feat(routing): add panel-only comment field to routing rules (#6361)

Can annotate rules with a human-readable note for easier management.
The comment is stripped before sending the config to xray-core (same
pattern as the existing 'enabled' flag).

Backend: stripDisabledRules now removes 'comment' from generated config.
Frontend: input field in RuleFormModal, column in desktop table, chip
with tooltip in mobile card list. Schema and type definitions updated.

frontend/src/pages/xray/routing/RuleFormModal.tsx

@@ -13,6 +13,7 @@ import { buildRemarkByTag, formatInboundTag, isApiRule } from './helpers';
 
 export interface RoutingRule {
   enabled?: boolean;
+  comment?: string;
   type?: string;
   domain?: string | string[];
   ip?: string | string[];
@@ -42,6 +43,7 @@ interface RuleFormModalProps {
 
 const initialForm = (): RuleFormValues => ({
   enabled: true,
+  comment: '',
   domain: '',
   ip: '',
   port: '',
@@ -104,6 +106,7 @@ export default function RuleFormModal({
     if (rule) {
       methods.reset({
         enabled: rule.enabled !== false,
+        comment: rule.comment || '',
         domain: Array.isArray(rule.domain) ? rule.domain.join(',') : rule.domain || '',
         ip: Array.isArray(rule.ip) ? rule.ip.join(',') : rule.ip || '',
         port: rule.port || '',
@@ -132,6 +135,7 @@ export default function RuleFormModal({
     const built: Record<string, unknown> = {
       type: 'field',
       enabled: v.enabled,
+      comment: v.comment,
       domain: csv(v.domain),
       ip: csv(v.ip),
       port: v.port,
@@ -185,6 +189,10 @@ export default function RuleFormModal({
             <Switch disabled={isApiRule(rule ?? {})} />
           </FormField>
 
+          <FormField name="comment" label={t('comment')}>
+            <Input maxLength={200} showCount placeholder={t('comment')} />
+          </FormField>
+
           <FormField
             name="sourceIP"
             label={