- UI display: display_name first (#14358)

* - UI display: display_name first
  - Fallback: name
  - Technical identity: still name

  ### What changed

  - Added account display helpers and display_name state in user model:
      - flutter/lib/models/user_model.dart:16
  - Account/logout label now uses display_name (@name) when both exist:
      - flutter/lib/mobile/pages/settings_page.dart:689
      - flutter/lib/desktop/pages/desktop_setting_page.dart:2016
      - flutter/lib/desktop/pages/desktop_setting_page.dart:2135
  - Desktop Account info now shows both when applicable:
      - Display Name: ...
      - Username: ...
      - flutter/lib/desktop/pages/desktop_setting_page.dart:2039
  - Previously done group-list behavior remains:
      - group user list displays display_name with name fallback
      - flutter/lib/common/widgets/my_group.dart:187
  - Persistence path for display_name remains enabled (including group cache/submodule field):
      - libs/hbb_common/src/config.rs:2347
  - src/client.rs:2630
  - LoginRequest.my_name now resolves as:
      1. OPTION_DISPLAY_NAME (manual override)
      2. user_info.display_name
      3. user_info.name
      4. OS username fallback

* 1. GUID key (...Uninstall\{GUID}) is MSI-native metadata generated by Windows Installer.
  2. Non-GUID key (...Uninstall\RustDesk) is explicitly written by RustDesk’s MSI compatibility component in res/msi/Package/Components/Regs.wxs:44, populated by preprocess.py --arp from .github/workflows/
     flutter-build.yml:262.

  So they were not using the same EstimatedSize logic:

  - MSI GUID key: MSI-calculated size (KB).
  - RustDesk key: custom script value from res/msi/preprocess.py:339 (previously bytes, now fixed to KB).

  That mismatch is exactly why you saw different sizes.

* improve display name handling

  - Append (@username) when multiple users share the same display name
  - Trim whitespace from display_name before comparison and display
  - Add missing translate() for Logout button on desktop

Signed-off-by: 21pages <sunboeasy@gmail.com>

* group peer filter match both user's display name and user's name

Signed-off-by: 21pages <sunboeasy@gmail.com>

* case-insensitive search in group peer filter

Signed-off-by: 21pages <sunboeasy@gmail.com>

---------

Signed-off-by: 21pages <sunboeasy@gmail.com>
Co-authored-by: 21pages <sunboeasy@gmail.com>

flutter/lib/desktop/pages/desktop_setting_page.dart

@@ -2016,7 +2016,9 @@ class _AccountState extends State<_Account> {
 
   Widget accountAction() {
     return Obx(() => _Button(
-        gFFI.userModel.userName.value.isEmpty ? 'Login' : 'Logout',
+        gFFI.userModel.userName.value.isEmpty
+            ? 'Login'
+            : '${translate('Logout')} (${gFFI.userModel.accountLabelWithHandle})',
         () => {
               gFFI.userModel.userName.value.isEmpty
                   ? loginDialog()
@@ -2037,6 +2039,10 @@ class _AccountState extends State<_Account> {
           offstage: gFFI.userModel.userName.value.isEmpty,
           child: Column(
             children: [
+              if (gFFI.userModel.displayName.value.trim().isNotEmpty &&
+                  gFFI.userModel.displayName.value.trim() !=
+                      gFFI.userModel.userName.value.trim())
+                text('Display Name', gFFI.userModel.displayName.value.trim()),
               text('Username', gFFI.userModel.userName.value),
               // text('Group', gFFI.groupModel.groupName.value),
             ],
@@ -2130,7 +2136,9 @@ class _PluginState extends State<_Plugin> {
 
   Widget accountAction() {
     return Obx(() => _Button(
-        gFFI.userModel.userName.value.isEmpty ? 'Login' : 'Logout',
+        gFFI.userModel.userName.value.isEmpty
+            ? 'Login'
+            : '${translate('Logout')} (${gFFI.userModel.accountLabelWithHandle})',
         () => {
               gFFI.userModel.userName.value.isEmpty
                   ? loginDialog()