fix(frontend): align Codex UA setting copy

frontend/src/i18n/locales/en/admin/settings.ts

@@ -475,8 +475,8 @@ export default {
         antigravityUserAgentVersionPlaceholder: '1.23.2',
         antigravityUserAgentVersionHint: 'Leave empty to use ANTIGRAVITY_USER_AGENT_VERSION or the built-in default 1.23.2; when set, the admin setting takes precedence.',
         openaiCodexUserAgent: 'OpenAI Codex UA',
-        openaiCodexUserAgentPlaceholder: 'codex_cli_rs/0.146.0 (Ubuntu 22.4.0; x86_64) xterm-256color',
-        openaiCodexUserAgentHint: 'The full Codex User-Agent used for all outbound requests, for customizing the OS / arch / terminal fingerprint. Leave empty to build the standard codex_cli_rs identity from the version below (recommended). If set, its version segment is still replaced by the version below, so the UA never stays pinned to whatever release you typed it on — under capacity pressure the upstream sheds load by client identity and drops stale or non-official identities first with server_is_overloaded.',
+        openaiCodexUserAgentPlaceholder: 'codex-tui/0.146.1 (Ubuntu 22.4.0; x86_64) WindowsTerminal (codex-tui; 0.146.1)',
+        openaiCodexUserAgentHint: 'The full Codex User-Agent used for all outbound requests, for customizing the OS / arch / terminal fingerprint. Leave empty to build the standard codex-tui identity from the version below (recommended). If set, both the leading and trailing version declarations are synchronized to the version below, so the UA never stays pinned to the release entered here — under capacity pressure the upstream sheds load by client identity and drops stale or non-official identities first with server_is_overloaded.',
         openaiCodexClientVersion: 'Codex client version',
         openaiCodexClientVersionPlaceholder: 'Leave empty to follow auto-sync',
         openaiCodexClientVersionHint: 'The Codex client version this gateway declares upstream, shared by the User-Agent and the version header. Leave empty to use the auto-synced latest stable release; setting a value pins it and stops following auto-sync.',

frontend/src/i18n/locales/zh/admin/settings.ts

@@ -468,8 +468,8 @@ export default {
         antigravityUserAgentVersionPlaceholder: '1.23.2',
         antigravityUserAgentVersionHint: '留空时使用 ANTIGRAVITY_USER_AGENT_VERSION 或内置默认值 1.23.2；填写后后台设置优先。',
         openaiCodexUserAgent: 'OpenAI Codex UA',
-        openaiCodexUserAgentPlaceholder: 'codex_cli_rs/0.146.0 (Ubuntu 22.4.0; x86_64) xterm-256color',
-        openaiCodexUserAgentHint: '出站统一使用的完整 Codex User-Agent，用于自定义 OS / 架构 / 终端指纹。留空则按下方版本号拼出标准 codex_cli_rs 形态（推荐）。填写后其版本段仍会被下方版本号覆盖，避免这条 UA 停在填写时的旧版本——上游在容量紧张时按客户端身份分优先级降载，陈旧或非官方形态的身份会被优先丢弃并回 server_is_overloaded。',
+        openaiCodexUserAgentPlaceholder: 'codex-tui/0.146.1 (Ubuntu 22.4.0; x86_64) WindowsTerminal (codex-tui; 0.146.1)',
+        openaiCodexUserAgentHint: '出站统一使用的完整 Codex User-Agent，用于自定义 OS / 架构 / 终端指纹。留空则按下方版本号拼出标准 codex-tui 形态（推荐）。填写后首段和尾部的版本号仍会被下方版本号同步覆盖，避免这条 UA 停在填写时的旧版本——上游在容量紧张时按客户端身份分优先级降载，陈旧或非官方形态的身份会被优先丢弃并回 server_is_overloaded。',
         openaiCodexClientVersion: 'Codex 客户端版本号',
         openaiCodexClientVersionPlaceholder: '留空则跟随自动同步',
         openaiCodexClientVersionHint: '网关对上游声明的 Codex 客户端版本号，User-Agent 与 version 头同源使用。留空表示使用自动同步到的官方最新稳定版；填写后固定为该版本，不再跟随同步。',