feat: remove forum feature (Phase 1)

assets/admin/src/pages/content/FloatingButtonsSettings.vue

@@ -372,7 +372,6 @@ const typeOptions = [
   { label: '主题切换', value: 'theme_mode' },
   { label: '页面二维码', value: 'qrcode' },
   { label: '发布入口', value: 'add' },
-  { label: '购物车', value: 'shop_cart' },
   { label: 'QQ 客服', value: 'service_qq' },
   { label: '微信客服', value: 'service_wechat' },
   { label: '会员入口', value: 'pay_vip' },
@@ -397,7 +396,7 @@ const addPresetOptions = computed(() => {
 })
 
 // pay_vip always opens the site VIP modal on the front-end — no link required.
-const needsLink = computed(() => ['custom', 'add', 'shop_cart'].includes(editingItem.type) && !editingItem.hover)
+const needsLink = computed(() => ['custom', 'add'].includes(editingItem.type) && !editingItem.hover)
 // Custom hover HTML only; VIP uses modal, not free-form hover content.
 const supportsHover = computed(() => editingItem.type === 'custom')
 const supportsActionMode = computed(() => ['service_qq', 'service_wechat'].includes(editingItem.type))
@@ -444,7 +443,6 @@ function applyTypeDefaults(type) {
     service_wechat: { icon: 'fab fa-weixin', icon_dark: '', icon_light: '', text: '微信', desc: '扫码添加微信', link: '', hover: '', action_mode: 'link', qr_size: 120 },
     pay_vip: { icon: 'fas fa-gem', icon_dark: '', icon_light: '', text: '会员', desc: '开通/升级会员弹窗', link: '', hover: '', action_mode: 'link', qr_size: 120 },
     add: { icon: 'fas fa-plus', icon_dark: '', icon_light: '', text: '发布', desc: '发布内容', link: '', hover: '', action_mode: 'link', qr_size: 120 },
-    shop_cart: { icon: 'fas fa-shopping-cart', icon_dark: '', icon_light: '', text: '购物车', desc: '购物车入口', link: '', hover: '', action_mode: 'link', qr_size: 120 },
   }
   return map[type] || map.custom
 }