feat: add admin account page with logout and responsive address bar (#803)

- Add admin account tab to display current login method
- Support logout for admin password login only
- Show login method (password/user admin/disabled check)
- Improve address bar responsive layout with auto-wrap
- Update changelog for new features

🤖 Generated with [Claude Code](https://claude.com/claude-code)

Co-authored-by: Claude Opus 4.5 <noreply@anthropic.com>

frontend/src/components/AddressSelect.vue

@@ -230,7 +230,7 @@ watch([userJwt, isTelegram, () => settings.value.address], async () => {
 </script>
 
 <template>
-    <n-flex class="address-row" align="center" justify="center" :wrap="false">
+    <n-flex class="address-row" align="center" justify="center" :wrap="true">
         <n-select v-model:value="addressValue" :options="addressOptions" :size="size" filterable
             :loading="addressLoading" :placeholder="t('address')" @update:value="onAddressChange"
             class="address-select" />
@@ -244,16 +244,17 @@ watch([userJwt, isTelegram, () => settings.value.address], async () => {
 <style scoped>
 .address-row {
     width: 100%;
+    gap: 10px;
 }
 
 .address-select {
     min-width: 220px;
     max-width: 420px;
-    flex: 0 1 420px;
+    flex: 1 1 220px;
 }
 
 .address-copy {
-    margin-left: 10px;
     flex: 0 0 auto;
+    white-space: nowrap;
 }
 </style>