feat: move unified generation to background worker

admin-frontend/src/components/CreateStoryModal.vue

@@ -1,11 +1,10 @@
 <script setup lang="ts">
 import { ref, computed, watch } from 'vue'
-import type { Component } from 'vue'
-import { useRouter } from 'vue-router'
-import { useI18n } from 'vue-i18n'
-import { useUserStore } from '../stores/user'
-import { useStorybookStore } from '../stores/storybook'
-import { api } from '../api/client'
+import type { Component } from 'vue'
+import { useRouter } from 'vue-router'
+import { useI18n } from 'vue-i18n'
+import { useUserStore } from '../stores/user'
+import { api } from '../api/client'
 import BaseButton from './ui/BaseButton.vue'
 import BaseInput from './ui/BaseInput.vue'
 import BaseSelect from './ui/BaseSelect.vue'
@@ -34,10 +33,9 @@ const emit = defineEmits<{
   'update:modelValue': [value: boolean]
 }>()
 
-const { t } = useI18n()
-const router = useRouter()
-const userStore = useUserStore()
-const storybookStore = useStorybookStore()
+const { t } = useI18n()
+const router = useRouter()
+const userStore = useUserStore()
 
 // State
 const inputType = ref<'keywords' | 'full_story'>('keywords')
@@ -88,28 +86,63 @@ const generationTitle = computed(() =>
 const generationSteps = computed(() => {
   if (requestedOutputMode.value === 'storybook') {
     return [
-      '正在整理主题和成长目标...',
-      '生成绘本分镜和每页文字...',
-      '保存绘本主记录，确保刷新也能找回...',
-      '补全封面和分页插图...',
-      '马上进入可翻页阅读模式。',
+      '正在提交后台任务...',
+      'Worker 会生成绘本分镜和每页文字...',
+      '主记录一落库就能通过 ID 找回...',
+      '插图会继续在后台补全...',
+      '稍后自动进入可翻页阅读模式。',
     ]
   }
 
   return [
-    '正在整理孩子档案和故事主题...',
-    '生成可先阅读的故事正文...',
-    '保存故事主记录，避免结果丢失...',
-    '补全封面图，失败也可稍后重试...',
+    '正在提交后台任务...',
+    'Worker 会生成故事正文并保存主记录...',
+    '主内容一可读就会自动跳转详情页...',
+    '封面会继续在后台补全，失败也能重试...',
     '马上进入故事详情页。',
   ]
 })
+
+interface GenerationAcceptedResponse {
+  id: number | null
+  generation_job_id: string | null
+}
+
+interface GenerationJobDetail {
+  story_id: number | null
+  is_terminal: boolean
+  error_message: string | null
+}
+
+const JOB_POLL_INTERVAL_MS = 1500
+const JOB_POLL_MAX_ATTEMPTS = 80
 
 // Methods
-function close() {
-  emit('update:modelValue', false)
-  error.value = ''
-}
+function close() {
+  emit('update:modelValue', false)
+  error.value = ''
+}
+
+function sleep(ms: number) {
+  return new Promise((resolve) => {
+    window.setTimeout(resolve, ms)
+  })
+}
+
+async function waitForStoryId(jobId: string) {
+  for (let attempt = 0; attempt < JOB_POLL_MAX_ATTEMPTS; attempt += 1) {
+    const detail = await api.get<GenerationJobDetail>(`/api/generations/jobs/${jobId}`)
+    if (detail.story_id) {
+      return detail.story_id
+    }
+    if (detail.is_terminal) {
+      throw new Error(detail.error_message || '生成失败，请稍后重试')
+    }
+    await sleep(JOB_POLL_INTERVAL_MS)
+  }
+
+  throw new Error('任务已提交，但主内容落库超时，请稍后到故事库查看最新结果')
+}
 
 async function fetchProfiles() {
   if (!userStore.user) return
@@ -173,25 +206,22 @@ async function generateStory() {
     if (selectedProfileId.value) payload.child_profile_id = selectedProfileId.value
     if (selectedUniverseId.value) payload.universe_id = selectedUniverseId.value
 
-    if (requestedOutputMode.value === 'storybook') {
-      const response = await api.post<any>('/api/generations', payload)
+    const accepted = await api.post<GenerationAcceptedResponse>('/api/generations', payload)
+    const jobId = accepted.generation_job_id
+    if (!jobId) {
+      throw new Error('生成任务已创建，但缺少任务编号')
+    }
 
-      storybookStore.setStorybook(response)
-      close()
-      const storybookPath = response.id ? `/storybook/view/${response.id}` : '/storybook/view'
-      router.push(storybookPath)
+    const storyId = accepted.id ?? await waitForStoryId(jobId)
+    close()
+    if (requestedOutputMode.value === 'storybook') {
+      router.push(`/storybook/view/${storyId}`)
     } else {
-      const result = await api.post<any>('/api/generations', payload)
-      const query: Record<string, string> = {}
-      if (result.errors && Object.keys(result.errors).length > 0) {
-        if (result.errors.image) query.imageError = '1'
-      }
-      close()
-      router.push({ path: `/story/${result.id}`, query })
-    }
-  } catch (e) {
-    error.value = e instanceof Error ? e.message : '生成失败'
-  } finally {
+      router.push(`/story/${storyId}`)
+    }
+  } catch (e) {
+    error.value = e instanceof Error ? e.message : '生成失败'
+  } finally {
     loading.value = false
   }
 }

admin-frontend/src/components/GenerationTrace.vue

@@ -116,6 +116,7 @@ function statusLabel(status?: string) {
 function eventLabel(eventType: string) {
   const labels: Record<string, string> = {
     request_accepted: '请求接收',
+    worker_started: '后台任务开始',
     context_prepared: '上下文准备',
     narrative_generated: '正文生成',
     story_saved: '故事保存',