1000')
+      expect(localStorage.getItem('table-page-size-source')).toBe('user')
+    })
+
+    it('fetchPublicSettings(force) 保留旧版本未标记来源的分页偏好', async () => {
+      localStorage.setItem('table-page-size', '50')
+
+      vi.mocked(getPublicSettings).mockResolvedValue({
+        registration_enabled: false,
+        email_verify_enabled: false,
+        registration_email_suffix_whitelist: [],
+        promo_code_enabled: true,
+        password_reset_enabled: false,
+        invitation_code_enabled: false,
+        turnstile_enabled: false,
+        turnstile_site_key: '',
+        site_name: 'Updated Site',
+        site_logo: '',
+        site_subtitle: '',
+        api_base_url: '',
+        contact_info: '',
+        doc_url: '',
+        home_content: '',
+        hide_ccs_import_button: false,
+        purchase_subscription_enabled: false,
+        purchase_subscription_url: '',
+        table_default_page_size: 1000,
+        table_page_size_options: [20, 50, 1000],
+        custom_menu_items: [],
+        custom_endpoints: [],
+        linuxdo_oauth_enabled: false,
+        backend_mode_enabled: false,
+        version: '1.0.0'
+      })
+
+      const store = useAppStore()
+      await store.fetchPublicSettings(true)
+
+      expect(localStorage.getItem('table-page-size')).toBe('50')
+      expect(localStorage.getItem('table-page-size-source')).toBe('user')
+    })
   })
 })

frontend/src/stores/app.ts

@@ -12,6 +12,7 @@ import {
   type ReleaseInfo
 } from '@/api/admin/system'
 import { getPublicSettings as fetchPublicSettingsAPI } from '@/api/auth'
+import { syncPersistedPageSizeWithSystemDefault } from '@/composables/usePersistedPageSize'
 
 export const useAppStore = defineStore('app', () => {
   // ==================== State ====================
@@ -284,6 +285,10 @@ export const useAppStore = defineStore('app', () => {
    * Apply settings to store state (internal helper to avoid code duplication)
    */
   function applySettings(config: PublicSettings): void {
+    if (typeof window !== 'undefined') {
+      window.__APP_CONFIG__ = { ...config }
+    }
+    syncPersistedPageSizeWithSystemDefault(config.table_default_page_size)
     cachedPublicSettings.value = config
     siteName.value = config.site_name || 'Sub2API'
     siteLogo.value = config.site_logo || ''
@@ -329,6 +334,8 @@ export const useAppStore = defineStore('app', () => {
         hide_ccs_import_button: false,
         purchase_subscription_enabled: false,
         purchase_subscription_url: '',
+        table_default_page_size: 20,
+        table_page_size_options: [10, 20, 50],
         custom_menu_items: [],
         custom_endpoints: [],
         linuxdo_oauth_enabled: false,

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

+import { afterEach, describe, expect, it } from 'vitest'
+
+import {
+  DEFAULT_TABLE_PAGE_SIZE,
+  DEFAULT_TABLE_PAGE_SIZE_OPTIONS,
+  getConfiguredTableDefaultPageSize,
+  getConfiguredTablePageSizeOptions,
+  normalizeTablePageSize
+} from '@/utils/tablePreferences'
+
+describe('tablePreferences', () => {
+  afterEach(() => {
+    delete window.__APP_CONFIG__
+  })
+
+  it('returns built-in defaults when app config is missing', () => {
+    expect(getConfiguredTableDefaultPageSize()).toBe(DEFAULT_TABLE_PAGE_SIZE)
+    expect(getConfiguredTablePageSizeOptions()).toEqual(DEFAULT_TABLE_PAGE_SIZE_OPTIONS)
+  })
+
+  it('uses configured defaults when app config is valid', () => {
+    window.__APP_CONFIG__ = {
+      table_default_page_size: 50,
+      table_page_size_options: [20, 50, 100]
+    } as any
+
+    expect(getConfiguredTableDefaultPageSize()).toBe(50)
+    expect(getConfiguredTablePageSizeOptions()).toEqual([20, 50, 100])
+  })
+
+  it('allows default page size outside selectable options', () => {
+    window.__APP_CONFIG__ = {
+      table_default_page_size: 1000,
+      table_page_size_options: [20, 50, 100]
+    } as any
+
+    expect(getConfiguredTableDefaultPageSize()).toBe(1000)
+    expect(getConfiguredTablePageSizeOptions()).toEqual([20, 50, 100])
+    expect(normalizeTablePageSize(1000)).toBe(100)
+    expect(normalizeTablePageSize(35)).toBe(50)
+  })
+
+  it('normalizes invalid options without rewriting the configured default itself', () => {
+    window.__APP_CONFIG__ = {
+      table_default_page_size: 35,
+      table_page_size_options: [1001, 50, 10, 10, 2, 0]
+    } as any
+
+    expect(getConfiguredTableDefaultPageSize()).toBe(35)
+    expect(getConfiguredTablePageSizeOptions()).toEqual([10, 50])
+    expect(normalizeTablePageSize(undefined)).toBe(50)
+  })
+
+  it('normalizes page size against configured options by rounding up', () => {
+    window.__APP_CONFIG__ = {
+      table_default_page_size: 20,
+      table_page_size_options: [20, 50, 1000]
+    } as any
+
+    expect(normalizeTablePageSize(20)).toBe(20)
+    expect(normalizeTablePageSize(30)).toBe(50)
+    expect(normalizeTablePageSize(100)).toBe(1000)
+    expect(normalizeTablePageSize(1500)).toBe(1000)
+    expect(normalizeTablePageSize(undefined)).toBe(20)
+  })
+
+  it('keeps built-in selectable defaults at 10, 20, 50', () => {
+    window.__APP_CONFIG__ = {
+      table_default_page_size: 1000
+    } as any
+
+    expect(getConfiguredTablePageSizeOptions()).toEqual([10, 20, 50])
+  })
+})

frontend/src/utils/tablePreferences.ts

+const MIN_TABLE_PAGE_SIZE = 5
+const MAX_TABLE_PAGE_SIZE = 1000
+
+export const DEFAULT_TABLE_PAGE_SIZE = 20
+export const DEFAULT_TABLE_PAGE_SIZE_OPTIONS = [10, 20, 50]
+
+const sanitizePageSize = (value: unknown): number | null => {
+  const size = Number(value)
+  if (!Number.isInteger(size)) return null
+  if (size < MIN_TABLE_PAGE_SIZE || size > MAX_TABLE_PAGE_SIZE) return null
+  return size
+}
+
+const parsePageSizeForSelection = (value: unknown): number | null => {
+  const size = Number(value)
+  if (!Number.isInteger(size)) return null
+  if (size < MIN_TABLE_PAGE_SIZE) return null
+  return size
+}
+
+const getInjectedAppConfig = () => {
+  if (typeof window === 'undefined') return null
+  return window.__APP_CONFIG__ ?? null
+}
+
+const getSanitizedConfiguredOptions = (): number[] => {
+  const configured = getInjectedAppConfig()?.table_page_size_options
+  if (!Array.isArray(configured)) return []
+
+  return Array.from(
+    new Set(
+      configured
+        .map((value) => sanitizePageSize(value))
+        .filter((value): value is number => value !== null)
+    )
+  ).sort((a, b) => a - b)
+}
+
+const normalizePageSizeToOptions = (value: number, options: number[]): number => {
+  for (const option of options) {
+    if (option >= value) {
+      return option
+    }
+  }
+  return options[options.length - 1]
+}
+
+export const getConfiguredTableDefaultPageSize = (): number => {
+  const configured = sanitizePageSize(getInjectedAppConfig()?.table_default_page_size)
+  if (configured === null) {
+    return DEFAULT_TABLE_PAGE_SIZE
+  }
+  return configured
+}
+
+export const getConfiguredTablePageSizeOptions = (): number[] => {
+  const unique = getSanitizedConfiguredOptions()
+  if (unique.length === 0) {
+    return [...DEFAULT_TABLE_PAGE_SIZE_OPTIONS]
+  }
+
+  return unique.length > 0 ? unique : [...DEFAULT_TABLE_PAGE_SIZE_OPTIONS]
+}
+
+export const normalizeTablePageSize = (value: unknown): number => {
+  const normalized = parsePageSizeForSelection(value)
+  const defaultSize = getConfiguredTableDefaultPageSize()
+  const options = getConfiguredTablePageSizeOptions()
+  if (normalized !== null) {
+    return normalizePageSizeToOptions(normalized, options)
+  }
+  return normalizePageSizeToOptions(defaultSize, options)
+}

frontend/src/views/admin/SettingsView.vue

@@ -1468,6 +1468,48 @@
               </p>
             </div>
 
+            <!-- Global Table Preferences -->
+            <div class="border-t border-gray-100 pt-4 dark:border-dark-700">
+              <h3 class="text-sm font-medium text-gray-900 dark:text-white">
+                {{ t('admin.settings.site.tablePreferencesTitle') }}
+              </h3>
+              <p class="mt-1 text-xs text-gray-500 dark:text-gray-400">
+                {{ t('admin.settings.site.tablePreferencesDescription') }}
+              </p>
+              <div class="mt-4 grid grid-cols-1 gap-6 md:grid-cols-2">
+                <div>
+                  <label class="mb-2 block text-sm font-medium text-gray-700 dark:text-gray-300">
+                    {{ t('admin.settings.site.tableDefaultPageSize') }}
+                  </label>
+                  <input
+                    v-model.number="form.table_default_page_size"
+                    type="number"
+                    min="5"
+                    max="1000"
+                    step="1"
+                    class="input w-40"
+                  />
+                  <p class="mt-1.5 text-xs text-gray-500 dark:text-gray-400">
+                    {{ t('admin.settings.site.tableDefaultPageSizeHint') }}
+                  </p>
+                </div>
+                <div>
+                  <label class="mb-2 block text-sm font-medium text-gray-700 dark:text-gray-300">
+                    {{ t('admin.settings.site.tablePageSizeOptions') }}
+                  </label>
+                  <input
+                    v-model="tablePageSizeOptionsInput"
+                    type="text"
+                    class="input font-mono text-sm"
+                    :placeholder="t('admin.settings.site.tablePageSizeOptionsPlaceholder')"
+                  />
+                  <p class="mt-1.5 text-xs text-gray-500 dark:text-gray-400">
+                    {{ t('admin.settings.site.tablePageSizeOptionsHint') }}
+                  </p>
+                </div>
+              </div>
+            </div>
+
             <!-- Custom Endpoints -->
             <div>
               <label class="mb-2 block text-sm font-medium text-gray-700 dark:text-gray-300">
@@ -2125,6 +2167,7 @@ const smtpPasswordManuallyEdited = ref(false)
 const testEmailAddress = ref('')
 const registrationEmailSuffixWhitelistTags = ref<string[]>([])
 const registrationEmailSuffixWhitelistDraft = ref('')
+const tablePageSizeOptionsInput = ref('10, 20, 50')
 
 // Admin API Key 状态
 const adminApiKeyLoading = ref(true)
@@ -2179,6 +2222,10 @@ const betaPolicyForm = reactive({
   }>
 })
 
+const tablePageSizeMin = 5
+const tablePageSizeMax = 1000
+const tablePageSizeDefault = 20
+
 interface DefaultSubscriptionGroupOption {
   value: number
   label: string
@@ -2218,6 +2265,8 @@ const form = reactive<SettingsForm>({
   hide_ccs_import_button: false,
   purchase_subscription_enabled: false,
   purchase_subscription_url: '',
+  table_default_page_size: tablePageSizeDefault,
+  table_page_size_options: [10, 20, 50],
   custom_menu_items: [] as Array<{id: string; label: string; icon_svg: string; url: string; visibility: 'user' | 'admin'; sort_order: number}>,
   custom_endpoints: [] as Array<{name: string; endpoint: string; description: string}>,
   frontend_url: '',
@@ -2402,6 +2451,35 @@ function removeEndpoint(index: number) {
   form.custom_endpoints.splice(index, 1)
 }
 
+function formatTablePageSizeOptions(options: number[]): string {
+  return options.join(', ')
+}
+
+function parseTablePageSizeOptionsInput(raw: string): number[] | null {
+  const tokens = raw
+    .split(',')
+    .map((token) => token.trim())
+    .filter((token) => token.length > 0)
+
+  if (tokens.length === 0) {
+    return null
+  }
+
+  const parsed = tokens.map((token) => Number(token))
+  if (parsed.some((value) => !Number.isInteger(value))) {
+    return null
+  }
+
+  const deduped = Array.from(new Set(parsed)).sort((a, b) => a - b)
+  if (
+    deduped.some((value) => value < tablePageSizeMin || value > tablePageSizeMax)
+  ) {
+    return null
+  }
+
+  return deduped
+}
+
 async function loadSettings() {
   loading.value = true
   loadFailed.value = false
@@ -2420,6 +2498,9 @@ async function loadSettings() {
     registrationEmailSuffixWhitelistTags.value = normalizeRegistrationEmailSuffixDomains(
       settings.registration_email_suffix_whitelist
     )
+    tablePageSizeOptionsInput.value = formatTablePageSizeOptions(
+      Array.isArray(settings.table_page_size_options) ? settings.table_page_size_options : [10, 20, 50]
+    )
     registrationEmailSuffixWhitelistDraft.value = ''
     form.smtp_password = ''
     smtpPasswordManuallyEdited.value = false
@@ -2465,6 +2546,37 @@ function removeDefaultSubscription(index: number) {
 async function saveSettings() {
   saving.value = true
   try {
+    const normalizedTableDefaultPageSize = Math.floor(Number(form.table_default_page_size))
+    if (
+      !Number.isInteger(normalizedTableDefaultPageSize) ||
+      normalizedTableDefaultPageSize < tablePageSizeMin ||
+      normalizedTableDefaultPageSize > tablePageSizeMax
+    ) {
+      appStore.showError(
+        t('admin.settings.site.tableDefaultPageSizeRangeError', {
+          min: tablePageSizeMin,
+          max: tablePageSizeMax
+        })
+      )
+      return
+    }
+
+    const normalizedTablePageSizeOptions = parseTablePageSizeOptionsInput(
+      tablePageSizeOptionsInput.value
+    )
+    if (!normalizedTablePageSizeOptions) {
+      appStore.showError(
+        t('admin.settings.site.tablePageSizeOptionsFormatError', {
+          min: tablePageSizeMin,
+          max: tablePageSizeMax
+        })
+      )
+      return
+    }
+
+    form.table_default_page_size = normalizedTableDefaultPageSize
+    form.table_page_size_options = normalizedTablePageSizeOptions
+
     const normalizedDefaultSubscriptions = form.default_subscriptions
       .filter((item) => item.group_id > 0 && item.validity_days > 0)
       .map((item: DefaultSubscriptionSetting) => ({
@@ -2542,6 +2654,8 @@ async function saveSettings() {
       hide_ccs_import_button: form.hide_ccs_import_button,
       purchase_subscription_enabled: form.purchase_subscription_enabled,
       purchase_subscription_url: form.purchase_subscription_url,
+      table_default_page_size: form.table_default_page_size,
+      table_page_size_options: form.table_page_size_options,
       custom_menu_items: form.custom_menu_items,
       custom_endpoints: form.custom_endpoints,
       frontend_url: form.frontend_url,
@@ -2578,6 +2692,9 @@ async function saveSettings() {
     registrationEmailSuffixWhitelistTags.value = normalizeRegistrationEmailSuffixDomains(
       updated.registration_email_suffix_whitelist
     )
+    tablePageSizeOptionsInput.value = formatTablePageSizeOptions(
+      Array.isArray(updated.table_page_size_options) ? updated.table_page_size_options : [10, 20, 50]
+    )
     registrationEmailSuffixWhitelistDraft.value = ''
     form.smtp_password = ''
     smtpPasswordManuallyEdited.value = false