Fix admin login and add subscription popup settings

admin/src/pages/site-settings-page.tsx

@@ -158,6 +158,10 @@ function toPayload(form: AdminSiteSettingsResponse): SiteSettingsPayload {
     notificationWebhookUrl: form.notification_webhook_url,
     notificationCommentEnabled: form.notification_comment_enabled,
     notificationFriendLinkEnabled: form.notification_friend_link_enabled,
+    subscriptionPopupEnabled: form.subscription_popup_enabled,
+    subscriptionPopupTitle: form.subscription_popup_title,
+    subscriptionPopupDescription: form.subscription_popup_description,
+    subscriptionPopupDelaySeconds: form.subscription_popup_delay_seconds,
     searchSynonyms: form.search_synonyms,
   }
 }
@@ -595,6 +599,70 @@ export function SiteSettingsPage() {
           </CardContent>
         </Card>
 
+          <Card>
+            <CardHeader>
+              <CardTitle>订阅弹窗</CardTitle>
+              <CardDescription>
+                前台会在用户停留一段时间并有滚动/交互后，再延迟弹出订阅窗口；这里统一控制开关和文案。
+              </CardDescription>
+            </CardHeader>
+            <CardContent className="space-y-5">
+              <label className="flex items-start gap-3 rounded-2xl border border-border/70 bg-background/60 p-4">
+                <input
+                  type="checkbox"
+                  checked={form.subscription_popup_enabled}
+                  onChange={(event) =>
+                    updateField('subscription_popup_enabled', event.target.checked)
+                  }
+                  className="mt-1 h-4 w-4 rounded border-input text-primary focus:ring-ring"
+                />
+                <div>
+                  <div className="font-medium">开启前台订阅弹窗</div>
+                  <p className="mt-1 text-sm leading-6 text-muted-foreground">
+                    开启后，首页不再塞一个突兀的大块订阅卡片，而是通过风格统一的弹窗承接订阅转化。
+                  </p>
+                </div>
+              </label>
+
+              <div className="grid gap-4 lg:grid-cols-2">
+                <Field label="弹窗标题" hint="建议直接传达价值，例如“订阅更新”或“别错过新文章”。">
+                  <Input
+                    value={form.subscription_popup_title}
+                    onChange={(event) =>
+                      updateField('subscription_popup_title', event.target.value)
+                    }
+                  />
+                </Field>
+                <Field label="触发延迟（秒）" hint="建议保持在 10～20 秒，避免首屏强打断。">
+                  <Input
+                    type="number"
+                    min={3}
+                    max={120}
+                    value={form.subscription_popup_delay_seconds}
+                    onChange={(event) =>
+                      updateField(
+                        'subscription_popup_delay_seconds',
+                        event.target.value ? Number(event.target.value) : 18,
+                      )
+                    }
+                  />
+                </Field>
+              </div>
+
+              <Field
+                label="弹窗说明"
+                hint="建议明确订阅收益、需要邮箱确认，以及可随时退订，降低打扰感。"
+              >
+                <Textarea
+                  value={form.subscription_popup_description}
+                  onChange={(event) =>
+                    updateField('subscription_popup_description', event.target.value)
+                  }
+                />
+              </Field>
+            </CardContent>
+          </Card>
+
           <Card>
             <CardHeader>
               <CardTitle>SEO、搜索与通知</CardTitle>

admin/src/pages/subscriptions-page.tsx

@@ -172,7 +172,7 @@ export function SubscriptionsPage() {
         <div className="space-y-3">
           <Badge variant="secondary">订阅与推送</Badge>
           <div>
-            <h2 className="text-3xl font-semibold tracking-tight">订阅中心 / 异步投递 / Digest</h2>
+            <h2 className="text-3xl font-semibold tracking-tight">订阅中心 / 异步投递 / 汇总简报</h2>
             <p className="mt-2 max-w-3xl text-sm leading-7 text-muted-foreground">
               这里统一管理邮件订阅、Webhook / Discord / Telegram / ntfy 推送目标；当前投递走异步队列，并支持 retry pending 状态追踪。
             </p>