diff --git a/app/ai.py b/app/ai.py
index 2673493..30e628e 100644
--- a/app/ai.py
+++ b/app/ai.py
@@ -1753,6 +1753,37 @@ def _cmhub_call_with_retry(
     raise last_exc
 
 
+def request_cmhub_json(
+    method,
+    base_url,
+    endpoint,
+    api_key,
+    *,
+    payload=None,
+    connect_timeout=10,
+    read_timeout=30,
+    use_system_proxy=False,
+    headers_extra=None,
+):
+    """Call one cmhub JSON endpoint through the shared gateway session.
+
+    This is intentionally small: product-specific modules can reuse the same
+    proxy handling, connection pool, redaction and structured HTTP errors as
+    generation without reaching into private transport helpers.
+    """
+
+    _apply_cmhub_proxy(use_system_proxy)
+    return _cmhub_call_once(
+        method,
+        appconfig.cmhub_request_url(base_url, endpoint),
+        api_key,
+        payload,
+        connect_timeout=connect_timeout,
+        read_timeout=read_timeout,
+        headers_extra=headers_extra,
+    )
+
+
 def _cmhub_call_once(method, url, api_key, payload, connect_timeout, read_timeout, headers_extra=None):
     headers = {
         "Authorization": "Bearer " + str(api_key),
diff --git a/app/appconfig.py b/app/appconfig.py
index 64e7df2..ba4186e 100644
--- a/app/appconfig.py
+++ b/app/appconfig.py
@@ -122,6 +122,9 @@ DEFAULT_CONFIG = {
             "ratio": "1:1",
         },
     },
+    "subscription": {
+        "last_notice_id": "",
+    },
 }
 
 DEFAULT_AI_MODELS_CONFIG = {
@@ -706,6 +709,25 @@ def cdp_ready_timeout(config=None) -> int:
     return int(_config_or_load(config).get("cdp_ready_timeout", 60))
 
 
+def subscription_notice_id(config=None) -> str:
+    section = _config_or_load(config).get("subscription", {})
+    if not isinstance(section, dict):
+        return ""
+    return str(section.get("last_notice_id") or "").strip()
+
+
+def save_subscription_notice_id(notice_id, path=CONFIG_PATH) -> dict:
+    """Persist the last server notification version without storing credentials."""
+
+    config = load_config(path)
+    section = config.get("subscription", {})
+    if not isinstance(section, dict):
+        section = {}
+    section["last_notice_id"] = str(notice_id or "").strip()
+    config["subscription"] = section
+    return save_config(config, path=path)
+
+
 def ai_config(config=None) -> dict:
     return copy.deepcopy(_config_or_load(config).get("ai", DEFAULT_CONFIG["ai"]))
 
diff --git a/app/gui/__init__.py b/app/gui/__init__.py
index 67347df..b5745a3 100644
--- a/app/gui/__init__.py
+++ b/app/gui/__init__.py
@@ -189,6 +189,7 @@ def main() -> int:
     if runtime_lease is not None:
         app.aboutToQuit.connect(runtime_lease.release)
     window.show()
+    QTimer.singleShot(0, window.begin_subscription_check)
     QTimer.singleShot(
         0,
         lambda: update_health.write_health(health_context, "main_window_ready"),
diff --git a/app/gui/main_window.py b/app/gui/main_window.py
index 699d2c8..3174eea 100644
--- a/app/gui/main_window.py
+++ b/app/gui/main_window.py
@@ -2,6 +2,10 @@
 
 from __future__ import annotations
 
+from PySide6.QtCore import QUrl
+from PySide6.QtGui import QDesktopServices
+
+from .. import subscription
 from ..version import display_name
 from .tabs.accounts import AccountsTab
 from .tabs.apply import ApplyTab
@@ -10,6 +14,7 @@ from .tabs.generate import GenerateTab
 from .tabs.product_suite import ProductSuiteTab
 from .tabs.settings import SettingsTab
 from .widgets import *
+from .workers import SubscriptionCheckWorker
 
 
 PREFERRED_WINDOW_SIZE = (1180, 760)
@@ -106,6 +111,14 @@ class MainWindow(QMainWindow):
         self._settings_tab_index = TAB_TITLES.index("设置")
         self._last_tab_index = 0
         self._reverting_tab_change = False
+        self._subscription_status = subscription.SubscriptionStatus(
+            subscription.STATUS_UNAVAILABLE
+        )
+        self._subscription_worker = None
+        self._subscription_thread = None
+        self._subscription_request_token = 0
+        self._subscription_prompt_key = ""
+        self._subscription_closed = False
         self.tabs = QTabWidget()
         self.tabs.setObjectName("mainTabs")
         self.tabs.setStyleSheet(TAB_STYLE)
@@ -115,7 +128,30 @@ class MainWindow(QMainWindow):
         settings_tab = self._settings_tab()
         if hasattr(settings_tab, "settingsSaved"):
             settings_tab.settingsSaved.connect(self._on_settings_saved)
-        self.setCentralWidget(self.tabs)
+        self._header_title_label = QLabel(display_name())
+        self._header_title_label.setObjectName("appHeaderTitle")
+        self._header_title_label.setStyleSheet(
+            "font-size: 15px; font-weight: 600; color: #24292f;"
+        )
+        self._subscription_label = QLabel("会员：正在验证")
+        self._subscription_label.setObjectName("subscriptionStatusLabel")
+        self._subscription_label.setAccessibleName("会员状态")
+        self._subscription_label.setStyleSheet("color: #0969da;")
+        header = QWidget()
+        header.setObjectName("appHeader")
+        header_layout = QHBoxLayout(header)
+        header_layout.setContentsMargins(18, 8, 18, 4)
+        header_layout.setSpacing(10)
+        header_layout.addWidget(self._header_title_label)
+        header_layout.addStretch(1)
+        header_layout.addWidget(self._subscription_label)
+        central = QWidget()
+        central_layout = QVBoxLayout(central)
+        central_layout.setContentsMargins(0, 0, 0, 0)
+        central_layout.setSpacing(0)
+        central_layout.addWidget(header)
+        central_layout.addWidget(self.tabs, 1)
+        self.setCentralWidget(central)
         self.show_status("就绪", level="muted")
         if startup_status:
             self.show_status(startup_status, level="success")
@@ -150,6 +186,7 @@ class MainWindow(QMainWindow):
                 cover_prompts_dir=appconfig.cover_prompts_dir(self.config),
                 open_accounts_callback=lambda: self.open_accounts_tab(),
                 refresh_workflow_callback=lambda: self.refresh_task_tabs(),
+                subscription_preflight_callback=self.ensure_subscription_for_new_submit,
             )
         if title == "③ 更新蝦皮":
             return ApplyTab(
@@ -179,6 +216,7 @@ class MainWindow(QMainWindow):
                 config=self.config,
                 config_path=self.config_path,
                 status_callback=self.show_status,
+                subscription_preflight_callback=self.ensure_subscription_for_new_submit,
             )
         raise ValueError(f"未知主界面模块：{title}")
 
@@ -195,6 +233,182 @@ class MainWindow(QMainWindow):
                 widget.refresh_gateway_state()
         label = "自定义网关" if str(backend) == "direct" else "默认网关"
         self.show_status("设置已保存，当前使用%s" % label, level="success")
+        self.begin_subscription_check(show_prompt=False)
+
+    @property
+    def subscription_status(self):
+        return self._subscription_status
+
+    def begin_subscription_check(self, *, show_prompt=True):
+        """Refresh membership state without blocking the Qt GUI thread."""
+
+        self._subscription_request_token += 1
+        token = self._subscription_request_token
+        if self._subscription_worker is not None:
+            self._subscription_worker.cancel()
+        self._set_product_access(False)
+        self._set_subscription_label("会员：正在验证", "info")
+        worker = SubscriptionCheckWorker(
+            config=self.config,
+            cmhub_config_path=self.config.get("cmhub_config_path"),
+        )
+        worker.finished.connect(
+            lambda payload, token=token, show_prompt=show_prompt: self._on_subscription_checked(
+                token,
+                payload,
+                show_prompt=show_prompt,
+            )
+        )
+        worker.cancelled.connect(
+            lambda payload, token=token, show_prompt=show_prompt: self._on_subscription_checked(
+                token,
+                payload,
+                show_prompt=show_prompt,
+            )
+        )
+        thread = run_worker(worker, thread_name="SubscriptionCheckWorker", start=False)
+        thread.finished.connect(lambda: self._forget_subscription_thread(thread))
+        self._subscription_worker = worker
+        self._subscription_thread = thread
+        thread.start()
+
+    def ensure_subscription_for_new_submit(self, action_name="生成"):
+        """Return whether a new product request may start from the current UI."""
+
+        status = self._subscription_status
+        if status.allows_product_workflows:
+            return True
+        if self._subscription_thread is not None:
+            self.show_status("正在验证会员状态，请稍后再%s" % action_name, level="info")
+            return False
+        self.show_status("%s：%s" % (action_name, status.user_message), level="warning")
+        self._show_subscription_access_prompt(status)
+        return False
+
+    def _on_subscription_checked(self, token, payload, *, show_prompt=True):
+        if self._subscription_closed or token != self._subscription_request_token:
+            return
+        result = payload.get("subscription") if isinstance(payload, dict) else None
+        if not isinstance(result, subscription.SubscriptionStatus):
+            result = subscription.SubscriptionStatus(subscription.STATUS_UNAVAILABLE)
+        self._subscription_status = result
+        self._apply_subscription_status(result, show_prompt=show_prompt)
+
+    def _forget_subscription_thread(self, thread):
+        if self._subscription_thread is thread:
+            self._subscription_thread = None
+            self._subscription_worker = None
+
+    def _apply_subscription_status(self, status, *, show_prompt=True):
+        self._subscription_status = status
+        if status.state == subscription.STATUS_ACTIVE:
+            expiry = subscription.format_expiry(status.expires_at)
+            self._set_subscription_label(
+                "%s · %s · 有效至%s" % (status.account_name, status.plan_name, expiry),
+                "success",
+            )
+        elif status.state == subscription.STATUS_GRACE:
+            expiry = subscription.format_expiry(status.grace_expires_at) or subscription.format_expiry(status.expires_at)
+            self._set_subscription_label(
+                "%s · %s · 宽限至%s" % (status.account_name, status.plan_name, expiry),
+                "warning",
+            )
+        else:
+            self._set_subscription_label("会员：%s" % status.user_message, self._subscription_level(status))
+
+        self._set_product_access(status.allows_product_workflows)
+        if status.allows_product_workflows:
+            if status.state == subscription.STATUS_LEGACY:
+                self.show_status(status.user_message, level="muted")
+            else:
+                self.show_status("会员状态已验证", level="success")
+                self._show_subscription_notice_once(status)
+            return
+        self.open_settings_tab()
+        self.show_status(status.user_message, level=self._subscription_level(status))
+        if show_prompt:
+            self._show_subscription_access_prompt(status)
+
+    @staticmethod
+    def _subscription_level(status):
+        if status.state in {subscription.STATUS_UNAVAILABLE, subscription.STATUS_KEY_INVALID}:
+            return "warning"
+        return "danger"
+
+    def _set_subscription_label(self, text, level):
+        color = _status_level_color(level)
+        self._subscription_label.setText(str(text))
+        self._subscription_label.setStyleSheet("color: %s;" % color)
+        self._subscription_label.setToolTip(str(text))
+
+    def _set_product_access(self, enabled):
+        for index, title in enumerate(TAB_TITLES):
+            self.tabs.setTabEnabled(index, bool(enabled) or title == "设置")
+
+    def _show_subscription_access_prompt(self, status):
+        if self._subscription_closed:
+            return
+        if status.state in {subscription.STATUS_ACTIVE, subscription.STATUS_GRACE, subscription.STATUS_LEGACY}:
+            return
+        prompt_key = "|".join((status.state, status.notice_id, status.manage_url))
+        if prompt_key and prompt_key == self._subscription_prompt_key:
+            return
+        self._subscription_prompt_key = prompt_key
+        box = QMessageBox(self)
+        box.setIcon(QMessageBox.Warning)
+        box.setWindowTitle("需要配置会员账号")
+        box.setText(status.user_message)
+        box.setInformativeText("请配置有效的 cmhub API Key，或前往线上会员中心开通、续费后重试。")
+        settings_button = box.addButton("打开设置", QMessageBox.AcceptRole)
+        manage_button = None
+        if status.manage_url:
+            manage_button = box.addButton("前往会员中心", QMessageBox.ActionRole)
+        exit_button = box.addButton("退出", QMessageBox.RejectRole)
+        box.setDefaultButton(settings_button)
+        box.setEscapeButton(exit_button)
+        box.exec()
+        if box.clickedButton() is settings_button:
+            self.open_settings_tab()
+        elif manage_button is not None and box.clickedButton() is manage_button:
+            QDesktopServices.openUrl(QUrl(status.manage_url))
+        elif box.clickedButton() is exit_button:
+            self.close()
+
+    def _show_subscription_notice_once(self, status):
+        notice_id = str(status.notice_id or "").strip()
+        if not notice_id or notice_id == appconfig.subscription_notice_id(self.config):
+            return
+        box = QMessageBox(self)
+        box.setIcon(QMessageBox.Information)
+        box.setWindowTitle("已启用会员订阅")
+        expiry = subscription.format_expiry(
+            status.grace_expires_at if status.state == subscription.STATUS_GRACE else status.expires_at
+        )
+        text = "已启用蝦皮圈会员订阅服务。当前账号：%s；套餐：%s。" % (
+            status.account_name,
+            status.plan_name,
+        )
+        if expiry:
+            text += "当前有效至%s。" % expiry
+        text += "请在到期前前往线上会员中心选择或续费套餐。"
+        box.setText(text)
+        manage_button = None
+        if status.manage_url:
+            manage_button = box.addButton("前往会员中心", QMessageBox.ActionRole)
+        close_button = box.addButton("关闭", QMessageBox.AcceptRole)
+        box.setDefaultButton(close_button)
+        box.exec()
+        if manage_button is not None and box.clickedButton() is manage_button:
+            QDesktopServices.openUrl(QUrl(status.manage_url))
+        try:
+            saved = appconfig.save_subscription_notice_id(
+                notice_id,
+                path=self.config_path,
+            )
+        except Exception:
+            return
+        self.config.clear()
+        self.config.update(saved)
 
     def _on_tab_changed(self, index):
         if self._reverting_tab_change:
@@ -239,6 +453,9 @@ class MainWindow(QMainWindow):
 
     def closeEvent(self, event):
         if self._confirm_leave_settings_tab():
+            self._subscription_closed = True
+            if self._subscription_worker is not None:
+                self._subscription_worker.cancel()
             event.accept()
             return
         event.ignore()
diff --git a/app/gui/tabs/generate.py b/app/gui/tabs/generate.py
index 19bc6a5..8258b94 100644
--- a/app/gui/tabs/generate.py
+++ b/app/gui/tabs/generate.py
@@ -983,6 +983,7 @@ class GenerateTab(QWidget):
         title_templates_dir=None,
         open_accounts_callback=None,
         refresh_workflow_callback=None,
+        subscription_preflight_callback=None,
     ):
         super().__init__(parent)
         self.config = appconfig.load_config(config_path or appconfig.CONFIG_PATH) if config is None else config
@@ -995,6 +996,7 @@ class GenerateTab(QWidget):
         self.status_callback = status_callback
         self.open_accounts_callback = open_accounts_callback
         self.refresh_workflow_callback = refresh_workflow_callback
+        self.subscription_preflight_callback = subscription_preflight_callback
         self.title_prompt_path = title_prompt_path or appconfig.title_prompt_path(self.config)
         self.cover_prompts_dir = cover_prompts_dir or appconfig.cover_prompts_dir(self.config)
         self.title_templates_dir = title_templates_dir or appconfig.title_templates_dir(self.config)
@@ -1757,6 +1759,8 @@ class GenerateTab(QWidget):
         if self.generate_thread is not None:
             self._set_status("AI 生成正在进行...")
             return
+        if self.subscription_preflight_callback is not None and not self.subscription_preflight_callback("开始 AI 生成"):
+            return
         if not self._save_generate_mode_setting(show_status=False):
             return
         generate_mode = self._current_generate_mode()
diff --git a/app/gui/tabs/product_suite.py b/app/gui/tabs/product_suite.py
index fcfeb5b..7a74257 100644
--- a/app/gui/tabs/product_suite.py
+++ b/app/gui/tabs/product_suite.py
@@ -1973,6 +1973,7 @@ class ProductSuiteTab(QWidget):
         config=None,
         config_path=None,
         status_callback=None,
+        subscription_preflight_callback=None,
     ):
         super().__init__(parent)
         self.setObjectName("productSuiteTab")
@@ -1982,6 +1983,7 @@ class ProductSuiteTab(QWidget):
         self.cmhub_config_path = self.config.get("cmhub_config_path") or appconfig.cmhub_config_file_path(self.config)
         self.product_suite_prompt_path = appconfig.product_suite_prompt_path(self.config)
         self.status_callback = status_callback
+        self.subscription_preflight_callback = subscription_preflight_callback
         self.accounts = []
         self._states = {}
         self._retired_states = []
@@ -4392,6 +4394,8 @@ class ProductSuiteTab(QWidget):
     def start_ai_write(self, checked=False):
         if not self._require_default_gateway("商品套图AI帮写"):
             return
+        if self.subscription_preflight_callback is not None and not self.subscription_preflight_callback("开始 AI 帮写"):
+            return
         state = self._displayed_state
         if state is None:
             return
@@ -4729,6 +4733,8 @@ class ProductSuiteTab(QWidget):
         retry_job_id=None,
         confirm_direct_retry=False,
     ):
+        if self.subscription_preflight_callback is not None and not self.subscription_preflight_callback("生成商品套图"):
+            return False
         if not self._ensure_generation_gateway():
             return False
         if state.generation_running():
diff --git a/app/gui/workers.py b/app/gui/workers.py
index 0ba7d80..5952724 100644
--- a/app/gui/workers.py
+++ b/app/gui/workers.py
@@ -23,6 +23,7 @@ from .. import (
     image_studio_generation,
     image_studio_images,
     product_status,
+    subscription,
 )
 from ..collect_skip import ALIAS_UNMATCHED, LOGIN_REQUIRED, empty_skip_reason_counts
 from .widgets import *
@@ -34,6 +35,22 @@ _USER_LOG_PATH_RE = re.compile(
 )
 
 
+class SubscriptionCheckWorker(BaseWorker):
+    """Fetch the current cmshopee account subscription away from the GUI thread."""
+
+    def __init__(self, *, config=None, cmhub_config_path=None):
+        super().__init__()
+        self.config = config
+        self.cmhub_config_path = cmhub_config_path
+
+    def execute(self):
+        result = subscription.check_status(
+            self.config,
+            cmhub_config_path=self.cmhub_config_path,
+        )
+        return {"subscription": result}
+
+
 def _image_studio_step_label(step):
     return {
         "ensure_chrome": "准备账号浏览器",
diff --git a/app/subscription.py b/app/subscription.py
new file mode 100644
index 0000000..ff80135
--- /dev/null
+++ b/app/subscription.py
@@ -0,0 +1,231 @@
+"""cmshopee account subscription status helpers.
+
+The remote service remains the authority for subscription enforcement.  This
+module only normalizes the status response for desktop UI and preflight use;
+it deliberately never persists or exposes the API key it uses.
+"""
+
+from __future__ import annotations
+
+from dataclasses import dataclass
+from datetime import datetime
+from urllib.parse import urlsplit
+
+from . import ai, appconfig
+
+
+PRODUCT_CODE = "cmshopee"
+STATUS_NOT_CONFIGURED = "not_configured"
+STATUS_ACTIVE = "active"
+STATUS_GRACE = "grace"
+STATUS_REQUIRED = "required"
+STATUS_EXPIRED = "expired"
+STATUS_REVOKED = "revoked"
+STATUS_ACCOUNT_DISABLED = "account_disabled"
+STATUS_KEY_INVALID = "key_invalid"
+STATUS_UNAVAILABLE = "unavailable"
+STATUS_LEGACY = "legacy"
+
+_ALLOWED_STATES = {
+    STATUS_NOT_CONFIGURED,
+    STATUS_ACTIVE,
+    STATUS_GRACE,
+    STATUS_REQUIRED,
+    STATUS_EXPIRED,
+    STATUS_REVOKED,
+    STATUS_ACCOUNT_DISABLED,
+    STATUS_KEY_INVALID,
+    STATUS_UNAVAILABLE,
+    STATUS_LEGACY,
+}
+
+
+@dataclass(frozen=True)
+class SubscriptionStatus:
+    """A redacted, UI-safe view of one cmshopee subscription lookup."""
+
+    state: str
+    account_name: str = ""
+    plan_name: str = ""
+    expires_at: str = ""
+    grace_expires_at: str = ""
+    manage_url: str = ""
+    notice_id: str = ""
+
+    def __post_init__(self):
+        if self.state not in _ALLOWED_STATES:
+            raise ValueError("未知订阅状态")
+
+    @property
+    def allows_product_workflows(self) -> bool:
+        return self.state in {STATUS_ACTIVE, STATUS_GRACE, STATUS_LEGACY}
+
+    @property
+    def interface_available(self) -> bool:
+        return self.state != STATUS_LEGACY
+
+    @property
+    def user_message(self) -> str:
+        return {
+            STATUS_NOT_CONFIGURED: "请先在设置配置 cmhub API Key",
+            STATUS_ACTIVE: "会员有效",
+            STATUS_GRACE: "会员处于宽限期",
+            STATUS_REQUIRED: "当前账号尚未开通蝦皮圈会员",
+            STATUS_EXPIRED: "当前账号的蝦皮圈会员已到期",
+            STATUS_REVOKED: "当前账号的蝦皮圈会员已撤销",
+            STATUS_ACCOUNT_DISABLED: "cmhub 账号当前不可用",
+            STATUS_KEY_INVALID: "cmhub API Key 无效，请在设置重新填写",
+            STATUS_UNAVAILABLE: "暂时无法确认会员状态",
+            STATUS_LEGACY: "会员服务尚未启用，当前按原有方式运行",
+        }[self.state]
+
+
+def check_status(
+    config=None,
+    *,
+    cmhub_config_path=None,
+    request_json=None,
+) -> SubscriptionStatus:
+    """Look up the current API-key account subscription without leaking secrets.
+
+    A service that has not yet deployed the endpoint returns ``404``.  That is
+    an explicit rollout compatibility state rather than an invalid membership.
+    """
+
+    cfg = appconfig.load_config() if config is None else config
+    try:
+        cmhub = appconfig.cmhub_config(cfg)
+        base_url = appconfig.normalize_cmhub_base_url(cmhub.get("base_url"))
+        key_path = (
+            cmhub_config_path
+            or cfg.get("cmhub_config_path")
+            or appconfig.cmhub_config_file_path(cfg)
+        )
+        api_key = appconfig.get_cmhub_api_key(path=key_path)
+    except Exception:
+        return SubscriptionStatus(STATUS_NOT_CONFIGURED)
+    if not base_url or not api_key:
+        return SubscriptionStatus(STATUS_NOT_CONFIGURED)
+
+    requester = request_json or ai.request_cmhub_json
+    try:
+        data = requester(
+            "GET",
+            base_url,
+            "/api/v1/cmshopee/subscription/status",
+            api_key,
+            connect_timeout=cmhub.get(
+                "connect_timeout",
+                appconfig.CMHUB_CONNECT_TIMEOUT_DEFAULT,
+            ),
+            read_timeout=30,
+            use_system_proxy=bool(appconfig.ai_config(cfg).get("use_system_proxy")),
+        )
+    except ai.CMHubError as exc:
+        return _status_from_cmhub_error(exc)
+    except Exception:
+        return SubscriptionStatus(STATUS_UNAVAILABLE)
+    return _parse_status_response(data, base_url)
+
+
+def format_expiry(value: str) -> str:
+    """Return a compact local date for the title-area membership label."""
+
+    text = str(value or "").strip()
+    if not text:
+        return ""
+    try:
+        parsed = datetime.fromisoformat(text.replace("Z", "+00:00"))
+    except ValueError:
+        return ""
+    return parsed.date().isoformat()
+
+
+def _status_from_cmhub_error(exc: ai.CMHubError) -> SubscriptionStatus:
+    code = str(getattr(exc, "code", "") or "").strip().lower()
+    if code == "not_found":
+        return SubscriptionStatus(STATUS_LEGACY)
+    if code == "unauthorized":
+        return SubscriptionStatus(STATUS_KEY_INVALID)
+    if code == "account_disabled":
+        return SubscriptionStatus(STATUS_ACCOUNT_DISABLED)
+    if code in {"subscription_required", "subscription_missing"}:
+        return SubscriptionStatus(STATUS_REQUIRED)
+    if code in {"subscription_expired", "license_expired"}:
+        return SubscriptionStatus(STATUS_EXPIRED)
+    if code in {"subscription_revoked", "subscription_cancelled"}:
+        return SubscriptionStatus(STATUS_REVOKED)
+    return SubscriptionStatus(STATUS_UNAVAILABLE)
+
+
+def _parse_status_response(data, base_url: str) -> SubscriptionStatus:
+    if not isinstance(data, dict):
+        return SubscriptionStatus(STATUS_UNAVAILABLE)
+    if str(data.get("product_code") or "").strip().lower() != PRODUCT_CODE:
+        return SubscriptionStatus(STATUS_UNAVAILABLE)
+
+    normalized = _normalize_remote_state(data.get("status"))
+    if not normalized:
+        return SubscriptionStatus(STATUS_UNAVAILABLE)
+    account = data.get("account") if isinstance(data.get("account"), dict) else {}
+    plan = data.get("plan") if isinstance(data.get("plan"), dict) else {}
+    account_name = str(account.get("display_name") or "").strip()
+    plan_name = str(plan.get("display_name") or "").strip()
+    expires_at = str(data.get("expires_at") or "").strip()
+    grace_expires_at = str(data.get("grace_expires_at") or "").strip()
+    manage_url = _safe_manage_url(data.get("manage_url"), base_url)
+    notice_id = str(data.get("notice_id") or "").strip()
+
+    if normalized in {STATUS_ACTIVE, STATUS_GRACE}:
+        if not account_name or not plan_name or not format_expiry(expires_at):
+            return SubscriptionStatus(STATUS_UNAVAILABLE)
+        if (
+            normalized == STATUS_GRACE
+            and grace_expires_at
+            and not format_expiry(grace_expires_at)
+        ):
+            return SubscriptionStatus(STATUS_UNAVAILABLE)
+
+    return SubscriptionStatus(
+        normalized,
+        account_name=account_name,
+        plan_name=plan_name,
+        expires_at=expires_at,
+        grace_expires_at=grace_expires_at,
+        manage_url=manage_url,
+        notice_id=notice_id,
+    )
+
+
+def _normalize_remote_state(value) -> str:
+    normalized = str(value or "").strip().lower().replace("-", "_")
+    return {
+        "active": STATUS_ACTIVE,
+        "grace": STATUS_GRACE,
+        "required": STATUS_REQUIRED,
+        "subscription_required": STATUS_REQUIRED,
+        "expired": STATUS_EXPIRED,
+        "subscription_expired": STATUS_EXPIRED,
+        "revoked": STATUS_REVOKED,
+        "cancelled": STATUS_REVOKED,
+        "subscription_revoked": STATUS_REVOKED,
+        "account_disabled": STATUS_ACCOUNT_DISABLED,
+    }.get(normalized, "")
+
+
+def _safe_manage_url(value, base_url: str) -> str:
+    text = str(value or "").strip()
+    if not text:
+        return ""
+    parsed = urlsplit(text)
+    base = urlsplit(str(base_url or ""))
+    if parsed.scheme != "https" or not parsed.hostname:
+        return ""
+    if (
+        parsed.username
+        or parsed.password
+        or not base.hostname
+        or parsed.hostname.lower() != base.hostname.lower()
+    ):
+        return ""
+    return text
diff --git a/docs/04-architecture.md b/docs/04-architecture.md
index 75ff422..33a9c98 100644
--- a/docs/04-architecture.md
+++ b/docs/04-architecture.md
@@ -25,6 +25,7 @@ GUI（PySide6 QTabWidget，当前显示 6 Tab）
   ├── cdp        CDP 客户端（连接、找/开 tab、执行 JS、拖拽）
   ├── editor     登录检测 / 检测商品状态 / 采集旧标题旧封面 / 改标题 / 换封面 / 点更新
   ├── product_status  商品状态代码、显示和分组规则
+  ├── subscription  cmhub 账号订阅状态查询、响应归一化与客户端预检状态
   ├── ai         文本生成（提示词+旧标题→新标题）/ 图像生成（提示词+旧封面→新封面）/ 商品原图理解（商品套图AI帮写）
   ├── image_studio          商品套图项目/资产/job数据服务（兼容旧AI工场终选）
   ├── product_suite         套图设置归一化、数量计算、完整提示词与job规划
@@ -78,6 +79,7 @@ imported  →  collected  →  generated  →  applied
 - `cdp`：连接调试端口、找/开 tab、执行 JS、拖拽、注入文件。
 - `editor`：登录检测、读取商品状态、**采集**（读旧标题、下载旧封面）、改标题、换封面、点更新。
 - `product_status`：商品状态代码 `normal/unlisted/reviewing/unknown` 的归一化、中文显示、EDS 提示分类和下游任务分组；①②③只能复用该模块，不各自判断。
+- `subscription`：使用 cmhub API Key 查询 `GET /api/v1/cmshopee/subscription/status`，把远端权益结果归一化为有效、宽限、未订阅、到期、撤销、账号不可用、Key 无效、暂时不可用或旧服务兼容状态；不保存、展示或记录 API Key，服务端始终是最终授权方。
 - `ai`：`gen_title(prompt, old_title)`、`gen_cover(prompt, old_cover_path)`、`analyze_product_images(instruction, context, image_paths)`；前两者分别负责②标题/生图，后者只供商品套图中的「AI帮写」调用 cmhub 图片理解接口，读取1至8张按 `source_order` 排序的本地商品原图并返回可编辑卖点与白名单计费元数据。
 - `cmhub_models`：格式化 cmhub 模型别名，并维护仅进程内有效的短期模型目录缓存；缓存键使用规整网关地址和别名，不含 API Key，不写入配置、SQLite、日志或导出文件。
 
@@ -86,6 +88,7 @@ imported  →  collected  →  generated  →  applied
 - 应用配置（模型选择、生成参数、目录、Chrome 路径）→ `data/config.json`。
 - AI 模型清单（direct 内部兼容模式 url/模型/密钥/类型/连接超时）→ `data/config/ai_models.json`（API Key 本地明文保存，必须 gitignore，UI 打码显示；普通设置页不再暴露 direct 切换入口）。
 - cmhub 网关 Key → `data/config/cmhub.json`，schema `{ "api_key": "..." }`；`config.json` 只保存 Base URL、别名和超时，不保存 Key。
+- 订阅状态 → 仅进程内 `SubscriptionStatus`；顶部 GUI 只展示服务端返回的账号显示名、套餐名和有效期，不写入 SQLite、诊断日志或导出。`404` 表示服务端尚未启用订阅接口，客户端保持旧行为；网络异常不被误判为会员到期。
 - cmhub 模型目录与 AI帮写/正式套图预估价格 → 仅内存短期缓存；预估值只供用户确认，实际扣点仍以网关响应 metadata 为准。
 - 业务数据（账号、任务、各阶段结果）→ SQLite `data/cmshopee.db`。
 - 图片（采集的旧封面、AI 生成的新封面）→ `data/images/`（路径记在 DB）。
diff --git a/docs/routes.md b/docs/routes.md
index cfce71b..8e4674a 100644
--- a/docs/routes.md
+++ b/docs/routes.md
@@ -25,6 +25,14 @@
 
 创建六个业务Tab之前先请求版本接口。服务端明确要求强制升级时，不创建 `MainWindow`，而是显示「必须升级」模态进度窗口：用户点击「立即升级」后可看到下载、校验、准备新版和重启阶段，以及百分比和字节数；运行中可「取消并退出」，失败后可重试。校验完成后软件启动安装目录外的独立更新器并退出，更新器替换程序后自动重启新版。版本接口完全不可达或非法时仍失败放行；一旦已明确强制，元数据缺失或后续失败都不允许进入旧版主界面。
 
+## 会员订阅接入
+
+- 强制升级检查完成、主窗口显示后，后台用 `data/config/cmhub.json` 的 API Key 请求 `GET /api/v1/cmshopee/subscription/status`；不会阻塞 Qt 主线程或把 Key 放入 URL、状态栏、日志和错误提示。
+- 状态接口已启用时，未配置 Key、Key 无效、账号禁用、未订阅、到期、撤销或暂时无法确认会员状态，主窗口只保留「设置」Tab，并在顶部显示中文原因；用户可打开设置重填 Key、按服务端返回的 `manage_url` 用默认浏览器前往线上会员中心，或退出。已接受的异步任务、本地数据和导出不删除。
+- 订阅有效时，应用顶部标题区域右侧显示“账号名 · 套餐名 · 有效至日期”；宽限期显示宽限截止日。不得把长会员文本拼进 Windows 原生窗口标题，也不得展示 API Key。
+- 当前服务端未部署订阅接口时，`404` 视为旧服务兼容：顶部显示“会员服务尚未启用”，六个工作流继续按旧行为运行，不弹阻断窗口。网络或格式错误显示“暂时无法确认会员状态”，不能误报为 Key 无效或会员到期。
+- ② AI生成、⑥商品套图和「AI帮写」的每次新提交均读取同一订阅预检状态；客户端预检只改善体验，cmhub 产品接口仍必须服务端最终裁决。已提交的异步任务继续查询、下载和查看。自定义网关直连同样做客户端软校验，不能作为不可绕过的授权保护。
+
 ## 全局 Tab 栏可用性
 
 当前 6 个主 Tab 是高频导航入口，不能使用 Qt 默认的紧凑宽度。`MainWindow` 必须为 `QTabWidget/QTabBar` 设置基础样式：
@@ -110,6 +118,7 @@
 - 筛选行提供「打开图片文件夹」按钮，用于只读打开本地图片目录：选中某行时打开该商品所在账号图片文件夹（优先打开已有新/旧封面文件的真实父目录，缺失时回退到规范账号目录）；未选行且选择具体批次时打开该批次图片文件夹；未选行且为全部批次时打开图片根目录。目录不存在只中文提示，不自动创建目录，不修改任务状态。
 - 右下：任务列表（店铺名、商品id、旧标题、新标题、标题状态、图片状态）+ AI生成运行日志；标题/图片状态由 `new_title`、`new_cover_path`、`stage/status` 和失败步骤推导，帮助用户区分“标题未生成 / 图片未生成 / 标题成功但图片失败”。商品ID列按原等分宽度约 50% 显示；标题状态和图片状态列在 T-554 基础上再缩到约 33%，缩出的宽度平均给旧标题和新标题。已生成、未提交线上、非运行中的任务可双击「新标题」列本地微调，写回 `tasks.new_title`，清空 `last_error` 并回到可更新；双击其他列弹窗展示旧封面、新封面和历史候选图。
 - 底部**单个「开始生成」+「停止」**，并增加「生成内容」下拉：默认只生成标题，可选只生成封面或生成标题和封面；只生成封面不调用生文，有新标题时优先使用，没有时用已采集旧标题作为封面prompt参考，新旧标题都为空才不纳入。开始前先从真实候选重新分组商品状态，弹出与①共用的纵向范围确认框：默认「生成架上商品」（即仅检测结果为正常的商品），「生成全部商品」为警示橙色描边，还会处理未上架、审核中、状态未知商品，可能额外消耗点数；未上架、审核中、状态未知默认不入队、不请求 AI、不消耗点数，用户明确选择全部范围才可入队。商品状态功能上线前的历史空状态会启动时迁移为默认正常；上线后仍为空的记录按未知处理。范围确认不跨轮记忆，取消或候选在确认期间变化均不启动生成；无异常候选时该警示选项禁用。标题/图片两条进度条右侧分别显示同宽用时标签（`生标题用时 N 秒` / `生图用时 N 秒`），运行中每秒递增，完成/停止后冻结；原图片进度条右侧的失败数和 cmhub 余额不再占用该位置。cmhub 模式会把用户设置的图片并发内部限制到最大 5，并用同样最大 5 的独立下载线程池拉取 `image_url`，不新增用户可见下载并发配置；运行日志显示用户设置并发和实际并发。下拉状态持久化到 `config.json` 的 `ai.generate_mode`，并继续写回旧兼容 `ai.generate_cover`。
+- 点击「开始生成」还会先读取主窗口已验证的会员状态。未订阅、到期、Key 无效或状态暂时无法确认时不创建 `GenerateWorker`，引导到⑤设置或线上会员中心；旧服务订阅接口尚未启用时保持原有生成行为。
 - 生成参数（标题/图片并发数、失败重试、分辨率、jpg 质量、cmhub 网关/Key/别名）在 **设置**；②只暴露本轮生成标题/封面/图文的内容模式。设置不新增“下载并发”控件；cmhub 图片下载并发由程序按实际生图并发自动计算，最大 5。
 - 只生成标题时标题成功即写库并进入 `generated`，保留已有封面；只生成封面时通过组件级写库只保存 `new_cover_path`，不覆盖已有标题，也不把旧标题写入空的 `new_title`；生成标题和封面时按缺失组件增量补齐。“有新封面、无新标题”时标题状态为待生成、图片状态为已生成，后续补标题不重复生图。三种模式都写 `run_type=generate` 的 `run_logs/run_log_events` 和用户可读滚动日志；日志开头明确显示本轮生成内容。点击「开始生成」时先清空②界面可见日志并写入本轮开始摘要，运行中只追加本轮日志；不删除历史 `run_logs/run_log_events` 或本地 `data/logs/`。进入页面默认可显示“本轮日志会在开始运行后显示”，历史日志不自动混入当前运行界面。「停止」取消未开始项，可再次「开始生成」对剩余继续。即使用户通过商品状态筛选查看异常商品，也必须在范围确认框主动选择「生成全部商品」才会入队；默认「生成架上商品」不会因筛选而放宽。
 - 「重置生成结果」支持选中任务或当前筛选结果，运行中禁用；确认框提供「重置标题 / 重置封面 / 重置全部」，只改本地 DB，默认不删除本地新封面文件。若范围内包含已提交线上记录，必须提示本地重置不回滚蝦皮，重生成后再更新会再次提交线上。
@@ -223,6 +232,7 @@
 - AI帮写提交图片理解前先显示「开始AI帮写」确认框：按 `source_order` 说明会理解当前商品前1至8张可用原图并生成商品卖点与要求。模型目录只走后台读取或进程内短期缓存；仅当前图片理解别名有唯一无条件价格时显示「预计扣点：X 点」，否则明确实际以网关返回为准。确认框默认、Esc 和关闭均取消，不提交图片；开始后可取消本地等待，但已提交网关的请求仍可能产生扣点。预估不写入业务数据，完成后仍只显示接口返回的实际扣点和余额。
 - 常规「生成套图」保留“已有成功历史”优先确认，选择继续后才后台读取或复用同一模型目录缓存，并显示正式生成确认。确认严格按最终 planned `specs` 展示各分类实际张数、总张数和比例；逐图主图开启时明确白底图只用第一张原图，其他分类按每张原图生成；关闭时所有分类使用第1张主图及同一批冻结参考图。仅唯一无条件的生图价格显示预计单张和总扣点，总价只按 `len(specs)` 计算；价格未知时不显示数字。默认、Esc、关闭、切换任务、取消读取或计划变化均不创建生图 job；单图失败重试和恢复未完成任务不增加这一层批量确认。
 - 商品套图只管理本地图片资产，不自动上传或修改蝦皮；③线上更新边界不受影响。旧 `ImageStudioTab` 留作代码兼容但不再作为主窗口入口。
+- 「AI帮写」和「生成套图」在新提交前共用主窗口会员预检；默认网关或自定义网关直连都一样。继续查询已提交默认网关任务、下载、预览、历史查看和导出不属于新提交，不因会员状态变化中断。
 
 ## 流程导航
 
@@ -246,7 +256,7 @@
 
 | 组件 | 归属 | 说明 |
 | --- | --- | --- |
-| `MainWindow(QMainWindow)` | 根窗口 | 持有 `QTabWidget`、状态栏、全局消息 |
+| `MainWindow(QMainWindow)` | 根窗口 | 持有 `QTabWidget`、状态栏、顶部会员状态、订阅受限恢复入口和全局消息 |
 | `CollectTab(QWidget)` | ① | 导入、任务表、采集、回写 |
 | `GenerateTab(QWidget)` | ② | 左提示词管理 + 右筛选/任务列表；双击看新旧封面；先确认商品状态生成范围，再按本轮「生成内容」下拉接入 `GenerateWorker` |
 | `ApplyTab(QWidget)` | ③ | 已生成任务筛选 +「更新内容」下拉 + 商品状态优先/内容完整性预检剔除 +「检查本轮更新」+ 分批开始更新确认 + 检查/真实更新运行日志 + 结果回写与结束汇总 |
@@ -257,6 +267,7 @@
 | `BaseWorker(QObject)` | 后台 | 定义 `progress/log/row_updated/failed/finished/cancelled` signals |
 | `ApplyWorker(BaseWorker)` | ③ | 账号就绪预检、检查本轮更新、按每批最大条数分批、按账号并行或串行调用 `editor.apply_task(...)`、逐条 `set_applied()`，失败继续，写运行日志；执行层再次拒绝非正常商品状态 |
 | `AIModelTestWorker(BaseWorker)` | 设置 | 后台调用 `appconfig.test_ai_model()` 测试模型连接 |
+| `SubscriptionCheckWorker(BaseWorker)` | 根窗口 | 后台查询 cmhub 账号订阅状态；结果只通过 signal 回主线程更新会员标签和工作流可用性 |
 | `WriteBackWorker(BaseWorker)` | ①③ | ①回写旧字段；③回写新标题/新封面/更新状态 |
 | `ImageStudioPullImagesWorker / ImageStudioDownloadOriginalWorker / ProductSuiteImportImagesWorker / ProductSuiteGenerateWorker / ProductSuiteAiWriteWorker / CMHubModelCatalogWorker` | 商品套图 | 后台执行只读拉主图、远程原图下载、本地图片校验复制、默认网关异步或自定义网关同步套图生成、AI帮写和只读模型目录；拉图和本轮下载支持安全边界协作停止，worker 不直接操作 QWidget |
 
diff --git a/docs/tasks/T-686.md b/docs/tasks/T-686.md
index 005206a..ac0c04d 100644
--- a/docs/tasks/T-686.md
+++ b/docs/tasks/T-686.md
@@ -3,7 +3,7 @@ id: T-686
 title: 会员订阅状态接入与启动访问门禁
 phase: 8
 deps: []
-status: TODO
+status: DONE
 created: 2026-07-21
 ---
 
@@ -59,7 +59,10 @@ cmhub 需提供 `GET /api/v1/cmshopee/subscription/status`。2026-07-21 无凭
 ## 验证
 
 ```bash
-py -3.10 -m unittest tests.test_subscription tests.test_ai tests.test_image_studio_generation tests.test_gui
+py -3.10 -m unittest discover -s tests -p test_subscription.py
+py -3.10 -m unittest discover -s tests -p test_ai.py
+py -3.10 -m unittest discover -s tests -p test_image_studio_generation.py
+py -3.10 -m unittest discover -s tests -p test_gui.py
 py -3.10 -m unittest discover -s tests
 py -3.10 -m ruff check app tests main.py
 py -3.10 -m compileall app main.py
@@ -82,3 +85,5 @@ git diff --check
 ## 执行记录
 
 - 2026-07-21：任务创建；cmhub 订阅状态接口尚未上线，需在实现中保持 `404` 旧服务兼容。
+- 2026-07-21：新增 `app/subscription.py` 和 `SubscriptionCheckWorker`，复用 cmhub 共享 HTTP 会话查询订阅状态；主窗口在显示后异步检查，顶部显示账号/套餐/有效期，受限状态只保留设置恢复入口。② AI生成、⑥商品套图和 AI帮写的新提交接入同一预检，旧服务 `404` 放行既有工作流。
+- 2026-07-21：验证通过：`py -3.10 -m compileall app main.py`、`py -3.10 -m ruff check app tests main.py`、订阅/应用配置/AI/套图/GUI 定向测试，以及 `py -3.10 -m unittest discover -s tests`（664 项）。无凭据请求线上订阅状态接口返回 `404`，已由单测和运行时兼容分支覆盖；服务端上线后需使用测试 API Key 做一次真实有效/到期/未订阅联调，不属于本仓库可完成的接口发布工作。
diff --git a/tests/test_appconfig.py b/tests/test_appconfig.py
index 71d0bfa..2f4b63b 100644
--- a/tests/test_appconfig.py
+++ b/tests/test_appconfig.py
@@ -480,6 +480,29 @@ class AppConfigTests(TempDirMixin, unittest.TestCase):
 
         self.assert_removed(temp_dir)
 
+    def test_subscription_notice_id_persists_without_credentials(self):
+        with self.make_temp_dir() as temp_dir:
+            config_path = os.path.join(temp_dir, "config.json")
+
+            loaded = appconfig.load_config(config_path)
+            self.assertEqual("", appconfig.subscription_notice_id(loaded))
+
+            saved = appconfig.save_subscription_notice_id(
+                "subscription-notice-20260721",
+                path=config_path,
+            )
+            self.assertEqual(
+                "subscription-notice-20260721",
+                appconfig.subscription_notice_id(saved),
+            )
+            reloaded = appconfig.load_config(config_path)
+            self.assertEqual(
+                "subscription-notice-20260721",
+                appconfig.subscription_notice_id(reloaded),
+            )
+
+        self.assert_removed(temp_dir)
+
     def test_cmhub_base_url_normalizes_to_gateway_root(self):
         cases = {
             "https://cmhub.example.com/": "https://cmhub.example.com",
diff --git a/tests/test_gui.py b/tests/test_gui.py
index 7713c87..e0bd570 100644
--- a/tests/test_gui.py
+++ b/tests/test_gui.py
@@ -22,6 +22,7 @@ from app import (
     image_studio,
     product_status,
     prompts,
+    subscription,
     update_check,
     update_installer,
 )
@@ -11154,6 +11155,62 @@ class GuiTests(TempDirMixin, unittest.TestCase):
 
         self.assert_removed(temp_dir)
 
+    def test_main_window_displays_active_subscription_in_header(self):
+        with self.make_temp_dir() as temp_dir:
+            window = MainWindow(config=self.make_config(temp_dir))
+            self.addCleanup(window.close)
+            status = subscription.SubscriptionStatus(
+                subscription.STATUS_ACTIVE,
+                account_name="主账号",
+                plan_name="专业版",
+                expires_at="2026-08-20T23:59:59+08:00",
+            )
+
+            window._apply_subscription_status(status, show_prompt=False)
+
+            self.assertIn("主账号 · 专业版 · 有效至2026-08-20", window._subscription_label.text())
+            self.assertTrue(
+                all(window.tabs.isTabEnabled(index) for index in range(window.tabs.count()))
+            )
+
+    def test_main_window_restricts_tabs_when_subscription_is_invalid(self):
+        with self.make_temp_dir() as temp_dir:
+            window = MainWindow(config=self.make_config(temp_dir))
+            self.addCleanup(window.close)
+            status = subscription.SubscriptionStatus(subscription.STATUS_EXPIRED)
+
+            window._apply_subscription_status(status, show_prompt=False)
+
+            for index, title in enumerate(TAB_TITLES):
+                self.assertEqual(title == "设置", window.tabs.isTabEnabled(index))
+            self.assertEqual(TAB_TITLES.index("设置"), window.tabs.currentIndex())
+
+    def test_generate_and_suite_preflight_can_stop_new_submissions(self):
+        with self.make_temp_dir() as temp_dir:
+            config = self.make_config(temp_dir)
+            actions = []
+
+            def deny(action):
+                actions.append(action)
+                return False
+
+            generate_tab = GenerateTab(
+                config=config,
+                subscription_preflight_callback=deny,
+            )
+            self.addCleanup(generate_tab.close)
+            generate_tab.start_generate()
+
+            suite_tab = ProductSuiteTab(
+                config=config,
+                db_path=config["db_path"],
+                subscription_preflight_callback=deny,
+            )
+            self.addCleanup(suite_tab.close)
+            self.assertFalse(suite_tab.start_generation(None))
+
+            self.assertEqual(["开始 AI 生成", "生成商品套图"], actions)
+
     def test_accounts_tab_launch_failure_restores_controls(self):
         with self.make_temp_dir() as temp_dir:
             cfg = self.make_config(temp_dir)
diff --git a/tests/test_subscription.py b/tests/test_subscription.py
new file mode 100644
index 0000000..71be7bb
--- /dev/null
+++ b/tests/test_subscription.py
@@ -0,0 +1,156 @@
+import os
+import unittest
+
+from _helpers import TempDirMixin
+
+from app import ai, appconfig, subscription
+
+
+class SubscriptionTests(TempDirMixin, unittest.TestCase):
+    def _config(self, temp_dir):
+        cmhub_path = os.path.join(temp_dir, "cmhub.json")
+        appconfig.save_cmhub_config({"api_key": "test-key"}, path=cmhub_path)
+        return {
+            "cmhub_config_path": cmhub_path,
+            "ai": {
+                "use_system_proxy": False,
+                "cmhub": {
+                    "base_url": "https://cm.example.com",
+                    "connect_timeout": 66,
+                },
+            },
+        }
+
+    def test_missing_key_requires_configuration(self):
+        with self.make_temp_dir() as temp_dir:
+            config = self._config(temp_dir)
+            appconfig.save_cmhub_config({"api_key": ""}, path=config["cmhub_config_path"])
+
+            result = subscription.check_status(config)
+
+            self.assertEqual(subscription.STATUS_NOT_CONFIGURED, result.state)
+            self.assertFalse(result.allows_product_workflows)
+
+    def test_active_response_returns_safe_display_fields(self):
+        with self.make_temp_dir() as temp_dir:
+            calls = []
+
+            def request_json(*args, **kwargs):
+                calls.append((args, kwargs))
+                return {
+                    "product_code": "cmshopee",
+                    "account": {"display_name": "主账号"},
+                    "plan": {"code": "pro", "display_name": "专业版"},
+                    "status": "active",
+                    "expires_at": "2026-08-20T23:59:59+08:00",
+                    "grace_expires_at": None,
+                    "manage_url": "https://cm.example.com/user/subscriptions/cmshopee",
+                    "notice_id": "notice-1",
+                }
+
+            result = subscription.check_status(
+                self._config(temp_dir),
+                request_json=request_json,
+            )
+
+            self.assertEqual(subscription.STATUS_ACTIVE, result.state)
+            self.assertTrue(result.allows_product_workflows)
+            self.assertEqual("主账号", result.account_name)
+            self.assertEqual("专业版", result.plan_name)
+            self.assertEqual("2026-08-20", subscription.format_expiry(result.expires_at))
+            self.assertEqual(
+                "https://cm.example.com/user/subscriptions/cmshopee",
+                result.manage_url,
+            )
+            self.assertEqual("GET", calls[0][0][0])
+            self.assertNotIn("test-key", repr(result))
+
+    def test_grace_and_expired_states_are_distinct(self):
+        with self.make_temp_dir() as temp_dir:
+            config = self._config(temp_dir)
+
+            def grace_request(*args, **kwargs):
+                return {
+                    "product_code": "cmshopee",
+                    "account": {"display_name": "主账号"},
+                    "plan": {"display_name": "专业版"},
+                    "status": "grace",
+                    "expires_at": "2026-08-20T23:59:59+08:00",
+                    "grace_expires_at": "2026-08-23T23:59:59+08:00",
+                }
+
+            grace = subscription.check_status(config, request_json=grace_request)
+            self.assertEqual(subscription.STATUS_GRACE, grace.state)
+            self.assertTrue(grace.allows_product_workflows)
+
+            def expired_request(*args, **kwargs):
+                return {
+                    "product_code": "cmshopee",
+                    "account": {"display_name": "主账号"},
+                    "plan": {"display_name": "专业版"},
+                    "status": "expired",
+                    "expires_at": "2026-08-20T23:59:59+08:00",
+                }
+
+            expired = subscription.check_status(config, request_json=expired_request)
+            self.assertEqual(subscription.STATUS_EXPIRED, expired.state)
+            self.assertFalse(expired.allows_product_workflows)
+
+    def test_legacy_404_keeps_existing_workflows_available(self):
+        with self.make_temp_dir() as temp_dir:
+            def request_json(*args, **kwargs):
+                raise ai.CMHubError("not_found", "接口不存在", status=404)
+
+            result = subscription.check_status(
+                self._config(temp_dir),
+                request_json=request_json,
+            )
+
+            self.assertEqual(subscription.STATUS_LEGACY, result.state)
+            self.assertTrue(result.allows_product_workflows)
+            self.assertFalse(result.interface_available)
+
+    def test_auth_error_and_network_failure_have_different_states(self):
+        with self.make_temp_dir() as temp_dir:
+            config = self._config(temp_dir)
+
+            def invalid_key(*args, **kwargs):
+                raise ai.CMHubError("unauthorized", "不应展示", status=401)
+
+            result = subscription.check_status(config, request_json=invalid_key)
+            self.assertEqual(subscription.STATUS_KEY_INVALID, result.state)
+            self.assertNotIn("不应展示", result.user_message)
+
+            def network_failure(*args, **kwargs):
+                raise ai.CMHubError("network_error", "不应展示")
+
+            result = subscription.check_status(config, request_json=network_failure)
+            self.assertEqual(subscription.STATUS_UNAVAILABLE, result.state)
+            self.assertNotIn("不应展示", result.user_message)
+
+    def test_invalid_product_or_external_manage_url_is_not_trusted(self):
+        with self.make_temp_dir() as temp_dir:
+            config = self._config(temp_dir)
+
+            def wrong_product(*args, **kwargs):
+                return {"product_code": "another-product", "status": "active"}
+
+            result = subscription.check_status(config, request_json=wrong_product)
+            self.assertEqual(subscription.STATUS_UNAVAILABLE, result.state)
+
+            def external_manage_url(*args, **kwargs):
+                return {
+                    "product_code": "cmshopee",
+                    "account": {"display_name": "主账号"},
+                    "plan": {"display_name": "专业版"},
+                    "status": "required",
+                    "manage_url": "https://other.example.com/account",
+                }
+
+            result = subscription.check_status(config, request_json=external_manage_url)
+            self.assertEqual(subscription.STATUS_REQUIRED, result.state)
+            self.assertEqual("", result.manage_url)
+
+
+if __name__ == "__main__":
+    unittest.main()