chore: remove Vercel sync feature (UI, admin API, entrypoint)

Drop the Vercel Sync admin page and its backend (internal/httpapi/admin/vercel,
webui/src/features/vercel), unregister its routes, remove the nav item and
locale keys, and delete the Vercel Go entrypoint api/index.go. Deployment is
docker-image only.

The inert internal stream-prepare plumbing (chat/vercel_stream.go and the
__stream_prepare branches) is left in place; it never executes without the
Vercel Node bridge and removing it would touch concurrency-sensitive lease
code in the core streaming handlers.

api/index.go

@@ -1,20 +0,0 @@
-package handler
-
-import (
-	"net/http"
-	"sync"
-
-	"ds2api/app"
-)
-
-var (
-	once sync.Once
-	h    http.Handler
-)
-
-func Handler(w http.ResponseWriter, r *http.Request) {
-	once.Do(func() {
-		h = app.NewHandler()
-	})
-	h.ServeHTTP(w, r)
-}

internal/httpapi/admin/handler.go

@@ -13,7 +13,6 @@ import (
 	adminrawsamples "ds2api/internal/httpapi/admin/rawsamples"
 	adminsettings "ds2api/internal/httpapi/admin/settings"
 	adminshared "ds2api/internal/httpapi/admin/shared"
-	adminvercel "ds2api/internal/httpapi/admin/vercel"
 	adminversion "ds2api/internal/httpapi/admin/version"
 )
 
@@ -33,7 +32,6 @@ func RegisterRoutes(r chi.Router, h *Handler) {
 	settingsHandler := &adminsettings.Handler{Store: deps.Store, Pool: deps.Pool, DS: deps.DS, OpenAI: deps.OpenAI, ChatHistory: deps.ChatHistory}
 	proxiesHandler := &adminproxies.Handler{Store: deps.Store, Pool: deps.Pool, DS: deps.DS, OpenAI: deps.OpenAI, ChatHistory: deps.ChatHistory}
 	rawSamplesHandler := &adminrawsamples.Handler{Store: deps.Store, Pool: deps.Pool, DS: deps.DS, OpenAI: deps.OpenAI, ChatHistory: deps.ChatHistory}
-	vercelHandler := &adminvercel.Handler{Store: deps.Store, Pool: deps.Pool, DS: deps.DS, OpenAI: deps.OpenAI, ChatHistory: deps.ChatHistory}
 	historyHandler := &adminhistory.Handler{Store: deps.Store, Pool: deps.Pool, DS: deps.DS, OpenAI: deps.OpenAI, ChatHistory: deps.ChatHistory}
 	devCaptureHandler := &admindevcapture.Handler{Store: deps.Store, Pool: deps.Pool, DS: deps.DS, OpenAI: deps.OpenAI, ChatHistory: deps.ChatHistory}
 	versionHandler := &adminversion.Handler{Store: deps.Store, Pool: deps.Pool, DS: deps.DS, OpenAI: deps.OpenAI, ChatHistory: deps.ChatHistory}
@@ -47,7 +45,6 @@ func RegisterRoutes(r chi.Router, h *Handler) {
 		adminproxies.RegisterRoutes(pr, proxiesHandler)
 		adminaccounts.RegisterRoutes(pr, accountsHandler)
 		adminrawsamples.RegisterRoutes(pr, rawSamplesHandler)
-		adminvercel.RegisterRoutes(pr, vercelHandler)
 		admindevcapture.RegisterRoutes(pr, devCaptureHandler)
 		adminhistory.RegisterRoutes(pr, historyHandler)
 		adminversion.RegisterRoutes(pr, versionHandler)

webui/src/layout/DashboardShell.jsx

@@ -3,7 +3,6 @@ import { useLocation, useNavigate } from 'react-router-dom'
 import {
     LayoutDashboard,
     Upload,
-    Cloud,
     Settings as SettingsIcon,
     LogOut,
     Menu,
@@ -19,7 +18,6 @@ import AccountManagerContainer from '../features/account/AccountManagerContainer
 import ApiTesterContainer from '../features/apiTester/ApiTesterContainer'
 import ChatHistoryContainer from '../features/chatHistory/ChatHistoryContainer'
 import BatchImport from '../components/BatchImport'
-import VercelSyncContainer from '../features/vercel/VercelSyncContainer'
 import SettingsContainer from '../features/settings/SettingsContainer'
 import ProxyManagerContainer from '../features/proxy/ProxyManagerContainer'
 import LanguageToggle from '../components/LanguageToggle'
@@ -37,7 +35,6 @@ export default function DashboardShell({ token, onLogout, config, fetchConfig, s
         { id: 'test', label: t('nav.test.label'), icon: Server, description: t('nav.test.desc') },
         { id: 'history', label: t('nav.history.label'), icon: History, description: t('nav.history.desc') },
         { id: 'import', label: t('nav.import.label'), icon: Upload, description: t('nav.import.desc') },
-        { id: 'vercel', label: t('nav.vercel.label'), icon: Cloud, description: t('nav.vercel.desc') },
         { id: 'settings', label: t('nav.settings.label'), icon: SettingsIcon, description: t('nav.settings.desc') },
     ]
 
@@ -105,8 +102,6 @@ export default function DashboardShell({ token, onLogout, config, fetchConfig, s
                 return <ChatHistoryContainer onMessage={showMessage} authFetch={authFetch} />
             case 'import':
                 return <BatchImport onRefresh={fetchConfig} onMessage={showMessage} authFetch={authFetch} />
-            case 'vercel':
-                return <VercelSyncContainer onMessage={showMessage} authFetch={authFetch} isVercel={isVercel} config={config} />
             case 'settings':
                 return <SettingsContainer onRefresh={fetchConfig} onMessage={showMessage} authFetch={authFetch} onForceLogout={onForceLogout} isVercel={isVercel} />
             default:

webui/src/locales/en.json

@@ -25,10 +25,6 @@
             "label": "Batch Import",
             "desc": "Bulk import account configuration"
         },
-        "vercel": {
-            "label": "Vercel Sync",
-            "desc": "Sync configuration to Vercel"
-        },
         "settings": {
             "label": "Settings",
             "desc": "Edit runtime and security settings online"
@@ -448,41 +444,5 @@
         "adminPortal": "DS2API admin portal",
         "signInFailed": "Sign-in failed.",
         "networkError": "Network error: {error}"
-    },
-    "vercel": {
-        "tokenRequired": "Vercel access token is required.",
-        "projectRequired": "Project ID is required.",
-        "syncFailed": "Sync failed.",
-        "networkError": "Network error.",
-        "title": "Vercel Deployment",
-        "description": "Sync the current keys and accounts directly to Vercel environment variables.",
-        "tokenLabel": "Vercel Access Token",
-        "getToken": "Get token",
-        "tokenPlaceholderPreconfig": "Using preconfigured token",
-        "tokenPlaceholder": "Enter Vercel access token",
-        "projectIdLabel": "Project ID",
-        "projectIdHint": "Find it in Project Settings → General.",
-        "teamIdLabel": "Team ID",
-        "optional": "optional",
-        "syncing": "Syncing...",
-        "syncRedeploy": "Sync & redeploy",
-        "redeployHint": "This triggers a Vercel redeploy and usually takes 30–60 seconds.",
-        "syncSucceeded": "Sync succeeded",
-        "syncFailedLabel": "Sync failed",
-        "openDeployment": "Open deployment",
-        "statusSynced": "Synced",
-        "statusNotSynced": "Not synced",
-        "statusNeverSynced": "Never synced",
-        "lastSyncTime": "Last sync: {time}",
-        "draftDiffers": "Frontend draft differs from env config. Click Sync & redeploy.",
-        "pollPaused": "Status polling paused after {count} failures.",
-        "manualRefresh": "Refresh manually",
-        "howItWorks": "How it works",
-        "steps": {
-            "one": "The current configuration (keys and accounts) is exported as JSON.",
-            "two": "The JSON is Base64-encoded for safe formatting.",
-            "three": "Update the env var in Vercel:",
-            "four": "Trigger a redeploy to apply the updated environment variables."
-        }
     }
 }

webui/src/locales/ru.json

@@ -25,10 +25,6 @@
             "label": "Массовый импорт",
             "desc": "Массовый импорт конфигурации аккаунтов"
         },
-        "vercel": {
-            "label": "Синхронизация Vercel",
-            "desc": "Синхронизация конфигурации в Vercel"
-        },
         "settings": {
             "label": "Настройки",
             "desc": "Онлайн-редактирование настроек среды выполнения и безопасности"
@@ -448,41 +444,5 @@
         "adminPortal": "Портал администратора DS2API",
         "signInFailed": "Не удалось войти.",
         "networkError": "Ошибка сети: {error}"
-    },
-    "vercel": {
-        "tokenRequired": "Требуется токен доступа Vercel.",
-        "projectRequired": "Требуется ID проекта.",
-        "syncFailed": "Синхронизация не выполнена.",
-        "networkError": "Ошибка сети.",
-        "title": "Развёртывание Vercel",
-        "description": "Синхронизируйте текущие ключи и аккаунты напрямую в переменные окружения Vercel.",
-        "tokenLabel": "Токен доступа Vercel",
-        "getToken": "Получить токен",
-        "tokenPlaceholderPreconfig": "Используется предварительно заданный токен",
-        "tokenPlaceholder": "Введите токен доступа Vercel",
-        "projectIdLabel": "ID проекта",
-        "projectIdHint": "Найдите его в Project Settings → General.",
-        "teamIdLabel": "ID команды",
-        "optional": "необязательно",
-        "syncing": "Синхронизация...",
-        "syncRedeploy": "Синхронизировать и переразвернуть",
-        "redeployHint": "Это запускает переразвёртывание Vercel и обычно занимает 30–60 секунд.",
-        "syncSucceeded": "Синхронизация успешна",
-        "syncFailedLabel": "Синхронизация не выполнена",
-        "openDeployment": "Открыть развёртывание",
-        "statusSynced": "Синхронизировано",
-        "statusNotSynced": "Не синхронизировано",
-        "statusNeverSynced": "Никогда не синхронизировалось",
-        "lastSyncTime": "Последняя синхронизация: {time}",
-        "draftDiffers": "Черновик фронтенда отличается от конфигурации env. Нажмите «Синхронизировать и переразвернуть».",
-        "pollPaused": "Опрос статуса приостановлен после {count} сбоев.",
-        "manualRefresh": "Обновить вручную",
-        "howItWorks": "Как это работает",
-        "steps": {
-            "one": "Текущая конфигурация (ключи и аккаунты) экспортируется как JSON.",
-            "two": "JSON кодируется в Base64 для безопасного форматирования.",
-            "three": "Обновите переменную окружения в Vercel:",
-            "four": "Запустите переразвёртывание, чтобы применить обновлённые переменные окружения."
-        }
     }
 }