重构回忆录为 story-first / markdown-first 架构并整合图片意图与前端 UI 修复
本次 squash merge 将 codex-story-first-image-intent 的整体改动合入 development,核心内容包括: 1. 后端数据与迁移:新增 stories、story_versions、story_image_intents、chapter_cover_intents、assets 等模型与 Alembic 迁移,建立 story-first、markdown-first、asset-first 的主数据链路。 2. 生成与任务链:引入 StoryBuilderOrchestrator、ChapterComposerOrchestrator、story_image_tasks、chapter_cover_tasks,图片生成从正文占位符改为结构化 intent -> asset -> markdown 回填。 3. 并发与一致性:为 story/chapter intent 增加 claim_token、claimed_at、attempt_count,采用数据库原子 claim 为主、Redis 锁为辅,避免重复生成、锁误删和 processing 卡死。 4. Memoir 读写路径:章节 canonical_markdown 成为正文真源,列表/详情接口补齐 markdown、cover_asset、word_count 等字段,PDF 与 asset 解析链路同步升级。 5. Memory / Retrieval:扩展 transcript ingest、chunking、evidence 检索与 story 聚合基础设施,为后续 story-first RAG 与多 agent 编排提供底座。 6. App 端体验:章节页继续走 MarkdownRenderer 阅读链,同时吸收 fix3-19 的跨平台 UI glitch 修复;更新对话页、首页、文案资源与章节列表映射逻辑。 7. 测试与文档:补充 asset resolver、story image task、章节封面派发、markdown 映射等回归测试,并加入图片占位符退役设计文档。
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@@ -157,3 +157,55 @@ class PDFServiceImagesTest(unittest.IsolatedAsyncioTestCase):
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self.assertGreater(len(pdf_bytes), 100)
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mock_client.get.assert_not_called()
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@patch("app.features.memoir.pdf_service.httpx.AsyncClient")
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@patch("app.features.memoir.pdf_service.TencentCosStorageService")
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async def test_generate_pdf_uses_canonical_markdown_when_present(
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self,
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storage_cls,
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async_client_cls,
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):
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"""PDF 正文真源为 canonical_markdown,与 API / 前端一致。"""
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png_bytes = (
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b"\x89PNG\r\n\x1a\n\x00\x00\x00\rIHDR\x00\x00\x00\x01\x00\x00\x00\x01"
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b"\x08\x02\x00\x00\x00\x90wS\xde\x00\x00\x00\x0cIDATx\x9cc```\x00\x00"
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b"\x00\x04\x00\x01\xf6\x178U\x00\x00\x00\x00IEND\xaeB`\x82"
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)
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mock_response = MagicMock()
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mock_response.content = png_bytes
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mock_response.raise_for_status = MagicMock()
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mock_client = AsyncMock()
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mock_client.get.return_value = mock_response
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async_client_cls.return_value.__aenter__ = AsyncMock(return_value=mock_client)
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async_client_cls.return_value.__aexit__ = AsyncMock(return_value=False)
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storage = MagicMock()
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storage.get_download_url.return_value = "https://signed.example.com/img.png"
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storage_cls.from_env.return_value = storage
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service = PDFService()
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book = type("BookStub", (), {"title": "我的回忆录"})()
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chapter = type(
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"ChapterStub",
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(),
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{
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"title": "童年",
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"canonical_markdown": "开头。\n\n{{{{IMAGE:南方小镇}}}}\n\n结尾。",
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"sections": [],
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"content": "",
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"images": [
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{
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"index": 0,
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"placeholder": "{{{{IMAGE:南方小镇}}}}",
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"url": None,
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"storage_key": "memoirs/u1/c1/0.png",
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"status": "completed",
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}
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],
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},
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)()
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pdf_bytes = await service.generate_pdf(book, [chapter])
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self.assertGreater(len(pdf_bytes), 100)
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self.assertNotIn(b"IMAGE:", pdf_bytes)
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mock_client.get.assert_called_once()
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