chore: import storyforge baseline clean

TECH_ARCHITECTURE.md

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+# StoryForge Technical Architecture
+
+## Core Components
+
+- Android App: 素材探索、文案生产、个人配置、管理员审批、OTA
+- Collector Service: FastAPI + SQLite，负责业务流程编排
+- Local Model API: 默认指向本机 `cli-proxy-api`
+- FastGPT: 负责数据集和后续工作流扩展
+- MongoDB / PostgreSQL + pgvector / Redis / MinIO: FastGPT 运行依赖
+
+## Main Flow
+
+User -> Android App -> Collector Service -> Local Model / FastGPT
+
+## Data Isolation
+
+- `accounts`
+- `knowledge_bases`
+- `assistants`
+- `assistant_knowledge_bases`
+- `knowledge_documents`
+- `jobs`
+- `model_profiles`
+- `app_updates`
+
+每个用户的数据通过 `user_id` 进行隔离。