feat(modules): 帮助中心、工单、工作流与多渠道接入

补齐 FAQ、帮助中心、工单、可视化工作流及 Telegram/WhatsApp/Slack 等渠道模块。

frontend/src/composables/useTicketingSettings.ts

@@ -0,0 +1,62 @@
+/*
+Copyright 2024-2026 ChatterMate
+
+Licensed under the Apache License, Version 2.0 (the "License");
+you may not use this file except in compliance with the License.
+You may obtain a copy of the License at
+
+    http://www.apache.org/licenses/LICENSE-2.0
+
+Unless required by applicable law or agreed to in writing, software
+distributed under the License is distributed on an "AS IS" BASIS,
+WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+See the License for the specific language governing permissions and
+limitations under the License.
+*/
+
+import { onMounted, ref } from 'vue'
+import { toast } from 'vue-sonner'
+import { ticketService } from '@/services/tickets'
+import type { TicketSettings } from '@/types/ticket'
+
+export function useTicketingSettings() {
+  const settings = ref<TicketSettings | null>(null)
+  const isLoading = ref(true)
+  const isSaving = ref(false)
+  const error = ref<string | null>(null)
+  const planGated = ref(false)
+
+  async function load() {
+    isLoading.value = true
+    try {
+      settings.value = await ticketService.getSettings()
+      error.value = null
+      planGated.value = false
+    } catch (e: any) {
+      planGated.value = /plan/i.test(e?.message || '')
+      error.value = e?.message || '加载工单设置失败'
+    } finally {
+      isLoading.value = false
+    }
+  }
+
+  async function save(patch: Partial<TicketSettings>) {
+    if (!settings.value || isSaving.value) return
+    isSaving.value = true
+    const previous = { ...settings.value }
+    Object.assign(settings.value, patch)
+    try {
+      settings.value = await ticketService.updateSettings(patch)
+      toast.success('工单设置已保存')
+    } catch (e: any) {
+      settings.value = previous
+      toast.error(e?.message || '保存工单设置失败')
+    } finally {
+      isSaving.value = false
+    }
+  }
+
+  onMounted(load)
+
+  return { settings, isLoading, isSaving, error, planGated, load, save }
+}