feat(sub): add template variables to subscription metadata (#6163)

frontend/src/components/form/RemarkTemplateField.tsx

@@ -1,10 +1,11 @@
 import { useRef } from 'react';
 import { Button, Input, Popover, Tooltip } from 'antd';
 import type { InputRef } from 'antd';
+import type { TextAreaRef } from 'antd/es/input/TextArea';
 import { CodeOutlined } from '@ant-design/icons';
 import { useTranslation } from 'react-i18next';
 
-import { hasRemarkTokens, previewRemark, wrapToken } from '@/lib/remark/remarkVariables';
+import { hasRemarkTokens, previewRemark, SUBSCRIPTION_METADATA_VARIABLES, wrapToken } from '@/lib/remark/remarkVariables';
 import RemarkVarPicker from './RemarkVarPicker';
 
 interface RemarkTemplateFieldProps {
@@ -13,19 +14,31 @@ interface RemarkTemplateFieldProps {
   onChange?: (value: string) => void;
   maxLength?: number;
   placeholder?: string;
+  multiline?: boolean;
+  rows?: number;
+  metadataOnly?: boolean;
 }
 
 /**
  * RemarkTemplateField is a text input augmented with a {{VAR}} template picker
  * (insert-at-caret) and a live, sample-based preview of the expanded result.
- * Used for the global subscription Remark Template.
+ * Used for subscription text fields that support Remark Template variables.
  */
-export default function RemarkTemplateField({ value = '', onChange, maxLength, placeholder }: RemarkTemplateFieldProps) {
+export default function RemarkTemplateField({ value = '', onChange, maxLength, placeholder, multiline = false, rows, metadataOnly = false }: RemarkTemplateFieldProps) {
   const { t } = useTranslation();
   const inputRef = useRef<InputRef>(null);
+  const textAreaRef = useRef<TextAreaRef>(null);
+  const variables = metadataOnly ? SUBSCRIPTION_METADATA_VARIABLES : undefined;
+
+  function getTextElement() {
+    if (multiline) {
+      return textAreaRef.current?.resizableTextArea?.textArea ?? null;
+    }
+    return inputRef.current?.input ?? null;
+  }
 
   function insertToken(token: string) {
-    const el = inputRef.current?.input;
+    const el = getTextElement();
     const start = el?.selectionStart ?? value.length;
     const end = el?.selectionEnd ?? value.length;
     const insert = wrapToken(token);
@@ -39,31 +52,47 @@ export default function RemarkTemplateField({ value = '', onChange, maxLength, p
     });
   }
 
+  const pickerButton = (
+    <Popover
+      content={<RemarkVarPicker onPick={insertToken} variables={variables} />}
+      trigger="click"
+      placement="bottomRight"
+      title={t('pages.hosts.remarkVars.title')}
+    >
+      <Tooltip title={t('pages.hosts.remarkVars.title')}>
+        <Button type="text" size="small" icon={<CodeOutlined />} aria-label={t('pages.hosts.remarkVars.title')} style={{ marginInlineEnd: -7 }} />
+      </Tooltip>
+    </Popover>
+  );
+
   return (
     <div>
-      <Input
-        ref={inputRef}
-        value={value}
-        maxLength={maxLength}
-        placeholder={placeholder}
-        onChange={(e) => onChange?.(e.target.value)}
-        suffix={
-          <Popover
-            content={<RemarkVarPicker onPick={insertToken} />}
-            trigger="click"
-            placement="bottomRight"
-            title={t('pages.hosts.remarkVars.title')}
-          >
-            <Tooltip title={t('pages.hosts.remarkVars.title')}>
-              <Button type="text" size="small" icon={<CodeOutlined />} aria-label={t('pages.hosts.remarkVars.title')} style={{ marginInlineEnd: -7 }} />
-            </Tooltip>
-          </Popover>
-        }
-      />
+      {multiline ? (
+        <div style={{ display: 'flex', gap: 8, alignItems: 'flex-start' }}>
+          <Input.TextArea
+            ref={textAreaRef}
+            value={value}
+            maxLength={maxLength}
+            placeholder={placeholder}
+            rows={rows}
+            onChange={(e) => onChange?.(e.target.value)}
+          />
+          {pickerButton}
+        </div>
+      ) : (
+        <Input
+          ref={inputRef}
+          value={value}
+          maxLength={maxLength}
+          placeholder={placeholder}
+          onChange={(e) => onChange?.(e.target.value)}
+          suffix={pickerButton}
+        />
+      )}
       {hasRemarkTokens(value) && (
         <div style={{ fontSize: 12, marginTop: 4, opacity: 0.7 }}>
           {t('pages.hosts.remarkVars.preview')}:{' '}
-          <span style={{ fontFamily: 'monospace' }}>{previewRemark(value) || '—'}</span>
+          <span style={{ fontFamily: 'monospace' }}>{previewRemark(value, variables, metadataOnly) || '—'}</span>
         </div>
       )}
     </div>

frontend/src/components/form/RemarkVarPicker.tsx

@@ -2,31 +2,33 @@ import { Tag, Tooltip, Typography } from 'antd';
 import { useTranslation } from 'react-i18next';
 
 import { REMARK_VARIABLES, REMARK_VAR_GROUPS, wrapToken } from '@/lib/remark/remarkVariables';
+import type { RemarkVar } from '@/lib/remark/remarkVariables';
 import { activateOnKey } from '@/utils/a11y';
 
 interface RemarkVarPickerProps {
   /** Called with the bare token (e.g. "EMAIL") when a chip is clicked. */
   onPick: (token: string) => void;
+  variables?: RemarkVar[];
 }
 
 /**
  * RemarkVarPicker is the grouped, tooltipped chip list of {{VAR}} tokens used by
  * the global remark-template field.
  */
-export default function RemarkVarPicker({ onPick }: RemarkVarPickerProps) {
+export default function RemarkVarPicker({ onPick, variables = REMARK_VARIABLES }: RemarkVarPickerProps) {
   const { t } = useTranslation();
   return (
     <div style={{ maxWidth: 460, maxHeight: 'min(70vh, 640px)', overflowY: 'auto' }}>
       <Typography.Paragraph type="secondary" style={{ fontSize: 12, marginBottom: 8 }}>
         {t('pages.hosts.remarkVars.intro')}
       </Typography.Paragraph>
-      {REMARK_VAR_GROUPS.map((group) => (
+      {REMARK_VAR_GROUPS.filter((group) => variables.some((v) => v.group === group)).map((group) => (
         <div key={group} style={{ marginBottom: 8 }}>
           <div style={{ fontSize: 11, fontWeight: 600, textTransform: 'uppercase', opacity: 0.6, marginBottom: 4 }}>
             {t(`pages.hosts.remarkVars.groups.${group}`)}
           </div>
           <div style={{ display: 'flex', flexWrap: 'wrap', gap: 4 }}>
-            {REMARK_VARIABLES.filter((v) => v.group === group).map((v) => (
+            {variables.filter((v) => v.group === group).map((v) => (
               <Tooltip key={v.token} title={t(`pages.hosts.remarkVars.desc${v.token}`)}>
                 <Tag
                   role="button"

frontend/src/lib/remark/remarkVariables.ts

@@ -51,6 +51,14 @@ export const REMARK_VARIABLES: RemarkVar[] = [
   { token: 'SECURITY', group: 'connection', sample: 'TLS' },
 ];
 
+export const SUBSCRIPTION_METADATA_VARIABLES: RemarkVar[] = REMARK_VARIABLES.filter((v) => (
+  v.token === 'EMAIL'
+  || v.token === 'ID'
+  || v.token === 'SHORT_ID'
+  || v.token === 'TELEGRAM_ID'
+  || v.token === 'SUB_ID'
+));
+
 const SAMPLE_BY_TOKEN: Record<string, string> = Object.fromEntries(
   REMARK_VARIABLES.map((v) => [v.token, v.sample]),
 );
@@ -70,9 +78,14 @@ export function hasRemarkTokens(template: string): boolean {
 /**
  * previewRemark renders a template against the sample values, mirroring the
  * backend substitution closely enough for an at-a-glance preview. Unknown
- * tokens collapse to empty, just like the server.
+ * tokens collapse to empty by default; metadata fields can keep unsupported
+ * tokens literal because the backend does the same for backwards compatibility.
  */
-export function previewRemark(template: string): string {
+export function previewRemark(template: string, variables: RemarkVar[] = REMARK_VARIABLES, keepUnknown = false): string {
   if (!hasRemarkTokens(template)) return template;
-  return template.replace(TOKEN_RE, (_m, tok: string) => SAMPLE_BY_TOKEN[tok] ?? '');
+  const allowed = new Set(variables.map((v) => v.token));
+  return template.replace(TOKEN_RE, (match, tok: string) => {
+    if (!allowed.has(tok)) return keepUnknown ? match : '';
+    return SAMPLE_BY_TOKEN[tok] ?? '';
+  });
 }

frontend/src/pages/settings/SubscriptionGeneralTab.tsx

@@ -118,19 +118,36 @@ export default function SubscriptionGeneralTab({ allSetting, updateSetting }: Su
         children: (
           <>
             <SettingListItem paddings="small" title={t('pages.settings.subTitle')} description={t('pages.settings.subTitleDesc')}>
-              <Input value={allSetting.subTitle} onChange={(e) => updateSetting({ subTitle: e.target.value })} />
+              <RemarkTemplateField
+                value={allSetting.subTitle}
+                onChange={(v) => updateSetting({ subTitle: v })}
+                metadataOnly
+              />
             </SettingListItem>
             <SettingListItem paddings="small" title={t('pages.settings.subSupportUrl')} description={t('pages.settings.subSupportUrlDesc')}>
-              <Input value={allSetting.subSupportUrl} placeholder="https://example.com"
-                onChange={(e) => updateSetting({ subSupportUrl: e.target.value })} />
+              <RemarkTemplateField
+                value={allSetting.subSupportUrl}
+                placeholder="https://example.com"
+                onChange={(v) => updateSetting({ subSupportUrl: v })}
+                metadataOnly
+              />
             </SettingListItem>
             <SettingListItem paddings="small" title={t('pages.settings.subProfileUrl')} description={t('pages.settings.subProfileUrlDesc')}>
-              <Input value={allSetting.subProfileUrl} placeholder="https://example.com"
-                onChange={(e) => updateSetting({ subProfileUrl: e.target.value })} />
+              <RemarkTemplateField
+                value={allSetting.subProfileUrl}
+                placeholder="https://example.com"
+                onChange={(v) => updateSetting({ subProfileUrl: v })}
+                metadataOnly
+              />
             </SettingListItem>
             <SettingListItem paddings="small" title={t('pages.settings.subAnnounce')} description={t('pages.settings.subAnnounceDesc')}>
-              <Input.TextArea value={allSetting.subAnnounce}
-                onChange={(e) => updateSetting({ subAnnounce: e.target.value })} />
+              <RemarkTemplateField
+                value={allSetting.subAnnounce}
+                onChange={(v) => updateSetting({ subAnnounce: v })}
+                multiline
+                rows={3}
+                metadataOnly
+              />
             </SettingListItem>
             <SettingListItem
               paddings="small"

frontend/src/test/remark-template-field.test.tsx

@@ -2,6 +2,7 @@ import { describe, it, expect, vi } from 'vitest';
 import { fireEvent, render, screen } from '@testing-library/react';
 
 import RemarkTemplateField from '@/components/form/RemarkTemplateField';
+import { previewRemark, SUBSCRIPTION_METADATA_VARIABLES } from '@/lib/remark/remarkVariables';
 
 describe('RemarkTemplateField', () => {
   it('inserts a {{TOKEN}} when a variable chip is clicked', async () => {
@@ -23,4 +24,32 @@ describe('RemarkTemplateField', () => {
     // Sample expansion of {{EMAIL}} is "john".
     expect(screen.getByText('john')).toBeTruthy();
   });
+
+  it('supports token insertion in multiline fields', async () => {
+    const onChange = vi.fn();
+    render(<RemarkTemplateField value="Hello " onChange={onChange} multiline rows={3} />);
+    const textarea = screen.getByRole('textbox') as HTMLTextAreaElement;
+    textarea.focus();
+    textarea.setSelectionRange(textarea.value.length, textarea.value.length);
+
+    fireEvent.click(screen.getByRole('button'));
+    fireEvent.click(await screen.findByText('{{SUB_ID}}'));
+
+    expect(onChange).toHaveBeenCalledTimes(1);
+    expect(onChange.mock.calls[0][0]).toBe('Hello {{SUB_ID}}');
+  });
+
+  it('limits the picker to client identity tokens for metadata fields', async () => {
+    render(<RemarkTemplateField value="" onChange={() => {}} metadataOnly />);
+
+    fireEvent.click(screen.getByRole('button'));
+
+    expect(await screen.findByText('{{EMAIL}}')).toBeTruthy();
+    expect(screen.queryByText('{{INBOUND}}')).toBeNull();
+    expect(screen.queryByText('{{TRAFFIC_LEFT}}')).toBeNull();
+  });
+
+  it('previews metadata fields with metadata-safe tokens only', () => {
+    expect(previewRemark('{{EMAIL}}/{{TRAFFIC_LEFT}}', SUBSCRIPTION_METADATA_VARIABLES, true)).toBe('john/{{TRAFFIC_LEFT}}');
+  });
 });

internal/sub/controller.go

@@ -354,7 +354,9 @@ func (a *SUBController) buildSubPageData(c *gin.Context) (PageData, bool) {
 		basePath = "/"
 	}
 	basePathStr := basePath.(string)
-	page := subReq.BuildPageData(subId, hostHeader, traffic, lastOnline, subs, emails, subURL, subJsonURL, subClashURL, basePathStr, a.subTitle, a.subSupportUrl)
+	metadata := a.metadataForSubRequest(func() *SubService { return subReq }, subId, "")
+	page := subReq.BuildPageData(subId, hostHeader, traffic, lastOnline, subs, emails, subURL, subJsonURL, subClashURL, basePathStr, metadata.Title, metadata.SupportURL)
+	page.SubAnnounce = metadata.Announce
 	return page, true
 }
 
@@ -415,11 +417,9 @@ func (a *SUBController) subs(c *gin.Context) {
 
 		// Add headers
 		header := fmt.Sprintf("upload=%d; download=%d; total=%d; expire=%d", traffic.Up, traffic.Down, traffic.Total, traffic.ExpiryTime/1000)
-		profileUrl := a.subProfileUrl
-		if profileUrl == "" {
-			profileUrl = fmt.Sprintf("%s://%s%s", scheme, hostWithPort, c.Request.RequestURI)
-		}
-		a.ApplyCommonHeaders(c, header, a.updateInterval, a.subTitle, a.subSupportUrl, profileUrl, a.subAnnounce, a.subEnableRouting, a.subRoutingRules, a.subHideSettings)
+		profileURL := fmt.Sprintf("%s://%s%s", scheme, hostWithPort, c.Request.RequestURI)
+		metadata := a.metadataForSubRequest(func() *SubService { return subReq }, subId, profileURL)
+		a.ApplyCommonHeaders(c, header, a.updateInterval, metadata.Title, metadata.SupportURL, metadata.ProfileURL, metadata.Announce, a.subEnableRouting, a.subRoutingRules, a.subHideSettings)
 
 		if a.subIncyEnableRouting && a.subIncyRoutingRules != "" {
 			result.WriteString(a.subIncyRoutingRules)
@@ -605,7 +605,7 @@ func (a *SUBController) subPageContext(page PageData) map[string]any {
 		"links":         page.Result,
 		"emails":        page.Emails,
 		"datepicker":    datepicker,
-		"announce":      a.subAnnounce,
+		"announce":      page.SubAnnounce,
 	}
 }
 
@@ -731,11 +731,15 @@ func (a *SUBController) serveJsonBody(c *gin.Context, alwaysReturnArray bool, co
 	if len(jsonSub) == 0 {
 		return false
 	}
-	profileUrl := a.subProfileUrl
-	if profileUrl == "" {
-		profileUrl = fmt.Sprintf("%s://%s%s", scheme, hostWithPort, c.Request.RequestURI)
-	}
-	a.ApplyCommonHeaders(c, header, a.updateInterval, a.subTitle, a.subSupportUrl, profileUrl, a.subAnnounce, a.subEnableRouting, a.subRoutingRules, a.subHideSettings)
+	profileURL := fmt.Sprintf("%s://%s%s", scheme, hostWithPort, c.Request.RequestURI)
+	var subReq *SubService
+	metadata := a.metadataForSubRequest(func() *SubService {
+		if subReq == nil {
+			subReq = a.subService.ForRequest(host)
+		}
+		return subReq
+	}, subId, profileURL)
+	a.ApplyCommonHeaders(c, header, a.updateInterval, metadata.Title, metadata.SupportURL, metadata.ProfileURL, metadata.Announce, a.subEnableRouting, a.subRoutingRules, a.subHideSettings)
 	if rawDownload {
 		c.Writer.Header().Set("Content-Disposition", `attachment; filename="subscription.json"`)
 	}
@@ -775,16 +779,20 @@ func (a *SUBController) serveClashBody(c *gin.Context, rawDownload bool) bool {
 	if len(clashSub) == 0 {
 		return false
 	}
-	profileUrl := a.subProfileUrl
-	if profileUrl == "" {
-		profileUrl = fmt.Sprintf("%s://%s%s", scheme, hostWithPort, c.Request.RequestURI)
-	}
-	a.ApplyCommonHeaders(c, header, a.updateInterval, a.subTitle, a.subSupportUrl, profileUrl, a.subAnnounce, a.subEnableRouting, a.subRoutingRules, a.subHideSettings)
+	profileURL := fmt.Sprintf("%s://%s%s", scheme, hostWithPort, c.Request.RequestURI)
+	var subReq *SubService
+	metadata := a.metadataForSubRequest(func() *SubService {
+		if subReq == nil {
+			subReq = a.subService.ForRequest(host)
+		}
+		return subReq
+	}, subId, profileURL)
+	a.ApplyCommonHeaders(c, header, a.updateInterval, metadata.Title, metadata.SupportURL, metadata.ProfileURL, metadata.Announce, a.subEnableRouting, a.subRoutingRules, a.subHideSettings)
 	if rawDownload {
 		c.Writer.Header().Set("Content-Disposition", `attachment; filename="subscription.yaml"`)
-	} else if a.subTitle != "" {
+	} else if metadata.Title != "" {
 		// Clash clients commonly use Content-Disposition to choose the imported profile name.
-		c.Writer.Header().Set("Content-Disposition", fmt.Sprintf(`attachment; filename*=UTF-8''%s`, url.PathEscape(a.subTitle)))
+		c.Writer.Header().Set("Content-Disposition", fmt.Sprintf(`attachment; filename*=UTF-8''%s`, url.PathEscape(metadata.Title)))
 	}
 	c.Data(200, "application/yaml; charset=utf-8", []byte(clashSub))
 	return true

internal/sub/placeholders.go

@@ -0,0 +1,118 @@
+package sub
+
+import (
+	"errors"
+	"net/url"
+	"strings"
+
+	"gorm.io/gorm"
+
+	"github.com/mhsanaei/3x-ui/v3/internal/database"
+	"github.com/mhsanaei/3x-ui/v3/internal/database/model"
+	"github.com/mhsanaei/3x-ui/v3/internal/logger"
+)
+
+type subPlaceholderData struct {
+	SubID   string
+	Context remarkContext
+	HasCtx  bool
+	Escape  bool
+}
+
+type renderedSubMetadata struct {
+	Title      string
+	SupportURL string
+	ProfileURL string
+	Announce   string
+}
+
+func renderSubPlaceholders(value string, data subPlaceholderData) string {
+	if value == "" || !strings.Contains(value, "{") {
+		return value
+	}
+
+	ctx := data.Context
+	if !data.HasCtx {
+		ctx = remarkContext{
+			client: model.Client{
+				SubID: data.SubID,
+			},
+		}
+	}
+	if ctx.client.SubID == "" {
+		ctx.client.SubID = data.SubID
+	}
+	return strings.TrimSpace(expandSubMetadataVars(value, ctx, data.Escape))
+}
+
+var subMetadataTokens = map[string]bool{
+	"EMAIL":       true,
+	"ID":          true,
+	"SHORT_ID":    true,
+	"TELEGRAM_ID": true,
+	"SUB_ID":      true,
+}
+
+func expandSubMetadataVars(template string, ctx remarkContext, escape bool) string {
+	return remarkVarRe.ReplaceAllStringFunc(template, func(match string) string {
+		token := match[2 : len(match)-2]
+		if !subMetadataTokens[token] {
+			return match
+		}
+		value := remarkVarValue(token, ctx)
+		if escape {
+			return url.QueryEscape(value)
+		}
+		return value
+	})
+}
+
+func subMetadataUsesPlaceholders(values ...string) bool {
+	for _, value := range values {
+		if strings.Contains(value, "{") {
+			return true
+		}
+	}
+	return false
+}
+
+func (a *SUBController) metadataForSubRequest(getSubReq func() *SubService, subID string, fallbackProfileURL string) renderedSubMetadata {
+	var context remarkContext
+	var hasContext bool
+	if subMetadataUsesPlaceholders(a.subTitle, a.subSupportUrl, a.subProfileUrl, a.subAnnounce) {
+		var err error
+		subReq := getSubReq()
+		context, hasContext, err = subReq.subscriptionTemplateContextBySubID(subID)
+		if err != nil {
+			logger.Warning("sub: load template contexts for subscription metadata:", err)
+		}
+	}
+	profileURL := a.subProfileUrl
+	if profileURL == "" {
+		profileURL = fallbackProfileURL
+	} else {
+		profileURL = renderSubPlaceholders(profileURL, subPlaceholderData{SubID: subID, Context: context, HasCtx: hasContext, Escape: true})
+	}
+	data := subPlaceholderData{SubID: subID, Context: context, HasCtx: hasContext}
+	return renderedSubMetadata{
+		Title:      renderSubPlaceholders(a.subTitle, data),
+		SupportURL: renderSubPlaceholders(a.subSupportUrl, subPlaceholderData{SubID: subID, Context: context, HasCtx: hasContext, Escape: true}),
+		ProfileURL: profileURL,
+		Announce:   renderSubPlaceholders(a.subAnnounce, data),
+	}
+}
+
+func (s *SubService) subscriptionTemplateContextBySubID(subID string) (remarkContext, bool, error) {
+	if subID == "" {
+		return remarkContext{}, false, nil
+	}
+	var rec model.ClientRecord
+	err := database.GetDB().Where("sub_id = ?", subID).Order("id ASC").First(&rec).Error
+	if errors.Is(err, gorm.ErrRecordNotFound) {
+		return remarkContext{}, false, nil
+	}
+	if err != nil {
+		return remarkContext{}, false, err
+	}
+	return remarkContext{client: *rec.ToClient()}, true, nil
+}

internal/sub/placeholders_test.go

@@ -0,0 +1,132 @@
+package sub
+
+import (
+	"testing"
+
+	"github.com/mhsanaei/3x-ui/v3/internal/database"
+	"github.com/mhsanaei/3x-ui/v3/internal/database/model"
+)
+
+func TestRenderSubPlaceholders(t *testing.T) {
+	data := subPlaceholderData{
+		SubID: "sub-123",
+		Context: remarkContext{client: model.Client{
+			Email:  "Ilnur",
+			ID:     "abcdef12-3456-7890-abcd-ef1234567890",
+			SubID:  "sub-123",
+			TgID:   42,
+			Enable: true,
+		}},
+		HasCtx: true,
+	}
+
+	tests := []struct {
+		name string
+		tmpl string
+		data subPlaceholderData
+		want string
+	}{
+		{
+			name: "identity tokens",
+			tmpl: "{{EMAIL}}/{{ID}}/{{SHORT_ID}}/{{SUB_ID}}/{{TELEGRAM_ID}}",
+			data: data,
+			want: "Ilnur/abcdef12-3456-7890-abcd-ef1234567890/abcdef12/sub-123/42",
+		},
+		{
+			name: "no template",
+			tmpl: "isVPN",
+			data: subPlaceholderData{SubID: "sub-123"},
+			want: "isVPN",
+		},
+		{
+			name: "unsupported tokens stay literal",
+			tmpl: "{{SUB_ID}}/{{INBOUND}}/{{TRAFFIC_LEFT}}/{{PROTOCOL}}/{EMAIL}",
+			data: subPlaceholderData{SubID: "sub-123"},
+			want: "sub-123/{{INBOUND}}/{{TRAFFIC_LEFT}}/{{PROTOCOL}}/{EMAIL}",
+		},
+		{
+			name: "URL values are escaped",
+			tmpl: "https://support.example/?email={{EMAIL}}&sub={{SUB_ID}}",
+			data: subPlaceholderData{
+				SubID: "sub id",
+				Context: remarkContext{client: model.Client{
+					Email: "john doe@example.com",
+					SubID: "sub id",
+				}},
+				HasCtx: true,
+				Escape: true,
+			},
+			want: "https://support.example/?email=john+doe%40example.com&sub=sub+id",
+		},
+	}
+	for _, tt := range tests {
+		t.Run(tt.name, func(t *testing.T) {
+			if got := renderSubPlaceholders(tt.tmpl, tt.data); got != tt.want {
+				t.Fatalf("renderSubPlaceholders() = %q, want %q", got, tt.want)
+			}
+		})
+	}
+}
+
+func TestMetadataForSubRequestDoesNotExpandFallbackProfileURL(t *testing.T) {
+	a := &SUBController{
+		subTitle:      "isVPN",
+		subSupportUrl: "https://support.example/",
+	}
+	fallback := "https://sub.example.com/sub/sub-123?x={{EMAIL}}"
+
+	metadata := a.metadataForSubRequest(func() *SubService {
+		t.Fatal("metadataForSubRequest loaded a subscription context without configured placeholders")
+		return nil
+	}, "sub-123", fallback)
+
+	if metadata.ProfileURL != fallback {
+		t.Fatalf("ProfileURL = %q, want untouched fallback %q", metadata.ProfileURL, fallback)
+	}
+}
+
+func TestMetadataForSubRequestUsesStableClientIdentity(t *testing.T) {
+	initSubDB(t)
+	db := database.GetDB()
+	first := model.ClientRecord{
+		Email:  "john doe@example.com",
+		SubID:  "sub-123",
+		UUID:   "abcdef12-3456-7890-abcd-ef1234567890",
+		TgID:   42,
+		Enable: true,
+	}
+	second := model.ClientRecord{
+		Email:  "jane@example.com",
+		SubID:  "sub-123",
+		UUID:   "fedcba98-3456-7890-abcd-ef1234567890",
+		TgID:   99,
+		Enable: true,
+	}
+	if err := db.Create(&first).Error; err != nil {
+		t.Fatalf("seed first client: %v", err)
+	}
+	if err := db.Create(&second).Error; err != nil {
+		t.Fatalf("seed second client: %v", err)
+	}
+
+	a := &SUBController{
+		subTitle:      "isVPN — {{EMAIL}}",
+		subSupportUrl: "https://support.example/?email={{EMAIL}}&tg={{TELEGRAM_ID}}",
+		subProfileUrl: "https://profile.example/account/{{ID}}",
+		subAnnounce:   "Subscription {{SUB_ID}}",
+	}
+	metadata := a.metadataForSubRequest(func() *SubService { return &SubService{} }, "sub-123", "https://fallback.example/{{EMAIL}}")
+
+	if metadata.Title != "isVPN — john doe@example.com" {
+		t.Fatalf("Title = %q", metadata.Title)
+	}
+	if metadata.SupportURL != "https://support.example/?email=john+doe%40example.com&tg=42" {
+		t.Fatalf("SupportURL = %q", metadata.SupportURL)
+	}
+	if metadata.ProfileURL != "https://profile.example/account/abcdef12-3456-7890-abcd-ef1234567890" {
+		t.Fatalf("ProfileURL = %q", metadata.ProfileURL)
+	}
+	if metadata.Announce != "Subscription sub-123" {
+		t.Fatalf("Announce = %q", metadata.Announce)
+	}
+}

internal/sub/service.go

@@ -2488,6 +2488,7 @@ type PageData struct {
 	SubClashUrl   string
 	SubTitle      string
 	SubSupportUrl string
+	SubAnnounce   string
 	Result        []string
 	Emails        []string
 }

internal/web/translation/ar-EG.json

@@ -1117,13 +1117,13 @@
       "subClashUserAgentRegex": "تعبير User-Agent لعملاء Clash/Mihomo",
       "subClashUserAgentRegexDesc": "تعبير Go RE2 منتظم يُطابَق مع وكيل المستخدم (User-Agent) للتعرف على عملاء Clash/Mihomo في رابط الاشتراك القياسي. اتركه فارغًا لاستخدام النمط الافتراضي. أعد تشغيل اللوحة بعد التغيير.",
       "subTitle": "عنوان الاشتراك",
-      "subTitleDesc": "العنوان اللي هيظهر في عميل VPN",
+      "subTitleDesc": "العنوان اللي هيظهر في عميل VPN. يدعم رموز هوية العميل: {{EMAIL}}, {{ID}}, {{SHORT_ID}}, {{SUB_ID}}, {{TELEGRAM_ID}}.",
       "subSupportUrl": "رابط الدعم",
-      "subSupportUrlDesc": "رابط الدعم الفني المعروض في عميل VPN",
+      "subSupportUrlDesc": "رابط الدعم الفني المعروض في عميل VPN. يدعم رموز هوية العميل: {{EMAIL}}, {{ID}}, {{SHORT_ID}}, {{SUB_ID}}, {{TELEGRAM_ID}}.",
       "subProfileUrl": "رابط الملف الشخصي",
-      "subProfileUrlDesc": "رابط لموقعك الإلكتروني يظهر في عميل VPN",
+      "subProfileUrlDesc": "رابط لموقعك الإلكتروني يظهر في عميل VPN. يدعم رموز هوية العميل: {{EMAIL}}, {{ID}}, {{SHORT_ID}}, {{SUB_ID}}, {{TELEGRAM_ID}}.",
       "subAnnounce": "إعلان",
-      "subAnnounceDesc": "نص الإعلان المعروض في عميل VPN",
+      "subAnnounceDesc": "نص الإعلان المعروض في عميل VPN. يدعم رموز هوية العميل: {{EMAIL}}, {{ID}}, {{SHORT_ID}}, {{SUB_ID}}, {{TELEGRAM_ID}}.",
       "subThemeDir": "مجلد قالب الاشتراك",
       "subThemeDirDesc": "المسار المطلق لمجلد يحتوي على قالب مخصص (index.html/sub.html) لصفحة الاشتراك (مثل /etc/3x-ui/sub_templates/my-theme/). اتركه فارغًا لاستخدام الصفحة الافتراضية.",
       "subThemeDirDocs": "دليل القالب ↗",

internal/web/translation/en-US.json

@@ -1238,13 +1238,13 @@
       "subClashUserAgentRegex": "Clash/Mihomo User-Agent regex",
       "subClashUserAgentRegexDesc": "Go RE2 regular expression matched against the client's User-Agent to recognize Clash/Mihomo clients on the standard subscription URL. Leave empty to use the default pattern. Restart the panel after changes.",
       "subTitle": "Subscription Title",
-      "subTitleDesc": "Title shown in VPN client",
+      "subTitleDesc": "Title shown in VPN client. Supports client identity tokens: {{EMAIL}}, {{ID}}, {{SHORT_ID}}, {{SUB_ID}}, {{TELEGRAM_ID}}.",
       "subSupportUrl": "Support URL",
-      "subSupportUrlDesc": "Technical support link shown in the VPN client",
+      "subSupportUrlDesc": "Technical support link shown in the VPN client. Supports client identity tokens: {{EMAIL}}, {{ID}}, {{SHORT_ID}}, {{SUB_ID}}, {{TELEGRAM_ID}}.",
       "subProfileUrl": "Profile URL",
-      "subProfileUrlDesc": "A link to your website displayed in the VPN client",
+      "subProfileUrlDesc": "A link to your website displayed in the VPN client. Supports client identity tokens: {{EMAIL}}, {{ID}}, {{SHORT_ID}}, {{SUB_ID}}, {{TELEGRAM_ID}}.",
       "subAnnounce": "Announce",
-      "subAnnounceDesc": "The announcement text displayed in the VPN client",
+      "subAnnounceDesc": "The announcement text displayed in the VPN client. Supports client identity tokens: {{EMAIL}}, {{ID}}, {{SHORT_ID}}, {{SUB_ID}}, {{TELEGRAM_ID}}.",
       "subThemeDir": "Sub Theme Directory",
       "subThemeDirDesc": "Absolute path to a folder containing a custom index.html/sub.html subscription page template (e.g. /etc/3x-ui/sub_templates/my-theme/). Leave empty to use the default page.",
       "subThemeDirDocs": "Template guide ↗",

internal/web/translation/es-ES.json

@@ -1117,13 +1117,13 @@
       "subClashUserAgentRegex": "Expresión User-Agent de Clash/Mihomo",
       "subClashUserAgentRegexDesc": "Expresión regular Go RE2 que se compara con el User-Agent del cliente para reconocer clientes Clash/Mihomo en la URL de suscripción estándar. Déjala vacía para usar el patrón predeterminado. Reinicia el panel después de cambiarla.",
       "subTitle": "Título de la Suscripción",
-      "subTitleDesc": "Título mostrado en el cliente VPN",
+      "subTitleDesc": "Título mostrado en el cliente VPN. Admite tokens de identidad del cliente: {{EMAIL}}, {{ID}}, {{SHORT_ID}}, {{SUB_ID}}, {{TELEGRAM_ID}}.",
       "subSupportUrl": "URL de soporte",
-      "subSupportUrlDesc": "Enlace de soporte técnico mostrado en el cliente VPN",
+      "subSupportUrlDesc": "Enlace de soporte técnico mostrado en el cliente VPN. Admite tokens de identidad del cliente: {{EMAIL}}, {{ID}}, {{SHORT_ID}}, {{SUB_ID}}, {{TELEGRAM_ID}}.",
       "subProfileUrl": "URL del perfil",
-      "subProfileUrlDesc": "Un enlace a tu sitio web mostrado en el cliente VPN",
+      "subProfileUrlDesc": "Un enlace a tu sitio web mostrado en el cliente VPN. Admite tokens de identidad del cliente: {{EMAIL}}, {{ID}}, {{SHORT_ID}}, {{SUB_ID}}, {{TELEGRAM_ID}}.",
       "subAnnounce": "Anuncio",
-      "subAnnounceDesc": "El texto del anuncio mostrado en el cliente VPN",
+      "subAnnounceDesc": "El texto del anuncio mostrado en el cliente VPN. Admite tokens de identidad del cliente: {{EMAIL}}, {{ID}}, {{SHORT_ID}}, {{SUB_ID}}, {{TELEGRAM_ID}}.",
       "subThemeDir": "Directorio del tema de suscripción",
       "subThemeDirDesc": "Ruta absoluta a una carpeta que contiene una plantilla personalizada (index.html/sub.html) para la página de suscripción (p. ej. /etc/3x-ui/sub_templates/my-theme/). Déjalo vacío para usar la página predeterminada.",
       "subThemeDirDocs": "Guía de plantillas ↗",

internal/web/translation/fa-IR.json

@@ -1121,13 +1121,13 @@
       "subClashUserAgentRegex": "عبارت User-Agent برای Clash/Mihomo",
       "subClashUserAgentRegexDesc": "عبارت منظم Go RE2 که با عامل کاربر (User-Agent) کلاینت مطابقت داده می‌شود تا کلاینت‌های Clash/Mihomo در آدرس استاندارد اشتراک شناسایی شوند. برای استفاده از الگوی پیش‌فرض خالی بگذارید. پس از تغییر، پنل را راه‌اندازی مجدد کنید.",
       "subTitle": "عنوان اشتراک",
-      "subTitleDesc": "عنوان نمایش داده شده در کلاینت VPN",
+      "subTitleDesc": "عنوان نمایش داده شده در کلاینت VPN. از توکن‌های هویت کلاینت پشتیبانی می‌کند: {{EMAIL}}, {{ID}}, {{SHORT_ID}}, {{SUB_ID}}, {{TELEGRAM_ID}}.",
       "subSupportUrl": "آدرس پشتیبانی",
-      "subSupportUrlDesc": "لینک پشتیبانی فنی که در کلاینت VPN نمایش داده می‌شود",
+      "subSupportUrlDesc": "لینک پشتیبانی فنی که در کلاینت VPN نمایش داده می‌شود. از توکن‌های هویت کلاینت پشتیبانی می‌کند: {{EMAIL}}, {{ID}}, {{SHORT_ID}}, {{SUB_ID}}, {{TELEGRAM_ID}}.",
       "subProfileUrl": "آدرس پروفایل",
-      "subProfileUrlDesc": "لینک وب‌سایت شما که در کلاینت VPN نمایش داده می‌شود",
+      "subProfileUrlDesc": "لینک وب‌سایت شما که در کلاینت VPN نمایش داده می‌شود. از توکن‌های هویت کلاینت پشتیبانی می‌کند: {{EMAIL}}, {{ID}}, {{SHORT_ID}}, {{SUB_ID}}, {{TELEGRAM_ID}}.",
       "subAnnounce": "اعلان",
-      "subAnnounceDesc": "متن اعلانی که در کلاینت VPN نمایش داده می‌شود",
+      "subAnnounceDesc": "متن اعلانی که در کلاینت VPN نمایش داده می‌شود. از توکن‌های هویت کلاینت پشتیبانی می‌کند: {{EMAIL}}, {{ID}}, {{SHORT_ID}}, {{SUB_ID}}, {{TELEGRAM_ID}}.",
       "subThemeDir": "پوشه قالب صفحه اشتراک",
       "subThemeDirDesc": "مسیر مطلق پوشه‌ای که شامل یک قالب سفارشی (index.html/sub.html) برای صفحه اشتراک است (مثلاً /etc/3x-ui/sub_templates/my-theme/). برای استفاده از صفحه پیش‌فرض خالی بگذارید.",
       "subThemeDirDocs": "راهنمای قالب ↗",

internal/web/translation/id-ID.json

@@ -1117,13 +1117,13 @@
       "subClashUserAgentRegex": "Regex User-Agent Clash/Mihomo",
       "subClashUserAgentRegexDesc": "Ekspresi reguler Go RE2 yang dicocokkan dengan User-Agent klien untuk mengenali klien Clash/Mihomo pada URL langganan standar. Kosongkan untuk memakai pola bawaan. Mulai ulang panel setelah mengubahnya.",
       "subTitle": "Judul Langganan",
-      "subTitleDesc": "Judul yang ditampilkan di klien VPN",
+      "subTitleDesc": "Judul yang ditampilkan di klien VPN. Mendukung token identitas klien: {{EMAIL}}, {{ID}}, {{SHORT_ID}}, {{SUB_ID}}, {{TELEGRAM_ID}}.",
       "subSupportUrl": "URL Dukungan",
-      "subSupportUrlDesc": "Tautan dukungan teknis yang ditampilkan di klien VPN",
+      "subSupportUrlDesc": "Tautan dukungan teknis yang ditampilkan di klien VPN. Mendukung token identitas klien: {{EMAIL}}, {{ID}}, {{SHORT_ID}}, {{SUB_ID}}, {{TELEGRAM_ID}}.",
       "subProfileUrl": "URL Profil",
-      "subProfileUrlDesc": "Tautan ke situs web Anda yang ditampilkan di klien VPN",
+      "subProfileUrlDesc": "Tautan ke situs web Anda yang ditampilkan di klien VPN. Mendukung token identitas klien: {{EMAIL}}, {{ID}}, {{SHORT_ID}}, {{SUB_ID}}, {{TELEGRAM_ID}}.",
       "subAnnounce": "Pengumuman",
-      "subAnnounceDesc": "Teks pengumuman yang ditampilkan di klien VPN",
+      "subAnnounceDesc": "Teks pengumuman yang ditampilkan di klien VPN. Mendukung token identitas klien: {{EMAIL}}, {{ID}}, {{SHORT_ID}}, {{SUB_ID}}, {{TELEGRAM_ID}}.",
       "subThemeDir": "Direktori Tema Langganan",
       "subThemeDirDesc": "Path absolut ke folder yang berisi template kustom (index.html/sub.html) untuk halaman langganan (mis. /etc/3x-ui/sub_templates/my-theme/). Biarkan kosong untuk menggunakan halaman default.",
       "subThemeDirDocs": "Panduan templat ↗",

internal/web/translation/ja-JP.json

@@ -1117,13 +1117,13 @@
       "subClashUserAgentRegex": "Clash/Mihomo User-Agent 正規表現",
       "subClashUserAgentRegexDesc": "標準サブスクリプション URL で Clash/Mihomo クライアントを識別するため、クライアントの User-Agent と照合する Go RE2 正規表現です。空欄の場合は既定のパターンを使用します。変更後にパネルを再起動してください。",
       "subTitle": "サブスクリプションタイトル",
-      "subTitleDesc": "VPNクライアントに表示されるタイトル",
+      "subTitleDesc": "VPNクライアントに表示されるタイトル。クライアント識別トークンをサポートします: {{EMAIL}}, {{ID}}, {{SHORT_ID}}, {{SUB_ID}}, {{TELEGRAM_ID}}。",
       "subSupportUrl": "サポートURL",
-      "subSupportUrlDesc": "VPNクライアントに表示されるテクニカルサポートへのリンク",
+      "subSupportUrlDesc": "VPNクライアントに表示されるテクニカルサポートへのリンク。クライアント識別トークンをサポートします: {{EMAIL}}, {{ID}}, {{SHORT_ID}}, {{SUB_ID}}, {{TELEGRAM_ID}}。",
       "subProfileUrl": "プロフィールURL",
-      "subProfileUrlDesc": "VPNクライアントに表示されるWebサイトへのリンク",
+      "subProfileUrlDesc": "VPNクライアントに表示されるWebサイトへのリンク。クライアント識別トークンをサポートします: {{EMAIL}}, {{ID}}, {{SHORT_ID}}, {{SUB_ID}}, {{TELEGRAM_ID}}。",
       "subAnnounce": "お知らせ",
-      "subAnnounceDesc": "VPNクライアントに表示されるお知らせのテキスト",
+      "subAnnounceDesc": "VPNクライアントに表示されるお知らせのテキスト。クライアント識別トークンをサポートします: {{EMAIL}}, {{ID}}, {{SHORT_ID}}, {{SUB_ID}}, {{TELEGRAM_ID}}。",
       "subThemeDir": "サブスクリプションテーマディレクトリ",
       "subThemeDirDesc": "サブスクリプションページのカスタムテンプレート (index.html/sub.html) を含むフォルダーの絶対パス（例: /etc/3x-ui/sub_templates/my-theme/）。空欄の場合はデフォルトのページを使用します。",
       "subThemeDirDocs": "テンプレートガイド ↗",

internal/web/translation/pt-BR.json

@@ -1117,13 +1117,13 @@
       "subClashUserAgentRegex": "Expressão User-Agent do Clash/Mihomo",
       "subClashUserAgentRegexDesc": "Expressão regular Go RE2 comparada com o User-Agent do cliente para reconhecer clientes Clash/Mihomo na URL de assinatura padrão. Deixe em branco para usar o padrão predefinido. Reinicie o painel após alterá-la.",
       "subTitle": "Título da Assinatura",
-      "subTitleDesc": "Título exibido no cliente VPN",
+      "subTitleDesc": "Título exibido no cliente VPN. Suporta tokens de identidade do cliente: {{EMAIL}}, {{ID}}, {{SHORT_ID}}, {{SUB_ID}}, {{TELEGRAM_ID}}.",
       "subSupportUrl": "URL de Suporte",
-      "subSupportUrlDesc": "Link de suporte técnico exibido no cliente VPN",
+      "subSupportUrlDesc": "Link de suporte técnico exibido no cliente VPN. Suporta tokens de identidade do cliente: {{EMAIL}}, {{ID}}, {{SHORT_ID}}, {{SUB_ID}}, {{TELEGRAM_ID}}.",
       "subProfileUrl": "URL de Perfil",
-      "subProfileUrlDesc": "Um link para o seu site exibido no cliente VPN",
+      "subProfileUrlDesc": "Um link para o seu site exibido no cliente VPN. Suporta tokens de identidade do cliente: {{EMAIL}}, {{ID}}, {{SHORT_ID}}, {{SUB_ID}}, {{TELEGRAM_ID}}.",
       "subAnnounce": "Anúncio",
-      "subAnnounceDesc": "O texto do anúncio exibido no cliente VPN",
+      "subAnnounceDesc": "O texto do anúncio exibido no cliente VPN. Suporta tokens de identidade do cliente: {{EMAIL}}, {{ID}}, {{SHORT_ID}}, {{SUB_ID}}, {{TELEGRAM_ID}}.",
       "subThemeDir": "Diretório do tema de assinatura",
       "subThemeDirDesc": "Caminho absoluto para uma pasta contendo um modelo personalizado (index.html/sub.html) para a página de assinatura (ex.: /etc/3x-ui/sub_templates/my-theme/). Deixe vazio para usar a página padrão.",
       "subThemeDirDocs": "Guia de modelos ↗",

internal/web/translation/ru-RU.json

@@ -1117,13 +1117,13 @@
       "subClashUserAgentRegex": "Регулярное выражение User-Agent Clash/Mihomo",
       "subClashUserAgentRegexDesc": "Регулярное выражение Go RE2, сопоставляемое с User-Agent клиента для распознавания клиентов Clash/Mihomo на стандартном URL подписки. Оставьте поле пустым, чтобы использовать шаблон по умолчанию. После изменения перезапустите панель.",
       "subTitle": "Заголовок подписки",
-      "subTitleDesc": "Название подписки, которое видит клиент в VPN-клиенте",
+      "subTitleDesc": "Название подписки, которое видит клиент в VPN-клиенте. Поддерживает токены идентификации клиента: {{EMAIL}}, {{ID}}, {{SHORT_ID}}, {{SUB_ID}}, {{TELEGRAM_ID}}.",
       "subSupportUrl": "URL поддержки",
-      "subSupportUrlDesc": "Ссылка на техническую поддержку, отображаемая в VPN-клиенте",
+      "subSupportUrlDesc": "Ссылка на техническую поддержку, отображаемая в VPN-клиенте. Поддерживает токены идентификации клиента: {{EMAIL}}, {{ID}}, {{SHORT_ID}}, {{SUB_ID}}, {{TELEGRAM_ID}}.",
       "subProfileUrl": "URL профиля",
-      "subProfileUrlDesc": "Ссылка на ваш сайт, отображаемая в VPN-клиенте",
+      "subProfileUrlDesc": "Ссылка на ваш сайт, отображаемая в VPN-клиенте. Поддерживает токены идентификации клиента: {{EMAIL}}, {{ID}}, {{SHORT_ID}}, {{SUB_ID}}, {{TELEGRAM_ID}}.",
       "subAnnounce": "Объявление",
-      "subAnnounceDesc": "Текст объявления, отображаемый в VPN-клиенте",
+      "subAnnounceDesc": "Текст объявления, отображаемый в VPN-клиенте. Поддерживает токены идентификации клиента: {{EMAIL}}, {{ID}}, {{SHORT_ID}}, {{SUB_ID}}, {{TELEGRAM_ID}}.",
       "subThemeDir": "Каталог темы подписки",
       "subThemeDirDesc": "Абсолютный путь к папке с пользовательским шаблоном (index.html/sub.html) для страницы подписки (например, /etc/3x-ui/sub_templates/my-theme/). Оставьте пустым, чтобы использовать страницу по умолчанию.",
       "subThemeDirDocs": "Руководство по шаблонам ↗",

internal/web/translation/tr-TR.json

@@ -1117,13 +1117,13 @@
       "subClashUserAgentRegex": "Clash/Mihomo User-Agent düzenli ifadesi",
       "subClashUserAgentRegexDesc": "Standart abonelik URL'sinde Clash/Mihomo istemcilerini tanımak için istemcinin User-Agent değeriyle eşleştirilen Go RE2 düzenli ifadesi. Varsayılan deseni kullanmak için boş bırakın. Değişiklikten sonra paneli yeniden başlatın.",
       "subTitle": "Abonelik Başlığı",
-      "subTitleDesc": "VPN istemcisinde gösterilen başlık.",
+      "subTitleDesc": "VPN istemcisinde gösterilen başlık. İstemci kimlik tokenlarını destekler: {{EMAIL}}, {{ID}}, {{SHORT_ID}}, {{SUB_ID}}, {{TELEGRAM_ID}}.",
       "subSupportUrl": "Destek URL'si",
-      "subSupportUrlDesc": "VPN istemcisinde gösterilen teknik destek bağlantısı.",
+      "subSupportUrlDesc": "VPN istemcisinde gösterilen teknik destek bağlantısı. İstemci kimlik tokenlarını destekler: {{EMAIL}}, {{ID}}, {{SHORT_ID}}, {{SUB_ID}}, {{TELEGRAM_ID}}.",
       "subProfileUrl": "Profil URL'si",
-      "subProfileUrlDesc": "VPN istemcisinde görüntülenen web sitenize giden bağlantı.",
+      "subProfileUrlDesc": "VPN istemcisinde görüntülenen web sitenize giden bağlantı. İstemci kimlik tokenlarını destekler: {{EMAIL}}, {{ID}}, {{SHORT_ID}}, {{SUB_ID}}, {{TELEGRAM_ID}}.",
       "subAnnounce": "Duyuru",
-      "subAnnounceDesc": "VPN istemcisinde görüntülenen duyuru metni",
+      "subAnnounceDesc": "VPN istemcisinde görüntülenen duyuru metni. İstemci kimlik tokenlarını destekler: {{EMAIL}}, {{ID}}, {{SHORT_ID}}, {{SUB_ID}}, {{TELEGRAM_ID}}.",
       "subThemeDir": "Abonelik Tema Dizini",
       "subThemeDirDesc": "Abonelik sayfası için özel bir şablon (index.html/sub.html) içeren klasörün mutlak yolu (örn. /etc/3x-ui/sub_templates/my-theme/). Varsayılan sayfayı kullanmak için boş bırakın.",
       "subThemeDirDocs": "Şablon kılavuzu ↗",

internal/web/translation/uk-UA.json

@@ -1117,13 +1117,13 @@
       "subClashUserAgentRegex": "Регулярний вираз User-Agent Clash/Mihomo",
       "subClashUserAgentRegexDesc": "Регулярний вираз Go RE2, який зіставляється з User-Agent клієнта для розпізнавання клієнтів Clash/Mihomo на стандартній URL-адресі підписки. Залиште поле порожнім для стандартного шаблону. Після зміни перезапустіть панель.",
       "subTitle": "Назва Підписки",
-      "subTitleDesc": "Назва, яка відображається у VPN-клієнті",
+      "subTitleDesc": "Назва, яка відображається у VPN-клієнті. Підтримує токени ідентифікації клієнта: {{EMAIL}}, {{ID}}, {{SHORT_ID}}, {{SUB_ID}}, {{TELEGRAM_ID}}.",
       "subSupportUrl": "URL підтримки",
-      "subSupportUrlDesc": "Посилання на технічну підтримку, що відображається у VPN-клієнті",
+      "subSupportUrlDesc": "Посилання на технічну підтримку, що відображається у VPN-клієнті. Підтримує токени ідентифікації клієнта: {{EMAIL}}, {{ID}}, {{SHORT_ID}}, {{SUB_ID}}, {{TELEGRAM_ID}}.",
       "subProfileUrl": "URL профілю",
-      "subProfileUrlDesc": "Посилання на ваш вебсайт, що відображається у VPN-клієнті",
+      "subProfileUrlDesc": "Посилання на ваш вебсайт, що відображається у VPN-клієнті. Підтримує токени ідентифікації клієнта: {{EMAIL}}, {{ID}}, {{SHORT_ID}}, {{SUB_ID}}, {{TELEGRAM_ID}}.",
       "subAnnounce": "Оголошення",
-      "subAnnounceDesc": "Текст оголошення, що відображається у VPN-клієнті",
+      "subAnnounceDesc": "Текст оголошення, що відображається у VPN-клієнті. Підтримує токени ідентифікації клієнта: {{EMAIL}}, {{ID}}, {{SHORT_ID}}, {{SUB_ID}}, {{TELEGRAM_ID}}.",
       "subThemeDir": "Каталог теми підписки",
       "subThemeDirDesc": "Абсолютний шлях до теки з користувацьким шаблоном (index.html/sub.html) для сторінки підписки (наприклад, /etc/3x-ui/sub_templates/my-theme/). Залиште порожнім, щоб використовувати сторінку за замовчуванням.",
       "subThemeDirDocs": "Посібник із шаблонів ↗",

internal/web/translation/vi-VN.json

@@ -1117,13 +1117,13 @@
       "subClashUserAgentRegex": "Biểu thức User-Agent Clash/Mihomo",
       "subClashUserAgentRegexDesc": "Biểu thức chính quy Go RE2 được so khớp với User-Agent của ứng dụng để nhận diện ứng dụng Clash/Mihomo trên URL đăng ký tiêu chuẩn. Để trống để dùng mẫu mặc định. Khởi động lại bảng điều khiển sau khi thay đổi.",
       "subTitle": "Tiêu đề Đăng ký",
-      "subTitleDesc": "Tiêu đề hiển thị trong ứng dụng VPN",
+      "subTitleDesc": "Tiêu đề hiển thị trong ứng dụng VPN. Hỗ trợ token định danh khách hàng: {{EMAIL}}, {{ID}}, {{SHORT_ID}}, {{SUB_ID}}, {{TELEGRAM_ID}}.",
       "subSupportUrl": "URL Hỗ trợ",
-      "subSupportUrlDesc": "Liên kết hỗ trợ kỹ thuật hiển thị trong ứng dụng VPN",
+      "subSupportUrlDesc": "Liên kết hỗ trợ kỹ thuật hiển thị trong ứng dụng VPN. Hỗ trợ token định danh khách hàng: {{EMAIL}}, {{ID}}, {{SHORT_ID}}, {{SUB_ID}}, {{TELEGRAM_ID}}.",
       "subProfileUrl": "URL Hồ sơ",
-      "subProfileUrlDesc": "Liên kết đến trang web của bạn hiển thị trong ứng dụng VPN",
+      "subProfileUrlDesc": "Liên kết đến trang web của bạn hiển thị trong ứng dụng VPN. Hỗ trợ token định danh khách hàng: {{EMAIL}}, {{ID}}, {{SHORT_ID}}, {{SUB_ID}}, {{TELEGRAM_ID}}.",
       "subAnnounce": "Thông báo",
-      "subAnnounceDesc": "Văn bản thông báo hiển thị trong ứng dụng VPN",
+      "subAnnounceDesc": "Văn bản thông báo hiển thị trong ứng dụng VPN. Hỗ trợ token định danh khách hàng: {{EMAIL}}, {{ID}}, {{SHORT_ID}}, {{SUB_ID}}, {{TELEGRAM_ID}}.",
       "subThemeDir": "Thư mục giao diện Đăng ký",
       "subThemeDirDesc": "Đường dẫn tuyệt đối đến thư mục chứa mẫu tùy chỉnh (index.html/sub.html) cho trang đăng ký (ví dụ: /etc/3x-ui/sub_templates/my-theme/). Để trống để dùng trang mặc định.",
       "subThemeDirDocs": "Hướng dẫn mẫu ↗",

internal/web/translation/zh-CN.json

@@ -1117,13 +1117,13 @@
       "subClashUserAgentRegex": "Clash/Mihomo User-Agent 正则表达式",
       "subClashUserAgentRegexDesc": "用于与客户端 User-Agent 进行匹配，从而在标准订阅 URL 上识别 Clash/Mihomo 客户端的 Go RE2 正则表达式。留空则使用默认规则。更改后请重启面板。",
       "subTitle": "订阅标题",
-      "subTitleDesc": "在 VPN 客户端中显示的标题",
+      "subTitleDesc": "在 VPN 客户端中显示的标题。支持客户端身份令牌：{{EMAIL}}、{{ID}}、{{SHORT_ID}}、{{SUB_ID}}、{{TELEGRAM_ID}}。",
       "subSupportUrl": "支持链接",
-      "subSupportUrlDesc": "VPN 客户端中显示的技术支持链接",
+      "subSupportUrlDesc": "VPN 客户端中显示的技术支持链接。支持客户端身份令牌：{{EMAIL}}、{{ID}}、{{SHORT_ID}}、{{SUB_ID}}、{{TELEGRAM_ID}}。",
       "subProfileUrl": "个人资料链接",
-      "subProfileUrlDesc": "VPN 客户端中显示的网站链接",
+      "subProfileUrlDesc": "VPN 客户端中显示的网站链接。支持客户端身份令牌：{{EMAIL}}、{{ID}}、{{SHORT_ID}}、{{SUB_ID}}、{{TELEGRAM_ID}}。",
       "subAnnounce": "公告",
-      "subAnnounceDesc": "VPN 客户端中显示的公告文本",
+      "subAnnounceDesc": "VPN 客户端中显示的公告文本。支持客户端身份令牌：{{EMAIL}}、{{ID}}、{{SHORT_ID}}、{{SUB_ID}}、{{TELEGRAM_ID}}。",
       "subThemeDir": "订阅主题目录",
       "subThemeDirDesc": "包含自定义订阅页面模板 (index.html/sub.html) 的文件夹的绝对路径（例如 /etc/3x-ui/sub_templates/my-theme/）。留空则使用默认页面。",
       "subThemeDirDocs": "模板指南 ↗",

internal/web/translation/zh-TW.json

@@ -1117,13 +1117,13 @@
       "subClashUserAgentRegex": "Clash/Mihomo User-Agent 正規表示式",
       "subClashUserAgentRegexDesc": "用於與用戶端 User-Agent 進行比對，以便在標準訂閱 URL 上識別 Clash/Mihomo 用戶端的 Go RE2 正規表示式。留空則使用預設規則。變更後請重新啟動面板。",
       "subTitle": "訂閱標題",
-      "subTitleDesc": "在 VPN 客戶端中顯示的標題",
+      "subTitleDesc": "在 VPN 客戶端中顯示的標題。支援用戶端身分權杖：{{EMAIL}}、{{ID}}、{{SHORT_ID}}、{{SUB_ID}}、{{TELEGRAM_ID}}。",
       "subSupportUrl": "支援連結",
-      "subSupportUrlDesc": "VPN 用戶端中顯示的技術支援連結",
+      "subSupportUrlDesc": "VPN 用戶端中顯示的技術支援連結。支援用戶端身分權杖：{{EMAIL}}、{{ID}}、{{SHORT_ID}}、{{SUB_ID}}、{{TELEGRAM_ID}}。",
       "subProfileUrl": "個人資料連結",
-      "subProfileUrlDesc": "VPN 用戶端中顯示的網站連結",
+      "subProfileUrlDesc": "VPN 用戶端中顯示的網站連結。支援用戶端身分權杖：{{EMAIL}}、{{ID}}、{{SHORT_ID}}、{{SUB_ID}}、{{TELEGRAM_ID}}。",
       "subAnnounce": "公告",
-      "subAnnounceDesc": "VPN 用戶端中顯示的公告文字",
+      "subAnnounceDesc": "VPN 用戶端中顯示的公告文字。支援用戶端身分權杖：{{EMAIL}}、{{ID}}、{{SHORT_ID}}、{{SUB_ID}}、{{TELEGRAM_ID}}。",
       "subThemeDir": "訂閱主題目錄",
       "subThemeDirDesc": "包含自訂訂閱頁面範本 (index.html/sub.html) 的資料夾的絕對路徑（例如 /etc/3x-ui/sub_templates/my-theme/）。留空則使用預設頁面。",
       "subThemeDirDocs": "範本指南 ↗",