fix(flutter): 精简个人资料并修正保存文案

lib/l10n/app_localizations_zh.dart

@@ -429,7 +429,7 @@ class AppLocalizationsZh extends AppLocalizations {
   String get like => '喜欢';
 
   @override
-  String get save => '收藏';
+  String get save => '保存';
 
   @override
   String get comments => '评论';

lib/l10n/app_zh.arb

@@ -171,7 +171,7 @@
   "mute": "静音",
   "unmute": "取消静音",
   "like": "喜欢",
-  "save": "收藏",
+  "save": "保存",
   "comments": "评论",
   "share": "分享",
   "noComments": "还没有评论。",

lib/pages/account/account_profile_page.dart

@@ -23,7 +23,6 @@ import 'account_profile_logic.dart';
 
 const _avatarSize = 64.0;
 const _fieldGap = 14.0;
-const _datePadWidth = 2;
 
 /// 个人资料编辑页。
 class AccountProfilePage extends StatefulWidget {
@@ -37,7 +36,6 @@ class _AccountProfilePageState extends State<AccountProfilePage> {
   late final AccountProfileLogic _logic;
   final _nickname = TextEditingController();
   var _gender = 'unknown';
-  String? _birthday;
   bool _formReady = false;
 
   @override
@@ -163,8 +161,6 @@ class _AccountProfilePageState extends State<AccountProfilePage> {
           _nicknameField(l10n),
           const SizedBox(height: _fieldGap),
           _genderField(l10n),
-          const SizedBox(height: _fieldGap),
-          _birthdayField(l10n),
           if (_logic.error != null) _saveError(l10n),
           const SizedBox(height: 16),
           _saveButton(l10n),
@@ -200,26 +196,6 @@ class _AccountProfilePageState extends State<AccountProfilePage> {
     },
   );
 
-  Widget _birthdayField(AppLocalizations l10n) => Column(
-    crossAxisAlignment: CrossAxisAlignment.start,
-    children: [
-      OutlinedButton.icon(
-        key: const Key('account-birthday'),
-        onPressed: _pickBirthday,
-        icon: const Icon(Icons.cake_outlined),
-        label: Text(_birthday ?? l10n.accountSelectBirthday),
-      ),
-      const SizedBox(height: 6),
-      Text(
-        l10n.accountBirthdayHint,
-        style: const TextStyle(
-          color: AppColors.muted,
-          fontSize: AppDimens.caption,
-        ),
-      ),
-    ],
-  );
-
   Widget _saveError(AppLocalizations l10n) => Padding(
     padding: const EdgeInsets.only(top: 8),
     child: Text(
@@ -307,24 +283,8 @@ class _AccountProfilePageState extends State<AccountProfilePage> {
     ),
   );
 
-  Future<void> _pickBirthday() async {
-    final value = await showDatePicker(
-      context: context,
-      initialDate: DateTime(2000),
-      firstDate: DateTime(1900),
-      lastDate: DateTime.now(),
-    );
-    if (value != null && mounted) {
-      setState(() => _birthday = _formatDate(value));
-    }
-  }
-
   Future<void> _save() async {
-    final ok = await _logic.save(
-      nickname: _nickname.text,
-      gender: _gender,
-      birthday: _birthday,
-    );
+    final ok = await _logic.save(nickname: _nickname.text, gender: _gender);
     if (!ok || !mounted) return;
     ScaffoldMessenger.of(context).showSnackBar(
       SnackBar(content: Text(AppLocalizations.of(context)!.accountSaved)),
@@ -335,11 +295,6 @@ class _AccountProfilePageState extends State<AccountProfilePage> {
       const {'male', 'female', 'unknown'}.contains(value) ? value : 'unknown';
 }
 
-String _formatDate(DateTime value) =>
-    '${value.year.toString().padLeft(4, '0')}-'
-    '${value.month.toString().padLeft(_datePadWidth, '0')}-'
-    '${value.day.toString().padLeft(_datePadWidth, '0')}';
-
 class _AccountCard extends StatelessWidget {
   const _AccountCard({required this.child});