feat(cursor): 支持独立控制面账号登录

internal/backend/host.go

@@ -27,10 +27,11 @@ const healthPath = "/healthz"
 const tabServerBaseURL = "https://tab.leokun.cn"
 
 type Host struct {
-	store      *serverconfig.Store
-	listenAddr string
-	configs    *serverconfig.Manager
-	healthHTTP *http.Client
+	store            *serverconfig.Store
+	listenAddr       string
+	configs          *serverconfig.Manager
+	healthHTTP       *http.Client
+	controlPlaneAuth upstream.AuthorizationProvider
 
 	runMu      sync.RWMutex
 	httpServer *http.Server
@@ -40,7 +41,7 @@ type Host struct {
 	mux http.Handler
 }
 
-func NewHost(store *serverconfig.Store) (*Host, error) {
+func NewHost(store *serverconfig.Store, controlPlaneAuth upstream.AuthorizationProvider) (*Host, error) {
 	if store == nil {
 		return nil, fmt.Errorf("backend config store is required")
 	}
@@ -50,10 +51,11 @@ func NewHost(store *serverconfig.Store) (*Host, error) {
 	}
 	cfg := configs.Current()
 	host := &Host{
-		store:      store,
-		listenAddr: cfg.BackendListenAddr,
-		configs:    configs,
-		healthHTTP: newLoopbackHTTPClient(),
+		store:            store,
+		listenAddr:       cfg.BackendListenAddr,
+		configs:          configs,
+		healthHTTP:       newLoopbackHTTPClient(),
+		controlPlaneAuth: controlPlaneAuth,
 	}
 	if err := host.rebuild(cfg); err != nil {
 		return nil, err
@@ -515,15 +517,25 @@ func (host *Host) rebuildLocked(cfg serverconfig.Config) error {
 		server.POST("/aiserver.v1.DashboardService/GetManagedSkills",
 			server.Name("dashboard_get_managed_skills"),
 			server.ConnectUnary(),
-			server.Local(upstream.MockProtoAction(routeDeps, upstream.CompatRouteConfig{
-				Name:          "dashboard_get_managed_skills",
-				StatusCode:    http.StatusOK,
-				MockProtoType: "aiserver.v1.GetManagedSkillsResponse",
-				MockBuilder:   upstream.DashboardManagedSkillsMockBuilder,
-			})),
-			server.Upstream(upstream.DirectAction(routeDeps, upstream.CompatRouteConfig{
-				Name: "dashboard_get_managed_skills",
-			})),
+			server.Local(cursorControlPlaneAction(
+				host.controlPlaneAuth,
+				routeDeps,
+				"dashboard_get_managed_skills",
+				upstream.MockProtoAction(routeDeps, upstream.CompatRouteConfig{
+					Name:          "dashboard_get_managed_skills",
+					StatusCode:    http.StatusOK,
+					MockProtoType: "aiserver.v1.GetManagedSkillsResponse",
+					MockBuilder:   upstream.DashboardManagedSkillsMockBuilder,
+				}),
+			)),
+			server.Upstream(cursorControlPlaneAction(
+				host.controlPlaneAuth,
+				routeDeps,
+				"dashboard_get_managed_skills",
+				upstream.DirectAction(routeDeps, upstream.CompatRouteConfig{
+					Name: "dashboard_get_managed_skills",
+				}),
+			)),
 		),
 		server.POST("/aiserver.v1.DashboardService/GetMe",
 			server.Name("dashboard_get_me"),
@@ -590,7 +602,24 @@ func (host *Host) rebuildLocked(cfg serverconfig.Config) error {
 				Name: "dashboard_is_on_new_pricing",
 			})),
 		),
-		// tabServerUpstreamProcedure("/aiserver.v1.DashboardService/GetEffectiveUserPlugins", "dashboard_get_effective_user_plugins", server.ConnectUnary(), routeDeps),
+		cursorControlPlaneProcedure("/aiserver.v1.DashboardService/AddMarketplace", "dashboard_add_marketplace", server.ConnectUnary(), host.controlPlaneAuth, routeDeps),
+		cursorControlPlaneProcedure("/aiserver.v1.DashboardService/AddMcpServersFromPlugin", "dashboard_add_mcp_servers_from_plugin", server.ConnectUnary(), host.controlPlaneAuth, routeDeps),
+		cursorControlPlaneProcedure("/aiserver.v1.DashboardService/BatchGetPluginMcpConfig", "dashboard_batch_get_plugin_mcp_config", server.ConnectUnary(), host.controlPlaneAuth, routeDeps),
+		cursorControlPlaneProcedure("/aiserver.v1.DashboardService/GetAvailableMcpServers", "dashboard_get_available_mcp_servers", server.ConnectUnary(), host.controlPlaneAuth, routeDeps),
+		cursorControlPlaneProcedure("/aiserver.v1.DashboardService/GetEffectiveUserPlugins", "dashboard_get_effective_user_plugins", server.ConnectUnary(), host.controlPlaneAuth, routeDeps),
+		cursorControlPlaneProcedure("/aiserver.v1.DashboardService/GetPlugin", "dashboard_get_plugin", server.ConnectUnary(), host.controlPlaneAuth, routeDeps),
+		cursorControlPlaneProcedure("/aiserver.v1.DashboardService/GetPluginMcpConfig", "dashboard_get_plugin_mcp_config", server.ConnectUnary(), host.controlPlaneAuth, routeDeps),
+		cursorControlPlaneProcedure("/aiserver.v1.DashboardService/InstallUserPlugin", "dashboard_install_user_plugin", server.ConnectUnary(), host.controlPlaneAuth, routeDeps),
+		cursorControlPlaneProcedure("/aiserver.v1.DashboardService/ListMarketplacePlugins", "dashboard_list_marketplace_plugins", server.ConnectUnary(), host.controlPlaneAuth, routeDeps),
+		cursorControlPlaneProcedure("/aiserver.v1.DashboardService/ListMarketplaces", "dashboard_list_marketplaces", server.ConnectUnary(), host.controlPlaneAuth, routeDeps),
+		cursorControlPlaneProcedure("/aiserver.v1.DashboardService/ListUserPluginInstalls", "dashboard_list_user_plugin_installs", server.ConnectUnary(), host.controlPlaneAuth, routeDeps),
+		cursorControlPlaneProcedure("/aiserver.v1.DashboardService/RefreshMarketplace", "dashboard_refresh_marketplace", server.ConnectUnary(), host.controlPlaneAuth, routeDeps),
+		cursorControlPlaneProcedure("/aiserver.v1.DashboardService/RegisterMarketplaceAndPlugins", "dashboard_register_marketplace_and_plugins", server.ConnectUnary(), host.controlPlaneAuth, routeDeps),
+		cursorControlPlaneProcedure("/aiserver.v1.DashboardService/RemoveMarketplace", "dashboard_remove_marketplace", server.ConnectUnary(), host.controlPlaneAuth, routeDeps),
+		cursorControlPlaneProcedure("/aiserver.v1.DashboardService/ResolvePluginsByRef", "dashboard_resolve_plugins_by_ref", server.ConnectUnary(), host.controlPlaneAuth, routeDeps),
+		cursorControlPlaneProcedure("/aiserver.v1.DashboardService/UninstallUserPlugin", "dashboard_uninstall_user_plugin", server.ConnectUnary(), host.controlPlaneAuth, routeDeps),
+		cursorControlPlaneProcedure("/aiserver.v1.DashboardService/UpdateUserPluginInstall", "dashboard_update_user_plugin_install", server.ConnectUnary(), host.controlPlaneAuth, routeDeps),
+		cursorControlPlaneProcedure("/aiserver.v1.MCPRegistryService/GetKnownServers", "mcp_registry_get_known_servers", server.ConnectUnary(), host.controlPlaneAuth, routeDeps),
 		server.Any("/aiserver.v1.DashboardService/*",
 			server.Name("dashboard"),
 			server.HTTP(),
@@ -762,6 +791,52 @@ func tabServerUpstreamProcedure(pattern string, name string, protocol server.Rou
 	)
 }
 
+func cursorControlPlaneProcedure(
+	pattern string,
+	name string,
+	protocol server.RouteOption,
+	authorizationProvider upstream.AuthorizationProvider,
+	deps upstream.Dependencies,
+) server.Option {
+	notFound := func(ctx *server.Context) error {
+		http.NotFound(ctx.Writer, ctx.Request)
+		return nil
+	}
+	return server.POST(pattern,
+		server.Name(name),
+		protocol,
+		server.Local(cursorControlPlaneAction(authorizationProvider, deps, name, notFound)),
+		server.Upstream(cursorControlPlaneAction(
+			authorizationProvider,
+			deps,
+			name,
+			upstream.DirectAction(deps, upstream.CompatRouteConfig{Name: name}),
+		)),
+	)
+}
+
+func cursorControlPlaneAction(
+	authorizationProvider upstream.AuthorizationProvider,
+	deps upstream.Dependencies,
+	name string,
+	fallback server.HandlerFunc,
+) server.HandlerFunc {
+	direct := upstream.AuthenticatedDirectAction(deps, upstream.CompatRouteConfig{Name: name}, authorizationProvider)
+	return func(ctx *server.Context) error {
+		if authorizationProvider == nil || !authorizationProvider.SignedIn() {
+			return fallback(ctx)
+		}
+		if ctx == nil || ctx.Request == nil || ctx.Request.URL == nil {
+			return fmt.Errorf("Cursor 控制面请求上下文无效")
+		}
+		targetURL := *ctx.Request.URL
+		targetURL.Scheme = "https"
+		targetURL.Host = "api2.cursor.sh:443"
+		ctx.UpstreamURL = &targetURL
+		return direct(ctx)
+	}
+}
+
 type serverSystemSettings struct {
 	configs *serverconfig.Manager
 }

internal/backend/server/upstream/action.go

@@ -2,6 +2,7 @@ package upstream
 
 import (
 	"bytes"
+	"fmt"
 	"io"
 	"net/http"
 	"strings"
@@ -29,6 +30,34 @@ func DirectAction(deps Dependencies, cfg CompatRouteConfig) server.HandlerFunc {
 	}
 }
 
+// AuthenticatedDirectAction forwards a Cursor control-plane request with the
+// independent desktop account after the local-mode identity rewrite has run.
+func AuthenticatedDirectAction(deps Dependencies, cfg CompatRouteConfig, authorizationProvider AuthorizationProvider) server.HandlerFunc {
+	return func(ctx *server.Context) error {
+		reqCtx, _, err := newCompatRouteObjects(ctx, deps, cfg)
+		if err != nil {
+			return err
+		}
+		if reqCtx == nil || reqCtx.Request == nil {
+			return fmt.Errorf("Cursor 控制面请求上下文无效")
+		}
+		if authorizationProvider == nil {
+			return fmt.Errorf("Cursor 账号服务未初始化")
+		}
+		authorization, err := authorizationProvider.Authorization(reqCtx.Request.Context())
+		if err != nil {
+			return err
+		}
+		_, err = ForwardToUpstream(reqCtx, ForwardOptions{
+			PatchHeaders: func(headers http.Header) {
+				headers.Set("Authorization", authorization)
+				headers.Set("x-cursor-checksum", BuildCursorChecksum(authorization))
+			},
+		})
+		return err
+	}
+}
+
 func FixedStatusAction(deps Dependencies, cfg CompatRouteConfig) server.HandlerFunc {
 	return func(ctx *server.Context) error {
 		reqCtx, route, err := newCompatRouteObjects(ctx, deps, cfg)

internal/backend/server/upstream/types.go

@@ -20,6 +20,13 @@ type SystemSettingService interface {
 	ResolveModelAdapters(context.Context) ([]legacyruntime.ModelAdapterConfig, error)
 }
 
+// AuthorizationProvider supplies the independent Cursor account used only by
+// official control-plane requests such as Plugins, Skills, and MCP registry.
+type AuthorizationProvider interface {
+	Authorization(context.Context) (string, error)
+	SignedIn() bool
+}
+
 type HTTPClient interface {
 	Do(req *http.Request) (*http.Response, error)
 }

internal/bridge/proxy.go

@@ -24,6 +24,9 @@ type ModelAdapterTestResult = client.ModelAdapterTestResult
 // ModelAdapterTestResultsPayload 定义测速结果事件载荷。
 type ModelAdapterTestResultsPayload = client.ModelAdapterTestResultsPayload
 
+// CursorAccountStatus 是可安全展示给桌面前端的独立 Cursor 账号状态。
+type CursorAccountStatus = client.CursorAccountStatus
+
 // LicenseActionRequest 定义了当前模块中的 LicenseActionRequest 类型。
 type LicenseActionRequest = client.LicenseActionRequest
 
@@ -91,6 +94,21 @@ func (s *ProxyService) SaveUserConfig(cfg UserConfig) error {
 	return s.core.SaveUserConfig(cfg)
 }
 
+// GetCursorAccountStatus 返回 cursor-byok 独立 Cursor 账号的脱敏状态。
+func (s *ProxyService) GetCursorAccountStatus() CursorAccountStatus {
+	return s.core.GetCursorAccountStatus()
+}
+
+// StartCursorAccountLogin 打开官方浏览器登录并异步等待结果。
+func (s *ProxyService) StartCursorAccountLogin() (CursorAccountStatus, error) {
+	return s.core.StartCursorAccountLogin()
+}
+
+// DisconnectCursorAccount 只断开 cursor-byok 自己的账号。
+func (s *ProxyService) DisconnectCursorAccount() (CursorAccountStatus, error) {
+	return s.core.DisconnectCursorAccount()
+}
+
 // TestModelAdapter 用于处理与 TestModelAdapter 相关的逻辑。
 func (s *ProxyService) TestModelAdapter(adapter ModelAdapterConfig) (ModelAdapterTestResult, error) {
 	return s.core.TestModelAdapter(adapter)

internal/client/cursor_account.go

@@ -0,0 +1,35 @@
+package client
+
+import (
+	"context"
+	"fmt"
+	"time"
+
+	"cursor/internal/cursoraccount"
+)
+
+type CursorAccountStatus = cursoraccount.Status
+
+func (s *ProxyService) GetCursorAccountStatus() CursorAccountStatus {
+	if s == nil || s.cursorAccount == nil {
+		return CursorAccountStatus{State: cursoraccount.StateSignedOut}
+	}
+	ctx, cancel := context.WithTimeout(context.Background(), 5*time.Second)
+	defer cancel()
+	s.cursorAccount.EnsureEmail(ctx)
+	return s.cursorAccount.Status()
+}
+
+func (s *ProxyService) StartCursorAccountLogin() (CursorAccountStatus, error) {
+	if s == nil || s.cursorAccount == nil {
+		return CursorAccountStatus{State: cursoraccount.StateError}, fmt.Errorf("Cursor 账号服务未初始化")
+	}
+	return s.cursorAccount.StartLogin()
+}
+
+func (s *ProxyService) DisconnectCursorAccount() (CursorAccountStatus, error) {
+	if s == nil || s.cursorAccount == nil {
+		return CursorAccountStatus{State: cursoraccount.StateSignedOut}, nil
+	}
+	return s.cursorAccount.Disconnect()
+}

internal/client/lifecycle.go

@@ -265,6 +265,9 @@ func (s *ProxyService) ShutdownForQuit() {
 			finalErr = errors.Join(finalErr, err)
 		}
 	}
+	if s.cursorAccount != nil {
+		s.cursorAccount.Shutdown()
+	}
 	if finalErr != nil {
 		s.setLastError(finalErr)
 	}

internal/client/service.go

@@ -4,6 +4,7 @@ import (
 	"context"
 	"fmt"
 	"net/http"
+	"path/filepath"
 	"sync"
 	"time"
 
@@ -11,6 +12,7 @@ import (
 	backend "cursor/internal/backend"
 	serverconfig "cursor/internal/backend/server/config"
 	"cursor/internal/certs"
+	"cursor/internal/cursoraccount"
 	"cursor/internal/logger"
 	"cursor/internal/mitm"
 	"cursor/internal/netproxy"
@@ -35,6 +37,8 @@ type ProxyService struct {
 	certManager *certs.Manager
 	// backendHost 表示当前嵌入式 backend 服务。
 	backendHost *backend.Host
+	// cursorAccount 持有仅供插件、Skills 和 MCP 控制面使用的真实 Cursor 身份。
+	cursorAccount *cursoraccount.Manager
 
 	// mu 表示当前声明中的 mu。
 	mu sync.RWMutex
@@ -84,8 +88,12 @@ func NewProxyService(proxy *mitm.ProxyServer, certManager *certs.Manager, caCert
 		publicClient:     netproxy.NewHTTPClient(publicAPITimeout),
 		modelTestResults: make(map[string]ModelAdapterTestResult),
 	}
+	service.cursorAccount = cursoraccount.NewManager(
+		filepath.Join(appdata.DataRootPath(), "cursor-account.json"),
+		netproxy.NewHTTPClient(publicAPITimeout),
+	)
 	service.store = serverconfig.NewStore(service.configPath, service.logsRoot)
-	host, err := backend.NewHost(service.store)
+	host, err := backend.NewHost(service.store, service.cursorAccount)
 	if err != nil {
 		logger.Errorf("init backend host failed: %v", err)
 	} else {
@@ -101,7 +109,7 @@ func (s *ProxyService) ensureBackendHost() error {
 	if s.backendHost != nil {
 		return nil
 	}
-	host, err := backend.NewHost(s.store)
+	host, err := backend.NewHost(s.store, s.cursorAccount)
 	if err != nil {
 		return err
 	}

internal/cursoraccount/manager.go

@@ -0,0 +1,589 @@
+package cursoraccount
+
+import (
+	"bytes"
+	"context"
+	"crypto/rand"
+	"crypto/sha256"
+	"encoding/base64"
+	"encoding/json"
+	"errors"
+	"fmt"
+	"io"
+	"net/http"
+	"net/url"
+	"os"
+	"path/filepath"
+	"strings"
+	"sync"
+	"time"
+
+	"cursor/gen/aiserverv1"
+	"cursor/internal/backend/server/upstream"
+
+	"github.com/google/uuid"
+	"github.com/pkg/browser"
+	"google.golang.org/protobuf/proto"
+)
+
+const (
+	StateSignedOut = "signed_out"
+	StateWaiting   = "waiting"
+	StateSignedIn  = "signed_in"
+	StateError     = "error"
+
+	websiteURL    = "https://cursor.com"
+	backendURL    = "https://api2.cursor.sh"
+	authClientID  = "KbZUR41cY7W6zRSdpSUJ7I7mLYBKOCmB"
+	loginTimeout  = 10 * time.Minute
+	pollInterval  = time.Second
+	refreshMargin = 2 * time.Minute
+)
+
+var ErrNotSignedIn = errors.New("尚未在 cursor-byok 中登录 Cursor 账号")
+
+// Status 是可安全返回给前端的脱敏账号状态。
+type Status struct {
+	State  string `json:"state"`
+	AuthID string `json:"authId"`
+	Email  string `json:"email"`
+	Error  string `json:"error"`
+}
+
+type credentials struct {
+	AccessToken  string `json:"accessToken"`
+	RefreshToken string `json:"refreshToken"`
+	AuthID       string `json:"authId"`
+	Email        string `json:"email,omitempty"`
+}
+
+type pollResponse struct {
+	AccessToken  string `json:"accessToken"`
+	RefreshToken string `json:"refreshToken"`
+	AuthID       string `json:"authId"`
+}
+
+type refreshResponse struct {
+	AccessToken  string `json:"access_token"`
+	RefreshToken string `json:"refresh_token"`
+	ShouldLogout bool   `json:"shouldLogout"`
+}
+
+// Manager 持有 cursor-byok 自己的 Cursor 登录态，不读写 Cursor 客户端状态库。
+type Manager struct {
+	path   string
+	client *http.Client
+
+	mu              sync.RWMutex
+	credentials     credentials
+	state           string
+	lastError       string
+	loginCancel     context.CancelFunc
+	loginGeneration uint64
+
+	refreshMu sync.Mutex
+}
+
+func NewManager(path string, client *http.Client) *Manager {
+	if client == nil {
+		client = &http.Client{Timeout: 15 * time.Second}
+	}
+	manager := &Manager{
+		path:   strings.TrimSpace(path),
+		client: client,
+		state:  StateSignedOut,
+	}
+	if err := manager.load(); err != nil {
+		manager.state = StateError
+		manager.lastError = fmt.Sprintf("读取 Cursor 账号凭据失败: %v", err)
+	}
+	return manager
+}
+
+func (manager *Manager) Status() Status {
+	if manager == nil {
+		return Status{State: StateSignedOut}
+	}
+	manager.mu.RLock()
+	defer manager.mu.RUnlock()
+	return Status{
+		State:  manager.state,
+		AuthID: manager.credentials.AuthID,
+		Email:  manager.credentials.Email,
+		Error:  manager.lastError,
+	}
+}
+
+// EnsureEmail backfills a human-readable identity for credentials saved by
+// builds that only persisted authId. Profile lookup failure does not invalidate
+// an otherwise usable control-plane login.
+func (manager *Manager) EnsureEmail(ctx context.Context) {
+	if manager == nil || !manager.SignedIn() {
+		return
+	}
+	current, generation := manager.snapshotCredentials()
+	if strings.TrimSpace(current.Email) != "" {
+		return
+	}
+	authorization, err := manager.Authorization(ctx)
+	if err != nil {
+		return
+	}
+	profile, err := manager.fetchProfile(ctx, authorization)
+	if err != nil || strings.TrimSpace(profile.GetEmail()) == "" {
+		return
+	}
+	current, currentGeneration := manager.snapshotCredentials()
+	if currentGeneration != generation {
+		return
+	}
+	current.Email = strings.TrimSpace(profile.GetEmail())
+	_ = manager.commitCredentials(generation, current)
+}
+
+func (manager *Manager) SignedIn() bool {
+	if manager == nil {
+		return false
+	}
+	manager.mu.RLock()
+	defer manager.mu.RUnlock()
+	return manager.state == StateSignedIn && strings.TrimSpace(manager.credentials.AccessToken) != ""
+}
+
+// StartLogin 启动官方浏览器 PKCE 登录，并在后台等待登录结果。
+func (manager *Manager) StartLogin() (Status, error) {
+	if manager == nil {
+		return Status{State: StateError}, fmt.Errorf("Cursor 账号服务未初始化")
+	}
+	verifierBytes := make([]byte, 32)
+	if _, err := rand.Read(verifierBytes); err != nil {
+		return manager.Status(), fmt.Errorf("生成 Cursor 登录校验码失败: %w", err)
+	}
+	verifier := base64.RawURLEncoding.EncodeToString(verifierBytes)
+	challengeBytes := sha256.Sum256([]byte(verifier))
+	challenge := base64.RawURLEncoding.EncodeToString(challengeBytes[:])
+	loginID := uuid.NewString()
+
+	loginURL, err := buildLoginURL(loginID, challenge)
+	if err != nil {
+		return manager.Status(), err
+	}
+	ctx, cancel := context.WithTimeout(context.Background(), loginTimeout)
+
+	manager.mu.Lock()
+	if manager.loginCancel != nil {
+		manager.loginCancel()
+	}
+	manager.loginGeneration++
+	generation := manager.loginGeneration
+	manager.loginCancel = cancel
+	manager.state = StateWaiting
+	manager.lastError = ""
+	manager.mu.Unlock()
+
+	if err := browser.OpenURL(loginURL); err != nil {
+		cancel()
+		manager.finishWithError(generation, fmt.Sprintf("打开 Cursor 登录页面失败: %v", err))
+		return manager.Status(), err
+	}
+
+	go manager.pollLogin(ctx, generation, loginID, verifier)
+	return manager.Status(), nil
+}
+
+// Disconnect 只清除 cursor-byok 自己保存的账号，不调用 Cursor 客户端 logout。
+func (manager *Manager) Disconnect() (Status, error) {
+	if manager == nil {
+		return Status{State: StateSignedOut}, nil
+	}
+	manager.mu.Lock()
+	manager.loginGeneration++
+	if manager.loginCancel != nil {
+		manager.loginCancel()
+		manager.loginCancel = nil
+	}
+	manager.credentials = credentials{}
+	manager.state = StateSignedOut
+	manager.lastError = ""
+	manager.mu.Unlock()
+
+	err := os.Remove(manager.path)
+	if err != nil && !errors.Is(err, os.ErrNotExist) {
+		manager.mu.Lock()
+		manager.state = StateError
+		manager.lastError = fmt.Sprintf("清除 Cursor 账号凭据失败: %v", err)
+		manager.mu.Unlock()
+		return manager.Status(), err
+	}
+	return manager.Status(), nil
+}
+
+func (manager *Manager) Shutdown() {
+	if manager == nil {
+		return
+	}
+	manager.mu.Lock()
+	manager.loginGeneration++
+	if manager.loginCancel != nil {
+		manager.loginCancel()
+		manager.loginCancel = nil
+	}
+	manager.mu.Unlock()
+}
+
+// Authorization 返回官方控制面请求使用的真实 Cursor Bearer 身份。
+func (manager *Manager) Authorization(ctx context.Context) (string, error) {
+	if manager == nil {
+		return "", ErrNotSignedIn
+	}
+	manager.refreshMu.Lock()
+	defer manager.refreshMu.Unlock()
+
+	creds, generation := manager.snapshotCredentials()
+	if strings.TrimSpace(creds.AccessToken) == "" {
+		return "", ErrNotSignedIn
+	}
+	if !tokenNeedsRefresh(creds.AccessToken, time.Now()) {
+		return bearer(creds.AccessToken), nil
+	}
+	if strings.TrimSpace(creds.RefreshToken) == "" {
+		manager.setAuthorizationError(generation, "Cursor 登录已过期，请重新登录")
+		return "", fmt.Errorf("Cursor 登录已过期且没有刷新令牌")
+	}
+
+	updated, shouldLogout, err := manager.refresh(ctx, creds)
+	if err != nil {
+		manager.setAuthorizationError(generation, fmt.Sprintf("刷新 Cursor 登录失败: %v", err))
+		return "", err
+	}
+	if shouldLogout {
+		manager.invalidateAuthorization(generation, "Cursor 登录已失效，请重新登录")
+		return "", ErrNotSignedIn
+	}
+	if err := manager.commitCredentials(generation, updated); err != nil {
+		return "", err
+	}
+	return bearer(updated.AccessToken), nil
+}
+
+func (manager *Manager) pollLogin(ctx context.Context, generation uint64, loginID string, verifier string) {
+	defer func() {
+		manager.mu.Lock()
+		if manager.loginGeneration == generation {
+			manager.loginCancel = nil
+		}
+		manager.mu.Unlock()
+	}()
+
+	for {
+		result, pending, err := manager.pollOnce(ctx, loginID, verifier)
+		if err == nil && !pending {
+			creds := credentials{
+				AccessToken:  strings.TrimSpace(result.AccessToken),
+				RefreshToken: strings.TrimSpace(result.RefreshToken),
+				AuthID:       strings.TrimSpace(result.AuthID),
+			}
+			if creds.AccessToken == "" {
+				manager.finishWithError(generation, "Cursor 登录响应缺少 access token")
+				return
+			}
+			if profile, profileErr := manager.fetchProfile(ctx, bearer(creds.AccessToken)); profileErr == nil {
+				creds.Email = strings.TrimSpace(profile.GetEmail())
+			}
+			_ = manager.commitCredentials(generation, creds)
+			return
+		}
+		if err != nil && !isRetryablePollError(err) {
+			manager.finishWithError(generation, fmt.Sprintf("Cursor 登录失败: %v", err))
+			return
+		}
+
+		select {
+		case <-ctx.Done():
+			if errors.Is(ctx.Err(), context.DeadlineExceeded) {
+				manager.finishWithError(generation, "Cursor 登录等待超时，请重试")
+			}
+			return
+		case <-time.After(pollInterval):
+		}
+	}
+}
+
+func (manager *Manager) fetchProfile(ctx context.Context, authorization string) (*aiserverv1.GetMeResponse, error) {
+	body, err := proto.Marshal(&aiserverv1.GetMeRequest{})
+	if err != nil {
+		return nil, err
+	}
+	req, err := http.NewRequestWithContext(ctx, http.MethodPost, backendURL+"/aiserver.v1.DashboardService/GetMe", bytes.NewReader(body))
+	if err != nil {
+		return nil, err
+	}
+	req.Header.Set("authorization", authorization)
+	req.Header.Set("x-cursor-checksum", upstream.BuildCursorChecksum(authorization))
+	req.Header.Set("content-type", "application/proto")
+	req.Header.Set("accept", "application/proto")
+	req.Header.Set("connect-protocol-version", "1")
+	resp, err := manager.client.Do(req)
+	if err != nil {
+		return nil, err
+	}
+	defer resp.Body.Close()
+	responseBody, err := io.ReadAll(io.LimitReader(resp.Body, 1024*1024))
+	if err != nil {
+		return nil, err
+	}
+	if resp.StatusCode < 200 || resp.StatusCode >= 300 {
+		return nil, fmt.Errorf("GetMe 返回 HTTP %d", resp.StatusCode)
+	}
+	profile := &aiserverv1.GetMeResponse{}
+	if err := proto.Unmarshal(responseBody, profile); err != nil {
+		return nil, err
+	}
+	return profile, nil
+}
+
+func (manager *Manager) pollOnce(ctx context.Context, loginID string, verifier string) (pollResponse, bool, error) {
+	endpoint, err := url.Parse(backendURL + "/auth/poll")
+	if err != nil {
+		return pollResponse{}, false, err
+	}
+	query := endpoint.Query()
+	query.Set("uuid", loginID)
+	query.Set("verifier", verifier)
+	endpoint.RawQuery = query.Encode()
+	req, err := http.NewRequestWithContext(ctx, http.MethodGet, endpoint.String(), nil)
+	if err != nil {
+		return pollResponse{}, false, err
+	}
+	resp, err := manager.client.Do(req)
+	if err != nil {
+		return pollResponse{}, false, err
+	}
+	defer resp.Body.Close()
+	if resp.StatusCode == http.StatusNotFound {
+		_, _ = io.Copy(io.Discard, io.LimitReader(resp.Body, 64*1024))
+		return pollResponse{}, true, nil
+	}
+	body, err := io.ReadAll(io.LimitReader(resp.Body, 1024*1024))
+	if err != nil {
+		return pollResponse{}, false, err
+	}
+	if resp.StatusCode < 200 || resp.StatusCode >= 300 {
+		return pollResponse{}, false, fmt.Errorf("登录服务返回 HTTP %d", resp.StatusCode)
+	}
+	result := pollResponse{}
+	if err := json.Unmarshal(body, &result); err != nil {
+		return pollResponse{}, false, fmt.Errorf("解析登录响应失败: %w", err)
+	}
+	return result, false, nil
+}
+
+func (manager *Manager) refresh(ctx context.Context, current credentials) (credentials, bool, error) {
+	payload, err := json.Marshal(map[string]string{
+		"grant_type":    "refresh_token",
+		"client_id":     authClientID,
+		"refresh_token": current.RefreshToken,
+	})
+	if err != nil {
+		return credentials{}, false, err
+	}
+	req, err := http.NewRequestWithContext(ctx, http.MethodPost, backendURL+"/oauth/token", bytes.NewReader(payload))
+	if err != nil {
+		return credentials{}, false, err
+	}
+	req.Header.Set("content-type", "application/json")
+	resp, err := manager.client.Do(req)
+	if err != nil {
+		return credentials{}, false, err
+	}
+	defer resp.Body.Close()
+	body, err := io.ReadAll(io.LimitReader(resp.Body, 1024*1024))
+	if err != nil {
+		return credentials{}, false, err
+	}
+	if resp.StatusCode < 200 || resp.StatusCode >= 300 {
+		return credentials{}, false, fmt.Errorf("刷新服务返回 HTTP %d", resp.StatusCode)
+	}
+	result := refreshResponse{}
+	if err := json.Unmarshal(body, &result); err != nil {
+		return credentials{}, false, fmt.Errorf("解析刷新响应失败: %w", err)
+	}
+	if result.ShouldLogout {
+		return credentials{}, true, nil
+	}
+	if strings.TrimSpace(result.AccessToken) == "" {
+		return credentials{}, false, fmt.Errorf("刷新响应缺少 access token")
+	}
+	current.AccessToken = strings.TrimSpace(result.AccessToken)
+	if strings.TrimSpace(result.RefreshToken) != "" {
+		current.RefreshToken = strings.TrimSpace(result.RefreshToken)
+	}
+	return current, false, nil
+}
+
+func (manager *Manager) load() error {
+	if manager.path == "" {
+		return fmt.Errorf("Cursor 账号凭据路径为空")
+	}
+	data, err := os.ReadFile(manager.path)
+	if errors.Is(err, os.ErrNotExist) {
+		return nil
+	}
+	if err != nil {
+		return err
+	}
+	loaded := credentials{}
+	if err := json.Unmarshal(data, &loaded); err != nil {
+		return err
+	}
+	loaded.AccessToken = strings.TrimSpace(loaded.AccessToken)
+	loaded.RefreshToken = strings.TrimSpace(loaded.RefreshToken)
+	loaded.AuthID = strings.TrimSpace(loaded.AuthID)
+	loaded.Email = strings.TrimSpace(loaded.Email)
+	if loaded.AccessToken == "" {
+		return nil
+	}
+	manager.credentials = loaded
+	manager.state = StateSignedIn
+	return nil
+}
+
+func (manager *Manager) save(value credentials) error {
+	if manager.path == "" {
+		return fmt.Errorf("Cursor 账号凭据路径为空")
+	}
+	if err := os.MkdirAll(filepath.Dir(manager.path), 0o700); err != nil {
+		return err
+	}
+	data, err := json.MarshalIndent(value, "", "  ")
+	if err != nil {
+		return err
+	}
+	tempPath := manager.path + ".tmp"
+	if err := os.WriteFile(tempPath, append(data, '\n'), 0o600); err != nil {
+		return err
+	}
+	if err := os.Chmod(tempPath, 0o600); err != nil {
+		_ = os.Remove(tempPath)
+		return err
+	}
+	if err := os.Rename(tempPath, manager.path); err != nil {
+		_ = os.Remove(tempPath)
+		return err
+	}
+	return os.Chmod(manager.path, 0o600)
+}
+
+func (manager *Manager) snapshotCredentials() (credentials, uint64) {
+	manager.mu.RLock()
+	defer manager.mu.RUnlock()
+	return manager.credentials, manager.loginGeneration
+}
+
+func (manager *Manager) finishWithError(generation uint64, message string) {
+	manager.mu.Lock()
+	defer manager.mu.Unlock()
+	if manager.loginGeneration != generation {
+		return
+	}
+	manager.state = StateError
+	manager.lastError = strings.TrimSpace(message)
+}
+
+func (manager *Manager) commitCredentials(generation uint64, value credentials) error {
+	manager.mu.Lock()
+	defer manager.mu.Unlock()
+	if manager.loginGeneration != generation {
+		return ErrNotSignedIn
+	}
+	if err := manager.save(value); err != nil {
+		manager.state = StateError
+		manager.lastError = fmt.Sprintf("保存 Cursor 登录凭据失败: %v", err)
+		return err
+	}
+	manager.credentials = value
+	manager.state = StateSignedIn
+	manager.lastError = ""
+	return nil
+}
+
+func (manager *Manager) setAuthorizationError(generation uint64, message string) {
+	manager.mu.Lock()
+	defer manager.mu.Unlock()
+	if manager.loginGeneration != generation {
+		return
+	}
+	manager.state = StateError
+	manager.lastError = strings.TrimSpace(message)
+}
+
+func (manager *Manager) invalidateAuthorization(generation uint64, message string) {
+	manager.mu.Lock()
+	defer manager.mu.Unlock()
+	if manager.loginGeneration != generation {
+		return
+	}
+	manager.loginGeneration++
+	manager.credentials = credentials{}
+	manager.state = StateError
+	manager.lastError = strings.TrimSpace(message)
+	_ = os.Remove(manager.path)
+}
+
+func buildLoginURL(loginID string, challenge string) (string, error) {
+	parsed, err := url.Parse(websiteURL + "/loginDeepControl")
+	if err != nil {
+		return "", err
+	}
+	query := parsed.Query()
+	query.Set("challenge", challenge)
+	query.Set("uuid", loginID)
+	query.Set("mode", "login")
+	query.Set("supportsSelectedTeamLogin", "true")
+	parsed.RawQuery = query.Encode()
+	return parsed.String(), nil
+}
+
+func bearer(token string) string {
+	value := strings.TrimSpace(token)
+	if strings.HasPrefix(strings.ToLower(value), "bearer ") {
+		return value
+	}
+	return "Bearer " + value
+}
+
+func tokenNeedsRefresh(token string, now time.Time) bool {
+	parts := strings.Split(strings.TrimSpace(token), ".")
+	if len(parts) < 2 {
+		return false
+	}
+	payload, err := base64.RawURLEncoding.DecodeString(parts[1])
+	if err != nil {
+		return false
+	}
+	claims := struct {
+		ExpiresAt json.Number `json:"exp"`
+	}{}
+	decoder := json.NewDecoder(bytes.NewReader(payload))
+	decoder.UseNumber()
+	if err := decoder.Decode(&claims); err != nil || claims.ExpiresAt == "" {
+		return false
+	}
+	expiresAt, err := claims.ExpiresAt.Int64()
+	if err != nil {
+		return false
+	}
+	return !now.Add(refreshMargin).Before(time.Unix(expiresAt, 0))
+}
+
+func isRetryablePollError(err error) bool {
+	if err == nil {
+		return false
+	}
+	var urlErr *url.Error
+	if errors.As(err, &urlErr) {
+		return true
+	}
+	message := strings.ToLower(err.Error())
+	return strings.Contains(message, "http 429") || strings.Contains(message, "http 5")
+}