feat: 新增部分套餐账单查询（v0.6.4）

- 账单/用量查询：balance:kimi（Moonshot 开放平台余额）、NewAPI 中转站余额（accessToken+userId）、Kimi/智谱/MiniMax 套餐档位（5小时/7天）
- managed:kimi-code 走 Kimi Code OAuth 登录凭据查询订阅用量，access token 过期自动 refresh 并写回凭据（单 flight 锁 + 写回前重读防 CLI 竞态）
- 全屏「配置用量查询」页面：启用开关 / 自动检测 vs NewAPI 模板 / 超时与自动查询间隔 / 测试查询
- 供应商卡片紧凑用量行（切换使用左侧）+ 多档明细行；managed 供应商列表置顶（仅展示层）
- 用量显示中英文适配（five_hour→5小时、weekly_limit→7天，Rust 错误串本地化映射）
- 修复：usage_kinds serde rename 导致账单入口不显示；测试查询因 save 触发 loading 翻页卸载面板导致结果丢失（silent save）

src/i18n/en.ts

@@ -372,6 +372,47 @@ export const enTranslations: Record<TranslationKey, string> = {
   usageResetIn: "resets in {time}",
   usageResetDone: "reset",
   usageLoading: "Querying…",
+  usageQueryOk: "Query succeeded",
+  // Usage config panel (cc-switch style)
+  usageConfigTitle: "Configure Usage Query - {name}",
+  usageConfigBtn: "Configure usage query",
+  usageEnable: "Enable usage query",
+  usageTemplate: "Query template",
+  usageTemplateAuto: "Auto-detect",
+  usageTemplateNewapi: "NewAPI gateway",
+  usageAutoDetectHint: "Query balance / plan with the provider's API Key and Base URL",
+  usageNewapiHint: "Query a NewAPI / OneAPI gateway balance (requires a web-console Access Token, not the sk- inference key)",
+  usageOAuthManagedHint: "Official OAuth managed: queries the subscription with your Kimi Code login credentials",
+  usageDetectedKinds: "Detected query kinds",
+  usageNoKinds: "Not detected (switch to the NewAPI template to configure manually)",
+  usageBaseUrl: "Query URL (Base URL)",
+  usageAccessToken: "Access Token",
+  usageAccessTokenPlaceholder: "Access Token from the web console",
+  usageAccessTokenHint: "Generated in the NewAPI web console (Personal Settings → Access Token) — NOT the sk- inference key",
+  usageUserId: "User ID",
+  usageUserIdPlaceholder: "NewAPI user id (numeric)",
+  usageUserIdHint: "User id from the web console profile page, sent as the New-Api-User header",
+  usageAutoInterval: "Auto query interval (minutes)",
+  usageAutoIntervalHint: "0 = query only on page open or manual refresh",
+  usageTimeout: "Timeout (seconds)",
+  usageTimeoutHint: "0 = use the default (8 seconds)",
+  usageSupportedVars: "Supported variables",
+  usageBack: "Back",
+  usageNoKindsHint: "No auto-detected query type for this provider. Switch to the NewAPI template to configure manually, or add a custom query script (coming soon).",
+  usageSwitchToNewapi: "Switch to NewAPI template",
+  usageUnsupportedProvider: "This provider is not supported by auto query",
+  usageTier5h: "5-hour",
+  usageTierWeekly: "Weekly",
+  usageErrNoKey: "No API key configured",
+  usageErrDisabled: "Usage query is disabled in the config panel",
+  usageErrLoginExpired: "Kimi Code login expired and auto-refresh failed; run `kimi login` again",
+  usageErrNoOauth: "No Kimi Code OAuth credentials found; run `kimi login` first",
+  usageErrNewapiCreds: "The NewAPI template requires Access Token and User ID",
+  usageTestQuery: "Test query",
+  usageUpdatedAgo: "{time} ago",
+  usageMinAgo: "{n} min ago",
+  usageHourAgo: "{n} h ago",
+  usageDayAgo: "{n} d ago",
 
   // Billing mode (subscription / pay-as-you-go)
   billingTabSubscription: "Subscription",