feat(app.js, i18n): enforce required base URL for Codex API configuration

- Updated the Codex API configuration modals to mark the Base URL field as required.
- Added validation to ensure the Base URL is provided before submission, with appropriate error notifications.
- Updated internationalization strings to reflect the change in the Base URL label from "Optional" to "Required" in both English and Chinese.

app.js

@@ -2961,7 +2961,7 @@ class CLIProxyManager {
             </div>
             <div class="form-group">
                 <label for="new-codex-url">${i18n.t('ai_providers.codex_add_modal_url_label')}</label>
-                <input type="text" id="new-codex-url" placeholder="${i18n.t('ai_providers.codex_add_modal_url_placeholder')}">
+                <input type="text" id="new-codex-url" placeholder="${i18n.t('ai_providers.codex_add_modal_url_placeholder')}" required>
             </div>
             <div class="form-group">
                 <label for="new-codex-proxy">${i18n.t('ai_providers.codex_add_modal_proxy_label')}</label>
@@ -2994,6 +2994,10 @@ class CLIProxyManager {
             this.showNotification(i18n.t('notification.field_required'), 'error');
             return;
         }
+        if (!baseUrl) {
+            this.showNotification(i18n.t('notification.codex_base_url_required'), 'error');
+            return;
+        }
 
         try {
             const data = await this.makeRequest('/codex-api-key');
@@ -3030,7 +3034,7 @@ class CLIProxyManager {
             </div>
             <div class="form-group">
                 <label for="edit-codex-url">${i18n.t('ai_providers.codex_edit_modal_url_label')}</label>
-                <input type="text" id="edit-codex-url" value="${config['base-url'] || ''}">
+                <input type="text" id="edit-codex-url" value="${config['base-url'] || ''}" required>
             </div>
             <div class="form-group">
                 <label for="edit-codex-proxy">${i18n.t('ai_providers.codex_edit_modal_proxy_label')}</label>
@@ -3063,6 +3067,10 @@ class CLIProxyManager {
             this.showNotification(i18n.t('notification.field_required'), 'error');
             return;
         }
+        if (!baseUrl) {
+            this.showNotification(i18n.t('notification.codex_base_url_required'), 'error');
+            return;
+        }
 
         try {
             const listResponse = await this.makeRequest('/codex-api-key');

i18n.js

@@ -154,13 +154,13 @@ const i18n = {
             'ai_providers.codex_add_modal_title': '添加Codex API配置',
             'ai_providers.codex_add_modal_key_label': 'API密钥:',
             'ai_providers.codex_add_modal_key_placeholder': '请输入Codex API密钥',
-            'ai_providers.codex_add_modal_url_label': 'Base URL (可选):',
+            'ai_providers.codex_add_modal_url_label': 'Base URL (必填):',
             'ai_providers.codex_add_modal_url_placeholder': '例如: https://api.example.com',
             'ai_providers.codex_add_modal_proxy_label': '代理 URL (可选):',
             'ai_providers.codex_add_modal_proxy_placeholder': '例如: socks5://proxy.example.com:1080',
             'ai_providers.codex_edit_modal_title': '编辑Codex API配置',
             'ai_providers.codex_edit_modal_key_label': 'API密钥:',
-            'ai_providers.codex_edit_modal_url_label': 'Base URL (可选):',
+            'ai_providers.codex_edit_modal_url_label': 'Base URL (必填):',
             'ai_providers.codex_edit_modal_proxy_label': '代理 URL (可选):',
             'ai_providers.codex_delete_confirm': '确定要删除这个Codex配置吗？',
 
@@ -415,6 +415,7 @@ const i18n = {
             'notification.codex_config_added': 'Codex配置添加成功',
             'notification.codex_config_updated': 'Codex配置更新成功',
             'notification.codex_config_deleted': 'Codex配置删除成功',
+            'notification.codex_base_url_required': '请填写Codex Base URL',
             'notification.claude_config_added': 'Claude配置添加成功',
             'notification.claude_config_updated': 'Claude配置更新成功',
             'notification.claude_config_deleted': 'Claude配置删除成功',
@@ -612,13 +613,13 @@ const i18n = {
             'ai_providers.codex_add_modal_title': 'Add Codex API Configuration',
             'ai_providers.codex_add_modal_key_label': 'API Key:',
             'ai_providers.codex_add_modal_key_placeholder': 'Please enter Codex API key',
-            'ai_providers.codex_add_modal_url_label': 'Base URL (Optional):',
+            'ai_providers.codex_add_modal_url_label': 'Base URL (Required):',
             'ai_providers.codex_add_modal_url_placeholder': 'e.g.: https://api.example.com',
             'ai_providers.codex_add_modal_proxy_label': 'Proxy URL (Optional):',
             'ai_providers.codex_add_modal_proxy_placeholder': 'e.g.: socks5://proxy.example.com:1080',
             'ai_providers.codex_edit_modal_title': 'Edit Codex API Configuration',
             'ai_providers.codex_edit_modal_key_label': 'API Key:',
-            'ai_providers.codex_edit_modal_url_label': 'Base URL (Optional):',
+            'ai_providers.codex_edit_modal_url_label': 'Base URL (Required):',
             'ai_providers.codex_edit_modal_proxy_label': 'Proxy URL (Optional):',
             'ai_providers.codex_delete_confirm': 'Are you sure you want to delete this Codex configuration?',
 
@@ -872,6 +873,7 @@ const i18n = {
             'notification.codex_config_added': 'Codex configuration added successfully',
             'notification.codex_config_updated': 'Codex configuration updated successfully',
             'notification.codex_config_deleted': 'Codex configuration deleted successfully',
+            'notification.codex_base_url_required': 'Please enter the Codex Base URL',
             'notification.claude_config_added': 'Claude configuration added successfully',
             'notification.claude_config_updated': 'Claude configuration updated successfully',
             'notification.claude_config_deleted': 'Claude configuration deleted successfully',