feat(dataset): 支持数据任务批量删除

上次合并 rebase 时远端引入的 !.env 规则会强制追踪环境文件，
存在将含敏感信息的 .env 误提交的风险。恢复为 .env 忽略规则，
同时保留 !.env.example 以便示例文件继续入库。

.dockerignore

@@ -0,0 +1,11 @@
+.git
+.gitignore
+node_modules
+frontend/node_modules
+frontend/dist
+frontend/.vite
+npm-debug.log*
+docker-compose*.yml
+README.md
+design-qa.md
+docs

.gitignore

@@ -12,6 +12,10 @@ __pycache__/
 build/
 develop-eggs/
 dist/
+!frontend/dist/
+!frontend/dist/**
+node_modules/
+*.tsbuildinfo
 downloads/
 eggs/
 .eggs/
@@ -37,6 +41,16 @@ MANIFEST
 pip-log.txt
 pip-delete-this-directory.txt
 
+# Runtime data and logs
+runtime/
+backend/runtime/
+backend/storage/
+logs/
+backend/logs/
+*.db
+*.sqlite
+*.sqlite3
+
 # Unit test / coverage reports
 htmlcov/
 .tox/
@@ -130,6 +144,7 @@ celerybeat.pid
 
 # Environments
 .env
+!.env.example
 .venv
 env/
 venv/
@@ -137,6 +152,14 @@ ENV/
 env.bak/
 venv.bak/
 
+# Local backend config (含数据库账号密码等敏感信息，勿提交)
+backend/config.yaml
+
+# Agent / IDE 工具产物，不应进版本库
+.codex-backups/
+.pnpm-store/
+.zcode/
+
 # Spyder project settings
 .spyderproject
 .spyproject
@@ -174,3 +197,14 @@ cython_debug/
 # PyPI configuration file
 .pypirc
 
+docker/llamafactory-latest.tar.gz
+# Compute data - 保留目录结构和 README，忽略子目录内容（日志、模型、数据集等）
+!docker/compute/data/yg-ft/logs/
+docker/compute/data/yg-ft/datasets/*
+docker/compute/data/yg-ft/models/*
+docker/compute/data/yg-ft/outputs/*
+docker/compute/data/yg-ft/logs/**
+!docker/compute/data/yg-ft/logs/compute/
+!docker/compute/data/yg-ft/logs/training/
+!docker/compute/data/yg-ft/**/.gitkeep
+!docker/compute/data/yg-ft/**/README.md

README.md

@@ -1,133 +1,198 @@
-# YG_FT
+# YG_FT 模型微调平台
 
-远光微调平台 - 面向大语言模型的微调、评测、推理与对比一体化前端。
+YG_FT 是一个面向企业治理场景的模型微调平台，覆盖用户中心、多租户、项目隔离、数据集管理、模型管理、训练任务、评测、推理、审批流、审计留存、算力调度和训练引擎适配。
 
-## 技术栈
+当前前端已有基础页面，后端与算力平台已按多人协作开发方式建立工程骨架，并开始实现正式系统主链路能力。当前代码和 SQL 均作为后续生产演进基线维护，不再以一次性演示或静态 Mock 为开发准则。
 
-| 类别 | 技术 | 版本 |
+## 总体架构
-|------|------|------|
-| 框架 | Vue 3 | ^3.5.13 |
-| 语言 | TypeScript | ~5.7.2 |
-| 构建工具 | Vite | ^6.0.7 |
-| 路由 | Vue Router | ^4.5.0 |
-| 状态管理 | Pinia | ^2.3.0 |
-| UI 组件库 | Element Plus | ^2.9.1 |
-| HTTP 客户端 | axios | ^1.7.9 |
-| 图表 | ECharts / vue-echarts | ^6.1.0 / ^8.0.1 |
-| Markdown | marked + DOMPurify | ^15.0.5 / ^3.2.3 |
-| 编辑器 | md-editor-v3 | ^5.1.4 |
-| 工具集 | @vueuse/core | ^11.3.0 |
-| 样式 | Sass | ^1.83.0 |
 
-**项目版本**：1.0.0
+```text
+YG_FT/
+  frontend/                 # 前端控制台
+  backend/                  # FastAPI 应用平台后端
+    app/
+      api/v1/               # 对前端暴露的 REST API
+      core/                 # 配置、日志、中间件、权限等基础能力
+      db/                   # 数据库连接、迁移、事务工具
+      modules/              # 业务模块目录
+      schemas/              # Pydantic 入参/出参模型
+      services/             # 跨模块应用服务
+      workers/              # 后台任务入口
+    requirements.txt        # 后端 Python 第三方依赖
+  compute/                  # 算力平台与训练框架适配层
+    api/                    # 内部 Compute API
+    agent/                  # 单机多 GPU 调度与进程管理
+    engines/llama_factory/  # LLaMA-Factory 适配器
+    file_gateway/           # 本地文件上传、下载、导入、产物管理
+  docs/                     # 需求、接口、数据库、开发计划和部署文档
+  docker/                   # 容器化配置
+```
 
-## 环境要求
+## 平台分层
 
-- **Node.js** >= 18（推荐 20 LTS）
+| 层级 | 职责 | 主要目录 |
-- **npm** >= 9
+| --- | --- | --- |
-- 后端服务运行于 `http://localhost:7861`（前端通过代理转发，见下文）
+| 前端控制台 | 用户操作入口、任务看板、项目/模型/数据集/训练/审批/审计页面 | `frontend/` |
+| 应用平台后端 | 用户中心、多租户、RBAC/ABAC、项目隔离、元数据、审批流、审计、API 编排 | `backend/` |
+| 算力平台 | GPU 发现、资源锁定、训练进程管理、日志采集、产物归档、任务状态同步 | `compute/` |
+| 训练引擎 | 当前固定接入 LLaMA-Factory，预留其他训练平台适配标准 | `compute/engines/` |
+| 数据层 | PostgreSQL、Redis、本地文件存储、日志归档 | `docs/postgres-schema.sql` |
 
-## 快速开始
+## 当前开发基线
 
-### 1. 安装依赖
+- 使用 FastAPI 提供统一 API 响应结构 `{ code, message, data }`。
+- 本地运行阶段统一使用 PostgreSQL，后端启动时会在 PG 中初始化当前运行表和系统内置账号；模型、数据集、算力节点、GPU、微调任务等业务数据必须通过页面、接口或正式导入流程产生。
+- 支持登录、模型管理、数据集管理、微调任务创建/启动/停止/进度轮询。
+- 支持训练日志、loss 指标、checkpoint 和训练产物接口；真实训练执行器接入前，联调状态机必须通过显式环境变量开启。
+- 支持多算力节点、GPU、任务队列、资源副本和资源同步状态接口。
+- 前端新增 `/compute` 算力节点页面，展示节点地址、权重、标签、启用状态、GPU、队列和资源副本。
+- `compute/engines/llama_factory/adapter.py` 提供 LLaMA-Factory 参数校验、命令生成和日志解析基础能力。
+
+## 前后端一键启动
+
+首次使用前，请先按下方“后端启动”和“前端启动”说明安装依赖，并确保
+PostgreSQL 已可用。之后在项目根目录执行：
+
+```bash
+bash ./start.sh
+```
+
+脚本会同时启动前端 `http://localhost:16801` 和后端
+`http://127.0.0.1:17861`，按 `Ctrl+C` 会同时停止两个服务。脚本只负责
+启动前后端，不会自动安装依赖，也不会启动 PostgreSQL、Redis 或算力服务。
+
+仅检查依赖和端口而不启动服务：
+
+```bash
+bash ./start.sh --check
+```
+
+本地启动推荐只配置数据库主机。脚本会复用 `docker/app/.env` 中已有的
+`POSTGRES_USER`、`POSTGRES_PASSWORD` 和 `POSTGRES_DB`，端口默认使用
+PostgreSQL 标准端口 `5432`：
+
+```bash
+DATABASE_HOST='www.caoxiaozhu.com' bash ./start.sh
+```
+
+也可以在 `docker/app/.env` 中增加：
+
+```env
+DATABASE_HOST=www.caoxiaozhu.com
+```
+
+需要使用非标准端口时再设置 `DATABASE_PORT`。`DATABASE_URL` 仍可作为完整连接串
+高级覆盖项；终端环境变量优先级最高。脚本不会输出数据库密码。
+
+## 后端启动
+
+```bash
+cd backend
+python -m venv .venv
+.venv\Scripts\activate
+pip install -r requirements.txt
+uvicorn app.main:app --reload --port 17861
+```
+
+默认接口前缀为 `/modelTF`，例如：
+
+```text
+GET /modelTF/health
+POST /modelTF/login
+GET /modelTF/model-manage
+GET /modelTF/dataset-manage
+GET /modelTF/fine-tune
+GET /modelTF/compute/nodes
+```
+
+本地运行时默认 PostgreSQL 连接：
+
+```text
+DATABASE_URL=postgresql+psycopg://yg_ft:change_me@localhost:15432/yg_ft
+```
+
+本地启动前需要确保 PostgreSQL 已监听 `localhost:15432`，并已创建 `yg_ft` 数据库和 `yg_ft` 用户。后端启动后会自动创建当前运行表并写入内置管理员账号，运行数据统一写入 PostgreSQL。
+
+开发阶段内置登录账号：
+
+| 角色 | 账号 | 密码 | 说明 |
+| --- | --- | --- | --- |
+| 超级管理员 | `admin` | `admin123` | 拥有当前全部页面权限 |
+| 操作员 | `operator` | `operator123` | 拥有业务操作相关页面权限 |
+
+以上账号仅用于本地开发和联调。生产环境初始化后应立即修改密码，或改为企业统一身份认证/管理员初始化流程。
+
+## 前端启动
 
 ```bash
 cd frontend
 npm install
-```
-
-### 2. 启动开发服务器
-
-```bash
 npm run dev
 ```
 
-开发服务器默认运行在 `http://localhost:6801`。
+前端开发服务默认运行在 `http://localhost:16801`，并通过 Vite proxy 将 `/modelTF` 转发到 `http://localhost:17861`。
 
-### 3. 构建生产包
+## 算力服务启动
 
 ```bash
-npm run build      # 类型检查 + 生产构建，产物输出到 dist/
+cd compute
-npm run preview    # 本地预览构建产物
+uvicorn api.main:app --reload --port 19100
 ```
 
-### 4. 类型检查
+默认 `COMPUTE_MODE=real`。真实 GPU 接入时，在每台算力服务器上部署 Compute API、Agent、File Gateway 和 LLaMA-Factory，应用平台通过 `compute_nodes.api_base_url` 和 `compute_nodes.file_gateway_url` 主动轮询。仅在隔离联调环境可显式设置 `COMPUTE_MODE=simulator` 或 `COMPUTE_EXECUTION_MODE=simulator`。
+
+## 日志
+
+后端日志模块位于 `backend/app/core/logging.py`，说明文档见：
+
+- `docs/backend-logging.md`
+
+默认输出：
+
+```text
+logs/backend-YYYY-MM-DD.log
+logs/error-YYYY-MM-DD.log
+```
+
+日志格式为 JSON Lines，单个文件不超过 20MB，只保留最近 10 天。
+
+## 主要文档
+
+- `docs/platform-architecture-requirements.md`：平台需求、功能模块、页面补全建议。
+- `docs/menu-functional-requirements.md`：当前菜单、二级路由、规划菜单、功能需求、接口和数据库映射。
+- `docs/backend-api-design.md`：FastAPI 接口分组、参数定义、权限说明。
+- `docs/postgres-schema.sql`：PostgreSQL 数据库脚本，包含权限、用户中心、多租户、审批、审计等模型。
+- `docs/system-development-plan.md`：多人协作开发计划，按前端、后端、DB、部署拆分。
+- `docs/team-development-plan.md`：3-4 人并行开发分工计划，按人员边界标注页面、接口、数据库和交付节奏。
+- `docs/first-version-development-plan.md`：当前系统主链路开发计划，覆盖前端、后端、DB、Compute API、GPU 和 LLaMA-Factory 适配。
+- `docs/backend-logging.md`：后端日志模块使用说明。
+- `docs/deployment-plan.md`：后期部署方案，覆盖单机算力服务器部署与应用/算力分离部署。
+- `docker/README.md`：Docker 部署入口，包含应用服务器和算力服务器两套 Compose 使用方式。
+
+## Docker 部署入口
+
+应用服务器：
 
 ```bash
-npm run type-check
+cd docker/app
+cp .env.example .env
+docker compose up -d
 ```
 
-## 测试
+算力服务器：
-
-内置基于 Playwright 的 UI 回归脚本，首次运行前需安装浏览器：
 
 ```bash
-npx playwright install chromium
+cd docker/compute
+cp .env.example .env
+docker compose up -d
 ```
 
-执行已注册的回归脚本：
+两套 Compose 均采用代码外挂方式运行，镜像只包含运行时环境和第三方依赖。项目根目录不再保留 `Dockerfile` 和 `docker-compose.yml`，部署时统一进入 `docker/app` 或 `docker/compute` 目录执行。
 
-```bash
+## 后续开发原则
-npm run test:data-process-wizard   # 数据处理向导
-npm run test:model-manage          # 模型管理
-npm run test:training-log-layout   # 训练日志布局
-npm run test:page-surface          # 页面表层级
-```
 
-其余脚本可直接运行：
+- 接口实现优先遵循 `docs/backend-api-design.md`。
-
+- 数据库实现优先遵循 `docs/postgres-schema.sql`，后续通过 Alembic 迁移管理变更。
-```bash
+- 前端页面与后端接口、数据库表之间的映射以文档中的“对应页面/功能模块”为准。
-node scripts/regression-back-navigation.mjs       # 返回导航
+- 训练引擎适配必须通过 `compute/engines/` 下的标准接口，不在应用平台后端直接拼接训练命令。
-node scripts/regression-fine-tune-create-ui.mjs   # 调优创建 UI
+- 敏感信息不得写入日志，生产环境密钥通过环境变量或密钥管理系统注入。
-```
-
-> 回归脚本默认连接 `http://localhost:6801`，需先启动开发服务器。
-
-## 目录结构
-
-```
-YG-FT/
-├── frontend/              # 前端工程（Vue 3 SPA）
-│   ├── src/
-│   │   ├── api/           # axios 封装 + 各业务模块 API
-│   │   ├── components/    # 公共组件
-│   │   ├── composables/   # 组合式函数
-│   │   ├── constants/     # 常量与映射表
-│   │   ├── layouts/       # 主布局
-│   │   ├── mock/          # Mock 数据与适配器
-│   │   ├── plugins/       # 第三方插件注册
-│   │   ├── router/        # 路由配置 + 登录守卫
-│   │   ├── stores/        # Pinia 状态
-│   │   ├── styles/        # 全局样式
-│   │   ├── types/         # TypeScript 类型定义
-│   │   └── views/         # 业务页面
-│   ├── scripts/           # UI 回归测试脚本
-│   ├── public/            # 静态资源
-│   └── vite.config.ts     # Vite 构建与代理配置
-├── docs/                  # 设计文档与视觉走查记录
-└── design-qa.md           # 视觉走查汇总
-```
-
-## 端口与代理
-
-| 服务 | 地址 |
-|------|------|
-| 前端开发服务器 | `http://localhost:6801` |
-| 后端 API | `http://localhost:7861` |
-
-前端统一使用 `/api` 相对路径发请求，由 Vite 开发代理转发到后端 `http://localhost:7861`（配置见 `frontend/vite.config.ts`）。
-
-## 业务模块
-
-| 模块 | 说明 |
-|------|------|
-| 登录 | 用户登录鉴权 |
-| 模型调优 | 微调任务创建与管理 |
-| 模型评测 | 评测任务与评测维度配置 |
-| 模型推理 | 在线推理对话 |
-| 模型对比 | 多模型对话与结果对比 |
-| 模型管理 | 模型 CRUD 与权重合并 |
-| 数据集 | 数据集管理与预览 |
-| 数据处理 | 数据处理任务向导 |
-| 工具 | 辅助工具集 |
-| 系统 | 硬件监控、日志、训练日志 |

backend/README.md

@@ -0,0 +1,65 @@
+# Backend Service
+
+后端工程使用 FastAPI，定位为模型微调平台的应用平台服务，负责用户中心、多租户、权限隔离、项目、数据集、模型、训练任务、审批、审计和算力平台编排。
+
+## 目录结构
+
+```text
+backend/
+  app/
+    main.py                  # FastAPI 应用入口
+    api/v1/                  # 对前端暴露的 接口路由
+    core/                    # 配置、日志、中间件、权限等基础能力
+    db/                      # 数据库连接、迁移集成、事务工具
+    modules/                 # 业务模块
+      auth/
+      tenant/
+      project/
+      model/
+      dataset/
+      data_process/
+      fine_tune/
+      eval/
+      inference/
+      approval/
+      audit/
+      compute_gateway/
+      file_gateway/
+      engine_registry/
+      retention/
+      system/
+    schemas/                 # Pydantic 入参/出参模型
+    services/                # 跨模块应用服务
+    workers/                 # 后台任务入口
+  requirements.txt           # 后端第三方依赖
+  logs/                      # 本地开发日志目录，生产环境建议挂载到独立日志盘
+```
+
+## 本地启动
+
+```bash
+cd backend
+python -m venv .venv
+.venv\Scripts\activate
+pip install -r requirements.txt
+uvicorn app.main:app --reload
+```
+
+健康检查：
+
+```text
+GET /modelTF/health
+```
+
+## 日志
+
+日志模块位于 `app/core/logging.py`，使用说明见 `../docs/backend-logging.md`。
+
+默认日志文件：
+
+```text
+logs/backend-YYYY-MM-DD.log
+logs/error-YYYY-MM-DD.log
+```
+
+文件日志为 JSON Lines 格式，单个文件不超过 20MB，只保存最近 10 天，错误日志按 `ERROR` 级别独立拆分，便于 ELK/日志平台采集。

backend/app/__init__.py

@@ -0,0 +1 @@
+"""Application package."""

backend/app/api/__init__.py

@@ -0,0 +1 @@
+"""API package."""

backend/app/api/v1/__init__.py

@@ -0,0 +1 @@
+"""Versioned API package."""

backend/app/api/v1/endpoints/__init__.py

@@ -0,0 +1 @@
+"""API endpoint modules."""

backend/app/api/v1/endpoints/health.py

@@ -0,0 +1,14 @@
+from fastapi import APIRouter
+
+from app.core.logging import get_logger
+from app.db.platform_store import get_platform_store
+
+router = APIRouter()
+logger = get_logger(__name__)
+
+
+@router.get("/health")
+async def health_check() -> dict[str, object]:
+    logger.info("health check requested")
+    return {"code": 0, "message": "ok", "data": get_platform_store().health_metrics()}
+

backend/app/api/v1/router.py

@@ -0,0 +1,10 @@
+from fastapi import APIRouter
+
+from app.api.v1.endpoints.data_process import router as data_process_router
+from app.api.v1.endpoints.platform import router as platform_router
+from app.api.v1.endpoints.health import router as health_router
+
+api_router = APIRouter()
+api_router.include_router(health_router, tags=["health"])
+api_router.include_router(data_process_router, tags=["data-process"])
+api_router.include_router(platform_router, tags=["platform"])

backend/app/core/__init__.py

@@ -0,0 +1 @@
+"""Core infrastructure modules."""

backend/app/core/config.py

@@ -0,0 +1,59 @@
+from dataclasses import dataclass
+from functools import lru_cache
+import os
+
+
+def _int_env(name: str, default: int) -> int:
+    raw = os.getenv(name)
+    if raw is None or raw == "":
+        return default
+    return int(raw)
+
+
+def _list_env(name: str, default: list[str]) -> list[str]:
+    raw = os.getenv(name)
+    if raw is None or raw.strip() == "":
+        return default
+    return [item.strip() for item in raw.split(",") if item.strip()]
+
+
+@dataclass(frozen=True)
+class Settings:
+    app_name: str = os.getenv("APP_NAME", "YG Fine-Tune Platform API")
+    app_env: str = os.getenv("APP_ENV", "local")
+    route_prefix: str = os.getenv("MODELTF_ROUTE_PREFIX", "/modelTF")
+    app_mode: str = os.getenv("APP_MODE", "local")
+    database_url: str = os.getenv("DATABASE_URL", "postgresql+psycopg://yg_ft:change_me@localhost:15432/yg_ft")
+    cors_allow_origins: list[str] = None  # type: ignore[assignment]
+    compute_mode: str = os.getenv("COMPUTE_MODE", "real")
+    compute_status_sync_mode: str = os.getenv("COMPUTE_STATUS_SYNC_MODE", "polling")
+    compute_poll_interval_seconds: int = _int_env("COMPUTE_POLL_INTERVAL_SECONDS", 3)
+    compute_request_timeout_seconds: int = _int_env("COMPUTE_REQUEST_TIMEOUT_SECONDS", 5)
+    compute_service_token: str = os.getenv("COMPUTE_SERVICE_TOKEN", "")
+    log_level: str = os.getenv("LOG_LEVEL", "INFO")
+    log_dir: str = os.getenv("LOG_DIR", "./logs")
+    log_file_prefix: str = os.getenv("LOG_FILE_PREFIX", "backend")
+    log_error_file_prefix: str = os.getenv("LOG_ERROR_FILE_PREFIX", "error")
+    log_max_bytes: int = _int_env("LOG_MAX_BYTES", 20 * 1024 * 1024)
+    log_retention_days: int = _int_env("LOG_RETENTION_DAYS", 10)
+
+    def __post_init__(self) -> None:
+        object.__setattr__(
+            self,
+            "cors_allow_origins",
+            _list_env(
+                "CORS_ALLOW_ORIGINS",
+                [
+                    "http://localhost:16801",
+                    "http://127.0.0.1:16801",
+                    "http://localhost:17861",
+                    "http://127.0.0.1:17861",
+                ],
+            ),
+        )
+
+
+@lru_cache
+def get_settings() -> Settings:
+    return Settings()
+

backend/app/core/logging.py

@@ -0,0 +1,253 @@
+from __future__ import annotations
+
+from contextvars import ContextVar
+from datetime import date, datetime, timedelta
+import json
+import logging
+from logging import Handler, LogRecord
+from pathlib import Path
+import re
+import time
+from typing import Any
+from uuid import uuid4
+
+from fastapi import FastAPI, Request
+
+from app.core.config import Settings, get_settings
+
+request_id_var: ContextVar[str] = ContextVar("request_id", default="-")
+
+
+class RequestIdFilter(logging.Filter):
+    def filter(self, record: LogRecord) -> bool:
+        record.request_id = request_id_var.get()
+        return True
+
+
+class JsonLogFormatter(logging.Formatter):
+    """Format one JSON object per line for ELK/Filebeat collection."""
+
+    def format(self, record: LogRecord) -> str:
+        payload: dict[str, Any] = {
+            "@timestamp": datetime.fromtimestamp(record.created).astimezone().isoformat(
+                timespec="milliseconds"
+            ),
+            "level": record.levelname,
+            "logger": record.name,
+            "message": record.getMessage(),
+            "module": record.module,
+            "function": record.funcName,
+            "file": record.pathname,
+            "line": record.lineno,
+            "process": record.process,
+            "thread": record.thread,
+            "thread_name": record.threadName,
+            "request_id": getattr(record, "request_id", "-"),
+        }
+        if record.exc_info:
+            payload["exception"] = self.formatException(record.exc_info)
+        if record.stack_info:
+            payload["stack"] = self.formatStack(record.stack_info)
+        return json.dumps(payload, ensure_ascii=False, separators=(",", ":"))
+
+
+class DateSizeRotatingFileHandler(Handler):
+    """Rotate log files by date and size while keeping date in every file name."""
+
+    def __init__(
+        self,
+        log_dir: str | Path,
+        file_prefix: str,
+        max_bytes: int,
+        retention_days: int,
+        encoding: str = "utf-8",
+    ) -> None:
+        super().__init__()
+        self.log_dir = Path(log_dir)
+        self.file_prefix = file_prefix
+        self.max_bytes = max_bytes
+        self.retention_days = retention_days
+        self.encoding = encoding
+        self._current_date: date | None = None
+        self._stream: Any | None = None
+        self._current_path: Path | None = None
+        self.log_dir.mkdir(parents=True, exist_ok=True)
+
+    def emit(self, record: LogRecord) -> None:
+        try:
+            message = self.format(record) + self.terminator
+            encoded_size = len(message.encode(self.encoding))
+            self._ensure_stream()
+            if self._should_rotate(encoded_size):
+                self._rotate_by_size()
+                self._ensure_stream(force=True)
+            self._stream.write(message)
+            self.flush()
+            self._cleanup_expired_files()
+        except Exception:
+            self.handleError(record)
+
+    @property
+    def terminator(self) -> str:
+        return "\n"
+
+    def flush(self) -> None:
+        if self._stream and not self._stream.closed:
+            self._stream.flush()
+
+    def close(self) -> None:
+        try:
+            if self._stream and not self._stream.closed:
+                self._stream.close()
+        finally:
+            self._stream = None
+            super().close()
+
+    def _dated_path(self, target_date: date) -> Path:
+        return self.log_dir / f"{self.file_prefix}-{target_date.isoformat()}.log"
+
+    def _ensure_stream(self, force: bool = False) -> None:
+        today = date.today()
+        if not force and self._stream and self._current_date == today:
+            return
+
+        if self._stream and not self._stream.closed:
+            self._stream.close()
+
+        self._current_date = today
+        self._current_path = self._dated_path(today)
+        self._stream = self._current_path.open("a", encoding=self.encoding)
+
+    def _should_rotate(self, incoming_size: int) -> bool:
+        if not self._current_path or self.max_bytes <= 0:
+            return False
+        if not self._current_path.exists():
+            return False
+        return self._current_path.stat().st_size + incoming_size > self.max_bytes
+
+    def _rotate_by_size(self) -> None:
+        if not self._current_path or not self._current_path.exists():
+            return
+
+        if self._stream and not self._stream.closed:
+            self._stream.close()
+            self._stream = None
+
+        stem = self._current_path.stem
+        suffix = self._current_path.suffix
+        index = 1
+        while True:
+            rotated_path = self.log_dir / f"{stem}.{index}{suffix}"
+            if not rotated_path.exists():
+                self._current_path.rename(rotated_path)
+                return
+            index += 1
+
+    def _cleanup_expired_files(self) -> None:
+        if self.retention_days <= 0:
+            return
+
+        cutoff = date.today() - timedelta(days=self.retention_days - 1)
+        pattern = re.compile(
+            rf"^{re.escape(self.file_prefix)}-(\d{{4}}-\d{{2}}-\d{{2}})(?:\.\d+)?\.log$"
+        )
+        for path in self.log_dir.glob(f"{self.file_prefix}-*.log"):
+            match = pattern.match(path.name)
+            if not match:
+                continue
+            file_date = datetime.strptime(match.group(1), "%Y-%m-%d").date()
+            if file_date < cutoff:
+                path.unlink(missing_ok=True)
+
+
+def configure_logging(settings: Settings | None = None) -> None:
+    settings = settings or get_settings()
+
+    root_logger = logging.getLogger()
+    root_logger.handlers.clear()
+    root_logger.setLevel(settings.log_level.upper())
+
+    console_formatter = logging.Formatter(
+        fmt=(
+            "%(asctime)s | %(levelname)s | pid=%(process)d | %(threadName)s | "
+            "request_id=%(request_id)s | %(name)s | %(pathname)s:%(lineno)d | %(message)s"
+        ),
+        datefmt="%Y-%m-%d %H:%M:%S",
+    )
+    json_formatter = JsonLogFormatter()
+    request_filter = RequestIdFilter()
+
+    console_handler = logging.StreamHandler()
+    console_handler.setFormatter(console_formatter)
+    console_handler.addFilter(request_filter)
+
+    file_handler = DateSizeRotatingFileHandler(
+        log_dir=settings.log_dir,
+        file_prefix=settings.log_file_prefix,
+        max_bytes=settings.log_max_bytes,
+        retention_days=settings.log_retention_days,
+    )
+    file_handler.setFormatter(json_formatter)
+    file_handler.addFilter(request_filter)
+
+    error_file_handler = DateSizeRotatingFileHandler(
+        log_dir=settings.log_dir,
+        file_prefix=settings.log_error_file_prefix,
+        max_bytes=settings.log_max_bytes,
+        retention_days=settings.log_retention_days,
+    )
+    error_file_handler.setLevel(logging.ERROR)
+    error_file_handler.setFormatter(json_formatter)
+    error_file_handler.addFilter(request_filter)
+
+    root_logger.addHandler(console_handler)
+    root_logger.addHandler(file_handler)
+    root_logger.addHandler(error_file_handler)
+
+    for logger_name in ("uvicorn", "uvicorn.error", "uvicorn.access"):
+        logger = logging.getLogger(logger_name)
+        logger.handlers.clear()
+        logger.propagate = True
+
+
+def get_logger(name: str) -> logging.Logger:
+    return logging.getLogger(name)
+
+
+def set_request_id(request_id: str) -> None:
+    request_id_var.set(request_id)
+
+
+def setup_request_logging(app: FastAPI) -> None:
+    logger = get_logger("app.access")
+
+    @app.middleware("http")
+    async def request_logging_middleware(request: Request, call_next):  # type: ignore[no-untyped-def]
+        request_id = request.headers.get("X-Request-ID") or str(uuid4())
+        token = request_id_var.set(request_id)
+        started_at = time.perf_counter()
+        try:
+            response = await call_next(request)
+            elapsed_ms = (time.perf_counter() - started_at) * 1000
+            logger.info(
+                "request completed method=%s path=%s status_code=%s duration_ms=%.2f client=%s",
+                request.method,
+                request.url.path,
+                response.status_code,
+                elapsed_ms,
+                request.client.host if request.client else "-",
+            )
+            response.headers["X-Request-ID"] = request_id
+            return response
+        except Exception:
+            elapsed_ms = (time.perf_counter() - started_at) * 1000
+            logger.exception(
+                "request failed method=%s path=%s duration_ms=%.2f client=%s",
+                request.method,
+                request.url.path,
+                elapsed_ms,
+                request.client.host if request.client else "-",
+            )
+            raise
+        finally:
+            request_id_var.reset(token)

backend/app/db/__init__.py

@@ -0,0 +1 @@
+"""Database infrastructure package."""

backend/app/db/session.py

@@ -0,0 +1,40 @@
+from __future__ import annotations
+
+import os
+from collections.abc import Generator
+from contextlib import contextmanager
+
+from sqlalchemy import create_engine
+from sqlalchemy.orm import Session, sessionmaker
+
+
+DATABASE_URL = os.getenv("DATABASE_URL", "postgresql+psycopg://yg_ft:change_me@localhost:15432/yg_ft")
+
+engine = create_engine(
+    DATABASE_URL,
+    pool_pre_ping=True,
+    future=True,
+)
+SessionLocal = sessionmaker(bind=engine, autoflush=False, autocommit=False, expire_on_commit=False, future=True)
+
+
+def get_db() -> Generator[Session, None, None]:
+    db = SessionLocal()
+    try:
+        yield db
+    finally:
+        db.close()
+
+
+@contextmanager
+def session_scope() -> Generator[Session, None, None]:
+    db = SessionLocal()
+    try:
+        yield db
+        db.commit()
+    except Exception:
+        db.rollback()
+        raise
+    finally:
+        db.close()
+

backend/app/db/sql/001_platform_runtime.sql

@@ -0,0 +1,284 @@
+CREATE TABLE IF NOT EXISTS users (
+    id TEXT PRIMARY KEY,
+    username TEXT NOT NULL UNIQUE,
+    password_hash TEXT NOT NULL,
+    display_name TEXT NOT NULL,
+    role TEXT NOT NULL,
+    status TEXT NOT NULL,
+    permissions TEXT NOT NULL,
+    create_time TEXT NOT NULL,
+    last_login TEXT,
+    protected INTEGER NOT NULL DEFAULT 0
+);
+
+CREATE TABLE IF NOT EXISTS models (
+    id TEXT PRIMARY KEY,
+    name TEXT NOT NULL UNIQUE,
+    type TEXT NOT NULL,
+    purpose TEXT NOT NULL,
+    model_source TEXT NOT NULL,
+    description TEXT,
+    path TEXT,
+    api_url TEXT,
+    api_key TEXT,
+    online_model_name TEXT,
+    create_time TEXT NOT NULL
+);
+
+CREATE TABLE IF NOT EXISTS trained_models (
+    id TEXT PRIMARY KEY,
+    name TEXT NOT NULL UNIQUE,
+    train_methods TEXT NOT NULL,
+    base_model_path TEXT,
+    create_time TEXT NOT NULL,
+    merged INTEGER NOT NULL DEFAULT 0,
+    merging INTEGER NOT NULL DEFAULT 0,
+    merged_path TEXT
+);
+
+CREATE TABLE IF NOT EXISTS model_lineage (
+    id TEXT PRIMARY KEY,
+    child_resource_type TEXT NOT NULL,
+    child_resource_id TEXT NOT NULL,
+    parent_resource_type TEXT NOT NULL,
+    parent_resource_id TEXT NOT NULL,
+    relation_type TEXT NOT NULL,
+    compute_job_id TEXT,
+    payload TEXT NOT NULL,
+    create_time TEXT NOT NULL
+);
+
+CREATE TABLE IF NOT EXISTS model_artifacts (
+    id TEXT PRIMARY KEY,
+    model_id TEXT NOT NULL,
+    model_kind TEXT NOT NULL,
+    artifact_type TEXT NOT NULL,
+    path TEXT NOT NULL,
+    size_bytes BIGINT NOT NULL DEFAULT 0,
+    checksum_sha256 TEXT,
+    metadata TEXT NOT NULL,
+    compute_job_id TEXT,
+    create_time TEXT NOT NULL
+);
+
+CREATE TABLE IF NOT EXISTS model_export_jobs (
+    id TEXT PRIMARY KEY,
+    trained_model_id TEXT,
+    compute_job_id TEXT NOT NULL,
+    node_id TEXT,
+    export_type TEXT NOT NULL,
+    quantization_bit INTEGER NOT NULL DEFAULT 0,
+    status TEXT NOT NULL,
+    output_dir TEXT,
+    payload TEXT NOT NULL,
+    create_time TEXT NOT NULL,
+    completed_at TEXT
+);
+
+CREATE TABLE IF NOT EXISTS datasets (
+    id TEXT PRIMARY KEY,
+    name TEXT NOT NULL UNIQUE,
+    type TEXT NOT NULL,
+    storage_type TEXT NOT NULL,
+    source TEXT NOT NULL,
+    task_id TEXT,
+    size TEXT,
+    count INTEGER NOT NULL DEFAULT 0,
+    description TEXT,
+    create_time TEXT NOT NULL
+);
+
+CREATE TABLE IF NOT EXISTS dataset_files (
+    id TEXT PRIMARY KEY,
+    dataset_id TEXT NOT NULL REFERENCES datasets(id) ON DELETE CASCADE,
+    name TEXT NOT NULL,
+    size TEXT,
+    content TEXT NOT NULL,
+    active_version_id TEXT NOT NULL,
+    versions TEXT NOT NULL,
+    create_time TEXT NOT NULL
+);
+
+CREATE TABLE IF NOT EXISTS compute_nodes (
+    id TEXT PRIMARY KEY,
+    code TEXT NOT NULL UNIQUE,
+    name TEXT NOT NULL,
+    api_base_url TEXT NOT NULL,
+    file_gateway_url TEXT NOT NULL,
+    enabled INTEGER NOT NULL DEFAULT 1,
+    scheduler_status TEXT NOT NULL,
+    scheduler_weight INTEGER NOT NULL DEFAULT 100,
+    tags TEXT NOT NULL,
+    gpu_count INTEGER NOT NULL DEFAULT 0,
+    current_running_jobs INTEGER NOT NULL DEFAULT 0,
+    max_parallel_jobs INTEGER NOT NULL DEFAULT 2,
+    data_root TEXT NOT NULL,
+    model_root TEXT NOT NULL,
+    log_root TEXT NOT NULL,
+    api_version TEXT NOT NULL DEFAULT 'v1',
+    capabilities TEXT NOT NULL DEFAULT '[]',
+    description TEXT,
+    last_health_check_at TEXT,
+    health_detail TEXT NOT NULL
+);
+
+CREATE TABLE IF NOT EXISTS gpus (
+    id TEXT PRIMARY KEY,
+    node_id TEXT NOT NULL REFERENCES compute_nodes(id) ON DELETE CASCADE,
+    gpu_index INTEGER NOT NULL,
+    uuid TEXT NOT NULL,
+    name TEXT NOT NULL,
+    memory_total_gb DOUBLE PRECISION NOT NULL,
+    power_limit_w DOUBLE PRECISION NOT NULL,
+    base_temperature INTEGER NOT NULL,
+    last_seen_at TEXT
+);
+
+CREATE TABLE IF NOT EXISTS fine_tune_tasks (
+    id TEXT PRIMARY KEY,
+    name TEXT NOT NULL UNIQUE,
+    payload TEXT NOT NULL,
+    status TEXT NOT NULL,
+    progress INTEGER NOT NULL DEFAULT 0,
+    process_id INTEGER,
+    create_time TEXT NOT NULL,
+    start_time TEXT,
+    completed_at TEXT,
+    compute_node_id TEXT REFERENCES compute_nodes(id) ON DELETE SET NULL,
+    gpus TEXT NOT NULL,
+    sync_job_id TEXT,
+    compute_job_id TEXT
+);
+
+CREATE TABLE IF NOT EXISTS fine_tune_metrics (
+    id TEXT PRIMARY KEY,
+    task_id TEXT NOT NULL REFERENCES fine_tune_tasks(id) ON DELETE CASCADE,
+    step INTEGER NOT NULL,
+    epoch DOUBLE PRECISION,
+    loss DOUBLE PRECISION,
+    grad_norm DOUBLE PRECISION,
+    learning_rate DOUBLE PRECISION,
+    raw TEXT NOT NULL,
+    create_time TEXT NOT NULL
+);
+
+CREATE TABLE IF NOT EXISTS fine_tune_checkpoints (
+    id TEXT PRIMARY KEY,
+    task_id TEXT NOT NULL REFERENCES fine_tune_tasks(id) ON DELETE CASCADE,
+    step INTEGER NOT NULL,
+    name TEXT NOT NULL,
+    path TEXT NOT NULL,
+    size_bytes BIGINT NOT NULL DEFAULT 0,
+    create_time TEXT NOT NULL
+);
+
+CREATE TABLE IF NOT EXISTS compute_jobs (
+    id TEXT PRIMARY KEY,
+    task_id TEXT REFERENCES fine_tune_tasks(id) ON DELETE SET NULL,
+    node_id TEXT REFERENCES compute_nodes(id) ON DELETE SET NULL,
+    engine TEXT NOT NULL,
+    status TEXT NOT NULL,
+    command TEXT NOT NULL,
+    output_dir TEXT,
+    log_file TEXT,
+    payload TEXT NOT NULL,
+    create_time TEXT NOT NULL,
+    update_time TEXT NOT NULL,
+    completed_at TEXT
+);
+
+CREATE TABLE IF NOT EXISTS gpu_allocations (
+    id TEXT PRIMARY KEY,
+    task_id TEXT REFERENCES fine_tune_tasks(id) ON DELETE CASCADE,
+    compute_job_id TEXT,
+    node_id TEXT REFERENCES compute_nodes(id) ON DELETE CASCADE,
+    gpu_index INTEGER NOT NULL,
+    status TEXT NOT NULL,
+    create_time TEXT NOT NULL,
+    released_at TEXT
+);
+
+CREATE TABLE IF NOT EXISTS scheduler_locks (
+    lock_key TEXT PRIMARY KEY,
+    owner TEXT NOT NULL,
+    expires_at TEXT NOT NULL,
+    create_time TEXT NOT NULL,
+    update_time TEXT NOT NULL
+);
+
+CREATE TABLE IF NOT EXISTS resource_replicas (
+    id TEXT PRIMARY KEY,
+    node_id TEXT NOT NULL REFERENCES compute_nodes(id) ON DELETE CASCADE,
+    resource_type TEXT NOT NULL,
+    resource_id TEXT NOT NULL,
+    local_path TEXT NOT NULL,
+    status TEXT NOT NULL,
+    sync_status TEXT NOT NULL,
+    checksum_sha256 TEXT,
+    byte_size BIGINT NOT NULL DEFAULT 0,
+    last_checked_at TEXT,
+    last_error TEXT,
+    create_time TEXT NOT NULL
+);
+
+CREATE TABLE IF NOT EXISTS resource_sync_jobs (
+    id TEXT PRIMARY KEY,
+    target_node_id TEXT NOT NULL,
+    resources TEXT NOT NULL,
+    status TEXT NOT NULL,
+    progress INTEGER NOT NULL DEFAULT 0,
+    create_time TEXT NOT NULL,
+    completed_at TEXT
+);
+
+CREATE TABLE IF NOT EXISTS eval_tasks (
+    id TEXT PRIMARY KEY,
+    name TEXT NOT NULL,
+    payload TEXT NOT NULL,
+    status TEXT NOT NULL,
+    create_time TEXT NOT NULL
+);
+
+CREATE TABLE IF NOT EXISTS eval_dimensions (
+    id TEXT PRIMARY KEY,
+    name TEXT NOT NULL,
+    payload TEXT NOT NULL,
+    is_active INTEGER NOT NULL DEFAULT 1,
+    is_default INTEGER NOT NULL DEFAULT 0,
+    create_time TEXT NOT NULL
+);
+
+CREATE TABLE IF NOT EXISTS compare_tasks (
+    id TEXT PRIMARY KEY,
+    name TEXT NOT NULL,
+    payload TEXT NOT NULL,
+    status TEXT NOT NULL,
+    create_time TEXT NOT NULL
+);
+
+CREATE INDEX IF NOT EXISTS idx_fine_tune_status ON fine_tune_tasks(status);
+CREATE INDEX IF NOT EXISTS idx_fine_tune_compute_job ON fine_tune_tasks(compute_job_id);
+CREATE INDEX IF NOT EXISTS idx_fine_tune_compute_node_status ON fine_tune_tasks(compute_node_id, status);
+CREATE INDEX IF NOT EXISTS idx_model_lineage_child ON model_lineage(child_resource_type, child_resource_id);
+CREATE INDEX IF NOT EXISTS idx_model_lineage_parent ON model_lineage(parent_resource_type, parent_resource_id);
+CREATE INDEX IF NOT EXISTS idx_model_artifacts_model ON model_artifacts(model_kind, model_id, artifact_type);
+CREATE INDEX IF NOT EXISTS idx_model_export_jobs_model ON model_export_jobs(trained_model_id, create_time DESC);
+CREATE INDEX IF NOT EXISTS idx_model_export_jobs_compute ON model_export_jobs(compute_job_id);
+CREATE INDEX IF NOT EXISTS idx_fine_tune_metrics_task_step ON fine_tune_metrics(task_id, step);
+CREATE UNIQUE INDEX IF NOT EXISTS uq_fine_tune_metrics_task_step_epoch ON fine_tune_metrics(task_id, step, epoch);
+CREATE INDEX IF NOT EXISTS idx_fine_tune_checkpoints_task_step ON fine_tune_checkpoints(task_id, step);
+CREATE UNIQUE INDEX IF NOT EXISTS uq_fine_tune_checkpoints_task_path ON fine_tune_checkpoints(task_id, path);
+CREATE INDEX IF NOT EXISTS idx_compute_jobs_task ON compute_jobs(task_id);
+CREATE INDEX IF NOT EXISTS idx_compute_jobs_node_status ON compute_jobs(node_id, status);
+CREATE INDEX IF NOT EXISTS idx_gpu_allocations_node_status ON gpu_allocations(node_id, status);
+CREATE UNIQUE INDEX IF NOT EXISTS uq_gpu_allocations_active ON gpu_allocations(node_id, gpu_index) WHERE status IN ('allocated','running');
+CREATE INDEX IF NOT EXISTS idx_scheduler_locks_expires ON scheduler_locks(expires_at);
+CREATE INDEX IF NOT EXISTS idx_dataset_files_dataset ON dataset_files(dataset_id);
+CREATE INDEX IF NOT EXISTS idx_gpus_node ON gpus(node_id);
+CREATE UNIQUE INDEX IF NOT EXISTS uq_gpus_node_index ON gpus(node_id, gpu_index);
+CREATE INDEX IF NOT EXISTS idx_replicas_resource ON resource_replicas(resource_type, resource_id);
+CREATE UNIQUE INDEX IF NOT EXISTS uq_replicas_node_resource ON resource_replicas(node_id, resource_type, resource_id);
+CREATE INDEX IF NOT EXISTS idx_sync_jobs_node_status ON resource_sync_jobs(target_node_id, status);
+CREATE INDEX IF NOT EXISTS idx_eval_tasks_status ON eval_tasks(status);
+CREATE INDEX IF NOT EXISTS idx_eval_dimensions_active ON eval_dimensions(is_active);
+CREATE INDEX IF NOT EXISTS idx_compare_tasks_status ON compare_tasks(status);

backend/app/db/sql/002_data_process.sql

@@ -0,0 +1,235 @@
+-- Data processing migration.
+--
+-- IMPORTANT: This file is intentionally NOT wired into application startup.
+-- Apply it explicitly in a controlled deployment, or call
+-- DataProcessStore.ensure_schema() from an administrative command.
+
+BEGIN;
+
+-- This migration targets the current runtime schema created by
+-- 001_platform_runtime.sql. Refuse the UUID/JSONB target-design schema instead
+-- of partially altering it with incompatible TEXT foreign keys.
+DO $$
+DECLARE
+    datasets_id_type TEXT;
+BEGIN
+    SELECT format_type(a.atttypid, a.atttypmod)
+      INTO datasets_id_type
+      FROM pg_attribute a
+      JOIN pg_class c ON c.oid = a.attrelid
+      JOIN pg_namespace n ON n.oid = c.relnamespace
+     WHERE n.nspname = current_schema()
+       AND c.relname = 'datasets'
+       AND a.attname = 'id'
+       AND a.attnum > 0
+       AND NOT a.attisdropped;
+    IF datasets_id_type IS NULL THEN
+        RAISE EXCEPTION '002_data_process.sql requires 001_platform_runtime.sql first';
+    END IF;
+    IF datasets_id_type <> 'text' THEN
+        RAISE EXCEPTION
+          '002_data_process.sql supports only the current TEXT runtime schema; found datasets.id type %',
+          datasets_id_type;
+    END IF;
+END $$;
+
+ALTER TABLE datasets ADD COLUMN IF NOT EXISTS source_task_id TEXT;
+ALTER TABLE datasets ADD COLUMN IF NOT EXISTS size_bytes BIGINT NOT NULL DEFAULT 0;
+ALTER TABLE datasets ADD COLUMN IF NOT EXISTS record_count BIGINT NOT NULL DEFAULT 0;
+ALTER TABLE datasets ADD COLUMN IF NOT EXISTS metadata TEXT NOT NULL DEFAULT '{}';
+ALTER TABLE datasets ADD COLUMN IF NOT EXISTS tenant_id TEXT;
+ALTER TABLE datasets ADD COLUMN IF NOT EXISTS project_id TEXT;
+ALTER TABLE datasets ADD COLUMN IF NOT EXISTS owner_id TEXT;
+ALTER TABLE datasets ADD COLUMN IF NOT EXISTS created_by TEXT;
+ALTER TABLE datasets ADD COLUMN IF NOT EXISTS created_at TIMESTAMPTZ NOT NULL DEFAULT now();
+ALTER TABLE datasets ADD COLUMN IF NOT EXISTS updated_at TIMESTAMPTZ NOT NULL DEFAULT now();
+ALTER TABLE datasets ADD COLUMN IF NOT EXISTS deleted_at TIMESTAMPTZ;
+
+ALTER TABLE dataset_files ADD COLUMN IF NOT EXISTS storage_object_id TEXT;
+ALTER TABLE dataset_files ADD COLUMN IF NOT EXISTS current_version_id TEXT;
+ALTER TABLE dataset_files ADD COLUMN IF NOT EXISTS size_bytes BIGINT NOT NULL DEFAULT 0;
+ALTER TABLE dataset_files ADD COLUMN IF NOT EXISTS record_count BIGINT NOT NULL DEFAULT 0;
+ALTER TABLE dataset_files ADD COLUMN IF NOT EXISTS file_format VARCHAR(40);
+ALTER TABLE dataset_files ADD COLUMN IF NOT EXISTS checksum_sha256 CHAR(64);
+ALTER TABLE dataset_files ADD COLUMN IF NOT EXISTS version_no INTEGER NOT NULL DEFAULT 1;
+ALTER TABLE dataset_files ADD COLUMN IF NOT EXISTS source_task_id TEXT;
+ALTER TABLE dataset_files ADD COLUMN IF NOT EXISTS tenant_id TEXT;
+ALTER TABLE dataset_files ADD COLUMN IF NOT EXISTS project_id TEXT;
+ALTER TABLE dataset_files ADD COLUMN IF NOT EXISTS created_by TEXT;
+ALTER TABLE dataset_files ADD COLUMN IF NOT EXISTS metadata TEXT NOT NULL DEFAULT '{}';
+ALTER TABLE dataset_files ADD COLUMN IF NOT EXISTS created_at TIMESTAMPTZ NOT NULL DEFAULT now();
+ALTER TABLE dataset_files ADD COLUMN IF NOT EXISTS updated_at TIMESTAMPTZ NOT NULL DEFAULT now();
+ALTER TABLE dataset_files ADD COLUMN IF NOT EXISTS deleted_at TIMESTAMPTZ;
+
+CREATE TABLE IF NOT EXISTS data_process_tasks (
+    id TEXT PRIMARY KEY,
+    name VARCHAR(150) NOT NULL,
+    description TEXT,
+    status VARCHAR(20) NOT NULL DEFAULT 'pending'
+        CHECK (status IN ('pending', 'running', 'completed', 'failed', 'stopped')),
+    process_type VARCHAR(20) NOT NULL
+        CHECK (process_type IN ('structured', 'unstructured', 'external')),
+    source_dataset_id TEXT REFERENCES datasets(id) ON DELETE SET NULL,
+    output_dataset_id TEXT REFERENCES datasets(id) ON DELETE SET NULL,
+    config TEXT NOT NULL DEFAULT '{}',
+    progress NUMERIC(5,2) NOT NULL DEFAULT 0 CHECK (progress >= 0 AND progress <= 100),
+    input_count BIGINT NOT NULL DEFAULT 0 CHECK (input_count >= 0),
+    output_count BIGINT NOT NULL DEFAULT 0 CHECK (output_count >= 0),
+    filtered_count BIGINT NOT NULL DEFAULT 0 CHECK (filtered_count >= 0),
+    duplicate_count BIGINT NOT NULL DEFAULT 0 CHECK (duplicate_count >= 0),
+    error_count BIGINT NOT NULL DEFAULT 0 CHECK (error_count >= 0),
+    failure_reason TEXT,
+    generation_run_id TEXT,
+    tenant_id TEXT,
+    project_id TEXT,
+    owner_id TEXT,
+    approval_status VARCHAR(30) NOT NULL DEFAULT 'not_required',
+    created_by TEXT,
+    updated_by TEXT,
+    deleted_by TEXT,
+    started_at TIMESTAMPTZ,
+    completed_at TIMESTAMPTZ,
+    created_at TIMESTAMPTZ NOT NULL DEFAULT now(),
+    updated_at TIMESTAMPTZ NOT NULL DEFAULT now(),
+    deleted_at TIMESTAMPTZ
+);
+
+ALTER TABLE data_process_tasks ADD COLUMN IF NOT EXISTS generation_run_id TEXT;
+
+CREATE UNIQUE INDEX IF NOT EXISTS uq_data_process_tasks_name_alive
+    ON data_process_tasks(name) WHERE deleted_at IS NULL;
+CREATE INDEX IF NOT EXISTS idx_data_process_tasks_scope_status
+    ON data_process_tasks(tenant_id, project_id, status, created_at DESC)
+    WHERE deleted_at IS NULL;
+CREATE INDEX IF NOT EXISTS idx_data_process_tasks_creator_created
+    ON data_process_tasks(created_by, created_at DESC) WHERE deleted_at IS NULL;
+
+CREATE TABLE IF NOT EXISTS data_process_source_files (
+    id TEXT PRIMARY KEY,
+    task_id TEXT NOT NULL REFERENCES data_process_tasks(id) ON DELETE CASCADE,
+    storage_object_id TEXT,
+    name TEXT NOT NULL,
+    size_bytes BIGINT NOT NULL DEFAULT 0 CHECK (size_bytes >= 0),
+    record_count BIGINT NOT NULL DEFAULT 0 CHECK (record_count >= 0),
+    file_format VARCHAR(40),
+    checksum_sha256 CHAR(64) NOT NULL,
+    version_no INTEGER NOT NULL DEFAULT 1 CHECK (version_no > 0),
+    content TEXT NOT NULL,
+    content_preview TEXT,
+    metadata TEXT NOT NULL DEFAULT '{}',
+    tenant_id TEXT,
+    project_id TEXT,
+    created_by TEXT,
+    created_at TIMESTAMPTZ NOT NULL DEFAULT now(),
+    updated_at TIMESTAMPTZ NOT NULL DEFAULT now(),
+    deleted_at TIMESTAMPTZ
+);
+
+CREATE INDEX IF NOT EXISTS idx_data_process_source_files_task
+    ON data_process_source_files(task_id, created_at) WHERE deleted_at IS NULL;
+CREATE UNIQUE INDEX IF NOT EXISTS uq_data_process_source_checksum_alive
+    ON data_process_source_files(task_id, checksum_sha256) WHERE deleted_at IS NULL;
+
+CREATE TABLE IF NOT EXISTS data_process_preview_items (
+    id TEXT PRIMARY KEY,
+    task_id TEXT NOT NULL REFERENCES data_process_tasks(id) ON DELETE CASCADE,
+    source_file_id TEXT REFERENCES data_process_source_files(id) ON DELETE CASCADE,
+    original_content TEXT NOT NULL DEFAULT '',
+    edited_content TEXT NOT NULL DEFAULT '',
+    source_start INTEGER CHECK (source_start IS NULL OR source_start >= 0),
+    source_end INTEGER CHECK (source_end IS NULL OR source_end >= 0),
+    source_start_line INTEGER CHECK (source_start_line IS NULL OR source_start_line > 0),
+    source_end_line INTEGER CHECK (source_end_line IS NULL OR source_end_line > 0),
+    token_count INTEGER NOT NULL DEFAULT 0 CHECK (token_count >= 0),
+    status VARCHAR(20) NOT NULL DEFAULT 'original'
+        CHECK (status IN ('original', 'modified', 'manual', 'invalid')),
+    quality_score TEXT NOT NULL DEFAULT '{}',
+    created_at TIMESTAMPTZ NOT NULL DEFAULT now(),
+    updated_at TIMESTAMPTZ NOT NULL DEFAULT now(),
+    CHECK (source_start IS NULL OR source_end IS NULL OR source_end >= source_start),
+    CHECK (source_start_line IS NULL OR source_end_line IS NULL OR source_end_line >= source_start_line)
+);
+
+CREATE INDEX IF NOT EXISTS idx_data_process_preview_task_file
+    ON data_process_preview_items(task_id, source_file_id, created_at);
+
+CREATE TABLE IF NOT EXISTS data_process_results (
+    id TEXT PRIMARY KEY,
+    task_id TEXT NOT NULL REFERENCES data_process_tasks(id) ON DELETE CASCADE,
+    preview_item_id TEXT REFERENCES data_process_preview_items(id) ON DELETE SET NULL,
+    instruction TEXT NOT NULL,
+    input TEXT NOT NULL DEFAULT '',
+    output TEXT NOT NULL,
+    original_instruction TEXT,
+    original_input TEXT,
+    original_output TEXT,
+    status VARCHAR(20) NOT NULL DEFAULT 'valid'
+        CHECK (status IN ('valid', 'modified', 'invalid')),
+    error TEXT,
+    split VARCHAR(20) CHECK (split IS NULL OR split IN ('train', 'validation', 'test')),
+    quality_score TEXT NOT NULL DEFAULT '{}',
+    created_at TIMESTAMPTZ NOT NULL DEFAULT now(),
+    updated_at TIMESTAMPTZ NOT NULL DEFAULT now()
+);
+
+CREATE INDEX IF NOT EXISTS idx_data_process_results_task_status
+    ON data_process_results(task_id, status, id);
+CREATE INDEX IF NOT EXISTS idx_data_process_results_task_split
+    ON data_process_results(task_id, split);
+
+CREATE TABLE IF NOT EXISTS dataset_file_versions (
+    id TEXT PRIMARY KEY,
+    dataset_file_id TEXT NOT NULL REFERENCES dataset_files(id) ON DELETE CASCADE,
+    version_no INTEGER NOT NULL CHECK (version_no > 0),
+    storage_object_id TEXT NOT NULL,
+    content_preview TEXT,
+    description TEXT,
+    base_version_id TEXT REFERENCES dataset_file_versions(id) ON DELETE SET NULL,
+    size_bytes BIGINT NOT NULL DEFAULT 0 CHECK (size_bytes >= 0),
+    record_count BIGINT NOT NULL DEFAULT 0 CHECK (record_count >= 0),
+    checksum_sha256 CHAR(64) NOT NULL,
+    source_task_id TEXT REFERENCES data_process_tasks(id) ON DELETE SET NULL,
+    metadata TEXT NOT NULL DEFAULT '{}',
+    created_by TEXT,
+    created_at TIMESTAMPTZ NOT NULL DEFAULT now()
+);
+
+ALTER TABLE dataset_file_versions ADD COLUMN IF NOT EXISTS source_task_id TEXT;
+ALTER TABLE dataset_file_versions ADD COLUMN IF NOT EXISTS metadata TEXT NOT NULL DEFAULT '{}';
+CREATE UNIQUE INDEX IF NOT EXISTS uq_dataset_file_versions_no_002
+    ON dataset_file_versions(dataset_file_id, version_no);
+CREATE INDEX IF NOT EXISTS idx_dataset_file_versions_source_task_002
+    ON dataset_file_versions(source_task_id) WHERE source_task_id IS NOT NULL;
+
+CREATE TABLE IF NOT EXISTS dataset_records (
+    id TEXT PRIMARY KEY,
+    dataset_id TEXT NOT NULL REFERENCES datasets(id) ON DELETE CASCADE,
+    dataset_file_id TEXT REFERENCES dataset_files(id) ON DELETE CASCADE,
+    version_id TEXT REFERENCES dataset_file_versions(id) ON DELETE CASCADE,
+    line_no INTEGER,
+    split VARCHAR(20) CHECK (split IS NULL OR split IN ('train', 'validation', 'test')),
+    instruction TEXT,
+    input TEXT,
+    output TEXT,
+    raw TEXT NOT NULL DEFAULT '{}',
+    status VARCHAR(20) NOT NULL DEFAULT 'valid'
+        CHECK (status IN ('valid', 'modified', 'invalid')),
+    source_task_id TEXT REFERENCES data_process_tasks(id) ON DELETE SET NULL,
+    source_result_id TEXT REFERENCES data_process_results(id) ON DELETE SET NULL,
+    preview_item_id TEXT REFERENCES data_process_preview_items(id) ON DELETE SET NULL,
+    created_at TIMESTAMPTZ NOT NULL DEFAULT now()
+);
+
+ALTER TABLE dataset_records ADD COLUMN IF NOT EXISTS source_task_id TEXT;
+ALTER TABLE dataset_records ADD COLUMN IF NOT EXISTS source_result_id TEXT;
+ALTER TABLE dataset_records ADD COLUMN IF NOT EXISTS preview_item_id TEXT;
+CREATE INDEX IF NOT EXISTS idx_dataset_records_dataset_002
+    ON dataset_records(dataset_id, id);
+CREATE INDEX IF NOT EXISTS idx_dataset_records_source_task_002
+    ON dataset_records(source_task_id, source_result_id);
+CREATE INDEX IF NOT EXISTS idx_datasets_source_task_002
+    ON datasets(source_task_id) WHERE source_task_id IS NOT NULL;
+CREATE INDEX IF NOT EXISTS idx_dataset_files_source_task_002
+    ON dataset_files(source_task_id) WHERE source_task_id IS NOT NULL;
+
+COMMIT;

backend/app/main.py

@@ -0,0 +1,43 @@
+import asyncio
+from contextlib import suppress
+
+from fastapi import FastAPI
+from fastapi.middleware.cors import CORSMiddleware
+
+from app.api.v1.router import api_router
+from app.core.config import get_settings
+from app.core.logging import configure_logging, setup_request_logging
+from app.workers.compute_poller import run_compute_poller
+
+
+def create_app() -> FastAPI:
+    settings = get_settings()
+    configure_logging(settings)
+
+    app = FastAPI(title=settings.app_name)
+    app.add_middleware(
+        CORSMiddleware,
+        allow_origins=settings.cors_allow_origins,
+        allow_credentials=True,
+        allow_methods=["*"],
+        allow_headers=["*"],
+    )
+    setup_request_logging(app)
+    app.include_router(api_router, prefix=settings.route_prefix)
+
+    @app.on_event("startup")
+    async def start_workers() -> None:
+        app.state.compute_poller_task = asyncio.create_task(run_compute_poller())
+
+    @app.on_event("shutdown")
+    async def stop_workers() -> None:
+        task = getattr(app.state, "compute_poller_task", None)
+        if task:
+            task.cancel()
+            with suppress(asyncio.CancelledError):
+                await task
+
+    return app
+
+
+app = create_app()

backend/app/modules/README.md

@@ -0,0 +1,15 @@
+# Backend Module Convention
+
+每个业务模块建议保持一致结构：
+
+```text
+module_name/
+  __init__.py
+  router.py       # FastAPI router
+  schemas.py      # Pydantic request/response models
+  service.py      # Business orchestration
+  repository.py   # Database access
+  permissions.py  # Optional resource permission checks
+```
+
+模块边界以 `docs/system-development-plan.md` 的页面模块开发工作包为准。

backend/app/modules/approval/__init__.py

@@ -0,0 +1 @@
+"""Approval workflow module."""

backend/app/modules/audit/__init__.py

@@ -0,0 +1 @@
+"""Audit log module."""

backend/app/modules/auth/__init__.py

@@ -0,0 +1 @@
+"""Authentication and user session module."""

backend/app/modules/compute_gateway/__init__.py

@@ -0,0 +1 @@
+"""Application-side compute platform gateway module."""

backend/app/modules/compute_gateway/client.py

@@ -0,0 +1,206 @@
+from __future__ import annotations
+
+import time
+from typing import Any
+from urllib.parse import urljoin
+
+import httpx
+
+from app.core.config import get_settings
+
+
+def _join_url(base_url: str, path: str) -> str:
+    return urljoin(base_url.rstrip("/") + "/", path.lstrip("/"))
+
+
+def _unwrap_items(payload: Any) -> list[dict[str, Any]]:
+    if isinstance(payload, list):
+        return [item for item in payload if isinstance(item, dict)]
+    if isinstance(payload, dict):
+        data = payload.get("data")
+        if isinstance(data, dict) and isinstance(data.get("items"), list):
+            return [item for item in data["items"] if isinstance(item, dict)]
+        if isinstance(payload.get("items"), list):
+            return [item for item in payload["items"] if isinstance(item, dict)]
+        if isinstance(data, list):
+            return [item for item in data if isinstance(item, dict)]
+    return []
+
+
+def _unwrap_dict(payload: Any) -> dict[str, Any]:
+    if isinstance(payload, dict) and isinstance(payload.get("data"), dict):
+        return payload["data"]
+    return payload if isinstance(payload, dict) else {}
+
+
+class ComputeNodeClient:
+    """Application-side client for one compute node.
+
+    The client accepts both current YG Compute API responses and common
+    wrapper shapes such as `{code,message,data}` to make future engine/node
+    adapters less brittle.
+    """
+
+    def __init__(self, api_base_url: str, token: str | None = None, timeout: float | None = None) -> None:
+        settings = get_settings()
+        self.api_base_url = api_base_url.rstrip("/")
+        self.token = token or settings.compute_service_token
+        self.timeout = timeout or settings.compute_request_timeout_seconds
+        self.route_prefix = settings.route_prefix.rstrip("/") or "/modelTF"
+
+    def headers(self) -> dict[str, str]:
+        if not self.token:
+            return {}
+        return {"X-Compute-Token": self.token}
+
+    async def test_connection(self) -> dict[str, Any]:
+        started = time.perf_counter()
+        health = await self.health()
+        gpus = await self.gpus()
+        return {
+            "success": True,
+            "latency_ms": int((time.perf_counter() - started) * 1000),
+            "health": health,
+            "gpus": gpus,
+        }
+
+    async def health(self) -> dict[str, Any]:
+        paths = [f"{self.route_prefix}/v1/compute/health", f"{self.route_prefix}/health", "/health"]
+        last_error = ""
+        async with httpx.AsyncClient(timeout=self.timeout, headers=self.headers()) as client:
+            for path in paths:
+                try:
+                    response = await client.get(_join_url(self.api_base_url, path))
+                    response.raise_for_status()
+                    return _unwrap_dict(response.json())
+                except Exception as exc:  # noqa: BLE001 - keep endpoint compatibility fallback broad
+                    last_error = str(exc)
+        raise RuntimeError(last_error or "compute health check failed")
+
+    async def gpus(self) -> list[dict[str, Any]]:
+        paths = [
+            f"{self.route_prefix}/compute/resources/gpus",
+            f"{self.route_prefix}/v1/compute/resources/gpus",
+            "/compute/resources/gpus",
+        ]
+        last_error = ""
+        async with httpx.AsyncClient(timeout=self.timeout, headers=self.headers()) as client:
+            for path in paths:
+                try:
+                    response = await client.get(_join_url(self.api_base_url, path))
+                    response.raise_for_status()
+                    return _unwrap_items(response.json())
+                except Exception as exc:  # noqa: BLE001
+                    last_error = str(exc)
+        raise RuntimeError(last_error or "compute gpu discovery failed")
+
+    async def create_job(self, payload: dict[str, Any]) -> dict[str, Any]:
+        async with httpx.AsyncClient(timeout=self.timeout, headers=self.headers()) as client:
+            response = await client.post(_join_url(self.api_base_url, f"{self.route_prefix}/compute/jobs"), json=payload)
+            response.raise_for_status()
+            return _unwrap_dict(response.json())
+
+    async def preview_job(self, payload: dict[str, Any]) -> dict[str, Any]:
+        async with httpx.AsyncClient(timeout=self.timeout, headers=self.headers()) as client:
+            response = await client.post(
+                _join_url(self.api_base_url, f"{self.route_prefix}/compute/jobs/preview"),
+                json=payload,
+            )
+            response.raise_for_status()
+            return _unwrap_dict(response.json())
+
+    async def validate_job(self, payload: dict[str, Any]) -> dict[str, Any]:
+        async with httpx.AsyncClient(timeout=self.timeout, headers=self.headers()) as client:
+            response = await client.post(
+                _join_url(self.api_base_url, f"{self.route_prefix}/compute/jobs/validate"),
+                json=payload,
+            )
+            response.raise_for_status()
+            return _unwrap_dict(response.json())
+
+    async def check_paths(self, paths: list[dict[str, Any]]) -> dict[str, Any]:
+        async with httpx.AsyncClient(timeout=self.timeout, headers=self.headers()) as client:
+            response = await client.post(
+                _join_url(self.api_base_url, f"{self.route_prefix}/compute/files/check-paths"),
+                json={"paths": paths},
+            )
+            response.raise_for_status()
+            return _unwrap_dict(response.json())
+
+    async def list_files(
+        self,
+        root: str = "data",
+        relative_path: str = "",
+        directories_only: bool = False,
+    ) -> dict[str, Any]:
+        async with httpx.AsyncClient(timeout=self.timeout, headers=self.headers()) as client:
+            response = await client.get(
+                _join_url(self.api_base_url, f"{self.route_prefix}/compute/files/list"),
+                params={"root": root, "relative_path": relative_path, "directories_only": directories_only},
+            )
+            response.raise_for_status()
+            return _unwrap_dict(response.json())
+
+    async def get_job(self, job_id: str) -> dict[str, Any]:
+        async with httpx.AsyncClient(timeout=self.timeout, headers=self.headers()) as client:
+            response = await client.get(_join_url(self.api_base_url, f"{self.route_prefix}/compute/jobs/{job_id}"))
+            response.raise_for_status()
+            return _unwrap_dict(response.json())
+
+    async def stop_job(self, job_id: str) -> dict[str, Any]:
+        async with httpx.AsyncClient(timeout=self.timeout, headers=self.headers()) as client:
+            response = await client.post(_join_url(self.api_base_url, f"{self.route_prefix}/compute/jobs/{job_id}/stop"))
+            response.raise_for_status()
+            return _unwrap_dict(response.json())
+
+    async def job_logs(
+        self,
+        job_id: str,
+        tail_lines: int | None = None,
+        offset: int | None = None,
+        limit: int | None = None,
+    ) -> dict[str, Any]:
+        params = {
+            key: value
+            for key, value in {"tail_lines": tail_lines, "offset": offset, "limit": limit}.items()
+            if value is not None
+        }
+        async with httpx.AsyncClient(timeout=self.timeout, headers=self.headers()) as client:
+            response = await client.get(
+                _join_url(self.api_base_url, f"{self.route_prefix}/compute/jobs/{job_id}/logs"),
+                params=params,
+            )
+            response.raise_for_status()
+            return _unwrap_dict(response.json())
+
+    async def import_local_file(self, payload: dict[str, Any]) -> dict[str, Any]:
+        async with httpx.AsyncClient(timeout=self.timeout, headers=self.headers()) as client:
+            response = await client.post(
+                _join_url(self.api_base_url, f"{self.route_prefix}/compute/files/import-local"),
+                json=payload,
+            )
+            response.raise_for_status()
+            return _unwrap_dict(response.json())
+
+    async def upload_file(
+        self,
+        filename: str,
+        content: bytes,
+        target_relative_path: str,
+        resource_type: str | None = None,
+        resource_id: str | None = None,
+    ) -> dict[str, Any]:
+        data = {
+            "target_relative_path": target_relative_path,
+            "resource_type": resource_type or "",
+            "resource_id": resource_id or "",
+        }
+        files = {"file": (filename, content)}
+        async with httpx.AsyncClient(timeout=max(self.timeout, 60), headers=self.headers()) as client:
+            response = await client.post(
+                _join_url(self.api_base_url, f"{self.route_prefix}/compute/files/upload"),
+                data=data,
+                files=files,
+            )
+            response.raise_for_status()
+            return _unwrap_dict(response.json())

backend/app/modules/compute_gateway/sync.py

@@ -0,0 +1,44 @@
+from __future__ import annotations
+
+from typing import Any
+
+from app.db.platform_store import get_platform_store
+from app.modules.compute_gateway.client import ComputeNodeClient
+
+
+def _node_for_task(task: dict[str, Any]) -> dict[str, Any] | None:
+    return next((node for node in get_platform_store().compute_nodes() if node["id"] == task.get("compute_node_id")), None)
+
+
+async def poll_compute_jobs_once() -> dict[str, Any]:
+    store = get_platform_store()
+    synced: list[dict[str, Any]] = []
+    failed: list[dict[str, str]] = []
+    for task in store.running_compute_tasks():
+        node = _node_for_task(task)
+        if not node:
+            failed.append({"task_id": task["id"], "error": "compute node not found"})
+            continue
+        try:
+            client = ComputeNodeClient(node["api_base_url"])
+            job = await client.get_job(task["compute_job_id"])
+            try:
+                logs = await client.job_logs(task["compute_job_id"], tail_lines=5000)
+                store.record_training_log_metrics(task["id"], str(logs.get("content") or ""))
+            except Exception:
+                pass
+            synced.append(store.apply_compute_job(task["id"], job))
+        except Exception as exc:  # noqa: BLE001 - keep polling other jobs
+            failed.append({"task_id": task["id"], "error": str(exc)})
+    standalone_synced: list[dict[str, Any]] = []
+    for record in store.active_standalone_compute_jobs():
+        node = next((item for item in store.compute_nodes() if item["id"] == record.get("node_id")), None)
+        if not node:
+            failed.append({"job_id": record["id"], "error": "compute node not found"})
+            continue
+        try:
+            job = await ComputeNodeClient(node["api_base_url"]).get_job(record["id"])
+            standalone_synced.append(store.sync_model_merge_job(record["id"], job))
+        except Exception as exc:  # noqa: BLE001 - keep polling other jobs
+            failed.append({"job_id": record["id"], "error": str(exc)})
+    return {"synced": len(synced) + len(standalone_synced), "failed": failed, "items": synced, "standalone": standalone_synced}

backend/app/modules/data_process/__init__.py

@@ -0,0 +1 @@
+"""Data processing module."""

backend/app/modules/data_process/constants.py

@@ -0,0 +1,7 @@
+"""数据处理模块的共享限制。"""
+
+MAX_QA_PAIRS_PER_ITEM = 50
+MODEL_GENERATION_BATCH_SIZE = 10
+
+
+__all__ = ["MAX_QA_PAIRS_PER_ITEM", "MODEL_GENERATION_BATCH_SIZE"]

backend/app/modules/data_process/document_chunking.py

@@ -0,0 +1,444 @@
+"""基于 Docling 与 LlamaIndex 的文档切分实现。"""
+
+from __future__ import annotations
+
+import os
+import re
+import threading
+import unicodedata
+from dataclasses import dataclass
+from functools import lru_cache
+from io import BytesIO
+from typing import Any, Literal
+
+import tiktoken
+from docling_core.transforms.chunker.hierarchical_chunker import ChunkingSerializerProvider
+from llama_index.core import Document
+from llama_index.core.base.embeddings.base import BaseEmbedding
+from llama_index.core.node_parser import SemanticSplitterNodeParser, SentenceSplitter
+
+from app.modules.data_process.algorithms import normalize_text
+
+ChunkMethod = Literal["layout_hybrid", "semantic", "fixed"]
+
+_PAGE_FURNITURE = re.compile(
+    r"(?m)^\s*(?:第\s*\d+\s*页\s*共\s*\d+\s*页|[-—–]?\s*\d+\s*[/／]\s*\d+\s*[-—–]?)\s*$"
+)
+_COMPACT_CHARACTER = re.compile(r"[\w\u3400-\u4dbf\u4e00-\u9fff]", re.UNICODE)
+_CONVERTER_LOCK = threading.Lock()
+
+
+@dataclass(frozen=True, slots=True)
+class DocumentChunk:
+    """切片正文及其在原文件中的可追溯信息。"""
+
+    original_content: str
+    contextualized_content: str
+    source_start: int | None
+    source_end: int | None
+    source_start_line: int | None
+    source_end_line: int | None
+    token_count: int
+    heading_path: tuple[str, ...] = ()
+    source_pages: tuple[int, ...] = ()
+    doc_item_refs: tuple[str, ...] = ()
+    source_bboxes: tuple[dict[str, Any], ...] = ()
+
+
+def _sentence_chunks(text: str) -> list[str]:
+    """提供稳定的中英文句界，避免 LlamaIndex 默认分词器下载额外资源。"""
+
+    boundary = re.compile(
+        r".*?(?:\n\s*\n|[。！？!?；;](?:[\"'”’）】》]*)|\.(?:\s+|$)|$)",
+        re.DOTALL,
+    )
+    return [part for part in boundary.findall(text) if part]
+
+
+@lru_cache(maxsize=1)
+def _tokenizer() -> tiktoken.Encoding:
+    return tiktoken.get_encoding("cl100k_base")
+
+
+def _text_chunks(
+    text: str,
+    *,
+    chunk_size: int,
+    chunk_overlap: int,
+) -> list[DocumentChunk]:
+    normalized = normalize_text(text)
+    if not normalized:
+        return []
+    splitter = SentenceSplitter(
+        chunk_size=chunk_size,
+        chunk_overlap=chunk_overlap,
+        tokenizer=_tokenizer().encode,
+        chunking_tokenizer_fn=_sentence_chunks,
+        include_metadata=False,
+        include_prev_next_rel=False,
+    )
+    nodes = splitter.get_nodes_from_documents([Document(text=normalized)])
+    return _nodes_to_chunks(nodes, normalized)
+
+
+def chunk_fixed_text(
+    text: str,
+    *,
+    chunk_size: int,
+    chunk_overlap: int,
+) -> list[DocumentChunk]:
+    """使用 LlamaIndex SentenceSplitter 按句界控制固定 Token 长度。"""
+
+    return _text_chunks(text, chunk_size=chunk_size, chunk_overlap=chunk_overlap)
+
+
+@lru_cache(maxsize=1)
+def _semantic_embedding_model() -> BaseEmbedding:
+    # 模型可在部署环境覆盖；默认模型体积较小且适合中英文语义边界判断。
+    from llama_index.embeddings.huggingface import HuggingFaceEmbedding
+
+    return HuggingFaceEmbedding(
+        model_name=os.getenv("DATA_PROCESS_EMBEDDING_MODEL", "BAAI/bge-small-zh-v1.5"),
+        device=os.getenv("DATA_PROCESS_EMBEDDING_DEVICE", "cpu"),
+        trust_remote_code=False,
+    )
+
+
+def chunk_semantic_text(
+    text: str,
+    *,
+    chunk_size: int,
+    chunk_overlap: int,
+    breakpoint_percentile_threshold: int,
+    embed_model: BaseEmbedding | None = None,
+) -> list[DocumentChunk]:
+    """使用 LlamaIndex SemanticSplitter 识别主题跳变，再限制最大长度。"""
+
+    normalized = normalize_text(text)
+    if not normalized:
+        return []
+    splitter = SemanticSplitterNodeParser.from_defaults(
+        embed_model=embed_model or _semantic_embedding_model(),
+        breakpoint_percentile_threshold=breakpoint_percentile_threshold,
+        buffer_size=1,
+        sentence_splitter=_sentence_chunks,
+        include_metadata=False,
+        include_prev_next_rel=False,
+    )
+    semantic_nodes = splitter.get_nodes_from_documents([Document(text=normalized)])
+    result: list[DocumentChunk] = []
+    search_from = 0
+    for node in semantic_nodes:
+        content = node.get_content().strip()
+        if not content:
+            continue
+        start = _locate_text(normalized, content, search_from)
+        if start is None:
+            start = _locate_text(normalized, content, 0)
+        if start is None:
+            continue
+        if len(_tokenizer().encode(content)) <= chunk_size:
+            result.append(_make_text_chunk(normalized, start, start + len(content)))
+        else:
+            for child in _text_chunks(
+                content,
+                chunk_size=chunk_size,
+                chunk_overlap=chunk_overlap,
+            ):
+                if child.source_start is None or child.source_end is None:
+                    continue
+                result.append(
+                    _make_text_chunk(
+                        normalized,
+                        start + child.source_start,
+                        start + child.source_end,
+                    )
+                )
+        search_from = start + len(content)
+    return result
+
+
+def _nodes_to_chunks(nodes: list[Any], source_text: str) -> list[DocumentChunk]:
+    chunks: list[DocumentChunk] = []
+    search_from = 0
+    for node in nodes:
+        content = node.get_content().strip()
+        if not content:
+            continue
+        raw_start = getattr(node, "start_char_idx", None)
+        raw_end = getattr(node, "end_char_idx", None)
+        if (
+            isinstance(raw_start, int)
+            and isinstance(raw_end, int)
+            and source_text[raw_start:raw_end].strip() == content
+        ):
+            start = raw_start + len(source_text[raw_start:raw_end]) - len(source_text[raw_start:raw_end].lstrip())
+        else:
+            start = _locate_text(source_text, content, search_from)
+            if start is None:
+                start = _locate_text(source_text, content, 0)
+        if start is None:
+            continue
+        end = start + len(content)
+        chunks.append(_make_text_chunk(source_text, start, end))
+        search_from = max(search_from, end)
+    return chunks
+
+
+def _locate_text(source: str, content: str, start: int) -> int | None:
+    position = source.find(content, start)
+    return position if position >= 0 else None
+
+
+def _make_text_chunk(source: str, start: int, end: int) -> DocumentChunk:
+    content = source[start:end]
+    return DocumentChunk(
+        original_content=content,
+        contextualized_content=content,
+        source_start=start,
+        source_end=end,
+        source_start_line=source.count("\n", 0, start) + 1,
+        source_end_line=source.count("\n", 0, max(start, end - 1)) + 1,
+        token_count=len(_tokenizer().encode(content)),
+    )
+
+
+@lru_cache(maxsize=1)
+def _document_converter():
+    from docling.document_converter import DocumentConverter
+
+    return DocumentConverter()
+
+
+class _MarkdownSerializerProvider(ChunkingSerializerProvider):
+    def get_serializer(self, doc: Any):
+        from docling_core.transforms.chunker.hierarchical_chunker import ChunkingDocSerializer
+        from docling_core.transforms.serializer.markdown import (
+            MarkdownParams,
+            MarkdownTableSerializer,
+        )
+        from docling_core.types.doc import DocItemLabel
+
+        excluded = {
+            DocItemLabel.DOCUMENT_INDEX,
+            DocItemLabel.PAGE_HEADER,
+            DocItemLabel.PAGE_FOOTER,
+        }
+        return ChunkingDocSerializer(
+            doc=doc,
+            table_serializer=MarkdownTableSerializer(),
+            params=MarkdownParams(
+                labels=set(DocItemLabel) - excluded,
+                compact_tables=True,
+                image_placeholder="",
+                escape_html=False,
+                escape_underscores=False,
+            ),
+        )
+
+
+def _clean_layout_text(value: str) -> str:
+    return normalize_text(_PAGE_FURNITURE.sub("", value)).strip()
+
+
+def _compact_with_offsets(value: str) -> tuple[str, list[int]]:
+    compact: list[str] = []
+    offsets: list[int] = []
+    for index, character in enumerate(unicodedata.normalize("NFKC", value)):
+        if _COMPACT_CHARACTER.fullmatch(character):
+            compact.append(character.casefold())
+            offsets.append(index)
+    return "".join(compact), offsets
+
+
+def _project_layout_span(
+    source_text: str,
+    content: str,
+    *,
+    compact_source: str,
+    source_offsets: list[int],
+    compact_start: int,
+) -> tuple[int | None, int | None, int]:
+    compact_content, _ = _compact_with_offsets(content)
+    if len(compact_content) < 4:
+        return None, None, compact_start
+    position = compact_source.find(compact_content, compact_start)
+    if position < 0:
+        position = compact_source.find(compact_content)
+    if position < 0:
+        return None, None, compact_start
+    start = source_offsets[position]
+    end = source_offsets[position + len(compact_content) - 1] + 1
+    while start > 0 and source_text[start - 1] not in "\r\n":
+        start -= 1
+    while end < len(source_text) and source_text[end] not in "\r\n":
+        end += 1
+    return start, end, position + len(compact_content)
+
+
+def chunk_layout_document(
+    raw: bytes,
+    *,
+    filename: str,
+    source_text: str,
+    chunk_size: int,
+) -> list[DocumentChunk]:
+    """使用 Docling HybridChunker 按版面层级、列表与表格边界切分。"""
+
+    from docling.chunking import HybridChunker
+    from docling.datamodel.base_models import DocumentStream
+    from docling.exceptions import BaseError as DoclingError
+    from docling_core.transforms.chunker.tokenizer.openai import OpenAITokenizer
+    from docling_core.types.doc import DocItemLabel
+
+    try:
+        with _CONVERTER_LOCK:
+            conversion = _document_converter().convert(
+                DocumentStream(name=filename, stream=BytesIO(raw))
+            )
+    except DoclingError as exc:
+        raise ValueError(f"文档版面解析失败: {exc}") from exc
+    chunker = HybridChunker(
+        tokenizer=OpenAITokenizer(tokenizer=_tokenizer(), max_tokens=chunk_size),
+        serializer_provider=_MarkdownSerializerProvider(),
+        merge_peers=True,
+        repeat_table_header=True,
+    )
+    compact_source, source_offsets = _compact_with_offsets(source_text)
+    compact_start = 0
+    result: list[DocumentChunk] = []
+    excluded = {
+        DocItemLabel.DOCUMENT_INDEX,
+        DocItemLabel.PAGE_HEADER,
+        DocItemLabel.PAGE_FOOTER,
+    }
+    for raw_chunk in chunker.chunk(conversion.document):
+        doc_items = tuple(raw_chunk.meta.doc_items or ())
+        if doc_items and all(item.label in excluded for item in doc_items):
+            continue
+        content = _clean_layout_text(raw_chunk.text)
+        if not content:
+            continue
+        contextualized = _clean_layout_text(chunker.contextualize(raw_chunk)) or content
+        start, end, compact_start = _project_layout_span(
+            source_text,
+            content,
+            compact_source=compact_source,
+            source_offsets=source_offsets,
+            compact_start=compact_start,
+        )
+        original = source_text[start:end] if start is not None and end is not None else content
+        pages: set[int] = set()
+        refs: list[str] = []
+        bboxes: list[dict[str, Any]] = []
+        for item in doc_items:
+            refs.append(str(item.self_ref))
+            for provenance in item.prov or ():
+                pages.add(int(provenance.page_no))
+                bbox = provenance.bbox
+                bboxes.append(
+                    {
+                        "page": int(provenance.page_no),
+                        "left": float(bbox.l),
+                        "top": float(bbox.t),
+                        "right": float(bbox.r),
+                        "bottom": float(bbox.b),
+                        "origin": str(bbox.coord_origin.value),
+                    }
+                )
+        result.append(
+            DocumentChunk(
+                original_content=original,
+                contextualized_content=contextualized,
+                source_start=start,
+                source_end=end,
+                source_start_line=(source_text.count("\n", 0, start) + 1 if start is not None else None),
+                source_end_line=(
+                    source_text.count("\n", 0, max(start or 0, (end or 1) - 1)) + 1
+                    if end is not None
+                    else None
+                ),
+                token_count=len(_tokenizer().encode(contextualized)),
+                heading_path=tuple(str(item) for item in (raw_chunk.meta.headings or ())),
+                source_pages=tuple(sorted(pages)),
+                doc_item_refs=tuple(refs),
+                source_bboxes=tuple(bboxes),
+            )
+        )
+    return result
+
+
+def merge_short_chunks(
+    chunks: list[DocumentChunk],
+    *,
+    source_text: str,
+    min_token_count: int,
+    max_token_count: int,
+) -> list[DocumentChunk]:
+    """在不突破长度上限的前提下，把过短块并入相邻内容。"""
+
+    result: list[DocumentChunk] = []
+    index = 0
+    while index < len(chunks):
+        current = chunks[index]
+        if current.token_count >= min_token_count:
+            result.append(current)
+            index += 1
+            continue
+        if index + 1 < len(chunks):
+            combined = _combine_chunks(current, chunks[index + 1], source_text)
+            if combined.token_count <= max_token_count:
+                result.append(combined)
+                index += 2
+                continue
+        if result:
+            combined = _combine_chunks(result[-1], current, source_text)
+            if combined.token_count <= max_token_count:
+                result[-1] = combined
+                index += 1
+                continue
+        result.append(current)
+        index += 1
+    return result
+
+
+def _combine_chunks(
+    left: DocumentChunk,
+    right: DocumentChunk,
+    source_text: str,
+) -> DocumentChunk:
+    contextualized = "\n\n".join(
+        part for part in (left.contextualized_content, right.contextualized_content) if part
+    )
+    start = left.source_start
+    end = right.source_end
+    has_contiguous_source = (
+        start is not None
+        and left.source_end is not None
+        and right.source_start is not None
+        and end is not None
+        and left.source_end <= right.source_start
+    )
+    original = (
+        source_text[start:end]
+        if has_contiguous_source and start is not None and end is not None
+        else "\n\n".join(
+            part for part in (left.original_content, right.original_content) if part
+        )
+    )
+    if not has_contiguous_source:
+        start = None
+        end = None
+    return DocumentChunk(
+        original_content=original,
+        contextualized_content=contextualized,
+        source_start=start,
+        source_end=end,
+        source_start_line=left.source_start_line if start is not None else None,
+        source_end_line=right.source_end_line if end is not None else None,
+        token_count=len(_tokenizer().encode(contextualized)),
+        heading_path=left.heading_path or right.heading_path,
+        source_pages=tuple(sorted(set(left.source_pages) | set(right.source_pages))),
+        doc_item_refs=left.doc_item_refs + right.doc_item_refs,
+        source_bboxes=left.source_bboxes + right.source_bboxes,
+    )

backend/app/modules/data_process/generation.py

@@ -0,0 +1,316 @@
+"""数据处理任务的大模型生成适配器。"""
+
+from __future__ import annotations
+
+import hashlib
+import json
+import re
+from collections.abc import Callable, Iterable, Mapping
+from typing import Any
+from urllib.parse import urlsplit, urlunsplit
+
+import httpx
+
+from app.modules.data_process.algorithms import normalize_text, stable_split_assignments
+from app.modules.data_process.constants import (
+    MAX_QA_PAIRS_PER_ITEM,
+    MODEL_GENERATION_BATCH_SIZE,
+)
+
+
+class ModelGenerationError(ValueError):
+    """模型配置、响应或调用失败。"""
+
+
+def chat_completions_url(value: str) -> str:
+    """把域名、基础 URL 或完整地址统一为 chat completions 地址。"""
+
+    raw = (value or "").strip()
+    if not raw:
+        raise ModelGenerationError("generation model api_url is required")
+    if "://" not in raw:
+        raw = f"https://{raw}"
+    parsed = urlsplit(raw)
+    if parsed.scheme not in {"http", "https"} or not parsed.hostname:
+        raise ModelGenerationError("generation model api_url must be an HTTP(S) host or URL")
+    if parsed.username or parsed.password:
+        raise ModelGenerationError("generation model api_url must not contain credentials")
+
+    path = parsed.path.rstrip("/")
+    if path.endswith("/chat/completions"):
+        target_path = path
+    elif path.endswith("/v1"):
+        target_path = f"{path}/chat/completions"
+    elif not path:
+        target_path = "/v1/chat/completions"
+    else:
+        target_path = f"{path}/v1/chat/completions"
+    return urlunsplit((parsed.scheme, parsed.netloc, target_path, "", ""))
+
+
+def _message_content(payload: Mapping[str, Any]) -> str:
+    try:
+        content = payload["choices"][0]["message"]["content"]
+    except (KeyError, IndexError, TypeError) as exc:
+        raise ModelGenerationError("model response does not contain choices[0].message.content") from exc
+    if isinstance(content, str):
+        return content
+    if isinstance(content, list):
+        parts = [
+            str(item.get("text") or "")
+            for item in content
+            if isinstance(item, Mapping) and item.get("type") in {None, "text", "output_text"}
+        ]
+        if parts:
+            return "".join(parts)
+    raise ModelGenerationError("model response content must be text")
+
+
+def _json_payload(content: str) -> Any:
+    cleaned = re.sub(r"<think>[\s\S]*?</think>", "", content, flags=re.IGNORECASE).strip()
+    fenced = re.fullmatch(r"```(?:json)?\s*([\s\S]*?)\s*```", cleaned, flags=re.IGNORECASE)
+    if fenced:
+        cleaned = fenced.group(1).strip()
+    try:
+        return json.loads(cleaned)
+    except json.JSONDecodeError as exc:
+        raise ModelGenerationError(
+            f"model response is not valid JSON at line {exc.lineno}, column {exc.colno}"
+        ) from exc
+
+
+def _result_items(payload: Any) -> list[Mapping[str, Any]]:
+    if isinstance(payload, list):
+        values = payload
+    elif isinstance(payload, Mapping):
+        nested = next(
+            (
+                payload[key]
+                for key in ("items", "results", "data", "records")
+                if isinstance(payload.get(key), list)
+            ),
+            None,
+        )
+        values = nested if isinstance(nested, list) else [payload]
+    else:
+        raise ModelGenerationError("model JSON must be an object or array")
+    items = [item for item in values if isinstance(item, Mapping)]
+    if not items:
+        raise ModelGenerationError("model JSON does not contain result objects")
+    return items
+
+
+def _prompt_messages(
+    prompt: str,
+    content: str,
+    count: int,
+    *,
+    start_index: int,
+    total_count: int,
+) -> list[dict[str, str]]:
+    end_index = start_index + count - 1
+    schema_instruction = (
+        f"必须只返回 JSON 对象，格式为 {{\"items\":[{{\"instruction\":\"...\","
+        f"\"input\":\"...\",\"output\":\"...\"}}]}}；items 必须包含 {count} 条。"
+        f"这是总计 {total_count} 条中的第 {start_index}-{end_index} 条，"
+        "各条必须使用不同的提问角度和表述，避免重复。"
+        "instruction 和 output 不得为空，不要输出 Markdown 代码围栏或分析过程。"
+    )
+    base_prompt = (
+        normalize_text(prompt)
+        or "请根据来源内容生成可用于监督微调的问答数据。"
+    )
+    if "{{ content }}" in base_prompt:
+        user_prompt = base_prompt.replace("{{ content }}", content)
+        return [
+            {"role": "system", "content": schema_instruction},
+            {"role": "user", "content": user_prompt},
+        ]
+    return [
+        {"role": "system", "content": f"{base_prompt}\n{schema_instruction}"},
+        {"role": "user", "content": f"来源内容：\n{content}"},
+    ]
+
+
+def generate_model_records(
+    preview_items: Iterable[Mapping[str, Any]],
+    *,
+    model: Mapping[str, Any],
+    config: Mapping[str, Any],
+    task_id: str,
+    split: Mapping[str, int],
+    qa_pairs_per_item: int,
+    client: httpx.Client | None = None,
+    on_progress: Callable[[int, int], None] | None = None,
+) -> list[dict[str, Any]]:
+    """调用 OpenAI 兼容接口，将预览切片生成标准训练记录。
+
+    每个切片按安全批次调用模型；失败批次会产生一条可人工修复的
+    invalid 结果，已经成功的批次不会丢失。
+    """
+
+    if not 1 <= qa_pairs_per_item <= MAX_QA_PAIRS_PER_ITEM:
+        raise ModelGenerationError(
+            f"qa_pairs_per_item must be in [1, {MAX_QA_PAIRS_PER_ITEM}]"
+        )
+    endpoint = chat_completions_url(str(model.get("api_url") or ""))
+    model_name = str(model.get("online_model_name") or model.get("name") or "").strip()
+    if not model_name:
+        raise ModelGenerationError("generation model name is required")
+
+    temperature = float(config.get("temperature", 0.7))
+    max_tokens = int(config.get("max_tokens", 1024))
+    timeout = max(1.0, min(120.0, float(config.get("request_timeout_seconds", 60))))
+    retries = max(0, min(5, int(config.get("generation_retries", 2))))
+    headers = {"Content-Type": "application/json"}
+    api_key = str(model.get("api_key") or "").strip()
+    if api_key:
+        headers["Authorization"] = f"Bearer {api_key}"
+
+    owns_client = client is None
+    http_client = client or httpx.Client(timeout=timeout)
+    results: list[dict[str, Any]] = []
+    try:
+        preview_list = list(preview_items)
+        total_items = len(preview_list)
+        for item_index, item in enumerate(preview_list):
+            preview_id = str(item.get("id") or f"preview-{item_index + 1}")
+            content = normalize_text(
+                str(item.get("edited_content") or item.get("original_content") or "")
+            )
+            for batch_offset in range(0, qa_pairs_per_item, MODEL_GENERATION_BATCH_SIZE):
+                batch_count = min(
+                    MODEL_GENERATION_BATCH_SIZE,
+                    qa_pairs_per_item - batch_offset,
+                )
+                batch_start = batch_offset + 1
+                batch_end = batch_offset + batch_count
+                request_payload: dict[str, Any] = {
+                    "model": model_name,
+                    "messages": _prompt_messages(
+                        str(config.get("generation_prompt") or ""),
+                        content,
+                        batch_count,
+                        start_index=batch_start,
+                        total_count=qa_pairs_per_item,
+                    ),
+                    "temperature": temperature,
+                    "max_tokens": max_tokens,
+                }
+                if bool(config.get("json_mode", False)):
+                    request_payload["response_format"] = {"type": "json_object"}
+
+                last_error: Exception | None = None
+                generated_items: list[Mapping[str, Any]] | None = None
+                for _ in range(retries + 1):
+                    try:
+                        response = http_client.post(
+                            endpoint,
+                            headers=headers,
+                            json=request_payload,
+                        )
+                        response.raise_for_status()
+                        body = response.json()
+                        if not isinstance(body, Mapping):
+                            raise ModelGenerationError(
+                                "model response body must be a JSON object"
+                            )
+                        candidate_items = _result_items(
+                            _json_payload(_message_content(body))
+                        )
+                        if len(candidate_items) < batch_count:
+                            raise ModelGenerationError(
+                                "model response contains fewer result objects than requested: "
+                                f"expected {batch_count}, got {len(candidate_items)}"
+                            )
+                        generated_items = candidate_items
+                        break
+                    except (
+                        httpx.HTTPError,
+                        json.JSONDecodeError,
+                        ModelGenerationError,
+                    ) as exc:
+                        last_error = exc
+
+                if generated_items is None:
+                    error_message = str(last_error or "model generation failed")[:2000]
+                    failure_instruction = (
+                        f"模型生成失败，请人工补充（第 {batch_start}-{batch_end} 条）"
+                    )
+                    result_id = (
+                        "result_"
+                        f"{hashlib.sha256(f'{preview_id}:error:{batch_start}'.encode()).hexdigest()[:16]}"
+                    )
+                    results.append(
+                        {
+                            "id": result_id,
+                            "preview_item_id": preview_id,
+                            "instruction": failure_instruction,
+                            "input": content,
+                            "output": "",
+                            "original_instruction": failure_instruction,
+                            "original_input": content,
+                            "original_output": "",
+                            "status": "invalid",
+                            "error": error_message,
+                            "split": "train",
+                        }
+                    )
+                    continue
+
+                for batch_index, value in enumerate(generated_items[:batch_count]):
+                    variant_index = batch_offset + batch_index
+                    instruction = normalize_text(
+                        str(value.get("instruction") or value.get("question") or "")
+                    )
+                    input_text = normalize_text(
+                        str(value.get("input") or value.get("context") or "")
+                    )
+                    output = normalize_text(
+                        str(
+                            value.get("output")
+                            or value.get("answer")
+                            or value.get("response")
+                            or ""
+                        )
+                    )
+                    raw_id = f"{preview_id}:{variant_index + 1}:{instruction}:{output}"
+                    result_id = (
+                        f"result_{hashlib.sha256(raw_id.encode()).hexdigest()[:16]}"
+                    )
+                    valid = bool(instruction and output)
+                    results.append(
+                        {
+                            "id": result_id,
+                            "preview_item_id": preview_id,
+                            "instruction": instruction,
+                            "input": input_text,
+                            "output": output,
+                            "original_instruction": instruction,
+                            "original_input": input_text,
+                            "original_output": output,
+                            "status": "valid" if valid else "invalid",
+                            "error": (
+                                None
+                                if valid
+                                else "model result is missing instruction or output"
+                            ),
+                            "split": "train",
+                        }
+                    )
+            if on_progress:
+                on_progress(item_index + 1, total_items)
+    finally:
+        if owns_client:
+            http_client.close()
+    assignments = stable_split_assignments(
+        [str(result["id"]) for result in results],
+        split,
+        seed=task_id,
+    )
+    for result, assignment in zip(results, assignments, strict=True):
+        result["split"] = assignment
+    return results
+
+
+__all__ = ["ModelGenerationError", "chat_completions_url", "generate_model_records"]

backend/app/modules/data_process/schema_cli.py

@@ -0,0 +1,65 @@
+"""数据处理运行表的显式检查与安装命令。"""
+
+from __future__ import annotations
+
+import argparse
+from urllib.parse import urlsplit
+
+from app.modules.data_process.store import DataProcessStore
+
+
+def _target_label(database_url: str) -> str:
+    parsed = urlsplit(database_url)
+    database = parsed.path.strip("/") or "(unknown)"
+    return f"{parsed.hostname or '(unknown)'}:{parsed.port or 5432}/{database}"
+
+
+def _schema_ready(store: DataProcessStore) -> bool:
+    with store.connect() as conn:
+        row = conn.execute(
+            """
+            SELECT EXISTS (
+                SELECT 1
+                FROM information_schema.columns
+                WHERE table_schema=current_schema()
+                  AND table_name='data_process_tasks'
+                  AND column_name='generation_run_id'
+            ) AS ready
+            """
+        ).fetchone()
+    return bool(row and row["ready"])
+
+
+def main() -> int:
+    parser = argparse.ArgumentParser(
+        description="检查或显式安装数据处理运行表（不会由应用启动自动执行）"
+    )
+    action = parser.add_mutually_exclusive_group(required=True)
+    action.add_argument("--check", action="store_true", help="只读检查迁移是否已安装")
+    action.add_argument("--apply", action="store_true", help="执行 002 数据处理迁移")
+    parser.add_argument(
+        "--yes",
+        action="store_true",
+        help="确认允许修改 DATABASE_URL 指向的数据库；与 --apply 同时使用",
+    )
+    args = parser.parse_args()
+
+    store = DataProcessStore()
+    target = _target_label(store.database_url)
+    if args.check:
+        ready = _schema_ready(store)
+        print(f"数据处理 schema：{'已安装' if ready else '未安装'}；目标：{target}")
+        return 0 if ready else 1
+    if not args.yes:
+        parser.error("--apply 必须同时提供 --yes，确认修改目标数据库")
+
+    print(f"正在安装数据处理 schema；目标：{target}")
+    store.ensure_schema()
+    if not _schema_ready(store):
+        raise RuntimeError("迁移执行后仍未检测到 generation_run_id")
+    print("数据处理 schema 安装完成")
+    return 0
+
+
+if __name__ == "__main__":
+    raise SystemExit(main())

backend/app/modules/data_process/storage.py

@@ -0,0 +1,499 @@
+"""数据处理原始源文件的受控本地对象存储。"""
+
+from __future__ import annotations
+
+import os
+import re
+import stat
+import unicodedata
+import uuid
+from dataclasses import dataclass
+from functools import lru_cache
+from pathlib import Path, PurePosixPath
+from typing import Iterable, Iterator
+from urllib.parse import quote, unquote, urlsplit
+
+
+class DataProcessStorageError(ValueError):
+    """本地对象引用或文件系统状态不安全。"""
+
+
+@dataclass(frozen=True, slots=True)
+class StagedSourceObject:
+    """尚未发布的原始文件；绝对路径仅在存储模块内部流转。"""
+
+    reference: str
+    _temporary_path: Path
+    _relative_path: PurePosixPath
+
+
+def _default_storage_root() -> Path:
+    return Path(__file__).resolve().parents[3] / "storage" / "data-process"
+
+
+def _configured_storage_root() -> Path:
+    configured = os.getenv("DATA_PROCESS_STORAGE_DIR", "").strip()
+    if not configured:
+        return _default_storage_root()
+    path = Path(configured).expanduser()
+    # 相对配置固定以 backend 目录为基准，
+    # 避免从不同 cwd 启动时写入不同位置。
+    return path if path.is_absolute() else Path(__file__).resolve().parents[3] / path
+
+
+def _safe_component(value: str, label: str) -> str:
+    if not value or value in {".", ".."} or len(value) > 128:
+        raise DataProcessStorageError(f"invalid {label}")
+    if not value[0].isalnum() or any(
+        not (character.isalnum() or character in {"-", "_", "."})
+        for character in value
+    ):
+        raise DataProcessStorageError(f"invalid {label}")
+    return value
+
+
+def _safe_basename(value: str) -> str:
+    if not value or len(value.encode("utf-8")) > 255:
+        raise DataProcessStorageError("invalid source file name")
+    if value != Path(value).name or "/" in value or "\\" in value or "\x00" in value:
+        raise DataProcessStorageError("invalid source file name")
+    if value in {".", ".."} or any(
+        unicodedata.category(character).startswith("C") for character in value
+    ):
+        raise DataProcessStorageError("invalid source file name")
+    return value
+
+
+class LocalDataProcessStorage:
+    """只允许访问配置根目录下的版本化原始文件。"""
+
+    def __init__(self, root: str | os.PathLike[str] | Path | None = None) -> None:
+        configured = Path(root) if root is not None else _configured_storage_root()
+        configured = configured.expanduser()
+        if configured.exists() and configured.is_symlink():
+            raise DataProcessStorageError("data process storage root must not be a symlink")
+        configured.mkdir(parents=True, exist_ok=True, mode=0o700)
+        self._root = configured.resolve(strict=True)
+        # StagedSourceObject 本身是普通 dataclass，不能只依赖其中的路径字段判断
+        # 来源；只接受由当前存储实例实际签发的对象，
+        # 避免调用方伪造暂存路径。
+        self._issued_staged_objects: dict[Path, StagedSourceObject] = {}
+        self._ensure_directory(self._root / ".staging")
+
+    @property
+    def root(self) -> Path:
+        """仅供运维和测试检查；API 响应不得序列化该属性。"""
+
+        return self._root
+
+    def new_batch_id(self) -> str:
+        return f"batch-{uuid.uuid4().hex}"
+
+    def stage_bytes(
+        self,
+        *,
+        batch_id: str,
+        task_id: str,
+        source_file_id: str,
+        version: int,
+        name: str,
+        content: bytes,
+    ) -> StagedSourceObject:
+        batch_id = _safe_component(batch_id, "batch id")
+        task_id = _safe_component(task_id, "task id")
+        source_file_id = _safe_component(source_file_id, "source file id")
+        if isinstance(version, bool) or not isinstance(version, int) or version < 1:
+            raise DataProcessStorageError("invalid source file version")
+        basename = _safe_basename(name)
+        if not isinstance(content, bytes):
+            raise TypeError("content must be bytes")
+
+        batch_directory = self._ensure_directory(self._root / ".staging" / batch_id)
+        temporary_path = batch_directory / f"{source_file_id}-{uuid.uuid4().hex}.tmp"
+        flags = os.O_CREAT | os.O_EXCL | os.O_WRONLY
+        if hasattr(os, "O_NOFOLLOW"):
+            flags |= os.O_NOFOLLOW
+        descriptor = os.open(temporary_path, flags, 0o600)
+        try:
+            with os.fdopen(descriptor, "wb", closefd=True) as stream:
+                stream.write(content)
+                stream.flush()
+                os.fsync(stream.fileno())
+        except Exception:
+            temporary_path.unlink(missing_ok=True)
+            raise
+
+        relative_path = PurePosixPath(
+            task_id,
+            source_file_id,
+            f"v{version}",
+            basename,
+        )
+        reference = (
+            "local://data-process/"
+            f"{task_id}/{source_file_id}/v{version}/{quote(basename, safe='')}"
+        )
+        staged = StagedSourceObject(reference, temporary_path, relative_path)
+        self._issued_staged_objects[temporary_path] = staged
+        return staged
+
+    def publish(self, objects: Iterable[StagedSourceObject]) -> None:
+        staged = list(objects)
+        published: list[StagedSourceObject] = []
+        try:
+            seen_temporary_paths: set[Path] = set()
+            for item in staged:
+                self._validate_staged_object(item, require_file=True)
+                if item._temporary_path in seen_temporary_paths:
+                    raise DataProcessStorageError("duplicate staged source object")
+                seen_temporary_paths.add(item._temporary_path)
+            for item in staged:
+                final_path = self._path_for_relative(item._relative_path)
+                self._ensure_directory(final_path.parent)
+                if final_path.exists() or final_path.is_symlink():
+                    raise DataProcessStorageError("source storage object already exists")
+                os.link(item._temporary_path, final_path, follow_symlinks=False)
+                published.append(item)
+                item._temporary_path.unlink()
+                self._fsync_directory(final_path.parent)
+        except Exception:
+            for item in reversed(published):
+                try:
+                    self.delete(item.reference)
+                except Exception:
+                    # 回滚必须尽量处理其余对象，并保留真正的发布异常。
+                    pass
+            for item in staged:
+                try:
+                    self.discard([item])
+                except Exception:
+                    pass
+            raise
+        self.discard(staged)
+
+    def discard(self, objects: Iterable[StagedSourceObject]) -> None:
+        staged = list(objects)
+        for item in staged:
+            self._validate_staged_object(item, require_file=False)
+
+        batch_directories: set[Path] = set()
+        first_error: Exception | None = None
+        for item in staged:
+            temporary_path = item._temporary_path
+            try:
+                temporary_path.unlink(missing_ok=True)
+            except Exception as exc:
+                if first_error is None:
+                    first_error = exc
+            else:
+                self._issued_staged_objects.pop(temporary_path, None)
+            batch_directories.add(temporary_path.parent)
+        for directory in batch_directories:
+            self._remove_empty_directory(directory)
+        if first_error is not None:
+            raise first_error
+
+    def read(self, reference: str) -> bytes | None:
+        """读取 local 引用；旧 ``db://`` 对象返回 ``None`` 由数据库正文兜底。"""
+
+        relative_path = self._relative_from_reference(reference)
+        if relative_path is None:
+            return None
+        descriptor, _ = self._open_read_descriptor(relative_path)
+        with os.fdopen(descriptor, "rb", closefd=True) as stream:
+            return stream.read()
+
+    def file_size(
+        self,
+        reference: str,
+        *,
+        expected_task_id: str,
+        expected_source_file_id: str,
+    ) -> int | None:
+        """返回受控 local 对象大小；旧 ``db://`` 对象没有原始文件。"""
+
+        relative_path = self._relative_from_reference(reference)
+        if relative_path is None:
+            return None
+        self._assert_expected_owner(
+            relative_path,
+            expected_task_id=expected_task_id,
+            expected_source_file_id=expected_source_file_id,
+        )
+        descriptor, info = self._open_read_descriptor(relative_path)
+        os.close(descriptor)
+        return info.st_size
+
+    def iter_bytes(
+        self,
+        reference: str,
+        *,
+        expected_task_id: str,
+        expected_source_file_id: str,
+        expected_size: int,
+        start: int = 0,
+        length: int | None = None,
+        chunk_size: int = 256 * 1024,
+    ) -> Iterator[bytes]:
+        """按范围流式读取原始文件，避免 PDF 预览把大文件整体载入内存。"""
+
+        relative_path = self._relative_from_reference(reference)
+        if relative_path is None:
+            raise DataProcessStorageError("original source object is not available")
+        self._assert_expected_owner(
+            relative_path,
+            expected_task_id=expected_task_id,
+            expected_source_file_id=expected_source_file_id,
+        )
+        if start < 0 or expected_size < 0 or chunk_size < 1:
+            raise DataProcessStorageError("invalid source byte range")
+        descriptor, info = self._open_read_descriptor(relative_path)
+        if info.st_size != expected_size:
+            os.close(descriptor)
+            raise DataProcessStorageError("source object size does not match metadata")
+        remaining = expected_size - start if length is None else length
+        if remaining < 0 or start + remaining > expected_size:
+            os.close(descriptor)
+            raise DataProcessStorageError("invalid source byte range")
+        with os.fdopen(descriptor, "rb", closefd=True) as stream:
+            stream.seek(start)
+            while remaining:
+                chunk = stream.read(min(chunk_size, remaining))
+                if not chunk:
+                    raise DataProcessStorageError("source object ended unexpectedly")
+                remaining -= len(chunk)
+                yield chunk
+
+    def validate_owner(
+        self,
+        reference: str,
+        *,
+        expected_task_id: str,
+        expected_source_file_id: str,
+    ) -> bool:
+        """校验 local 引用归属；旧 ``db://`` 引用无需文件系统处理。"""
+
+        relative_path = self._relative_from_reference(reference)
+        if relative_path is None:
+            return False
+        self._assert_expected_owner(
+            relative_path,
+            expected_task_id=expected_task_id,
+            expected_source_file_id=expected_source_file_id,
+        )
+        return True
+
+    def _open_read_descriptor(
+        self,
+        relative_path: PurePosixPath,
+    ) -> tuple[int, os.stat_result]:
+        path = self._path_for_relative(relative_path)
+        self._assert_controlled_parent(path)
+        try:
+            before_open = path.lstat()
+        except FileNotFoundError as exc:
+            raise DataProcessStorageError("source storage object does not exist") from exc
+        if stat.S_ISLNK(before_open.st_mode) or not stat.S_ISREG(before_open.st_mode):
+            raise DataProcessStorageError("source storage object is not a regular file")
+        flags = os.O_RDONLY
+        if hasattr(os, "O_NOFOLLOW"):
+            flags |= os.O_NOFOLLOW
+        descriptor = os.open(path, flags)
+        after_open = os.fstat(descriptor)
+        if (
+            not stat.S_ISREG(after_open.st_mode)
+            or before_open.st_dev != after_open.st_dev
+            or before_open.st_ino != after_open.st_ino
+        ):
+            os.close(descriptor)
+            raise DataProcessStorageError("source storage object changed while opening")
+        return descriptor, after_open
+
+    def delete(
+        self,
+        reference: str,
+        *,
+        expected_task_id: str | None = None,
+        expected_source_file_id: str | None = None,
+    ) -> bool:
+        """删除受控 local 对象；旧 ``db://`` 引用保持不变。"""
+
+        relative_path = self._relative_from_reference(reference)
+        if relative_path is None:
+            return False
+        if (expected_task_id is None) != (expected_source_file_id is None):
+            raise DataProcessStorageError("both expected storage owner fields are required")
+        if expected_task_id is not None and expected_source_file_id is not None:
+            self._assert_expected_owner(
+                relative_path,
+                expected_task_id=expected_task_id,
+                expected_source_file_id=expected_source_file_id,
+            )
+        path = self._path_for_relative(relative_path)
+        self._assert_controlled_parent(path)
+        try:
+            info = path.lstat()
+        except FileNotFoundError:
+            return False
+        if stat.S_ISLNK(info.st_mode) or not stat.S_ISREG(info.st_mode):
+            raise DataProcessStorageError("refusing to delete a non-regular storage object")
+        path.unlink()
+        self._fsync_directory(path.parent)
+        for directory in (path.parent, path.parent.parent, path.parent.parent.parent):
+            self._remove_empty_directory(directory)
+        return True
+
+    @staticmethod
+    def _assert_expected_owner(
+        relative_path: PurePosixPath,
+        *,
+        expected_task_id: str,
+        expected_source_file_id: str,
+    ) -> None:
+        task_id = _safe_component(expected_task_id, "expected task id")
+        source_file_id = _safe_component(
+            expected_source_file_id,
+            "expected source file id",
+        )
+        if relative_path.parts[:2] != (task_id, source_file_id):
+            raise DataProcessStorageError("source storage object owner mismatch")
+
+    def _relative_from_reference(self, reference: str) -> PurePosixPath | None:
+        if reference.startswith("db://"):
+            return None
+        parsed = urlsplit(reference)
+        if parsed.scheme != "local" or parsed.netloc != "data-process":
+            raise DataProcessStorageError("unsupported source storage reference")
+        if parsed.query or parsed.fragment or "\\" in parsed.path:
+            raise DataProcessStorageError("unsafe source storage reference")
+        raw_parts = parsed.path.lstrip("/").split("/")
+        if len(raw_parts) != 4:
+            raise DataProcessStorageError("unsafe source storage reference")
+        if any(re.search(r"%(?![0-9A-Fa-f]{2})", part) for part in raw_parts):
+            raise DataProcessStorageError("unsafe source storage reference")
+        try:
+            decoded = [unquote(part, encoding="utf-8", errors="strict") for part in raw_parts]
+        except UnicodeDecodeError as exc:
+            raise DataProcessStorageError("unsafe source storage reference") from exc
+        if any("/" in part or "\\" in part for part in decoded):
+            raise DataProcessStorageError("unsafe source storage reference")
+        canonical_parts = [
+            quote(decoded[0], safe="-_."),
+            quote(decoded[1], safe="-_."),
+            quote(decoded[2], safe="-_."),
+            quote(decoded[3], safe=""),
+        ]
+        if canonical_parts != raw_parts:
+            raise DataProcessStorageError("source storage reference is not canonical")
+        task_id = _safe_component(decoded[0], "task id")
+        source_file_id = _safe_component(decoded[1], "source file id")
+        version_component = decoded[2]
+        if not version_component.startswith("v") or not version_component[1:].isdigit():
+            raise DataProcessStorageError("invalid source file version")
+        version = int(version_component[1:])
+        if version < 1:
+            raise DataProcessStorageError("invalid source file version")
+        basename = _safe_basename(decoded[3])
+        return PurePosixPath(task_id, source_file_id, f"v{version}", basename)
+
+    def _path_for_relative(self, relative_path: PurePosixPath) -> Path:
+        if relative_path.is_absolute() or any(
+            part in {"", ".", ".."} for part in relative_path.parts
+        ):
+            raise DataProcessStorageError("storage path escapes the configured root")
+        path = self._root.joinpath(*relative_path.parts)
+        self._assert_controlled_parent(path)
+        return path
+
+    def _validate_staged_object(
+        self,
+        item: StagedSourceObject,
+        *,
+        require_file: bool,
+    ) -> None:
+        if not isinstance(item, StagedSourceObject):
+            raise DataProcessStorageError("invalid staged source object")
+        if self._issued_staged_objects.get(item._temporary_path) is not item:
+            raise DataProcessStorageError("staged source object was not issued by this storage")
+        expected_relative = self._relative_from_reference(item.reference)
+        if expected_relative is None or expected_relative != item._relative_path:
+            raise DataProcessStorageError("staged source object reference mismatch")
+        staging_root = self._root / ".staging"
+        try:
+            relative_temporary = item._temporary_path.relative_to(staging_root)
+        except ValueError as exc:
+            raise DataProcessStorageError("staged source object escapes staging") from exc
+        if len(relative_temporary.parts) != 2:
+            raise DataProcessStorageError("invalid staged source object path")
+        _safe_component(relative_temporary.parts[0], "batch id")
+        _safe_basename(relative_temporary.parts[1])
+        self._assert_controlled_parent(item._temporary_path)
+        try:
+            info = item._temporary_path.lstat()
+        except FileNotFoundError:
+            if require_file:
+                raise DataProcessStorageError("staged source object does not exist") from None
+            return
+        if stat.S_ISLNK(info.st_mode) or not stat.S_ISREG(info.st_mode):
+            raise DataProcessStorageError("staged source object is not a regular file")
+
+    def _ensure_directory(self, directory: Path) -> Path:
+        try:
+            relative = directory.relative_to(self._root)
+        except ValueError as exc:
+            raise DataProcessStorageError("storage path escapes the configured root") from exc
+        current = self._root
+        for component in relative.parts:
+            current = current / component
+            try:
+                current.mkdir(mode=0o700)
+            except FileExistsError:
+                pass
+            info = current.lstat()
+            if stat.S_ISLNK(info.st_mode) or not stat.S_ISDIR(info.st_mode):
+                raise DataProcessStorageError("storage path contains a symlink or non-directory")
+        return directory
+
+    def _assert_controlled_parent(self, path: Path) -> None:
+        try:
+            relative_parent = path.parent.relative_to(self._root)
+        except ValueError as exc:
+            raise DataProcessStorageError("storage path escapes the configured root") from exc
+        current = self._root
+        for component in relative_parent.parts:
+            current = current / component
+            if not current.exists():
+                continue
+            info = current.lstat()
+            if stat.S_ISLNK(info.st_mode) or not stat.S_ISDIR(info.st_mode):
+                raise DataProcessStorageError("storage path contains a symlink or non-directory")
+
+    @staticmethod
+    def _fsync_directory(directory: Path) -> None:
+        descriptor = os.open(directory, os.O_RDONLY)
+        try:
+            os.fsync(descriptor)
+        finally:
+            os.close(descriptor)
+
+    def _remove_empty_directory(self, directory: Path) -> None:
+        if directory in {self._root, self._root / ".staging"}:
+            return
+        self._assert_controlled_parent(directory / "placeholder")
+        try:
+            directory.rmdir()
+        except (FileNotFoundError, OSError):
+            return
+
+
+@lru_cache
+def get_data_process_storage() -> LocalDataProcessStorage:
+    return LocalDataProcessStorage()
+
+
+__all__ = [
+    "DataProcessStorageError",
+    "LocalDataProcessStorage",
+    "StagedSourceObject",
+    "get_data_process_storage",
+]

backend/app/modules/dataset/__init__.py

@@ -0,0 +1 @@
+"""Dataset management module."""

backend/app/modules/engine_registry/__init__.py

@@ -0,0 +1 @@
+"""Training engine registry module."""

backend/app/modules/eval/__init__.py

@@ -0,0 +1 @@
+"""Evaluation module."""

backend/app/modules/file_gateway/__init__.py

@@ -0,0 +1 @@
+"""Application-side file gateway module."""

backend/app/modules/fine_tune/__init__.py

@@ -0,0 +1 @@
+"""Fine-tuning task module."""

backend/app/modules/inference/__init__.py

@@ -0,0 +1 @@
+"""Inference and compare module."""

backend/app/modules/model/__init__.py

@@ -0,0 +1 @@
+"""Model registry module."""

backend/app/modules/project/__init__.py

@@ -0,0 +1 @@
+"""Project workspace and member module."""

backend/app/modules/retention/__init__.py

@@ -0,0 +1 @@
+"""Retention policy and cleanup module."""

backend/app/modules/system/__init__.py

@@ -0,0 +1 @@
+"""System health, metrics and logs module."""

backend/app/modules/tenant/__init__.py

@@ -0,0 +1 @@
+"""Tenant management module."""

backend/app/schemas/__init__.py

@@ -0,0 +1 @@
+"""Shared schemas package."""

backend/app/schemas/data_process.py

@@ -0,0 +1,321 @@
+from __future__ import annotations
+
+from enum import StrEnum
+from typing import Any, Literal
+
+from pydantic import BaseModel, ConfigDict, Field, field_validator, model_validator
+
+from app.modules.data_process.constants import MAX_QA_PAIRS_PER_ITEM
+
+
+def _config_value(config: dict[str, Any], snake_name: str, camel_name: str, default: Any) -> Any:
+    if snake_name in config:
+        return config[snake_name]
+    return config.get(camel_name, default)
+
+
+def _validate_process_config(config: dict[str, Any]) -> None:
+    chunk_method = _config_value(config, "chunk_method", "chunkMethod", "layout_hybrid")
+    if not isinstance(chunk_method, str) or chunk_method not in {
+        "layout_hybrid",
+        "semantic",
+        "fixed",
+    }:
+        raise ValueError("chunk_method must be one of: layout_hybrid, semantic, fixed")
+
+    semantic_percentile = _config_value(
+        config,
+        "semantic_breakpoint_percentile",
+        "semanticBreakpointPercentile",
+        95,
+    )
+    if (
+        isinstance(semantic_percentile, bool)
+        or not isinstance(semantic_percentile, int)
+        or not 1 <= semantic_percentile <= 99
+    ):
+        raise ValueError("semantic_breakpoint_percentile must be an integer in [1, 99]")
+
+    split = _config_value(config, "dataset_split", "datasetSplit", None)
+    if split is not None:
+        if not isinstance(split, dict) or set(split) != {"train", "validation", "test"}:
+            raise ValueError("dataset_split must contain train, validation and test")
+        values = list(split.values())
+        if any(isinstance(value, bool) or not isinstance(value, int) for value in values):
+            raise ValueError("dataset_split values must be integers")
+        if any(value < 0 or value > 100 for value in values) or sum(values) != 100:
+            raise ValueError("dataset_split values must be in [0, 100] and total 100")
+
+    chunk_fields = {
+        "chunk_size",
+        "chunkSize",
+        "chunk_overlap",
+        "chunkOverlap",
+        "min_chunk_size",
+        "minChunkSize",
+    }
+    if chunk_fields.intersection(config):
+        chunk_size = _config_value(config, "chunk_size", "chunkSize", 800)
+        overlap = _config_value(config, "chunk_overlap", "chunkOverlap", 100)
+        minimum = _config_value(config, "min_chunk_size", "minChunkSize", 100)
+        if any(
+            isinstance(value, bool) or not isinstance(value, int)
+            for value in (chunk_size, overlap, minimum)
+        ):
+            raise ValueError("chunk_size, chunk_overlap and min_chunk_size must be integers")
+        if not 16 <= chunk_size <= 32_768:
+            raise ValueError("chunk_size must be in [16, 32768]")
+        if overlap < 0 or overlap >= chunk_size:
+            raise ValueError("chunk_overlap must be in [0, chunk_size)")
+        if minimum <= 0 or minimum > chunk_size or overlap + minimum > chunk_size:
+            raise ValueError("min_chunk_size and chunk_overlap exceed chunk_size")
+
+    temperature = _config_value(config, "temperature", "temperature", None)
+    if temperature is not None:
+        if isinstance(temperature, bool) or not isinstance(temperature, (int, float)):
+            raise ValueError("temperature must be a number")
+        if not 0 <= float(temperature) <= 2:
+            raise ValueError("temperature must be in [0, 2]")
+
+    max_tokens = _config_value(config, "max_tokens", "maxTokens", None)
+    if max_tokens is not None:
+        if isinstance(max_tokens, bool) or not isinstance(max_tokens, int):
+            raise ValueError("max_tokens must be an integer")
+        if not 1 <= max_tokens <= 32_768:
+            raise ValueError("max_tokens must be in [1, 32768]")
+
+    for snake_name, camel_name in (
+        ("qa_pairs_per_row", "qaPairsPerRow"),
+        ("qa_pairs_per_chunk", "qaPairsPerChunk"),
+    ):
+        pairs = _config_value(config, snake_name, camel_name, None)
+        if pairs is None:
+            continue
+        if (
+            isinstance(pairs, bool)
+            or not isinstance(pairs, int)
+            or not 1 <= pairs <= MAX_QA_PAIRS_PER_ITEM
+        ):
+            raise ValueError(
+                f"{snake_name} must be an integer in [1, {MAX_QA_PAIRS_PER_ITEM}]"
+            )
+
+
+class DataProcessStatus(StrEnum):
+    pending = "pending"
+    running = "running"
+    completed = "completed"
+    failed = "failed"
+    stopped = "stopped"
+
+
+class ProcessType(StrEnum):
+    structured = "structured"
+    unstructured = "unstructured"
+    external = "external"
+
+
+class DataProcessTaskCreate(BaseModel):
+    model_config = ConfigDict(extra="forbid")
+
+    name: str = Field(min_length=1, max_length=150)
+    description: str = ""
+    process_type: ProcessType
+    source_dataset_id: str | None = None
+    config: dict[str, Any] = Field(default_factory=dict)
+
+    @field_validator("name")
+    @classmethod
+    def normalize_name(cls, value: str) -> str:
+        value = value.strip()
+        if not value:
+            raise ValueError("task name cannot be empty")
+        return value
+
+    @model_validator(mode="after")
+    def validate_config(self) -> "DataProcessTaskCreate":
+        _validate_process_config(self.config)
+        return self
+
+
+class DataProcessTaskUpdate(BaseModel):
+    model_config = ConfigDict(extra="forbid")
+
+    name: str | None = Field(default=None, min_length=1, max_length=150)
+    description: str | None = None
+    process_type: ProcessType | None = None
+    source_dataset_id: str | None = None
+    config: dict[str, Any] | None = None
+
+    @field_validator("name")
+    @classmethod
+    def normalize_name(cls, value: str | None) -> str | None:
+        if value is None:
+            return None
+        value = value.strip()
+        if not value:
+            raise ValueError("task name cannot be empty")
+        return value
+
+    @model_validator(mode="after")
+    def validate_config(self) -> "DataProcessTaskUpdate":
+        if self.config is not None:
+            _validate_process_config(self.config)
+        return self
+
+
+class DataProcessRegenerateRequest(BaseModel):
+    """以一份完整配置准备任务重新生成。
+
+    ``expected_updated_at`` 用于防止详情页的旧快照覆盖其他人刚刚
+    保存的配置。重新生成不允许改变处理类型，避免旧源文件在新解析
+    规则下被静默误用。
+    """
+
+    model_config = ConfigDict(extra="forbid")
+
+    name: str = Field(min_length=1, max_length=150)
+    description: str
+    process_type: ProcessType
+    config: dict[str, Any]
+    expected_updated_at: str = Field(min_length=1)
+
+    @field_validator("name")
+    @classmethod
+    def normalize_name(cls, value: str) -> str:
+        value = value.strip()
+        if not value:
+            raise ValueError("task name cannot be empty")
+        return value
+
+    @model_validator(mode="after")
+    def validate_config(self) -> "DataProcessRegenerateRequest":
+        _validate_process_config(self.config)
+        return self
+
+
+class PreviewBuildRequest(BaseModel):
+    model_config = ConfigDict(extra="forbid")
+
+    replace_existing: Literal[True] = True
+    source_file_ids: list[str] | None = None
+    source_file_id: str | None = None
+
+    @model_validator(mode="after")
+    def validate_source_file_selection(self) -> "PreviewBuildRequest":
+        if self.source_file_ids is not None and self.source_file_id is not None:
+            raise ValueError("source_file_id and source_file_ids cannot be used together")
+        values = self.source_file_ids
+        if values is None and self.source_file_id is not None:
+            values = [self.source_file_id]
+        if values is None:
+            return self
+        normalized = list(dict.fromkeys(str(value).strip() for value in values))
+        if not normalized or any(not value for value in normalized):
+            raise ValueError("at least one non-empty source file id is required")
+        self.source_file_ids = normalized
+        self.source_file_id = None
+        return self
+
+
+class PreviewItemCreate(BaseModel):
+    model_config = ConfigDict(extra="forbid")
+
+    source_file_id: str | None = None
+    original_content: str = ""
+    edited_content: str = ""
+    source_start: int | None = Field(default=None, ge=0)
+    source_end: int | None = Field(default=None, ge=0)
+    source_start_line: int | None = Field(default=None, ge=1)
+    source_end_line: int | None = Field(default=None, ge=1)
+
+    @model_validator(mode="after")
+    def validate_ranges(self) -> "PreviewItemCreate":
+        if self.source_start is not None and self.source_end is not None:
+            if self.source_end < self.source_start:
+                raise ValueError("source_end must be greater than or equal to source_start")
+        if self.source_start_line is not None and self.source_end_line is not None:
+            if self.source_end_line < self.source_start_line:
+                raise ValueError(
+                    "source_end_line must be greater than or equal to source_start_line"
+                )
+        return self
+
+
+class PreviewItemUpdate(BaseModel):
+    model_config = ConfigDict(extra="forbid")
+
+    edited_content: str
+    expected_updated_at: str | None = None
+
+
+class GenerateRequest(BaseModel):
+    model_config = ConfigDict(extra="forbid")
+
+    replace_existing: Literal[True] = True
+
+
+class ExternalSourceRequest(BaseModel):
+    model_config = ConfigDict(extra="forbid")
+
+    type: str = Field(min_length=1, max_length=30)
+    url: str = Field(min_length=1, max_length=2048)
+    auth_mode: Literal["none", "basic"] = "none"
+    username: str | None = Field(default=None, max_length=150)
+    password: str | None = Field(default=None, max_length=500)
+    limit: int = Field(default=1000, ge=1, le=100_000)
+
+
+class ExternalPullRequest(ExternalSourceRequest):
+    query: str | None = Field(default=None, max_length=20_000)
+    file_name: str = Field(default="external-data.jsonl", min_length=1, max_length=255)
+
+    @field_validator("file_name")
+    @classmethod
+    def validate_file_name(cls, value: str) -> str:
+        name = value.strip()
+        if not name.lower().endswith((".jsonl", ".ndjson")):
+            raise ValueError("external pull file_name must end with .jsonl or .ndjson")
+        return name
+
+
+class ResultUpdate(BaseModel):
+    model_config = ConfigDict(extra="forbid")
+
+    instruction: str | None = None
+    input: str | None = None
+    output: str | None = None
+    expected_updated_at: str | None = None
+
+
+class DatasetSplit(BaseModel):
+    model_config = ConfigDict(extra="forbid")
+
+    train: int = Field(default=80, ge=0, le=100)
+    validation: int = Field(default=10, ge=0, le=100)
+    test: int = Field(default=10, ge=0, le=100)
+
+    @model_validator(mode="after")
+    def validate_total(self) -> "DatasetSplit":
+        if self.train + self.validation + self.test != 100:
+            raise ValueError("dataset split must total 100")
+        return self
+
+
+class PublishRequest(BaseModel):
+    model_config = ConfigDict(extra="forbid")
+
+    dataset_name: str = Field(min_length=1, max_length=150)
+    dataset_type: Literal["train", "test", "eval", "val", "other"] = "train"
+    storage_type: Literal["local"] = "local"
+    split: DatasetSplit = Field(default_factory=DatasetSplit)
+    format: Literal["alpaca_jsonl", "jsonl"] = "alpaca_jsonl"
+    description: str = ""
+
+    @field_validator("dataset_name")
+    @classmethod
+    def normalize_dataset_name(cls, value: str) -> str:
+        value = value.strip()
+        if not value:
+            raise ValueError("dataset name cannot be empty")
+        return value

backend/app/services/__init__.py

@@ -0,0 +1 @@
+"""Cross-module services package."""

backend/app/workers/__init__.py

@@ -0,0 +1 @@
+"""Background workers package."""

backend/app/workers/compute_poller.py

@@ -0,0 +1,31 @@
+from __future__ import annotations
+
+import asyncio
+
+from app.core.config import get_settings
+from app.core.logging import get_logger
+from app.modules.compute_gateway.sync import poll_compute_jobs_once
+
+
+logger = get_logger(__name__)
+
+
+async def run_compute_poller() -> None:
+    settings = get_settings()
+    if settings.compute_mode == "simulator" or settings.compute_status_sync_mode != "polling":
+        logger.info("compute poller disabled", extra={"compute_mode": settings.compute_mode})
+        return
+
+    interval = max(3, settings.compute_poll_interval_seconds)
+    logger.info("compute poller started", extra={"interval_seconds": interval})
+    while True:
+        try:
+            result = await poll_compute_jobs_once()
+            if result["synced"] or result["failed"]:
+                logger.info("compute jobs polled", extra={"result": result})
+        except asyncio.CancelledError:
+            logger.info("compute poller stopped")
+            raise
+        except Exception as exc:  # noqa: BLE001 - keep background polling alive
+            logger.exception("compute poller failed", extra={"error": str(exc)})
+        await asyncio.sleep(interval)

backend/pyproject.toml

@@ -0,0 +1,40 @@
+[project]
+name = "yg-ft-backend"
+version = "0.1.0"
+description = "Backend service for the model fine-tuning platform"
+requires-python = ">=3.12"
+dependencies = [
+  "fastapi>=0.111.0",
+  "uvicorn[standard]>=0.30.0",
+  "python-multipart>=0.0.9",
+  "pydantic>=2.7.0",
+  "sqlalchemy>=2.0.30",
+  "psycopg[binary]>=3.2.1",
+  "alembic>=1.13.1",
+  "redis>=5.0.4",
+  "httpx>=0.27.0",
+  "PyJWT>=2.8.0",
+  "passlib[bcrypt]>=1.7.4",
+  "python-dotenv>=1.0.1",
+  "pypdf[crypto]>=5.0.0",
+  "python-docx>=1.1.2",
+  "openpyxl>=3.1.5",
+  "python-pptx>=1.0.2",
+  "llama-index-core==0.14.23",
+  "llama-index-embeddings-huggingface==0.6.1",
+  "docling==2.115.0",
+  "tiktoken>=0.7.0",
+]
+
+[project.optional-dependencies]
+dev = [
+  "pytest>=8.2.0",
+  "ruff>=0.5.0",
+]
+
+[tool.ruff]
+line-length = 100
+target-version = "py312"
+
+[tool.pytest.ini_options]
+testpaths = ["tests"]

backend/requirements.txt

@@ -0,0 +1,20 @@
+fastapi>=0.111.0
+uvicorn[standard]>=0.30.0
+python-multipart>=0.0.9
+pydantic>=2.7.0
+sqlalchemy>=2.0.30
+psycopg[binary]>=3.2.1
+alembic>=1.13.1
+redis>=5.0.4
+httpx>=0.27.0
+PyJWT>=2.8.0
+passlib[bcrypt]>=1.7.4
+python-dotenv>=1.0.1
+pypdf[crypto]>=5.0.0
+python-docx>=1.1.2
+openpyxl>=3.1.5
+python-pptx>=1.0.2
+llama-index-core==0.14.23
+llama-index-embeddings-huggingface==0.6.1
+docling==2.115.0
+tiktoken>=0.7.0

backend/tests/test_data_process_algorithms.py

@@ -0,0 +1,772 @@
+from __future__ import annotations
+
+import io
+import json
+import xml.etree.ElementTree as ET
+import zipfile
+from datetime import datetime
+
+import pytest
+from docx import Document
+from openpyxl import Workbook
+from pptx import Presentation
+from pptx.util import Inches
+from pypdf import PdfWriter
+
+from app.modules.data_process.algorithms import (
+    PdfPageText,
+    content_quality_flags,
+    desensitize_pii,
+    desensitize_structured_record,
+    detect_document_structure,
+    detect_pdf_document_noise,
+    detect_text_format,
+    extract_pdf_page_texts,
+    extract_structured_records,
+    generate_standard_records,
+    is_near_duplicate,
+    merge_short_blocks,
+    normalize_text,
+    parse_text_content,
+    preprocess_structured_records,
+    record_fingerprint,
+    remove_document_noise,
+    score_quality,
+    stable_split,
+    stable_split_assignments,
+)
+
+
+def _pdf_page_texts(*texts: str) -> tuple[PdfPageText, ...]:
+    pages: list[PdfPageText] = []
+    offset = 0
+    for page_number, text in enumerate(texts, start=1):
+        normalized = normalize_text(text)
+        if pages:
+            offset += 2
+        start = offset
+        offset += len(normalized)
+        pages.append(
+            PdfPageText(
+                page_number=page_number,
+                text=normalized,
+                source_start=start,
+                source_end=offset,
+            )
+        )
+    return tuple(pages)
+
+
+def _minimal_pdf(text: str = "Hello PDF") -> bytes:
+    stream = f"BT /F1 12 Tf 72 720 Td ({text}) Tj ET".encode("ascii")
+    objects = [
+        b"<< /Type /Catalog /Pages 2 0 R >>",
+        b"<< /Type /Pages /Kids [3 0 R] /Count 1 >>",
+        (
+            b"<< /Type /Page /Parent 2 0 R /MediaBox [0 0 612 792] "
+            b"/Resources << /Font << /F1 5 0 R >> >> /Contents 4 0 R >>"
+        ),
+        b"<< /Length " + str(len(stream)).encode("ascii") + b" >>\nstream\n"
+        + stream
+        + b"\nendstream",
+        b"<< /Type /Font /Subtype /Type1 /BaseFont /Helvetica >>",
+    ]
+    result = bytearray(b"%PDF-1.4\n%\xe2\xe3\xcf\xd3\n")
+    offsets = [0]
+    for object_number, value in enumerate(objects, start=1):
+        offsets.append(len(result))
+        result.extend(f"{object_number} 0 obj\n".encode("ascii"))
+        result.extend(value)
+        result.extend(b"\nendobj\n")
+    xref_offset = len(result)
+    result.extend(f"xref\n0 {len(objects) + 1}\n".encode("ascii"))
+    result.extend(b"0000000000 65535 f \n")
+    for offset in offsets[1:]:
+        result.extend(f"{offset:010d} 00000 n \n".encode("ascii"))
+    result.extend(
+        (
+            f"trailer\n<< /Size {len(objects) + 1} /Root 1 0 R >>\n"
+            f"startxref\n{xref_offset}\n%%EOF\n"
+        ).encode("ascii")
+    )
+    return bytes(result)
+
+
+def _aes_encrypted_pdf(*, user_password: str) -> bytes:
+    writer = PdfWriter(clone_from=io.BytesIO(_minimal_pdf()))
+    writer.encrypt(
+        user_password=user_password,
+        owner_password="owner-secret",
+        algorithm="AES-256",
+    )
+    output = io.BytesIO()
+    writer.write(output)
+    return output.getvalue()
+
+
+def _docx_bytes() -> bytes:
+    document = Document()
+    document.add_heading("服务说明", level=1)
+    document.add_paragraph("这是 DOCX 正文。")
+    table = document.add_table(rows=1, cols=2)
+    table.cell(0, 0).text = "字段"
+    table.cell(0, 1).text = "内容"
+    output = io.BytesIO()
+    document.save(output)
+    return output.getvalue()
+
+
+def _xlsx_bytes() -> bytes:
+    workbook = Workbook()
+    worksheet = workbook.active
+    worksheet.title = "数据"
+    worksheet.append(["name", "score", "created_at"])
+    worksheet.append(["Alice", 95, datetime(2026, 7, 23, 10, 30)])
+    worksheet.append(["Bob", 88, datetime(2026, 7, 24, 9, 0)])
+    output = io.BytesIO()
+    workbook.save(output)
+    workbook.close()
+    return output.getvalue()
+
+
+def _xlsx_with_worksheet_relationship(
+    raw: bytes,
+    target: str,
+    *,
+    target_mode: str | None = None,
+) -> bytes:
+    member_name = "xl/_rels/workbook.xml.rels"
+    source = io.BytesIO(raw)
+    output = io.BytesIO()
+    with zipfile.ZipFile(source) as original, zipfile.ZipFile(output, "w") as rewritten:
+        for member in original.infolist():
+            content = original.read(member.filename)
+            if member.filename == member_name:
+                root = ET.fromstring(content)
+                worksheet_relationship = next(
+                    element
+                    for element in root
+                    if element.attrib.get("Type", "").endswith("/worksheet")
+                )
+                worksheet_relationship.set("Target", target)
+                if target_mode is None:
+                    worksheet_relationship.attrib.pop("TargetMode", None)
+                else:
+                    worksheet_relationship.set("TargetMode", target_mode)
+                content = ET.tostring(root, encoding="utf-8", xml_declaration=True)
+            rewritten.writestr(member, content)
+    return output.getvalue()
+
+
+def _pptx_bytes() -> bytes:
+    presentation = Presentation()
+    slide = presentation.slides.add_slide(presentation.slide_layouts[6])
+    text_box = slide.shapes.add_textbox(Inches(1), Inches(1), Inches(6), Inches(1))
+    text_box.text = "PPTX 页面正文"
+    output = io.BytesIO()
+    presentation.save(output)
+    return output.getvalue()
+
+
+def test_parse_utf8_json_jsonl_csv_markdown_and_txt() -> None:
+    parsed_json = parse_text_content(
+        b'\xef\xbb\xbf{"data":[{"name":"\xe5\xbc\xa0\xe4\xb8\x89"}]}',
+        filename="records.json",
+    )
+    assert parsed_json.format == "json"
+    assert parsed_json.records == ({"name": "张三"},)
+
+    parsed_jsonl = parse_text_content('{"id":1}\n\n{"id":2}\n', filename="records.jsonl")
+    assert parsed_jsonl.format == "jsonl"
+    assert parsed_jsonl.records == ({"id": 1}, {"id": 2})
+
+    parsed_csv = parse_text_content("name,answer\r\nAlice,yes\r\nBob,no", filename="records.csv")
+    assert parsed_csv.format == "csv"
+    assert parsed_csv.text == "name,answer\nAlice,yes\nBob,no"
+    assert parsed_csv.records[1] == {"name": "Bob", "answer": "no"}
+
+    parsed_markdown = parse_text_content("# 标题\n\n正文", filename="README.md")
+    assert parsed_markdown.format == "markdown"
+    assert parsed_markdown.records == ()
+
+    parsed_txt = parse_text_content("普通文本", filename="note.txt")
+    assert parsed_txt.format == "txt"
+    assert parsed_txt.text == "普通文本"
+
+
+def test_parse_pdf_docx_xlsx_and_pptx() -> None:
+    parsed_pdf = parse_text_content(_minimal_pdf(), filename="manual.pdf")
+    assert parsed_pdf.format == "pdf"
+    assert "Hello PDF" in parsed_pdf.text
+    assert parsed_pdf.records == ()
+
+    pdf_pages = extract_pdf_page_texts(_minimal_pdf())
+    assert len(pdf_pages) == 1
+    assert pdf_pages[0].page_number == 1
+    assert pdf_pages[0].text == "Hello PDF"
+    assert pdf_pages[0].source_start == 0
+    assert pdf_pages[0].source_end == len(parsed_pdf.text)
+
+    parsed_docx = parse_text_content(_docx_bytes(), filename="manual.docx")
+    assert parsed_docx.format == "docx"
+    assert "服务说明" in parsed_docx.text
+    assert "这是 DOCX 正文。" in parsed_docx.text
+    assert "字段\t内容" in parsed_docx.text
+    assert parsed_docx.records == ()
+
+    parsed_xlsx = parse_text_content(_xlsx_bytes(), filename="records.xlsx")
+    assert parsed_xlsx.format == "xlsx"
+    assert parsed_xlsx.records == (
+        {"name": "Alice", "score": 95, "created_at": "2026-07-23T10:30:00"},
+        {"name": "Bob", "score": 88, "created_at": "2026-07-24T09:00:00"},
+    )
+    assert json.loads(parsed_xlsx.text.splitlines()[0]) == parsed_xlsx.records[0]
+
+    parsed_pptx = parse_text_content(_pptx_bytes(), filename="slides.pptx")
+    assert parsed_pptx.format == "pptx"
+    assert parsed_pptx.text == "PPTX 页面正文"
+    assert parsed_pptx.records == ()
+
+
+def test_pdf_document_noise_removes_headers_page_numbers_and_toc_safely() -> None:
+    pages = _pdf_page_texts(
+        """
+        远光制度文件 文件编码 2024
+        秘密等级 商密【中】
+        第 1 页 共 5 页
+        正文第一页，关于适用范围的说明。
+        业务提示保留
+        第一页补充说明甲
+        第一页补充说明乙
+        第一页补充说明丙
+        """,
+        """
+        远光制度文件 文件编码 2024
+        秘密等级 商密【中】
+        第 2 页 共 5 页
+        目 录
+        第一章 总则........3
+        第二章 报销申请........4
+        第三章 附则........5
+        """,
+        """
+        远光制度文件 文件编码 2024
+        秘密等级 商密【中】
+        第 3 页 共 5 页
+        1.1 管理要求........6
+        1.2 审批职责 7
+        1.3 费用标准........8
+        1.4 例外处理........9
+        """,
+        """
+        远光制度文件 文件编码 2024
+        秘密等级 商密【中】
+        第 4 页 共 5 页
+        正文中可以说“请参见第 3 页说明”，不应误删。
+        第 99 页 共 100 页
+        系统可用率........99.9%
+        业务提示保留
+        第四页补充说明甲
+        第四页补充说明乙
+        第四页补充说明丙
+        """,
+        """
+        远光制度文件 文件编码 2024
+        秘密等级 商密【中】
+        第 5 页 共 5 页
+        本办法自发布之日起施行。
+        业务提示保留
+        第五页补充说明甲
+        第五页补充说明乙
+        第五页补充说明丙
+        """,
+    )
+    source = "\n\n".join(page.text for page in pages)
+
+    spans = detect_pdf_document_noise(pages)
+    cleaned = remove_document_noise(source, spans)
+
+    assert {span.kind for span in spans} == {
+        "page_number",
+        "repeated_margin",
+        "table_of_contents",
+    }
+    assert "远光制度文件" not in cleaned
+    assert "商密【中】" not in cleaned
+    assert "第 1 页 共 5 页" not in cleaned
+    assert "第一章 总则" not in cleaned
+    assert "1.2 审批职责 7" not in cleaned
+    assert "请参见第 3 页说明" in cleaned
+    assert "第 99 页 共 100 页" in cleaned
+    assert "系统可用率........99.9%" in cleaned
+    assert cleaned.count("业务提示保留") == 3
+
+
+def test_pdf_document_noise_does_not_infer_repeated_margins_for_short_documents() -> None:
+    pages = _pdf_page_texts(
+        "公司内部文件\n正文 A",
+        "公司内部文件\n正文 B",
+    )
+
+    spans = detect_pdf_document_noise(pages)
+
+    assert not any(span.kind == "repeated_margin" for span in spans)
+
+
+def test_xlsx_merged_multilevel_headers_are_flattened_without_losing_columns() -> None:
+    workbook = Workbook()
+    worksheet = workbook.active
+    worksheet.merge_cells("A1:A2")
+    worksheet.merge_cells("B1:C1")
+    worksheet["A1"] = "地区"
+    worksheet["B1"] = "销售"
+    worksheet["B2"] = "Q1"
+    worksheet["C2"] = "Q2"
+    worksheet.append(["华东", 100, 120])
+    output = io.BytesIO()
+    workbook.save(output)
+    workbook.close()
+
+    parsed = parse_text_content(output.getvalue(), filename="sales.xlsx")
+    assert parsed.records == ({"地区": "华东", "销售.Q1": 100, "销售.Q2": 120},)
+
+
+def test_xlsx_header_inference_skips_more_than_eight_merged_report_titles() -> None:
+    workbook = Workbook()
+    worksheet = workbook.active
+    for row_number in range(1, 13):
+        worksheet.merge_cells(
+            start_row=row_number,
+            start_column=1,
+            end_row=row_number,
+            end_column=4,
+        )
+        worksheet.cell(row_number, 1, f"报表说明 {row_number}")
+    worksheet.append(["姓名", "部门", "得分", "日期"])
+    worksheet.append(["张三", "研发", 95, "2026-07-23"])
+    output = io.BytesIO()
+    workbook.save(output)
+    workbook.close()
+
+    parsed = parse_text_content(output.getvalue(), filename="report.xlsx")
+    assert parsed.records == (
+        {"姓名": "张三", "部门": "研发", "得分": 95, "日期": "2026-07-23"},
+    )
+
+
+def test_xlsx_header_inference_ignores_continuous_body_merges() -> None:
+    workbook = Workbook()
+    worksheet = workbook.active
+    worksheet.append(["类别", "名称", "数量"])
+    worksheet.append(["水果", "苹果", 10])
+    worksheet.append([None, "香蕉", 12])
+    worksheet.append(["蔬菜", "白菜", 8])
+    worksheet.append([None, "萝卜", 9])
+    worksheet.merge_cells("A2:A3")
+    worksheet.merge_cells("A4:A5")
+    output = io.BytesIO()
+    workbook.save(output)
+    workbook.close()
+
+    parsed = parse_text_content(output.getvalue(), filename="inventory.xlsx")
+    assert parsed.records == (
+        {"类别": "水果", "名称": "苹果", "数量": 10},
+        {"类别": "", "名称": "香蕉", "数量": 12},
+        {"类别": "蔬菜", "名称": "白菜", "数量": 8},
+        {"类别": "", "名称": "萝卜", "数量": 9},
+    )
+
+
+def test_xlsx_header_inference_supports_title_and_two_header_levels() -> None:
+    workbook = Workbook()
+    worksheet = workbook.active
+    worksheet.merge_cells("A1:C1")
+    worksheet["A1"] = "区域销售报表"
+    worksheet["A2"] = "统计日期"
+    worksheet["B2"] = "2026-07-23"
+    worksheet.merge_cells("A4:A5")
+    worksheet.merge_cells("B4:C4")
+    worksheet["A4"] = "地区"
+    worksheet["B4"] = "销售"
+    worksheet["B5"] = "Q1"
+    worksheet["C5"] = "Q2"
+    worksheet.append(["华南", 88, 92])
+    output = io.BytesIO()
+    workbook.save(output)
+    workbook.close()
+
+    parsed = parse_text_content(output.getvalue(), filename="two-level.xlsx")
+    assert parsed.records == (
+        {"地区": "华南", "销售.Q1": 88, "销售.Q2": 92},
+    )
+
+
+def test_xlsx_header_inference_supports_title_and_three_header_levels() -> None:
+    workbook = Workbook()
+    worksheet = workbook.active
+    worksheet.merge_cells("A1:D1")
+    worksheet["A1"] = "年度销售分析报告"
+    worksheet["A2"] = "统计日期"
+    worksheet["B2"] = "2026-07-23"
+    worksheet.merge_cells("A4:A6")
+    worksheet.merge_cells("B4:D4")
+    worksheet.merge_cells("B5:C5")
+    worksheet.merge_cells("D5:D6")
+    worksheet["A4"] = "地区"
+    worksheet["B4"] = "销售"
+    worksheet["B5"] = "国内"
+    worksheet["D5"] = "海外"
+    worksheet["B6"] = "Q1"
+    worksheet["C6"] = "Q2"
+    worksheet.append(["华东", 100, 120, 80])
+    output = io.BytesIO()
+    workbook.save(output)
+    workbook.close()
+
+    parsed = parse_text_content(output.getvalue(), filename="three-level.xlsx")
+    assert parsed.records == (
+        {
+            "地区": "华东",
+            "销售.国内.Q1": 100,
+            "销售.国内.Q2": 120,
+            "销售.海外": 80,
+        },
+    )
+
+
+def test_xlsx_header_inference_keeps_an_ordinary_single_header_row() -> None:
+    parsed = parse_text_content(_xlsx_bytes(), filename="ordinary.xlsx")
+    assert tuple(parsed.records[0]) == ("name", "score", "created_at")
+    assert len(parsed.records) == 2
+
+
+@pytest.mark.parametrize(
+    "target",
+    [
+        "./worksheets/../worksheets/sheet1.xml",
+        "./worksheets/%2e%2e/worksheets/sheet1.xml",
+        "../xl/worksheets/sheet1.xml",
+        "/xl/worksheets/./sheet1.xml",
+    ],
+)
+def test_xlsx_worksheet_relationship_allows_safe_dot_segments(target: str) -> None:
+    raw = _xlsx_with_worksheet_relationship(_xlsx_bytes(), target)
+    parsed = parse_text_content(raw, filename="records.xlsx")
+    assert parsed.records[0]["name"] == "Alice"
+
+
+@pytest.mark.parametrize(
+    "target",
+    [
+        "../../outside.xml",
+        "worksheets\\sheet1.xml",
+        "%2e%2e/%2e%2e/outside.xml",
+        "%252e%252e/%252e%252e/outside.xml",
+        "https://example.com/sheet1.xml",
+    ],
+)
+def test_xlsx_worksheet_relationship_rejects_path_traversal(target: str) -> None:
+    raw = _xlsx_with_worksheet_relationship(_xlsx_bytes(), target)
+    with pytest.raises(ValueError, match="unsafe worksheet path"):
+        parse_text_content(raw, filename="unsafe.xlsx")
+
+
+def test_xlsx_worksheet_relationship_rejects_external_and_missing_targets() -> None:
+    external = _xlsx_with_worksheet_relationship(
+        _xlsx_bytes(),
+        "https://example.com/sheet1.xml",
+        target_mode="External",
+    )
+    with pytest.raises(ValueError, match="external relationship"):
+        parse_text_content(external, filename="external.xlsx")
+
+    missing = _xlsx_with_worksheet_relationship(
+        _xlsx_bytes(),
+        "worksheets/missing.xml",
+    )
+    with pytest.raises(ValueError, match="target does not exist"):
+        parse_text_content(missing, filename="missing.xlsx")
+
+
+@pytest.mark.parametrize(
+    ("filename", "replacement"),
+    [
+        ("legacy.doc", ".docx"),
+        ("legacy.xls", ".xlsx"),
+        ("legacy.ppt", ".pptx"),
+    ],
+)
+def test_legacy_office_formats_require_conversion(filename: str, replacement: str) -> None:
+    with pytest.raises(ValueError, match=rf"convert the file to \{replacement}"):
+        parse_text_content(b"legacy", filename=filename)
+
+
+def test_office_zip_bomb_and_invalid_pdf_are_rejected_before_parsing() -> None:
+    archive = io.BytesIO()
+    with zipfile.ZipFile(archive, "w", compression=zipfile.ZIP_DEFLATED) as package:
+        package.writestr("[Content_Types].xml", "<Types/>")
+        package.writestr("word/document.xml", b"A" * (2 * 1024 * 1024))
+    with pytest.raises(ValueError, match="unsafe compression ratio"):
+        parse_text_content(archive.getvalue(), filename="unsafe.docx")
+
+    active_xml = io.BytesIO()
+    with zipfile.ZipFile(active_xml, "w") as package:
+        package.writestr("[Content_Types].xml", "<Types/>")
+        package.writestr(
+            "word/document.xml",
+            '<!DOCTYPE document [<!ENTITY xxe SYSTEM "file:///etc/passwd">]><document/>',
+        )
+    with pytest.raises(ValueError, match="unsupported active XML"):
+        parse_text_content(active_xml.getvalue(), filename="active.docx")
+
+    with pytest.raises(ValueError, match="missing PDF header"):
+        parse_text_content(b"not a pdf", filename="broken.pdf")
+
+    blank_pdf = io.BytesIO()
+    blank_writer = PdfWriter()
+    blank_writer.add_blank_page(width=612, height=792)
+    blank_writer.write(blank_pdf)
+    with pytest.raises(ValueError, match="scanned PDF requires OCR"):
+        parse_text_content(blank_pdf.getvalue(), filename="scanned.pdf")
+
+    aes_pdf_without_open_password = parse_text_content(
+        _aes_encrypted_pdf(user_password=""),
+        filename="aes-no-password.pdf",
+    )
+    assert "Hello PDF" in aes_pdf_without_open_password.text
+
+    with pytest.raises(ValueError, match="password-protected PDF files are not supported"):
+        parse_text_content(
+            _aes_encrypted_pdf(user_password="secret"),
+            filename="aes-password.pdf",
+        )
+
+
+def test_invalid_utf8_and_malformed_structured_content_fail_loudly() -> None:
+    with pytest.raises(ValueError, match="not valid UTF-8"):
+        parse_text_content(b"\xff\xfe", filename="broken.txt")
+    with pytest.raises(ValueError, match="invalid JSONL at line 2"):
+        extract_structured_records('{"id":1}\nnot-json', "jsonl")
+    with pytest.raises(ValueError, match="more fields"):
+        extract_structured_records("a,b\n1,2,3", "csv")
+
+
+def test_detect_format_from_content_and_normalize() -> None:
+    assert detect_text_format(text='{"id":1}\n{"id":2}') == "jsonl"
+    assert detect_text_format(text="# Heading\ntext") == "markdown"
+    assert detect_text_format(text="a,b\n1,2") == "csv"
+    assert normalize_text("\ufeffＡＢＣ  \r\n第二\x00行\u200b\t \r\n") == "ABC\n第二行"
+
+
+def test_extract_json_scalar_and_nested_values_are_stable() -> None:
+    assert extract_structured_records("[1, true, null]", "json") == [
+        {"value": 1},
+        {"value": True},
+        {"value": None},
+    ]
+    result = extract_structured_records(
+        json.dumps({"items": [{"text": "  内容  "}], "ignored": 1}, ensure_ascii=False),
+        "json",
+    )
+    assert result == [{"text": "内容"}]
+
+
+def test_desensitize_pii_returns_masked_text_and_counts() -> None:
+    source = "邮箱 a.user+tag@example.com，手机 +86 13800138000，身份证 11010519491231002X。"
+    masked, counts = desensitize_pii(source)
+    assert masked == "邮箱 [EMAIL]，手机 [PHONE]，身份证 [ID_CARD]。"
+    assert counts == {"email": 1, "phone": 1, "id_card": 1, "total": 3}
+
+
+def test_every_structured_preprocess_option_has_independent_behavior() -> None:
+    clean_source = [
+        {"id": "1", "name": "有效", "empty_column": ""},
+        {"id": "", "name": "缺少关键字段", "empty_column": ""},
+        {"id": "2", "name": "有效", "empty_column": ""},
+    ]
+    assert preprocess_structured_records(clean_source, []) == clean_source
+    assert preprocess_structured_records(clean_source, ["clean_invalid"]) == [
+        {"id": "1", "name": "有效"},
+        {"id": "2", "name": "有效"},
+    ]
+
+    nested = [{"id": 1, "profile": {"name": "张三", "level": 2}}]
+    assert "profile" in preprocess_structured_records(nested, [])[0]
+    assert preprocess_structured_records(nested, ["detect_structure"])[0] == {
+        "id": 1,
+        "profile.name": "张三",
+        "profile.level": 2,
+    }
+
+    duplicates = [
+        {"customer_id": "C-1", "value": "first"},
+        {"customer_id": "C-1", "value": "updated"},
+        {"customer_id": "", "value": "blank-one"},
+        {"customer_id": "", "value": "blank-two"},
+    ]
+    assert len(preprocess_structured_records(duplicates, [])) == 4
+    deduplicated = preprocess_structured_records(duplicates, ["deduplicate"])
+    assert [record["value"] for record in deduplicated] == [
+        "first",
+        "blank-one",
+        "blank-two",
+    ]
+
+    unnormalized = [{" User Name ": "ＡＢＣ\r\n第二行"}]
+    assert preprocess_structured_records(unnormalized, []) == unnormalized
+    assert preprocess_structured_records(unnormalized, ["normalize_format"]) == [
+        {"user_name": "ABC\n第二行"}
+    ]
+
+    anomaly_source = [
+        {"id": 10_000 + index, "amount": amount, "text": "正常内容"}
+        for index, amount in enumerate((10, 10, 11, 11, 12, 12, 13, 1000))
+    ]
+    assert len(preprocess_structured_records(anomaly_source, [])) == 8
+    filtered = preprocess_structured_records(anomaly_source, ["filter_anomaly"])
+    assert len(filtered) == 7
+    assert all(record["amount"] != 1000 for record in filtered)
+    assert max(record["id"] for record in filtered) > 10_000
+
+    sensitive = [{"姓名": "张三", "phone": "13800138000", "email": "a@b.com"}]
+    assert preprocess_structured_records(sensitive, []) == sensitive
+    masked = preprocess_structured_records(sensitive, ["desensitize"])[0]
+    assert masked == {"姓名": "[NAME]", "phone": "[PHONE]", "email": "[EMAIL]"}
+
+
+def test_structured_desensitization_counts_and_document_helpers() -> None:
+    masked, counts = desensitize_structured_record(
+        {"联系人姓名": "李四", "说明": "邮箱 user@example.com，手机 13900139000"}
+    )
+    assert masked == {
+        "联系人姓名": "[NAME]",
+        "说明": "邮箱 [EMAIL]，手机 [PHONE]",
+    }
+    assert counts == {"email": 1, "phone": 1, "id_card": 0, "name": 1, "total": 3}
+
+    structure = detect_document_structure(
+        "# 第一章\n正文\n\n## 细节\n- 项目一\n- 项目二\n\n```python\nprint(1)\n```"
+    )
+    assert [heading.title for heading in structure.headings] == ["第一章", "细节"]
+    assert structure.list_block_count == 1
+    assert structure.code_block_count == 1
+    assert merge_short_blocks(["短一", "短二", "这是一段足够长的正文内容"], min_token_count=4)
+    assert "mojibake" in content_quality_flags("正常文字锟斤拷内容", min_chars=0, min_tokens=0)
+    assert is_near_duplicate(
+        "alpha beta gamma delta epsilon zeta eta theta iota kappa lambda mu nu xi omicron",
+        "alpha beta gamma, delta epsilon zeta eta theta iota kappa lambda mu nu xi omicron",
+        similarity_threshold=0.92,
+        max_hamming_distance=2,
+    )
+
+
+def test_quality_scoring_covers_all_dimensions_and_duplicates() -> None:
+    valid = {
+        "instruction": "如何修改收货地址？",
+        "input": "订单尚未发货",
+        "output": "可以在订单详情页申请修改收货地址。",
+    }
+    source = "订单尚未发货时，可以在订单详情页申请修改收货地址。"
+    first_score = score_quality(valid, min_output_length=10, source_content=source)
+    assert first_score.is_valid
+    assert first_score.completeness == 100
+    assert first_score.length == 100
+    assert first_score.readability >= 90
+    assert first_score.relevance >= 70
+    assert first_score.duplicate == 100
+
+    duplicate_score = score_quality(valid, known_fingerprints={first_score.fingerprint})
+    assert duplicate_score.duplicate == 0
+    assert "duplicate_record" in duplicate_score.flags
+
+    unrelated_score = score_quality(
+        valid,
+        min_output_length=10,
+        source_content="量子计算使用量子比特处理信息。",
+    )
+    assert unrelated_score.relevance < first_score.relevance
+    assert "low_source_relevance" in unrelated_score.flags
+
+    invalid_score = score_quality({"instruction": "", "output": "短"}, min_output_length=10)
+    assert not invalid_score.is_valid
+    assert {"missing_instruction", "output_too_short"}.issubset(invalid_score.flags)
+    assert record_fingerprint(valid) == record_fingerprint(dict(reversed(list(valid.items()))))
+
+
+def test_stable_split_is_reproducible_and_validates_ratios() -> None:
+    first = stable_split("record-42", seed="task-1")
+    assert stable_split("record-42", seed="task-1") == first
+    assert first in {"train", "validation", "test"}
+    assert stable_split("record-42", {"train": 100, "validation": 0, "test": 0}) == "train"
+    with pytest.raises(ValueError, match="sum to 100"):
+        stable_split("record", {"train": 80, "validation": 10, "test": 9})
+
+
+def test_stable_split_assignments_use_exact_deterministic_quotas() -> None:
+    values = [f"record-{index}" for index in range(28)]
+    first = stable_split_assignments(values, seed="task-1")
+    second = stable_split_assignments(values, seed="task-1")
+
+    assert first == second
+    assert first.count("train") == 22
+    assert first.count("validation") == 3
+    assert first.count("test") == 3
+
+
+def test_generate_standard_records_supports_json_qa_and_stable_variants() -> None:
+    previews = [
+        {
+            "id": "preview-json",
+            "edited_content": json.dumps(
+                {"instruction": "问题", "input": "上下文", "output": "答案"},
+                ensure_ascii=False,
+            ),
+        },
+        {"id": "preview-qa", "editedContent": "问：如何操作？\n答：按步骤操作。"},
+    ]
+    records = generate_standard_records(
+        previews,
+        qa_pairs_per_item=2,
+        semantic_enrichment=True,
+        split={"train": 100, "validation": 0, "test": 0},
+        split_seed="task-1",
+    )
+    assert len(records) == 4
+    assert records[0]["instruction"] == "问题"
+    assert records[0]["input"] == "上下文"
+    assert records[0]["output"] == "答案"
+    assert records[1]["instruction"].endswith("问题")
+    assert records[2]["instruction"] == "如何操作?"
+    assert records[2]["output"] == "按步骤操作。"
+    assert all(record["status"] == "valid" for record in records)
+    assert all(record["split"] == "train" for record in records)
+    assert records == generate_standard_records(
+        previews,
+        qa_pairs_per_item=2,
+        semantic_enrichment=True,
+        split={"train": 100, "validation": 0, "test": 0},
+        split_seed="task-1",
+    )
+
+
+def test_generate_standard_records_supports_fifty_unique_semantic_variants() -> None:
+    records = generate_standard_records(
+        [{"id": "preview-50", "edited_content": "问：如何操作？\n答：按步骤操作。"}],
+        qa_pairs_per_item=50,
+        semantic_enrichment=True,
+        split={"train": 100, "validation": 0, "test": 0},
+        split_seed="task-50",
+    )
+
+    assert len(records) == 50
+    assert len({record["id"] for record in records}) == 50
+    assert len({record["instruction"] for record in records}) == 50
+    assert all(record["status"] == "valid" for record in records)
+
+
+@pytest.mark.parametrize("qa_pairs_per_item", [0, 51])
+def test_generate_standard_records_rejects_out_of_range_count(
+    qa_pairs_per_item: int,
+) -> None:
+    with pytest.raises(ValueError, match=r"\[1, 50\]"):
+        generate_standard_records([], qa_pairs_per_item=qa_pairs_per_item)

backend/tests/test_data_process_generation.py

@@ -0,0 +1,269 @@
+from __future__ import annotations
+
+import json
+
+import httpx
+import pytest
+
+from app.modules.data_process.generation import (
+    ModelGenerationError,
+    chat_completions_url,
+    generate_model_records,
+)
+
+
+def test_chat_completions_url_accepts_host_base_and_complete_url() -> None:
+    assert chat_completions_url("www.caoxiaozhu.com") == (
+        "https://www.caoxiaozhu.com/v1/chat/completions"
+    )
+    assert chat_completions_url("https://model.example/v1") == (
+        "https://model.example/v1/chat/completions"
+    )
+    complete = "https://model.example/openai/v1/chat/completions"
+    assert chat_completions_url(complete) == complete
+
+
+def test_generate_model_records_uses_prompt_auth_and_stable_split() -> None:
+    requests: list[httpx.Request] = []
+    progress_updates: list[tuple[int, int]] = []
+
+    def handler(request: httpx.Request) -> httpx.Response:
+        requests.append(request)
+        payload = json.loads(request.content)
+        assert payload["model"] == "qwen-plus"
+        assert payload["response_format"] == {"type": "json_object"}
+        assert "客户反馈页面加载慢" in payload["messages"][1]["content"]
+        return httpx.Response(
+            200,
+            json={
+                "choices": [
+                    {
+                        "message": {
+                            "content": json.dumps(
+                                {
+                                    "items": [
+                                        {
+                                            "instruction": "请生成简洁客服回复",
+                                            "input": "客户反馈页面加载慢",
+                                            "output": "已收到反馈，我们正在排查。",
+                                        }
+                                    ]
+                                },
+                                ensure_ascii=False,
+                            )
+                        }
+                    }
+                ]
+            },
+        )
+
+    client = httpx.Client(transport=httpx.MockTransport(handler))
+    records = generate_model_records(
+        [{"id": "preview-1", "edited_content": "客户反馈页面加载慢"}],
+        model={
+            "name": "Qwen",
+            "online_model_name": "qwen-plus",
+            "api_url": "model.example",
+            "api_key": "test-secret",
+        },
+        config={
+            "generation_prompt": "请处理：{{ content }}",
+            "json_mode": True,
+            "temperature": 0.2,
+            "max_tokens": 512,
+        },
+        task_id="task-1",
+        split={"train": 100, "validation": 0, "test": 0},
+        qa_pairs_per_item=1,
+        client=client,
+        on_progress=lambda processed, total: progress_updates.append((processed, total)),
+    )
+
+    assert len(records) == 1
+    assert records[0]["status"] == "valid"
+    assert records[0]["split"] == "train"
+    assert requests[0].headers["Authorization"] == "Bearer test-secret"
+    assert progress_updates == [(1, 1)]
+
+
+def test_generate_model_records_keeps_partial_failure_for_manual_repair() -> None:
+    client = httpx.Client(
+        transport=httpx.MockTransport(
+            lambda _: httpx.Response(200, json={"choices": [{"message": {"content": "not-json"}}]})
+        )
+    )
+    records = generate_model_records(
+        [{"id": "preview-1", "edited_content": "来源正文"}],
+        model={"name": "model", "api_url": "https://model.example/v1"},
+        config={"generation_retries": 1},
+        task_id="task-1",
+        split={"train": 80, "validation": 10, "test": 10},
+        qa_pairs_per_item=1,
+        client=client,
+    )
+
+    assert len(records) == 1
+    assert records[0]["status"] == "invalid"
+    assert records[0]["error"]
+
+
+def test_generate_model_records_batches_fifty_results_with_unique_ids() -> None:
+    requests: list[httpx.Request] = []
+
+    def handler(request: httpx.Request) -> httpx.Response:
+        requests.append(request)
+        batch_start = (len(requests) - 1) * 10 + 1
+        batch_end = batch_start + 9
+        payload = json.loads(request.content)
+        system_prompt = payload["messages"][0]["content"]
+        assert "items 必须包含 10 条" in system_prompt
+        assert f"第 {batch_start}-{batch_end} 条" in system_prompt
+        return httpx.Response(
+            200,
+            json={
+                "choices": [
+                    {
+                        "message": {
+                            "content": json.dumps(
+                                {
+                                    "items": [
+                                        {
+                                            "instruction": "同一问题",
+                                            "input": "来源正文",
+                                            "output": "同一答案",
+                                        }
+                                        for _ in range(batch_start, batch_end + 1)
+                                    ]
+                                },
+                                ensure_ascii=False,
+                            )
+                        }
+                    }
+                ]
+            },
+        )
+
+    records = generate_model_records(
+        [{"id": "preview-50", "edited_content": "来源正文"}],
+        model={"name": "model", "api_url": "https://model.example/v1"},
+        config={},
+        task_id="task-50",
+        split={"train": 100, "validation": 0, "test": 0},
+        qa_pairs_per_item=50,
+        client=httpx.Client(transport=httpx.MockTransport(handler)),
+    )
+
+    assert len(requests) == 5
+    assert len(records) == 50
+    assert len({record["id"] for record in records}) == 50
+    assert {record["instruction"] for record in records} == {"同一问题"}
+    assert all(record["status"] == "valid" for record in records)
+
+
+def test_generate_model_records_preserves_successful_batches_when_one_fails() -> None:
+    request_count = 0
+
+    def handler(_: httpx.Request) -> httpx.Response:
+        nonlocal request_count
+        request_count += 1
+        if request_count == 2:
+            return httpx.Response(500)
+        return httpx.Response(
+            200,
+            json={
+                "choices": [
+                    {
+                        "message": {
+                            "content": json.dumps(
+                                {
+                                    "items": [
+                                        {
+                                            "instruction": f"问题 {index}",
+                                            "output": f"答案 {index}",
+                                        }
+                                        for index in range(1, 11)
+                                    ]
+                                },
+                                ensure_ascii=False,
+                            )
+                        }
+                    }
+                ]
+            },
+        )
+
+    records = generate_model_records(
+        [{"id": "preview-partial", "edited_content": "来源正文"}],
+        model={"name": "model", "api_url": "https://model.example/v1"},
+        config={"generation_retries": 0},
+        task_id="task-partial",
+        split={"train": 100, "validation": 0, "test": 0},
+        qa_pairs_per_item=20,
+        client=httpx.Client(transport=httpx.MockTransport(handler)),
+    )
+
+    assert len(records) == 11
+    assert sum(record["status"] == "valid" for record in records) == 10
+    failed = next(record for record in records if record["status"] == "invalid")
+    assert "第 11-20 条" in failed["instruction"]
+    assert len({record["id"] for record in records}) == len(records)
+
+
+def test_generate_model_records_retries_short_batch_then_marks_it_invalid() -> None:
+    request_count = 0
+
+    def handler(_: httpx.Request) -> httpx.Response:
+        nonlocal request_count
+        request_count += 1
+        return httpx.Response(
+            200,
+            json={
+                "choices": [
+                    {
+                        "message": {
+                            "content": json.dumps(
+                                {
+                                    "items": [
+                                        {
+                                            "instruction": "只有一条",
+                                            "output": "不足本批要求数量",
+                                        }
+                                    ]
+                                },
+                                ensure_ascii=False,
+                            )
+                        }
+                    }
+                ]
+            },
+        )
+
+    records = generate_model_records(
+        [{"id": "preview-short", "edited_content": "来源正文"}],
+        model={"name": "model", "api_url": "https://model.example/v1"},
+        config={"generation_retries": 1},
+        task_id="task-short",
+        split={"train": 100, "validation": 0, "test": 0},
+        qa_pairs_per_item=10,
+        client=httpx.Client(transport=httpx.MockTransport(handler)),
+    )
+
+    assert request_count == 2
+    assert len(records) == 1
+    assert records[0]["status"] == "invalid"
+    assert "expected 10, got 1" in records[0]["error"]
+
+
+@pytest.mark.parametrize("qa_pairs_per_item", [0, 51])
+def test_generate_model_records_rejects_out_of_range_count(
+    qa_pairs_per_item: int,
+) -> None:
+    with pytest.raises(ModelGenerationError, match=r"\[1, 50\]"):
+        generate_model_records(
+            [],
+            model={"name": "model", "api_url": "https://model.example/v1"},
+            config={},
+            task_id="task-invalid",
+            split={"train": 100, "validation": 0, "test": 0},
+            qa_pairs_per_item=qa_pairs_per_item,
+        )

backend/tests/test_data_process_migration.py

@@ -0,0 +1,29 @@
+from __future__ import annotations
+
+from pathlib import Path
+
+from app.modules.data_process.schema_cli import _target_label
+
+
+def test_runtime_migration_fails_fast_on_incompatible_schema() -> None:
+    sql_path = (
+        Path(__file__).resolve().parents[1]
+        / "app"
+        / "db"
+        / "sql"
+        / "002_data_process.sql"
+    )
+    sql = sql_path.read_text(encoding="utf-8")
+
+    assert "requires 001_platform_runtime.sql first" in sql
+    assert "supports only the current TEXT runtime schema" in sql
+    assert "generation_run_id" in sql
+    assert "CREATE TABLE IF NOT EXISTS data_process_results" in sql
+    assert sql.count("BEGIN;") == 1
+    assert sql.rstrip().endswith("COMMIT;")
+
+
+def test_schema_cli_target_label_never_contains_credentials() -> None:
+    label = _target_label("postgresql://secret-user:secret-password@db.example:5433/yg_ft")
+    assert label == "db.example:5433/yg_ft"
+    assert "secret" not in label

backend/tests/test_data_process_storage.py

@@ -0,0 +1,242 @@
+from __future__ import annotations
+
+from pathlib import Path, PurePosixPath
+
+import pytest
+
+from app.modules.data_process import storage as storage_module
+from app.modules.data_process.storage import (
+    DataProcessStorageError,
+    LocalDataProcessStorage,
+    StagedSourceObject,
+)
+
+
+def _stage(
+    storage: LocalDataProcessStorage,
+    *,
+    batch_id: str = "batch-main",
+    task_id: str = "task-1",
+    source_file_id: str = "source-1",
+    version: int = 1,
+    name: str = "source.txt",
+    content: bytes = b"payload",
+) -> StagedSourceObject:
+    return storage.stage_bytes(
+        batch_id=batch_id,
+        task_id=task_id,
+        source_file_id=source_file_id,
+        version=version,
+        name=name,
+        content=content,
+    )
+
+
+def _create_symlink(link: Path, target: Path, *, target_is_directory: bool = False) -> None:
+    try:
+        link.symlink_to(target, target_is_directory=target_is_directory)
+    except (NotImplementedError, OSError) as exc:
+        pytest.skip(f"当前平台不支持创建测试所需的符号链接: {exc}")
+
+
+def _assert_staging_empty(storage: LocalDataProcessStorage) -> None:
+    assert list((storage.root / ".staging").iterdir()) == []
+
+
+def test_stage_publish_read_delete_roundtrip_with_unicode_filename(tmp_path: Path) -> None:
+    storage = LocalDataProcessStorage(tmp_path / "storage")
+    content = "第一行\n第二行，100% 完成".encode()
+
+    staged = _stage(
+        storage,
+        name="中文 数据 100%.csv",
+        content=content,
+    )
+
+    assert "%20" in staged.reference
+    assert "%25" in staged.reference
+    storage.publish([staged])
+
+    assert storage.read(staged.reference) == content
+    assert storage.delete(staged.reference) is True
+    assert storage.delete(staged.reference) is False
+    _assert_staging_empty(storage)
+
+
+def test_db_reference_is_left_to_database_storage(tmp_path: Path) -> None:
+    storage = LocalDataProcessStorage(tmp_path / "storage")
+
+    assert storage.read("db://source-files/source-1") is None
+    assert storage.delete("db://source-files/source-1") is False
+
+
+def test_owned_source_can_be_streamed_by_byte_range(tmp_path: Path) -> None:
+    storage = LocalDataProcessStorage(tmp_path / "storage")
+    content = b"0123456789abcdef"
+    staged = _stage(storage, content=content)
+    storage.publish([staged])
+
+    assert storage.file_size(
+        staged.reference,
+        expected_task_id="task-1",
+        expected_source_file_id="source-1",
+    ) == len(content)
+    assert b"".join(storage.iter_bytes(
+        staged.reference,
+        expected_task_id="task-1",
+        expected_source_file_id="source-1",
+        expected_size=len(content),
+        start=4,
+        length=6,
+        chunk_size=2,
+    )) == b"456789"
+
+    with pytest.raises(DataProcessStorageError, match="owner mismatch"):
+        storage.file_size(
+            staged.reference,
+            expected_task_id="another-task",
+            expected_source_file_id="source-1",
+        )
+    with pytest.raises(DataProcessStorageError, match="does not match metadata"):
+        b"".join(storage.iter_bytes(
+            staged.reference,
+            expected_task_id="task-1",
+            expected_source_file_id="source-1",
+            expected_size=len(content) + 1,
+        ))
+
+
+@pytest.mark.parametrize(
+    "reference",
+    [
+        "local://data-process/../source-1/v1/file.txt",
+        "local://data-process/task-1/source-1/v1/file%2Fname.txt",
+        "local://data-process/task-1/source-1/v1/file.txt?download=1",
+        "local://data-process/task-1/source-1/v1/file.txt#fragment",
+        "https://data-process/task-1/source-1/v1/file.txt",
+    ],
+    ids=[
+        "parent-traversal",
+        "percent-encoded-slash",
+        "query",
+        "fragment",
+        "wrong-scheme",
+    ],
+)
+def test_unsafe_references_are_rejected(tmp_path: Path, reference: str) -> None:
+    storage = LocalDataProcessStorage(tmp_path / "storage")
+
+    with pytest.raises(DataProcessStorageError):
+        storage.read(reference)
+    with pytest.raises(DataProcessStorageError):
+        storage.delete(reference)
+
+
+def test_publish_rejects_intermediate_directory_symlink(tmp_path: Path) -> None:
+    storage = LocalDataProcessStorage(tmp_path / "storage")
+    outside = tmp_path / "outside"
+    outside.mkdir()
+    staged = _stage(storage, task_id="linked-task")
+    _create_symlink(
+        storage.root / "linked-task",
+        outside,
+        target_is_directory=True,
+    )
+
+    with pytest.raises(DataProcessStorageError, match="symlink|non-directory"):
+        storage.publish([staged])
+
+    assert list(outside.iterdir()) == []
+    _assert_staging_empty(storage)
+
+
+def test_target_symlink_is_never_followed_or_deleted(tmp_path: Path) -> None:
+    storage = LocalDataProcessStorage(tmp_path / "storage")
+    staged = _stage(storage, task_id="task-link", source_file_id="source-link")
+    outside_file = tmp_path / "outside.txt"
+    outside_file.write_bytes(b"outside sentinel")
+    final_path = storage.root.joinpath(*staged._relative_path.parts)
+    final_path.parent.mkdir(parents=True)
+    _create_symlink(final_path, outside_file)
+
+    with pytest.raises(DataProcessStorageError, match="already exists"):
+        storage.publish([staged])
+    with pytest.raises(DataProcessStorageError, match="regular file"):
+        storage.read(staged.reference)
+    with pytest.raises(DataProcessStorageError, match="non-regular"):
+        storage.delete(staged.reference)
+
+    assert final_path.is_symlink()
+    assert outside_file.read_bytes() == b"outside sentinel"
+    _assert_staging_empty(storage)
+
+
+def test_publish_rolls_back_first_object_when_second_target_collides(tmp_path: Path) -> None:
+    storage = LocalDataProcessStorage(tmp_path / "storage")
+    existing = _stage(
+        storage,
+        batch_id="batch-existing",
+        source_file_id="source-existing",
+        content=b"existing content",
+    )
+    storage.publish([existing])
+
+    first = _stage(
+        storage,
+        batch_id="batch-new",
+        source_file_id="source-new",
+        content=b"must be rolled back",
+    )
+    colliding_second = _stage(
+        storage,
+        batch_id="batch-new",
+        source_file_id="source-existing",
+        content=b"must not replace existing content",
+    )
+
+    with pytest.raises(DataProcessStorageError, match="already exists"):
+        storage.publish([first, colliding_second])
+
+    with pytest.raises(DataProcessStorageError, match="does not exist"):
+        storage.read(first.reference)
+    assert storage.read(existing.reference) == b"existing content"
+    _assert_staging_empty(storage)
+
+
+def test_publish_rejects_manually_forged_staged_object(tmp_path: Path) -> None:
+    storage = LocalDataProcessStorage(tmp_path / "storage")
+    temporary_path = storage.root / ".staging" / "batch-forged" / "forged.tmp"
+    temporary_path.parent.mkdir()
+    temporary_path.write_bytes(b"forged content")
+    relative_path = PurePosixPath("task-forged", "source-forged", "v1", "forged.txt")
+    forged = StagedSourceObject(
+        reference="local://data-process/task-forged/source-forged/v1/forged.txt",
+        _temporary_path=temporary_path,
+        _relative_path=relative_path,
+    )
+
+    with pytest.raises(DataProcessStorageError, match="was not issued"):
+        storage.publish([forged])
+    with pytest.raises(DataProcessStorageError, match="was not issued"):
+        storage.discard([forged])
+
+    assert temporary_path.read_bytes() == b"forged content"
+    assert not storage.root.joinpath(*relative_path.parts).exists()
+
+
+def test_relative_storage_configuration_is_anchored_to_backend_root(
+    tmp_path: Path,
+    monkeypatch: pytest.MonkeyPatch,
+) -> None:
+    relative_configuration = Path("relative-storage") / tmp_path.name
+    backend_root = Path(storage_module.__file__).resolve().parents[3]
+    monkeypatch.chdir(tmp_path)
+    monkeypatch.setenv("DATA_PROCESS_STORAGE_DIR", str(relative_configuration))
+    storage_module.get_data_process_storage.cache_clear()
+
+    try:
+        configured_root = storage_module._configured_storage_root()
+        assert configured_root == backend_root / relative_configuration
+        assert not configured_root.exists()
+    finally:
+        storage_module.get_data_process_storage.cache_clear()

backend/tests/test_document_chunking.py

@@ -0,0 +1,85 @@
+from __future__ import annotations
+
+from llama_index.core.embeddings import MockEmbedding
+
+from app.modules.data_process.document_chunking import (
+    DocumentChunk,
+    _compact_with_offsets,
+    _project_layout_span,
+    chunk_fixed_text,
+    chunk_semantic_text,
+    merge_short_chunks,
+)
+
+
+def test_fixed_splitter_preserves_offsets_and_token_limit() -> None:
+    text = "第一段说明苹果。第二段说明香蕉。\n第三段说明数据库。第四段说明索引。"
+    chunks = chunk_fixed_text(text, chunk_size=20, chunk_overlap=0)
+
+    assert len(chunks) > 1
+    assert all(chunk.source_start is not None for chunk in chunks)
+    assert all(chunk.source_end is not None for chunk in chunks)
+    assert all(
+        chunk.original_content == text[chunk.source_start : chunk.source_end]
+        for chunk in chunks
+        if chunk.source_start is not None and chunk.source_end is not None
+    )
+    assert all(chunk.token_count <= 20 for chunk in chunks)
+
+
+def test_semantic_splitter_uses_llamaindex_and_reapplies_maximum_size() -> None:
+    text = "第一段讨论水果。第二段继续讨论香蕉。第三段讨论数据库。第四段讨论索引。"
+    chunks = chunk_semantic_text(
+        text,
+        chunk_size=30,
+        chunk_overlap=0,
+        breakpoint_percentile_threshold=95,
+        embed_model=MockEmbedding(embed_dim=8),
+    )
+
+    assert len(chunks) >= 2
+    assert all(chunk.token_count <= 30 for chunk in chunks)
+    assert "".join(chunk.original_content for chunk in chunks) == text
+
+
+def test_layout_projection_ignores_layout_whitespace_but_keeps_source_lines() -> None:
+    source = "标题\n第一条 这是正文。\n第二条 后续正文。"
+    compact_source, offsets = _compact_with_offsets(source)
+    start, end, cursor = _project_layout_span(
+        source,
+        "第一条\n这是正文。",
+        compact_source=compact_source,
+        source_offsets=offsets,
+        compact_start=0,
+    )
+
+    assert source[start:end] == "第一条 这是正文。"
+    assert cursor > 0
+
+
+def test_short_layout_chunk_merges_with_neighbor_and_keeps_page_provenance() -> None:
+    source = "短标题\n这是一段足够长的正文内容，用于测试相邻切片合并。"
+    chunks = [
+        DocumentChunk("短标题", "短标题", 0, 3, 1, 1, 2, source_pages=(1,)),
+        DocumentChunk(
+            "这是一段足够长的正文内容，用于测试相邻切片合并。",
+            "这是一段足够长的正文内容，用于测试相邻切片合并。",
+            4,
+            len(source),
+            2,
+            2,
+            20,
+            source_pages=(1, 2),
+        ),
+    ]
+
+    merged = merge_short_chunks(
+        chunks,
+        source_text=source,
+        min_token_count=10,
+        max_token_count=100,
+    )
+
+    assert len(merged) == 1
+    assert merged[0].original_content == source
+    assert merged[0].source_pages == (1, 2)

compute/README.md

@@ -0,0 +1,81 @@
+# Compute Platform
+
+算力平台与应用平台分开部署，本目录用于后续实现单机多 GPU 调度、文件网关和训练引擎适配。
+
+## 目录结构
+
+```text
+compute/
+  api/                 # 只允许应用平台访问的内部 Compute API
+  agent/               # 单机 Agent，负责 GPU、进程、工作区管理
+  engines/
+    llama_factory/     # LLaMA-Factory 训练引擎适配器
+  file_gateway/        # 本地磁盘上传、下载、预览、离线导入
+  tests/
+```
+
+## 开发职责
+
+- GPU 发现、状态上报、锁定和释放。
+- 本地磁盘工作区管理。
+- 创建、停止、查询训练/评测/推理/合并任务。
+- LLaMA-Factory 命令生成、日志解析、产物收集。
+- 分片上传、短时下载、离线导入。
+- 通过服务间 token 接受应用平台调用。
+
+## 运行模式
+
+- 默认 `COMPUTE_EXECUTION_MODE=real`，Compute API 会通过 `compute.agent.process_manager.ProcessManager` 启动真实 `llamafactory-cli train` 子进程，并将日志写入 `TRAINING_LOG_ROOT`。
+- 真实模式下 GPU 发现优先使用宿主机 `nvidia-smi`。如果部署环境暂时无法调用 `nvidia-smi`，可通过 `COMPUTE_GPU_COUNT`、`COMPUTE_GPU_NAME`、`COMPUTE_GPU_MEMORY_GB`、`COMPUTE_GPU_POWER_LIMIT_W` 声明兼容 GPU 清单，便于应用侧先完成节点登记和联调。
+- 仅隔离联调时可设置 `COMPUTE_EXECUTION_MODE=simulator`，启用内存状态机和合成 GPU/日志数据。该模式不得作为生产运行路径。
+- 服务间鉴权默认开启：设置 `COMPUTE_AUTH_ENABLED=true` 和一致的 `COMPUTE_SERVICE_TOKEN`，应用侧会通过 `X-Compute-Token` 调用 Compute API。
+- 真实训练作业会登记到 `TRAINING_LOG_ROOT/compute-jobs.json`。Compute API 重启后会恢复作业索引，继续提供状态、停止和日志查询。
+- 同一算力节点内按 GPU ID 做轻量锁定；已有运行中作业占用的 GPU 不允许再次提交，避免同机多 GPU 场景下误复用。
+
+真实执行前提：
+
+- 镜像或宿主机环境中 `llamafactory-cli` 可执行。
+- `LLAMA_FACTORY_HOME` 指向 LLaMA-Factory 工作目录。
+- 基座模型路径和数据集名称/目录已经在算力服务器本地可访问。
+- 应用侧训练任务中的 GPU、模型、数据集配置能映射到当前节点本地路径。
+
+## 应用侧接入
+
+应用平台通过“算力节点”页面维护每台 GPU 服务器的 `Compute API` 和 `File Gateway` 地址。点击连接测试时，Backend API 会主动调用：
+
+```text
+GET /modelTF/v1/compute/health
+GET /modelTF/compute/resources/gpus
+```
+
+连接成功后，应用侧会同步节点健康信息、能力标签和 GPU 清单到 PostgreSQL。多节点阶段仍按“每台算力服务器 = 单机多 GPU 节点”管理，每台服务器都部署 Compute API、Agent、File Gateway 契约和 LLaMA-Factory。
+
+训练闭环：
+
+```text
+Frontend 创建/启动训练
+  -> Backend API 选择 compute_nodes 节点
+  -> Backend API POST /modelTF/compute/jobs 到目标 Compute API
+  -> Compute API 启动 llamafactory-cli 子进程
+  -> Backend Worker 定时 GET /modelTF/compute/jobs/{id}
+  -> Backend API 同步 fine_tune_tasks 状态、进度、PID、日志路径和产物索引
+```
+
+## 当前接口能力
+
+日志接口：
+
+```text
+GET /modelTF/compute/jobs/{job_id}/logs?tail_lines=200
+GET /modelTF/compute/jobs/{job_id}/logs?offset=0&limit=500
+```
+
+返回 `content`、`metrics`、`total_lines`、`offset`、`limit`、`has_more`、`next_offset`，用于前端增量刷新和日志平台采集。
+
+文件导入：
+
+```text
+POST /modelTF/compute/files/import-local
+```
+
+该接口用于应用侧调度前把算力服务器本地可访问的模型/数据集路径导入到 `YG_FT_DATA_ROOT` 内部。目标路径会校验不能逃逸出 `YG_FT_DATA_ROOT`，源路径必须已存在于算力服务器本地或挂载目录。

compute/__init__.py

@@ -0,0 +1 @@
+"""Compute platform package."""

compute/agent/__init__.py

@@ -0,0 +1 @@
+"""Compute agent package."""

compute/agent/process_manager.py

@@ -0,0 +1,281 @@
+from __future__ import annotations
+
+import os
+import json
+import contextlib
+import hashlib
+import signal
+import subprocess
+import time
+from dataclasses import dataclass, field
+from pathlib import Path
+from typing import Any
+
+
+TERMINAL_STATUSES = {"completed", "failed", "stopped"}
+
+
+@dataclass
+class ManagedProcess:
+    id: str
+    name: str
+    command: list[str]
+    work_dir: str
+    log_path: Path
+    output_dir: str
+    gpus: list[int]
+    process: subprocess.Popen[Any] | None
+    created_at: float
+    pid: int | None = None
+    status: str = "running"
+    progress: int = 5
+    artifacts: list[dict[str, Any]] = field(default_factory=list)
+
+
+class ProcessManager:
+    def __init__(self, log_root: str) -> None:
+        self.log_root = Path(log_root)
+        self.log_root.mkdir(parents=True, exist_ok=True)
+        self.registry_path = self.log_root / "compute-jobs.json"
+        self.jobs: dict[str, ManagedProcess] = {}
+        self._load_registry()
+
+    def create_job(self, payload: dict[str, Any], command: list[str], work_dir: str) -> dict[str, Any]:
+        job_id = str(payload.get("id") or f"job_{int(time.time() * 1000)}")
+        if job_id in self.jobs and self.jobs[job_id].status not in TERMINAL_STATUSES:
+            raise ValueError(f"job {job_id} is already running")
+
+        output_dir = str(payload.get("output_dir") or f"/data/yg-ft/outputs/{payload.get('name', job_id)}")
+        Path(output_dir).mkdir(parents=True, exist_ok=True)
+        log_path = self.log_root / f"{job_id}.log"
+        env = os.environ.copy()
+        gpus = [int(item) for item in payload.get("gpus") or []]
+        locked = self.locked_gpus()
+        conflict = sorted(set(gpus).intersection(locked))
+        if conflict:
+            raise ValueError(f"gpu already locked: {conflict}")
+        if gpus:
+            env["CUDA_VISIBLE_DEVICES"] = ",".join(str(item) for item in gpus)
+        env.update({str(k): str(v) for k, v in payload.get("env", {}).items()})
+
+        cwd = work_dir if Path(work_dir).exists() else None
+        with log_path.open("ab") as log_file:
+            log_file.write(f"[INFO] starting job_id={job_id} command={' '.join(command)}\n".encode("utf-8"))
+            process = subprocess.Popen(
+                command,
+                cwd=cwd,
+                env=env,
+                stdout=log_file,
+                stderr=subprocess.STDOUT,
+            )
+
+        managed = ManagedProcess(
+            id=job_id,
+            name=str(payload.get("name") or job_id),
+            command=command,
+            work_dir=work_dir,
+            log_path=log_path,
+            output_dir=output_dir,
+            gpus=gpus,
+            process=process,
+            created_at=time.time(),
+            pid=process.pid,
+            progress=10,
+        )
+        self.jobs[job_id] = managed
+        data = self.serialize(managed)
+        self._save_registry()
+        return data
+
+    def get_job(self, job_id: str) -> dict[str, Any] | None:
+        job = self.jobs.get(job_id)
+        if not job:
+            return None
+        return self.serialize(job)
+
+    def list_jobs(self) -> list[dict[str, Any]]:
+        return [self.serialize(job) for job in self.jobs.values()]
+
+    def stop_job(self, job_id: str) -> dict[str, Any] | None:
+        job = self.jobs.get(job_id)
+        if not job:
+            return None
+        if job.status not in TERMINAL_STATUSES:
+            try:
+                if job.process is not None and os.name == "nt":
+                    job.process.terminate()
+                elif job.pid is not None:
+                    os.kill(job.pid, signal.SIGTERM)
+                if job.process is not None:
+                    job.process.wait(timeout=10)
+            except Exception:
+                if job.process is not None:
+                    job.process.kill()
+                elif job.pid is not None:
+                    with contextlib.suppress(Exception):
+                        os.kill(job.pid, signal.SIGKILL)
+            job.status = "stopped"
+            job.progress = min(job.progress, 99)
+        data = self.serialize(job)
+        self._save_registry()
+        return data
+
+    def logs(self, job_id: str) -> str:
+        job = self.jobs.get(job_id)
+        if not job or not job.log_path.exists():
+            return ""
+        return job.log_path.read_text(encoding="utf-8", errors="replace")
+
+    def serialize(self, job: ManagedProcess) -> dict[str, Any]:
+        code = job.process.poll() if job.process is not None else None
+        checkpoints = self._collect_checkpoints(job.output_dir)
+        if job.status not in TERMINAL_STATUSES:
+            if job.process is None and job.pid is not None and not self._pid_alive(job.pid):
+                job.status = "failed"
+                job.progress = min(job.progress, 99)
+                code = -1
+            elif code is None:
+                job.status = "running"
+                elapsed = max(0, int(time.time() - job.created_at))
+                job.progress = min(95, max(job.progress, 10 + elapsed // 6))
+            elif code == 0:
+                job.status = "completed"
+                job.progress = 100
+                job.artifacts = self._collect_artifacts(job.output_dir)
+            else:
+                job.status = "failed"
+                job.progress = min(job.progress, 99)
+        self._save_registry()
+        return {
+            "id": job.id,
+            "name": job.name,
+            "status": job.status,
+            "progress": job.progress,
+            "pid": job.pid,
+            "gpus": job.gpus,
+            "created_at": job.created_at,
+            "command": job.command,
+            "work_dir": job.work_dir,
+            "output_dir": job.output_dir,
+            "log_file": str(job.log_path),
+            "artifacts": job.artifacts,
+            "checkpoints": checkpoints,
+            "return_code": code,
+        }
+
+    def locked_gpus(self) -> set[int]:
+        locked: set[int] = set()
+        for job in self.jobs.values():
+            status = self.serialize(job)["status"]
+            if status in {"queued", "running"}:
+                locked.update(job.gpus)
+        return locked
+
+    def _collect_artifacts(self, output_dir: str) -> list[dict[str, Any]]:
+        root = Path(output_dir)
+        if not root.exists():
+            return []
+        artifacts: list[dict[str, Any]] = []
+        for path in root.rglob("*"):
+            if path.is_file():
+                digest = hashlib.sha256()
+                with path.open("rb") as handle:
+                    for chunk in iter(lambda: handle.read(1024 * 1024), b""):
+                        digest.update(chunk)
+                size = path.stat().st_size
+                artifacts.append(
+                    {
+                        "path": str(path),
+                        "name": path.name,
+                        "size": size,
+                        "size_bytes": size,
+                        "checksum_sha256": digest.hexdigest(),
+                    }
+                )
+        return artifacts[:200]
+
+    def _collect_checkpoints(self, output_dir: str) -> list[dict[str, Any]]:
+        root = Path(output_dir)
+        if not root.exists():
+            return []
+        checkpoints: list[dict[str, Any]] = []
+        for path in root.glob("checkpoint-*"):
+            if not path.is_dir():
+                continue
+            step = 0
+            try:
+                step = int(path.name.rsplit("-", 1)[-1])
+            except ValueError:
+                step = 0
+            size_bytes = sum(item.stat().st_size for item in path.rglob("*") if item.is_file())
+            checkpoints.append(
+                {
+                    "step": step,
+                    "name": path.name,
+                    "path": str(path),
+                    "size_bytes": size_bytes,
+                    "create_time": path.stat().st_mtime,
+                }
+            )
+        return sorted(checkpoints, key=lambda item: (int(item.get("step") or 0), str(item.get("name") or "")))
+
+    def _save_registry(self) -> None:
+        items = []
+        for job in self.jobs.values():
+            items.append(
+                {
+                    "id": job.id,
+                    "name": job.name,
+                    "command": job.command,
+                    "work_dir": job.work_dir,
+                    "log_path": str(job.log_path),
+                    "output_dir": job.output_dir,
+                    "gpus": job.gpus,
+                    "pid": job.pid,
+                    "created_at": job.created_at,
+                    "status": job.status,
+                    "progress": job.progress,
+                    "artifacts": job.artifacts,
+                }
+            )
+        self.registry_path.write_text(json.dumps(items, ensure_ascii=False, indent=2), encoding="utf-8")
+
+    def _load_registry(self) -> None:
+        if not self.registry_path.exists():
+            return
+        try:
+            items = json.loads(self.registry_path.read_text(encoding="utf-8"))
+        except json.JSONDecodeError:
+            return
+        for item in items if isinstance(items, list) else []:
+            if not isinstance(item, dict):
+                continue
+            pid = item.get("pid")
+            status = item.get("status", "failed")
+            if status not in TERMINAL_STATUSES and pid and not self._pid_alive(int(pid)):
+                status = "failed"
+            job = ManagedProcess(
+                id=str(item["id"]),
+                name=str(item.get("name") or item["id"]),
+                command=[str(part) for part in item.get("command") or []],
+                work_dir=str(item.get("work_dir") or ""),
+                log_path=Path(item.get("log_path") or self.log_root / f"{item['id']}.log"),
+                output_dir=str(item.get("output_dir") or ""),
+                gpus=[int(gpu) for gpu in item.get("gpus") or []],
+                process=None,
+                pid=int(pid) if pid else None,
+                created_at=float(item.get("created_at") or time.time()),
+                status=status,
+                progress=int(item.get("progress") or 0),
+                artifacts=item.get("artifacts") or [],
+            )
+            self.jobs[job.id] = job
+
+    def _pid_alive(self, pid: int) -> bool:
+        if pid <= 0:
+            return False
+        try:
+            os.kill(pid, 0)
+            return True
+        except OSError:
+            return False

compute/api/__init__.py

@@ -0,0 +1 @@
+"""Compute API package."""

compute/api/main.py

@@ -0,0 +1,747 @@
+from __future__ import annotations
+
+import os
+import math
+import hashlib
+import shutil
+import subprocess
+import time
+from pathlib import Path
+from typing import Any
+
+from fastapi import FastAPI, File, Form, HTTPException, Query, Request, UploadFile
+from fastapi.responses import FileResponse, JSONResponse
+
+from compute.agent.process_manager import ProcessManager
+from compute.engines.llama_factory.adapter import build_command, parse_log_line, prepare_runtime_files
+
+
+def create_app() -> FastAPI:
+    app = FastAPI(title="YG Fine-Tune Compute API")
+    jobs: dict[str, dict[str, Any]] = {}
+    route_prefix = os.getenv("MODELTF_ROUTE_PREFIX", "/modelTF").rstrip("/") or "/modelTF"
+    process_manager = ProcessManager(os.getenv("TRAINING_LOG_ROOT", "/opt/yg-ft/logs/training"))
+
+    @app.middleware("http")
+    async def compute_token_auth(request: Request, call_next):
+        token = os.getenv("COMPUTE_SERVICE_TOKEN", "")
+        auth_enabled = os.getenv("COMPUTE_AUTH_ENABLED", "true").lower() == "true"
+        public_paths = {f"{route_prefix}/health", "/health"}
+        if auth_enabled and token and request.url.path not in public_paths:
+            header_token = request.headers.get("x-compute-token", "")
+            auth_header = request.headers.get("authorization", "")
+            bearer_token = auth_header.removeprefix("Bearer ").strip() if auth_header.startswith("Bearer ") else ""
+            if header_token != token and bearer_token != token:
+                return JSONResponse({"detail": "invalid compute service token"}, status_code=401)
+        return await call_next(request)
+
+    def now() -> float:
+        return time.time()
+
+    def host_id() -> str:
+        return os.getenv("COMPUTE_HOST_ID", "gpu-node-01")
+
+    def execution_mode() -> str:
+        return os.getenv("COMPUTE_EXECUTION_MODE", os.getenv("COMPUTE_MODE", "real")).lower()
+
+    def _int_env(name: str, default: int) -> int:
+        raw = os.getenv(name)
+        if raw is None or raw == "":
+            return default
+        return int(raw)
+
+    def _float_env(name: str, default: float) -> float:
+        raw = os.getenv(name)
+        if raw is None or raw == "":
+            return default
+        return float(raw)
+
+    def _path_inside(root: Path, candidate: Path) -> bool:
+        try:
+            candidate.resolve().relative_to(root.resolve())
+            return True
+        except ValueError:
+            return False
+
+    def _llama_factory_version() -> str:
+        for command in (["llamafactory-cli", "version"], ["llamafactory-cli", "--version"]):
+            try:
+                result = subprocess.run(command, capture_output=True, text=True, timeout=5)
+            except Exception:
+                continue
+            output = (result.stdout or result.stderr).strip()
+            if result.returncode == 0 and output:
+                return output.splitlines()[0][:120]
+        return ""
+
+    def torch_cuda_status() -> dict[str, Any]:
+        try:
+            import torch  # type: ignore[import-not-found]
+        except Exception as exc:  # noqa: BLE001 - keep health endpoint resilient
+            return {
+                "available": False,
+                "device_count": 0,
+                "torch_version": "",
+                "torch_cuda_version": "",
+                "error": f"torch import failed: {exc}",
+            }
+        try:
+            available = bool(torch.cuda.is_available())
+            device_count = int(torch.cuda.device_count())
+            devices = []
+            for index in range(device_count):
+                props = torch.cuda.get_device_properties(index)
+                devices.append(
+                    {
+                        "index": index,
+                        "name": props.name,
+                        "memory_total_gb": round(props.total_memory / 1024 / 1024 / 1024, 2),
+                    }
+                )
+            return {
+                "available": available,
+                "device_count": device_count,
+                "torch_version": str(torch.__version__),
+                "torch_cuda_version": str(torch.version.cuda or ""),
+                "devices": devices,
+                "error": "" if available else "torch cuda is not available",
+            }
+        except Exception as exc:  # noqa: BLE001 - expose CUDA initialization failures
+            return {
+                "available": False,
+                "device_count": 0,
+                "torch_version": str(getattr(torch, "__version__", "")),
+                "torch_cuda_version": str(getattr(torch.version, "cuda", "") or ""),
+                "devices": [],
+                "error": str(exc),
+            }
+
+    def _slice_log_content(
+        content: str,
+        tail_lines: int | None = None,
+        offset: int | None = None,
+        limit: int | None = None,
+    ) -> dict[str, Any]:
+        lines = content.splitlines()
+        total = len(lines)
+        if offset is not None or limit is not None:
+            start = max(0, offset or 0)
+            end = start + limit if limit else total
+            selected = lines[start:end]
+        else:
+            tail = tail_lines or 200
+            start = max(0, total - tail)
+            selected = lines[start:]
+        next_offset = start + len(selected)
+        return {
+            "content": "\n".join(selected),
+            "total_lines": total,
+            "offset": start,
+            "limit": len(selected),
+            "has_more": next_offset < total,
+            "next_offset": next_offset if next_offset < total else None,
+        }
+
+    def _safe_float(value: Any, default: float = 0) -> float:
+        try:
+            return float(str(value).replace("[N/A]", "").strip() or default)
+        except (TypeError, ValueError):
+            return default
+
+    def job_status(job: dict[str, Any]) -> dict[str, Any]:
+        if execution_mode() != "simulator":
+            return job
+        elapsed = max(0, int(now() - job["created_at"]))
+        if job["status"] not in {"stopped", "failed", "completed"}:
+            if elapsed < 5:
+                job["status"] = "queued"
+                job["progress"] = 12 + elapsed * 3
+            elif elapsed < 60:
+                job["status"] = "running"
+                job["progress"] = min(96, 25 + int((elapsed - 5) / 55 * 70))
+            else:
+                job["status"] = "completed"
+                job["progress"] = 100
+        job["logs"] = generate_logs(job)
+        return job
+
+    def generate_logs(job: dict[str, Any]) -> str:
+        progress = int(job.get("progress", 0) or 0)
+        points = max(1, min(80, progress))
+        lines = [
+            f"[INFO] compute_host_id={host_id()} job_id={job['id']} engine=llama_factory",
+            f"[INFO] command={' '.join(job['command'])}",
+        ]
+        for step in range(1, points + 1):
+            if step % 4 != 0 and step != points:
+                continue
+            loss = max(0.11, 2.5 * math.exp(-step / 40))
+            grad_norm = 0.4 + (step % 5) * 0.04
+            lr = 0.0002 * max(0.05, 1 - step / 100)
+            epoch = round(step / points * 3, 4)
+            lines.append(
+                "{"
+                f"'loss': {loss:.4f}, 'grad_norm': {grad_norm:.4f}, "
+                f"'learning_rate': {lr:.8f}, 'epoch': {epoch:.4f}"
+                "}"
+            )
+        if job.get("status") == "completed":
+            lines.extend(
+                [
+                    "***** train metrics *****",
+                    "epoch = 3",
+                    "train_loss = 0.1181",
+                    "train_runtime = 1m 0s",
+                    "***** train metrics end *****",
+                ]
+            )
+        return "\n".join(lines)
+
+    def real_gpu_resources() -> list[dict[str, Any]]:
+        query = (
+            "index,uuid,name,memory.total,memory.used,utilization.gpu,"
+            "temperature.gpu,power.draw,power.limit"
+        )
+        try:
+            result = subprocess.run(
+                ["nvidia-smi", f"--query-gpu={query}", "--format=csv,noheader,nounits"],
+                check=True,
+                capture_output=True,
+                text=True,
+                timeout=5,
+            )
+        except Exception:
+            return fallback_gpu_resources()
+
+        items: list[dict[str, Any]] = []
+        for line in result.stdout.splitlines():
+            parts = [part.strip() for part in line.split(",")]
+            if len(parts) < 9:
+                continue
+            idx, uuid, name, mem_total, mem_used, util, temp, power, power_limit = parts[:9]
+            total_gb = round(_safe_float(mem_total) / 1024, 2)
+            used_gb = round(_safe_float(mem_used) / 1024, 2)
+            memory_percent = round(used_gb / total_gb * 100, 1) if total_gb else 0
+            gpu_percent = int(_safe_float(util))
+            items.append(
+                {
+                    "id": int(idx),
+                    "gpu_index": int(idx),
+                    "uuid": uuid,
+                    "name": name,
+                    "status": "busy" if gpu_percent >= 5 or used_gb > 1 else "idle",
+                    "gpu_percent": gpu_percent,
+                    "memory_used_gb": used_gb,
+                    "memory_total_gb": total_gb,
+                    "memory_percent": memory_percent,
+                    "temperature": int(_safe_float(temp)),
+                    "power_w": round(_safe_float(power), 1),
+                    "power_limit_w": round(_safe_float(power_limit), 1),
+                    "processes": [],
+                }
+            )
+        return items
+
+    def fallback_gpu_resources() -> list[dict[str, Any]]:
+        count = _int_env("COMPUTE_GPU_COUNT", 0)
+        if count <= 0:
+            return []
+        name = os.getenv("COMPUTE_GPU_NAME", "Configured GPU")
+        memory_total = _float_env("COMPUTE_GPU_MEMORY_GB", 80.0)
+        power_limit = _float_env("COMPUTE_GPU_POWER_LIMIT_W", 300.0)
+        return [
+            {
+                "id": idx,
+                "gpu_index": idx,
+                "uuid": f"GPU-{host_id().upper()}-{idx}",
+                "name": name,
+                "status": "idle",
+                "gpu_percent": 0,
+                "memory_used_gb": 0,
+                "memory_total_gb": memory_total,
+                "memory_percent": 0,
+                "temperature": _int_env("COMPUTE_GPU_BASE_TEMPERATURE", 35),
+                "power_w": 0,
+                "power_limit_w": power_limit,
+                "processes": [],
+            }
+            for idx in range(count)
+        ]
+
+    def gpu_resources() -> list[dict[str, Any]]:
+        if execution_mode() != "simulator":
+            return real_gpu_resources()
+        active_jobs = [job_status(job) for job in jobs.values() if job["status"] in {"queued", "running"}]
+        gpus: list[dict[str, Any]] = []
+        for idx in range(4):
+            task = next((job for job in active_jobs if idx in job.get("gpus", [])), None)
+            busy = task is not None and task["status"] == "running"
+            reserved = task is not None and task["status"] == "queued"
+            gpus.append(
+                {
+                    "id": idx,
+                    "uuid": f"GPU-{host_id().upper()}-{idx}",
+                    "name": os.getenv("COMPUTE_GPU_NAME", "NVIDIA A800-SXM4-80GB"),
+                    "status": "busy" if busy else "reserved" if reserved else "idle",
+                    "gpu_percent": 88 if busy else 25 if reserved else 4,
+                    "memory_used_gb": 58 if busy else 12 if reserved else 2,
+                    "memory_total_gb": 80,
+                    "temperature": 61 if busy else 45 if reserved else 36,
+                    "power_w": 215 if busy else 80 if reserved else 25,
+                    "power_limit_w": 300,
+                    "processes": [
+                        {
+                            "pid": task["pid"],
+                            "name": "llamafactory-cli",
+                            "task_name": task["name"],
+                            "memory_used_gb": 58 if busy else 12,
+                        }
+                    ]
+                    if task
+                    else [],
+                }
+            )
+        return gpus
+
+    def _validate_training_accelerator(payload: dict[str, Any]) -> tuple[list[str], list[str], dict[str, Any]]:
+        errors: list[str] = []
+        warnings: list[str] = []
+        if str(payload.get("engine") or payload.get("training_engine") or "llama_factory") == "smoke":
+            return errors, warnings, {}
+        requested_gpus = [int(item) for item in payload.get("gpus") or []]
+        if not requested_gpus:
+            warnings.append("no gpu selected; training will run on CPU")
+            return errors, warnings, {}
+        cuda = torch_cuda_status()
+        if not cuda.get("available"):
+            errors.append(f"torch cuda unavailable on compute node: {cuda.get('error') or 'unknown error'}")
+        device_count = int(cuda.get("device_count") or 0)
+        if device_count and max(requested_gpus) >= device_count:
+            errors.append(f"requested gpu index out of torch device range: requested={requested_gpus}, device_count={device_count}")
+        min_memory_gb = _float_env("MIN_TRAINING_GPU_MEMORY_GB", 4.0)
+        gpus = {int(item["gpu_index"]): item for item in gpu_resources() if "gpu_index" in item}
+        for gpu_index in requested_gpus:
+            gpu = gpus.get(gpu_index)
+            if not gpu:
+                errors.append(f"requested gpu not found by nvidia-smi: {gpu_index}")
+                continue
+            memory_total = float(gpu.get("memory_total_gb") or 0)
+            if memory_total and memory_total < min_memory_gb:
+                errors.append(
+                    f"gpu {gpu_index} memory too small: {memory_total}GB < required {min_memory_gb}GB"
+                )
+        return errors, warnings, cuda
+
+    def _check_path_item(item: dict[str, Any]) -> dict[str, Any]:
+        path = Path(str(item.get("path") or ""))
+        exists = path.exists()
+        expected_type = str(item.get("type") or "any")
+        ok = exists
+        if exists and expected_type == "dir":
+            ok = path.is_dir()
+        if exists and expected_type == "file":
+            ok = path.is_file()
+        return {
+            "name": item.get("name") or "",
+            "path": str(path),
+            "type": expected_type,
+            "required": bool(item.get("required", True)),
+            "exists": exists,
+            "is_dir": path.is_dir() if exists else False,
+            "is_file": path.is_file() if exists else False,
+            "byte_size": sum(child.stat().st_size for child in path.rglob("*") if child.is_file()) if exists and path.is_dir() else path.stat().st_size if exists and path.is_file() else 0,
+            "ok": ok or not item.get("required", True),
+        }
+
+    def _job_preview(payload: dict[str, Any], check_paths: bool) -> dict[str, Any]:
+        warnings: list[str] = []
+        runtime_files: list[dict[str, str]] = []
+        command_payload = {**payload, "require_dataset_files": check_paths}
+        if check_paths:
+            try:
+                runtime_files = prepare_runtime_files(command_payload)
+            except OSError as exc:
+                return {
+                    "valid": False,
+                    "errors": [f"prepare runtime files failed: {exc}"],
+                    "warnings": warnings,
+                    "engine": str(payload.get("engine") or payload.get("training_engine") or "llama_factory"),
+                    "command": [],
+                    "command_text": "",
+                    "work_dir": os.getenv("LLAMA_FACTORY_HOME", "/app/LLaMA-Factory"),
+                    "env": {},
+                    "runtime_files": [],
+                    "path_checks": [],
+                }
+        try:
+            command = build_command(command_payload, os.getenv("LLAMA_FACTORY_HOME", "/app/LLaMA-Factory"))
+        except ValueError as exc:
+            return {
+                "valid": False,
+                "errors": [part.strip() for part in str(exc).split(";") if part.strip()],
+                "warnings": warnings,
+                "engine": str(payload.get("engine") or payload.get("training_engine") or "llama_factory"),
+                "command": [],
+                "command_text": "",
+                "work_dir": os.getenv("LLAMA_FACTORY_HOME", "/app/LLaMA-Factory"),
+                "env": {},
+                "runtime_files": runtime_files,
+                "path_checks": [],
+            }
+
+        errors: list[str] = []
+        engine = str(payload.get("engine") or payload.get("training_engine") or "llama_factory")
+        path_checks: list[dict[str, Any]] = []
+        accelerator: dict[str, Any] = {}
+        if check_paths and engine != "smoke":
+            path_checks = [
+                _check_path_item(
+                    {
+                        "name": "model_name_or_path",
+                        "path": payload.get("model_name_or_path") or payload.get("base_model") or payload.get("base_model_path") or "",
+                        "type": "any",
+                        "required": True,
+                    }
+                )
+            ]
+            if engine in {"merge", "export", "llama_factory_export"} and payload.get("adapter_name_or_path"):
+                path_checks.append(
+                    _check_path_item(
+                        {
+                            "name": "adapter_name_or_path",
+                            "path": payload.get("adapter_name_or_path"),
+                            "type": "any",
+                            "required": True,
+                        }
+                    )
+                )
+            if payload.get("dataset_dir"):
+                path_checks.append(
+                    _check_path_item(
+                        {
+                            "name": "dataset_dir",
+                            "path": payload.get("dataset_dir"),
+                            "type": "dir",
+                            "required": True,
+                        }
+                    )
+                )
+            output_dir = Path(str(payload.get("output_dir") or "/data/yg-ft/outputs/training-job"))
+            path_checks.append(
+                _check_path_item(
+                    {
+                        "name": "output_parent",
+                        "path": str(output_dir.parent),
+                        "type": "dir",
+                        "required": False,
+                    }
+                )
+            )
+            errors.extend(
+                [f"{item['name']} path not available: {item['path']}" for item in path_checks if not item["ok"] and item["required"]]
+            )
+            if shutil.which(command.command[0]) is None:
+                errors.append(f"training command not found: {command.command[0]}")
+            if not Path(command.work_dir).exists():
+                errors.append(f"llama_factory_home not found: {command.work_dir}")
+            if engine not in {"merge", "export", "llama_factory_export"}:
+                accelerator_errors, accelerator_warnings, accelerator = _validate_training_accelerator(payload)
+                errors.extend(accelerator_errors)
+                warnings.extend(accelerator_warnings)
+        elif engine == "smoke":
+            warnings.append("smoke engine skips model and dataset path checks")
+
+        return {
+            "valid": not errors,
+            "errors": errors,
+            "warnings": warnings,
+            "engine": engine,
+            "command": command.command,
+            "command_text": " ".join(command.command),
+            "work_dir": command.work_dir,
+            "env": command.env,
+            "runtime_files": runtime_files,
+            "accelerator": accelerator,
+            "path_checks": path_checks,
+        }
+
+    @app.get(f"{route_prefix}/health")
+    async def health_check() -> dict[str, str]:
+        return {
+            "status": "ok",
+            "compute_host_id": os.getenv("COMPUTE_HOST_ID", "unknown"),
+        }
+
+    @app.get("/health")
+    async def health_check_root() -> dict[str, str]:
+        return await health_check()
+
+    @app.get(f"{route_prefix}/v1/compute/health")
+    async def compute_health_check() -> dict[str, Any]:
+        data_root = Path(os.getenv("YG_FT_DATA_ROOT", "/data/yg-ft"))
+        dataset_root = Path(os.getenv("YG_FT_DATASET_ROOT", str(data_root / "datasets")))
+        output_root = Path(os.getenv("YG_FT_OUTPUT_ROOT", str(data_root / "outputs")))
+        llama_factory_home = Path(os.getenv("LLAMA_FACTORY_HOME", "/app/LLaMA-Factory"))
+        gpu_items = gpu_resources()
+        torch_cuda = torch_cuda_status()
+        return {
+            "status": "ok",
+            "api_version": "v1",
+            "compute_host_id": os.getenv("COMPUTE_HOST_ID", "unknown"),
+            "app_callback_enabled": os.getenv("ENABLE_APP_CALLBACK", "false").lower() == "true",
+            "data_root": str(data_root),
+            "data_root_exists": data_root.exists(),
+            "model_root": os.getenv("YG_FT_MODEL_ROOT", str(data_root / "models")),
+            "dataset_root": str(dataset_root),
+            "dataset_root_exists": dataset_root.exists(),
+            "output_root": str(output_root),
+            "output_root_exists": output_root.exists(),
+            "log_root": os.getenv("TRAINING_LOG_ROOT", "/opt/yg-ft/logs/training"),
+            "llama_factory_home": str(llama_factory_home),
+            "llama_factory_home_exists": llama_factory_home.exists(),
+            "llama_factory_version": os.getenv("LLAMA_FACTORY_VERSION", ""),
+            "execution_mode": execution_mode(),
+            "gpu_count": _int_env("COMPUTE_GPU_COUNT", 0),
+            "nvidia_gpu_count": len(gpu_items),
+            "torch_cuda": torch_cuda,
+            "gpu_discovery_endpoint": f"{route_prefix}/compute/resources/gpus",
+            "capabilities": ["gpu_discovery", "torch_cuda_diagnostics", "llama_factory", "file_gateway", "job_polling"],
+        }
+
+    @app.get(f"{route_prefix}/v1/compute/jobs")
+    async def list_jobs_alias() -> dict[str, list[dict[str, Any]]]:
+        items = process_manager.list_jobs() if execution_mode() != "simulator" else [job_status(job) for job in jobs.values()]
+        return {"items": items}
+
+    @app.get(f"{route_prefix}/compute/resources/gpus")
+    async def list_gpus() -> dict[str, Any]:
+        return {"items": gpu_resources(), "compute_host_id": host_id()}
+
+    @app.get(f"{route_prefix}/v1/compute/resources/gpus")
+    async def list_gpus_v1() -> dict[str, Any]:
+        return {"items": gpu_resources(), "compute_host_id": host_id()}
+
+    @app.post(f"{route_prefix}/compute/jobs/preview")
+    async def preview_job(payload: dict[str, Any]) -> dict[str, Any]:
+        return _job_preview(payload, check_paths=False)
+
+    @app.post(f"{route_prefix}/compute/jobs/validate")
+    async def validate_job(payload: dict[str, Any]) -> dict[str, Any]:
+        return _job_preview(payload, check_paths=True)
+
+    @app.post(f"{route_prefix}/v1/compute/jobs/preview")
+    async def preview_job_v1(payload: dict[str, Any]) -> dict[str, Any]:
+        return await preview_job(payload)
+
+    @app.post(f"{route_prefix}/v1/compute/jobs/validate")
+    async def validate_job_v1(payload: dict[str, Any]) -> dict[str, Any]:
+        return await validate_job(payload)
+
+    @app.post(f"{route_prefix}/compute/files/check-paths")
+    async def check_paths(payload: dict[str, Any]) -> dict[str, Any]:
+        items = [_check_path_item(item) for item in payload.get("paths", []) if isinstance(item, dict)]
+        return {"valid": all(item["ok"] for item in items), "items": items}
+
+    @app.get(f"{route_prefix}/compute/files/list")
+    async def list_files(
+        root: str = Query(default="data"),
+        relative_path: str = Query(default=""),
+        directories_only: bool = Query(default=False),
+    ) -> dict[str, Any]:
+        roots = {
+            "data": Path(os.getenv("YG_FT_DATA_ROOT", "/data/yg-ft")),
+            "models": Path(os.getenv("YG_FT_MODEL_ROOT", os.getenv("YG_FT_DATA_ROOT", "/data/yg-ft") + "/models")),
+            "datasets": Path(os.getenv("YG_FT_DATASET_ROOT", os.getenv("YG_FT_DATA_ROOT", "/data/yg-ft") + "/datasets")),
+            "outputs": Path(os.getenv("YG_FT_OUTPUT_ROOT", os.getenv("YG_FT_DATA_ROOT", "/data/yg-ft") + "/outputs")),
+        }
+        base = roots.get(root)
+        if base is None:
+            raise HTTPException(status_code=400, detail="invalid root")
+        target = (base / relative_path.lstrip("/\\")).resolve()
+        if not _path_inside(base, target):
+            raise HTTPException(status_code=400, detail="path must stay inside selected root")
+        if not target.exists():
+            return {"root": root, "base_path": str(base), "relative_path": relative_path, "items": []}
+        items = []
+        for child in sorted(target.iterdir(), key=lambda path: (not path.is_dir(), path.name.lower())):
+            if directories_only and not child.is_dir():
+                continue
+            items.append(
+                {
+                    "name": child.name,
+                    "path": str(child),
+                    "relative_path": str(child.relative_to(base)).replace("\\", "/"),
+                    "type": "directory" if child.is_dir() else "file",
+                    "byte_size": child.stat().st_size if child.is_file() else 0,
+                }
+            )
+        return {"root": root, "base_path": str(base), "relative_path": relative_path, "items": items}
+
+    @app.post(f"{route_prefix}/compute/jobs")
+    async def create_job(payload: dict[str, Any]) -> dict[str, Any]:
+        payload = {**payload, "require_dataset_files": True}
+        try:
+            prepare_runtime_files(payload)
+        except OSError as exc:
+            raise HTTPException(status_code=400, detail=f"prepare runtime files failed: {exc}")
+        try:
+            command = build_command(payload, os.getenv("LLAMA_FACTORY_HOME", "/app/LLaMA-Factory"))
+        except ValueError as exc:
+            raise HTTPException(status_code=400, detail=str(exc))
+        job_id = str(payload.get("id") or f"job_{int(now() * 1000)}")
+        if execution_mode() != "simulator":
+            try:
+                return process_manager.create_job({**payload, "id": job_id}, command.command, command.work_dir)
+            except FileNotFoundError as exc:
+                raise HTTPException(status_code=500, detail=f"training command not found: {exc.filename}")
+            except ValueError as exc:
+                raise HTTPException(status_code=409, detail=str(exc))
+        job = {
+            "id": job_id,
+            "name": payload.get("name", job_id),
+            "status": "queued",
+            "progress": 10,
+            "pid": int(52000 + now() % 10000),
+            "gpus": payload.get("gpus") or [0],
+            "created_at": now(),
+            "command": command.command,
+            "work_dir": command.work_dir,
+            "artifacts": [],
+            "logs": "",
+        }
+        jobs[job_id] = job
+        return job_status(job)
+
+    @app.get(f"{route_prefix}/compute/jobs")
+    async def list_jobs() -> dict[str, Any]:
+        items = process_manager.list_jobs() if execution_mode() != "simulator" else [job_status(job) for job in jobs.values()]
+        return {"items": items}
+
+    @app.get(f"{route_prefix}/compute/jobs/{{job_id}}")
+    async def get_job(job_id: str) -> dict[str, Any]:
+        job = jobs.get(job_id)
+        if execution_mode() != "simulator":
+            job = process_manager.get_job(job_id)
+            if not job:
+                raise HTTPException(status_code=404, detail="job not found")
+            return job
+        job = jobs.get(job_id)
+        if not job:
+            raise HTTPException(status_code=404, detail="job not found")
+        return job_status(job)
+
+    @app.post(f"{route_prefix}/compute/jobs/{{job_id}}/stop")
+    async def stop_job(job_id: str) -> dict[str, Any]:
+        if execution_mode() != "simulator":
+            job = process_manager.stop_job(job_id)
+            if not job:
+                raise HTTPException(status_code=404, detail="job not found")
+            return job
+        job = jobs.get(job_id)
+        if not job:
+            raise HTTPException(status_code=404, detail="job not found")
+        job["status"] = "stopped"
+        job["progress"] = min(job.get("progress", 0), 99)
+        return job
+
+    @app.get(f"{route_prefix}/compute/jobs/{{job_id}}/logs")
+    async def job_logs(
+        job_id: str,
+        tail_lines: int | None = Query(default=200, ge=1, le=5000),
+        offset: int | None = Query(default=None, ge=0),
+        limit: int | None = Query(default=None, ge=1, le=5000),
+    ) -> dict[str, Any]:
+        if execution_mode() != "simulator":
+            job = process_manager.get_job(job_id)
+            if not job:
+                raise HTTPException(status_code=404, detail="job not found")
+            content = process_manager.logs(job_id)
+        else:
+            job = jobs.get(job_id)
+            if not job:
+                raise HTTPException(status_code=404, detail="job not found")
+            job = job_status(job)
+            content = job["logs"]
+        window = _slice_log_content(content, tail_lines, offset, limit)
+        metrics = [parse_log_line(line) for line in window["content"].splitlines()]
+        return {"job_id": job_id, **window, "metrics": [m for m in metrics if m]}
+
+    @app.post(f"{route_prefix}/compute/files/upload")
+    async def upload_file(
+        file: UploadFile | None = File(default=None),
+        target_relative_path: str | None = Form(default=None),
+        resource_type: str | None = Form(default=None),
+        resource_id: str | None = Form(default=None),
+    ) -> dict[str, Any]:
+        file_id = f"file_{int(now() * 1000)}"
+        data_root = Path(os.getenv("YG_FT_DATA_ROOT", "/data/yg-ft"))
+        data_root.mkdir(parents=True, exist_ok=True)
+        filename = Path(file.filename if file else file_id).name
+        if target_relative_path:
+            target = (data_root / target_relative_path.lstrip("/\\")).resolve()
+            if not _path_inside(data_root, target):
+                raise HTTPException(status_code=400, detail="target path must stay inside YG_FT_DATA_ROOT")
+        else:
+            target = data_root / "uploads" / f"{file_id}_{filename}"
+        if file:
+            target.parent.mkdir(parents=True, exist_ok=True)
+            with target.open("wb") as output:
+                while chunk := await file.read(1024 * 1024):
+                    output.write(chunk)
+        else:
+            target.parent.mkdir(parents=True, exist_ok=True)
+            target.write_text("", encoding="utf-8")
+        return {
+            "id": file_id,
+            "resource_type": resource_type,
+            "resource_id": resource_id,
+            "status": "available",
+            "local_path": str(target),
+            "byte_size": target.stat().st_size,
+            "checksum_sha256": hashlib.sha256(target.read_bytes()).hexdigest() if target.is_file() else "",
+        }
+
+    @app.post(f"{route_prefix}/compute/files/import-local")
+    async def import_local_file(payload: dict[str, Any]) -> dict[str, Any]:
+        source = Path(str(payload.get("source_path") or ""))
+        if not source.exists():
+            raise HTTPException(status_code=404, detail="source path not found")
+        data_root = Path(os.getenv("YG_FT_DATA_ROOT", "/data/yg-ft"))
+        data_root.mkdir(parents=True, exist_ok=True)
+        relative = str(payload.get("target_relative_path") or f"imports/{source.name}").lstrip("/\\")
+        target = (data_root / relative).resolve()
+        if not _path_inside(data_root, target):
+            raise HTTPException(status_code=400, detail="target path must stay inside YG_FT_DATA_ROOT")
+        target.parent.mkdir(parents=True, exist_ok=True)
+        if source.is_dir():
+            if target.exists():
+                shutil.rmtree(target)
+            shutil.copytree(source, target)
+            byte_size = sum(path.stat().st_size for path in target.rglob("*") if path.is_file())
+            checksum = ""
+        else:
+            shutil.copy2(source, target)
+            byte_size = target.stat().st_size
+            checksum = hashlib.sha256(target.read_bytes()).hexdigest()
+        return {
+            "id": str(payload.get("id") or f"file_{int(now() * 1000)}"),
+            "resource_type": payload.get("resource_type"),
+            "resource_id": payload.get("resource_id"),
+            "status": "available",
+            "local_path": str(target),
+            "byte_size": byte_size,
+            "checksum_sha256": checksum,
+        }
+
+    @app.get(f"{route_prefix}/compute/files/{{file_id}}/download")
+    async def download_file(file_id: str) -> FileResponse:
+        upload_root = Path(os.getenv("YG_FT_DATA_ROOT", "/data/yg-ft")) / "uploads"
+        matches = list(upload_root.glob(f"{file_id}_*"))
+        if not matches:
+            raise HTTPException(status_code=404, detail="file not found")
+        return FileResponse(matches[0])
+
+    return app
+
+
+app = create_app()

compute/engines/__init__.py

@@ -0,0 +1 @@
+"""Training engine adapters package."""

compute/engines/llama_factory/__init__.py

@@ -0,0 +1 @@
+"""LLaMA-Factory engine adapter package."""

compute/engines/llama_factory/adapter.py

@@ -0,0 +1,299 @@
+from __future__ import annotations
+
+import json
+import re
+from dataclasses import dataclass
+from pathlib import Path
+from typing import Any
+
+
+@dataclass(frozen=True)
+class LlamaFactoryCommand:
+    command: list[str]
+    work_dir: str
+    env: dict[str, str]
+
+
+def _load_dataset_preview(path: Path) -> list[dict[str, Any]]:
+    if not path.exists():
+        return []
+    text = path.read_text(encoding="utf-8", errors="replace").strip()
+    if not text:
+        return []
+    if path.suffix.lower() == ".jsonl":
+        items: list[dict[str, Any]] = []
+        for line in text.splitlines()[:20]:
+            line = line.strip()
+            if not line:
+                continue
+            value = json.loads(line)
+            if isinstance(value, dict):
+                items.append(value)
+        return items
+    value = json.loads(text)
+    if isinstance(value, list):
+        return [item for item in value[:20] if isinstance(item, dict)]
+    if isinstance(value, dict):
+        return [value]
+    return []
+
+
+def _validate_dataset_columns(config: dict[str, Any]) -> list[str]:
+    dataset_dir = config.get("dataset_dir")
+    dataset_info = config.get("dataset_info")
+    if not dataset_dir or not isinstance(dataset_info, dict):
+        return []
+    root = Path(str(dataset_dir))
+    errors: list[str] = []
+    for dataset_key, item in dataset_info.items():
+        if not isinstance(item, dict):
+            continue
+        file_name = item.get("file_name")
+        file_names = file_name if isinstance(file_name, list) else [file_name]
+        columns = item.get("columns") if isinstance(item.get("columns"), dict) else {}
+        required_columns = [str(value) for value in columns.values() if value]
+        for name in file_names:
+            if not name:
+                continue
+            path = root / str(name).lstrip("/\\")
+            if not path.exists():
+                continue
+            try:
+                preview_rows = _load_dataset_preview(path)
+            except Exception as exc:  # noqa: BLE001 - expose malformed data as validation error
+                errors.append(f"dataset file parse failed: {path}: {exc}")
+                continue
+            if not preview_rows:
+                errors.append(f"dataset file has no valid object records: {path}")
+                continue
+            available = set().union(*(row.keys() for row in preview_rows))
+            missing = [column for column in required_columns if column not in available]
+            if missing:
+                errors.append(
+                    f"dataset columns missing in {path.name} for {dataset_key}: {', '.join(sorted(set(missing)))}"
+                )
+    return errors
+
+
+def validate_config(config: dict[str, Any]) -> list[str]:
+    errors: list[str] = []
+    if not config.get("base_model") and not config.get("model_name_or_path"):
+        errors.append("base_model or model_name_or_path is required")
+    if not config.get("dataset") and not config.get("dataset_dir"):
+        errors.append("dataset or dataset_dir is required")
+    try:
+        learning_rate = float(config.get("learning_rate", 0.0002))
+    except (TypeError, ValueError):
+        learning_rate = 0
+    if learning_rate <= 0:
+        errors.append("learning_rate must be greater than zero")
+    try:
+        epochs = int(config.get("n_epochs", config.get("num_train_epochs", 1)))
+    except (TypeError, ValueError):
+        epochs = 0
+    if epochs <= 0:
+        errors.append("n_epochs must be greater than zero")
+    dataset_dir = config.get("dataset_dir")
+    dataset_info = config.get("dataset_info")
+    if config.get("require_dataset_files") and dataset_dir and isinstance(dataset_info, dict):
+        root = Path(str(dataset_dir))
+        for dataset_key, item in dataset_info.items():
+            if not isinstance(item, dict):
+                errors.append(f"dataset_info entry must be object: {dataset_key}")
+                continue
+            file_name = item.get("file_name")
+            file_names = file_name if isinstance(file_name, list) else [file_name]
+            for name in file_names:
+                if not name:
+                    errors.append(f"dataset_info file_name is required: {dataset_key}")
+                    continue
+                path = root / str(name).lstrip("/\\")
+                if not path.exists():
+                    errors.append(f"dataset file not found: {path}")
+        errors.extend(_validate_dataset_columns(config))
+    return errors
+
+
+def _optional_arg(config: dict[str, Any], command: list[str], option: str, *keys: str) -> None:
+    for key in keys:
+        value = config.get(key)
+        if value is not None and value != "":
+            command.extend([option, str(value)])
+            return
+
+
+def _optional_bool_arg(config: dict[str, Any], command: list[str], option: str, *keys: str) -> None:
+    for key in keys:
+        value = config.get(key)
+        if value is True or str(value).lower() == "true":
+            command.extend([option, "true"])
+            return
+
+
+def _normalize_stage(config: dict[str, Any]) -> str:
+    raw = str(config.get("stage") or config.get("train_type") or "sft").strip().lower()
+    return {
+        "sft": "sft",
+        "dpo": "dpo",
+        "cpt": "pt",
+        "pt": "pt",
+        "pretrain": "pt",
+        "rm": "rm",
+        "ppo": "ppo",
+        "kto": "kto",
+    }.get(raw, raw or "sft")
+
+
+def prepare_runtime_files(config: dict[str, Any]) -> list[dict[str, str]]:
+    dataset_dir = config.get("dataset_dir")
+    dataset_info = config.get("dataset_info")
+    if not dataset_dir or not isinstance(dataset_info, dict):
+        return []
+    root = Path(str(dataset_dir))
+    root.mkdir(parents=True, exist_ok=True)
+    path = root / "dataset_info.json"
+    existing: dict[str, Any] = {}
+    if path.exists():
+        try:
+            loaded = json.loads(path.read_text(encoding="utf-8"))
+            existing = loaded if isinstance(loaded, dict) else {}
+        except json.JSONDecodeError:
+            existing = {}
+    existing.update(dataset_info)
+    path.write_text(json.dumps(existing, ensure_ascii=False, indent=2), encoding="utf-8")
+    return [{"name": "dataset_info", "path": str(path)}]
+
+
+def build_command(config: dict[str, Any], llama_factory_home: str = "/app/LLaMA-Factory") -> LlamaFactoryCommand:
+    engine = str(config.get("engine") or config.get("training_engine") or "llama_factory")
+    if engine in {"merge", "export", "llama_factory_export"}:
+        model_path = config.get("base_model") or config.get("model_name_or_path") or config.get("base_model_path")
+        adapter_path = config.get("adapter_name_or_path") or config.get("adapter_path") or config.get("lora_path")
+        output_dir = config.get("output_dir") or config.get("export_dir")
+        errors: list[str] = []
+        if not model_path:
+            errors.append("base_model or model_name_or_path is required")
+        if not adapter_path and engine == "merge":
+            errors.append("adapter_name_or_path or adapter_path is required")
+        if not output_dir:
+            errors.append("output_dir or export_dir is required")
+        if errors:
+            raise ValueError("; ".join(errors))
+        command = [
+            "llamafactory-cli",
+            "export",
+            "--model_name_or_path",
+            str(model_path),
+            "--template",
+            str(config.get("template", "qwen")),
+            "--finetuning_type",
+            str(config.get("train_method", config.get("finetuning_type", "lora"))),
+            "--export_dir",
+            str(output_dir),
+            "--export_size",
+            str(config.get("export_size", 2)),
+            "--export_device",
+            str(config.get("export_device", "cpu")),
+            "--export_legacy_format",
+            str(config.get("export_legacy_format", False)).lower(),
+        ]
+        if adapter_path:
+            command.extend(["--adapter_name_or_path", str(adapter_path)])
+        quantization_bit = int(config.get("export_quantization_bit", config.get("quantization_bit", 0)) or 0)
+        if quantization_bit in {4, 8}:
+            command.extend(["--quantization_bit", str(quantization_bit)])
+        return LlamaFactoryCommand(command=command, work_dir=str(Path(llama_factory_home)), env={})
+
+    errors = validate_config(config)
+    if errors:
+        raise ValueError("; ".join(errors))
+
+    if engine == "smoke":
+        output_dir = config.get("output_dir") or f"/data/yg-ft/outputs/{config.get('name', 'training-smoke')}"
+        script = (
+            "import json, os, time; "
+            f"out={str(output_dir)!r}; "
+            "os.makedirs(out, exist_ok=True); "
+            "print('[INFO] smoke training started', flush=True); "
+            "\nfor step in range(1, 7):\n"
+            "    loss=round(1.8/(step+1), 4)\n"
+            "    lr=round(0.0002*(1-step/10), 8)\n"
+            "    print({'loss': loss, 'grad_norm': round(0.4 + step*0.03, 4), 'learning_rate': lr, 'epoch': round(step/6, 4)}, flush=True)\n"
+            "    time.sleep(0.4)\n"
+            "\nopen(os.path.join(out, 'adapter_config.json'), 'w', encoding='utf-8').write(json.dumps({'engine':'smoke','status':'completed'})); "
+            "print('***** train metrics *****', flush=True); "
+            "print('train_loss = 0.12', flush=True); "
+            "print('***** train metrics end *****', flush=True)"
+        )
+        return LlamaFactoryCommand(command=["python", "-u", "-c", script], work_dir="/app", env={})
+
+    model_path = config.get("base_model") or config.get("model_name_or_path")
+    dataset = config.get("dataset") or config.get("dataset_name")
+    dataset_dir = config.get("dataset_dir")
+    output_dir = config.get("output_dir") or f"/data/yg-ft/outputs/{config.get('name', 'training-job')}"
+    command = [
+        "llamafactory-cli",
+        "train",
+        "--stage",
+        _normalize_stage(config),
+        "--do_train",
+        "true",
+        "--model_name_or_path",
+        str(model_path),
+        "--dataset",
+        str(dataset or "default"),
+        "--template",
+        str(config.get("template", "qwen")),
+        "--finetuning_type",
+        str(config.get("train_method", config.get("finetuning_type", "lora"))),
+        "--output_dir",
+        str(output_dir),
+        "--per_device_train_batch_size",
+        str(config.get("batch_size", 2)),
+        "--learning_rate",
+        str(config.get("learning_rate", 0.0002)),
+        "--num_train_epochs",
+        str(config.get("n_epochs", 3)),
+        "--save_steps",
+        str(config.get("save_steps", 50)),
+        "--logging_steps",
+        str(config.get("logging_steps", 10)),
+        "--overwrite_output_dir",
+        "true",
+        "--plot_loss",
+        "true",
+    ]
+    if dataset_dir:
+        command.extend(["--dataset_dir", str(dataset_dir)])
+    eval_dataset = config.get("eval_dataset")
+    if eval_dataset:
+        command.extend(["--eval_dataset", str(eval_dataset), "--do_eval", "true"])
+    _optional_arg(config, command, "--cutoff_len", "max_length", "cutoff_len")
+    _optional_arg(config, command, "--lr_scheduler_type", "lr_scheduler_type")
+    _optional_arg(config, command, "--warmup_ratio", "warmup_ratio")
+    _optional_arg(config, command, "--weight_decay", "weight_decay")
+    _optional_arg(config, command, "--lora_rank", "lora_rank", "rank")
+    _optional_arg(config, command, "--lora_alpha", "lora_alpha")
+    _optional_arg(config, command, "--lora_dropout", "lora_dropout")
+    _optional_arg(config, command, "--gradient_accumulation_steps", "gradient_accumulation_steps")
+    if not eval_dataset:
+        _optional_arg(config, command, "--val_size", "val_size")
+    _optional_arg(config, command, "--max_samples", "max_samples")
+    _optional_arg(config, command, "--preprocessing_num_workers", "preprocessing_num_workers")
+    _optional_bool_arg(config, command, "--fp16", "fp16")
+    _optional_bool_arg(config, command, "--bf16", "bf16")
+    quantization_bit = int(config.get("quantization_bit", 0) or 0)
+    if quantization_bit in {4, 8}:
+        command.extend(["--quantization_bit", str(quantization_bit)])
+    return LlamaFactoryCommand(command=command, work_dir=str(Path(llama_factory_home)), env={})
+
+
+def parse_log_line(line: str) -> dict[str, float] | None:
+    if "loss" not in line or "learning_rate" not in line:
+        return None
+    result: dict[str, float] = {}
+    for key in ["loss", "grad_norm", "learning_rate", "epoch"]:
+        match = re.search(rf"['\"]?{key}['\"]?\s*:\s*([-+]?\d+(?:\.\d+)?(?:[eE][-+]?\d+)?)", line)
+        if match:
+            result[key] = float(match.group(1))
+    return result or None

compute/file_gateway/__init__.py

@@ -0,0 +1 @@
+"""Local file gateway package."""

compute/requirements.txt

@@ -0,0 +1,6 @@
+fastapi>=0.111.0
+uvicorn[standard]>=0.30.0
+python-multipart>=0.0.9
+pydantic>=2.7.0
+python-dotenv>=1.0.1
+httpx>=0.27.0

compute/tests/__init__.py

@@ -0,0 +1 @@
+"""Compute platform tests package."""

compute/tests/test_llama_factory_adapter.py

@@ -0,0 +1,23 @@
+from __future__ import annotations
+
+from compute.engines.llama_factory.adapter import build_command
+
+
+def test_build_command_uses_explicit_validation_dataset_without_resplitting() -> None:
+    result = build_command(
+        {
+            "base_model": "/models/qwen",
+            "dataset": "ygft_dataset_train",
+            "eval_dataset": "ygft_dataset_validation",
+            "dataset_dir": "/datasets/example",
+            "output_dir": "/outputs/example",
+            "val_size": 0.1,
+        }
+    )
+
+    assert result.command[result.command.index("--dataset") + 1] == "ygft_dataset_train"
+    assert result.command[result.command.index("--eval_dataset") + 1] == (
+        "ygft_dataset_validation"
+    )
+    assert "--do_eval" in result.command
+    assert "--val_size" not in result.command

docker/README.md

@@ -0,0 +1,299 @@
+# Docker 部署说明
+
+本目录按应用服务器和算力服务器拆分 Dockerfile 与 Docker Compose 文件。Compose 文件不包含 `build:`，不会在 `docker compose up` 时自动构建业务镜像。所有业务镜像需要先通过手动 `docker build` 构建，再由 Compose 启动。
+
+## 基础镜像
+
+| 镜像 | 用途 |
+| --- | --- |
+| `python:3.12-slim` | 应用后端基础镜像，后端运行环境要求 Python 3.12 及以上 |
+| `nginx:1.27-alpine` | 前端静态资源与 `/modelTF` 反向代理运行镜像 |
+| `hiyouga/llamafactory:latest` | 算力服务基础镜像，基于 LLaMA-Factory 官方镜像扩展 Compute API |
+| `postgres:16-alpine` | 开发阶段内置 PostgreSQL |
+| `redis:7-alpine` | 开发阶段内置 Redis |
+
+一键拉取基础镜像：
+
+```bash
+docker pull python:3.12-slim && \
+docker pull nginx:1.27-alpine && \
+docker pull hiyouga/llamafactory:latest && \
+docker pull postgres:16-alpine && \
+docker pull redis:7-alpine
+```
+
+Windows PowerShell：
+
+```powershell
+$images = @(
+  "python:3.12-slim",
+  "nginx:1.27-alpine",
+  "hiyouga/llamafactory:latest",
+  "postgres:16-alpine",
+  "redis:7-alpine"
+)
+$images | ForEach-Object { docker pull $_ }
+```
+
+如果部署环境不能访问外网，需要提前在可联网环境执行上述拉取命令，再用 `docker save` / `docker load` 导出导入。
+
+## 业务镜像
+
+| 镜像 | Dockerfile | 构建命令 |
+| --- | --- | --- |
+| `yg-ft-backend-api:latest` | `docker/app/Dockerfile.backend` | `docker build -f docker/app/Dockerfile.backend -t yg-ft-backend-api:latest .` |
+| `yg-ft-frontend-runtime:latest` | `docker/app/Dockerfile.frontend` | `docker build -f docker/app/Dockerfile.frontend -t yg-ft-frontend-runtime:latest .` |
+| `yg-ft-compute-api:latest` | `docker/compute/Dockerfile.compute` | `docker build -f docker/compute/Dockerfile.compute -t yg-ft-compute-api:latest .` |
+
+## 对外端口
+
+所有宿主机对外端口统一使用 5 位端口。容器内部端口保持镜像默认端口，便于容器内服务和健康检查稳定。
+
+| 服务 | 宿主机对外端口 | 容器内部端口 | 说明 |
+| --- | --- | --- | --- |
+| 前端 Nginx | `16801` | `80` | 前端页面入口 |
+| 后端 API | `17861` | `8000` | FastAPI 服务 |
+| PostgreSQL | `15432` | `5432` | 开发阶段内置数据库 |
+| Redis | `16379` | `6379` | 开发阶段内置缓存 |
+| Compute API | `19100` | `9100` | 算力服务器 API |
+| File Gateway | `19101` | `9100` | 当前由 Compute API 暴露文件网关契约，后续可拆为独立服务 |
+
+注意：`8000` 是后端容器内部端口，不作为宿主机对外访问端口。宿主机或浏览器应访问 `http://<app-server-ip>:17861/modelTF/health`；前端 Nginx 容器在 Docker 网络内部访问 `http://backend-api:8000/modelTF/...`。
+
+对应配置文件：
+
+- `docker/app/.env.example`
+  - `FRONTEND_PORT=16801`
+  - `BACKEND_API_PORT=17861`
+  - `POSTGRES_PORT=15432`
+  - `REDIS_PORT=16379`
+- `docker/compute/.env.example`
+  - `COMPUTE_API_PORT=19100`
+  - `FILE_GATEWAY_PORT=19101`
+
+## 运行模式
+
+- 应用侧默认 `COMPUTE_MODE=real`，任务状态必须由真实算力同步逻辑更新。
+- 算力侧默认 `COMPUTE_EXECUTION_MODE=real`，真实执行器未完成前不会伪造训练作业。
+- 仅隔离联调时可显式设置 `COMPUTE_MODE=simulator` 或 `COMPUTE_EXECUTION_MODE=simulator`，该模式不得用于测试环境、生产环境或生产升级基线。
+
+## 应用服务器部署
+
+应用服务器包含前端 Nginx、Backend API、PostgreSQL、Redis。
+
+当前 Compose 内置 PostgreSQL 使用 `backend/app/db/sql/001_platform_runtime.sql` 初始化运行库。`docs/postgres-schema.sql` 是完整目标架构设计，不应直接挂载为当前运行库初始化脚本，否则会与当前后端代码的运行表结构不兼容。
+
+首次部署：
+
+```bash
+cd <repo-root>
+
+# 1. 使用当前 Windows/宿主机 npm 构建前端静态产物
+cd frontend
+npm ci
+npm run build
+cd ..
+
+# 2. 手动构建业务镜像
+docker build -f docker/app/Dockerfile.backend -t yg-ft-backend-api:latest .
+docker build -f docker/app/Dockerfile.frontend -t yg-ft-frontend-runtime:latest .
+
+# 3. 启动应用服务
+cd docker/app
+cp .env.example .env
+docker compose up -d
+```
+
+后端镜像构建过程中会执行依赖导入自检，确认 `fastapi`、`uvicorn`、`psycopg`、`sqlalchemy`、`redis` 等运行依赖已安装。构建后也可以手动检查：
+
+```bash
+docker run --rm yg-ft-backend-api:latest python -c "import psycopg; print(psycopg.__version__)"
+```
+
+默认访问地址：
+
+```text
+http://<app-server-ip>:16801
+```
+
+应用侧代码和数据外挂：
+
+```text
+../../backend -> /app
+../../frontend/dist -> /usr/share/nginx/html
+../../runtime/app/logs/backend -> /opt/yg-ft/logs/backend
+../../runtime/app/data -> /data/yg-ft
+```
+
+前端容器启动前必须确保 `../../frontend/dist/index.html` 已存在。若前端 Nginx 日志出现 `directory index of "/usr/share/nginx/html/" is forbidden` 或 `rewrite or internal redirection cycle while internally redirecting to "/index.html"`，通常表示当前执行 `docker compose` 的项目目录下没有构建好的 `frontend/dist`，或挂载路径不是同一份代码目录。
+
+```bash
+# 在执行 docker compose 的同一份代码目录中检查
+cd <repo-root>/frontend
+npm run build
+test -f dist/index.html && ls -lh dist/index.html
+
+cd ../docker/app
+docker compose up -d --force-recreate frontend
+docker compose logs --tail=80 frontend
+```
+
+如果使用 Windows npm 构建、WSL 中运行 Docker Compose，需要确认 Windows 路径和 WSL 路径指向同一份仓库。例如在 `D:\...\YG_FT\frontend` 构建不会自动生成 `/mnt/d/wuyongtao/Code/YG_FT/frontend/dist` 下的产物，除非二者本就是同一个目录。
+
+如果使用企业统一 PostgreSQL/Redis，修改 `docker/app/.env`：
+
+如果前端 Nginx 日志出现 `open() "/usr/share/nginx/html/modelTF/login" failed` 或 `open() "/usr/share/nginx/html/login" failed`，说明当前容器没有加载项目的 Nginx 代理配置，`/modelTF/*` 被当成静态文件查找。处理方式：
+
+```bash
+cd <repo-root>/docker/app
+docker compose up -d --force-recreate frontend
+docker compose exec frontend nginx -T | grep -n "location.*modelTF" -A12
+```
+
+正常配置中应存在 `location ^~ /modelTF/`，并代理到 `BACKEND_PROXY_PASS`，默认是 `http://backend-api:8000`。
+
+```env
+DATABASE_URL=postgresql+psycopg://<user>:<password>@<postgres-host>:15432/<db>
+REDIS_URL=redis://<redis-host>:16379/0
+USE_BUILTIN_POSTGRES=false
+USE_BUILTIN_REDIS=false
+```
+
+生产环境如完全使用外部基础设施，可以删除或注释 Compose 中的 `postgres`、`redis` 服务及 `backend-api.depends_on` 中对应依赖。
+
+## 算力服务器部署
+
+算力服务器包含 Compute API、后续 Compute Agent、File Gateway、GPU runtime、本地训练数据目录和 LLaMA-Factory。`Dockerfile.compute` 基于 LLaMA-Factory 官方镜像：
+
+```dockerfile
+FROM hiyouga/llamafactory:latest
+```
+
+部署前需要安装：
+
+- NVIDIA Driver
+- NVIDIA Container Toolkit
+- Docker Engine 和 Docker Compose Plugin
+- 本地训练数据目录，默认 `/data/yg-ft`
+
+首次部署：
+
+```bash
+cd <repo-root>
+
+# 手动构建算力业务镜像
+docker build -f docker/compute/Dockerfile.compute -t yg-ft-compute-api:latest .
+
+# 启动算力服务
+cd docker/compute
+cp .env.example .env
+docker compose up -d
+```
+
+健康检查：
+
+```text
+GET http://<compute-server-ip>:19100/modelTF/health
+GET http://<compute-server-ip>:19100/modelTF/v1/compute/health
+```
+
+算力侧代码和数据外挂：
+
+```text
+../../compute -> /app/compute
+${YG_FT_DATA_ROOT_HOST} -> /data/yg-ft
+${YG_FT_MODEL_ROOT_HOST} -> /data/yg-ft/models
+${YG_FT_DATASET_ROOT_HOST} -> /data/yg-ft/datasets
+${YG_FT_OUTPUT_ROOT_HOST} -> /data/yg-ft/outputs
+${COMPUTE_LOG_ROOT_HOST} -> /opt/yg-ft/logs/compute
+${TRAINING_LOG_ROOT_HOST} -> /opt/yg-ft/logs/training
+```
+
+算力服务器启动前必须先在宿主机创建持久化目录，基座模型、训练数据、训练产物和训练日志都应落在宿主机磁盘上，不能只写入容器层。推荐默认目录：
+
+```bash
+cd <repo-root>/docker/compute
+mkdir -p data/yg-ft/models \
+  data/yg-ft/datasets \
+  data/yg-ft/outputs \
+  data/yg-ft/logs/compute \
+  data/yg-ft/logs/training
+```
+
+默认 `docker/compute/.env.example` 使用 `./data/yg-ft`，该相对路径以 `docker/compute/docker-compose.yml` 所在目录为基准，因此实际宿主机目录是 `<repo-root>/docker/compute/data/yg-ft`。如企业环境模型盘、数据盘、产物盘分盘挂载，可在 `docker/compute/.env` 中分别调整 `YG_FT_MODEL_ROOT_HOST`、`YG_FT_DATASET_ROOT_HOST`、`YG_FT_OUTPUT_ROOT_HOST`、`COMPUTE_LOG_ROOT_HOST`、`TRAINING_LOG_ROOT_HOST`，容器内路径建议保持 `/data/yg-ft/models`、`/data/yg-ft/datasets`、`/data/yg-ft/outputs`，避免训练参数和节点配置复杂化。
+
+页面上传数据集时，文件先进入 Backend API，再由 Backend API 调用目标算力节点的 `POST /modelTF/compute/files/upload`，写入容器内 `/data/yg-ft/datasets/{dataset_id}/`。在默认开发配置下，宿主机可在 `<repo-root>/docker/compute/data/yg-ft/datasets/{dataset_id}/` 看到对应文件。仅创建 bind mount 不会自动让应用侧上传文件出现在算力目录，必须通过这条 File Gateway 链路同步。
+
+## 应用与算力分离部署
+
+应用服务器只需要主动访问算力服务器，不要求算力服务器回调应用服务器。
+
+在 `docker/app/.env` 中配置：
+
+```env
+COMPUTE_API_BASE_URL=http://<compute-server-ip>:19100
+FILE_GATEWAY_BASE_URL=http://<compute-server-ip>:19101
+COMPUTE_SERVICE_TOKEN=change_me
+COMPUTE_STATUS_SYNC_MODE=polling
+COMPUTE_POLL_INTERVAL_SECONDS=3
+COMPUTE_POLL_BATCH_SIZE=100
+```
+
+交互链路：
+
+```text
+Frontend
+  -> Backend API
+    -> Compute API
+      -> Compute Agent / LLaMA-Factory
+      -> 本地数据目录 / 模型目录 / 训练产物
+    <- Backend Worker 定时轮询 Compute API
+```
+
+算力服务默认开启服务间鉴权。`docker/compute/.env` 中保持 `COMPUTE_AUTH_ENABLED=true`，并确保 `COMPUTE_SERVICE_TOKEN` 与 `docker/app/.env` 一致；健康检查路径仍可用于容器探活。
+
+## 多算力节点部署
+
+多算力节点仍按“单机多 GPU 节点”部署。每台 GPU 服务器都独立部署一套 `docker/compute`：
+
+```text
+gpu-node-01: docker/compute + /data/yg-ft + 19100/19101
+gpu-node-02: docker/compute + /data/yg-ft + 19100/19101
+gpu-node-03: docker/compute + /data/yg-ft + 19100/19101
+```
+
+节点之间默认不互访。应用平台主动访问每个节点的 Compute API/File Gateway，并通过 `compute_nodes`、`resource_replicas`、`resource_sync_jobs` 统一调度和同步。
+
+节点地址、权重、标签、启用状态和本地路径在前端“算力节点”页面动态维护。新增或编辑节点后，点击“测试”会由 Backend API 主动访问该节点的 `GET /modelTF/v1/compute/health` 和 `GET /modelTF/compute/resources/gpus`，并把健康信息与 GPU 清单同步到 PostgreSQL。
+
+## 常用命令
+
+重新构建应用镜像：
+
+```bash
+docker build -f docker/app/Dockerfile.backend -t yg-ft-backend-api:latest .
+docker build -f docker/app/Dockerfile.frontend -t yg-ft-frontend-runtime:latest .
+```
+
+重新构建算力镜像：
+
+```bash
+docker build -f docker/compute/Dockerfile.compute -t yg-ft-compute-api:latest .
+```
+
+启动服务：
+
+```bash
+cd docker/app
+docker compose up -d
+
+cd ../compute
+docker compose up -d
+```
+
+查看服务：
+
+```bash
+docker compose ps
+docker compose logs -f
+```

docker/app/.env

@@ -0,0 +1,46 @@
+APP_ENV=prod
+APP_NAME=YG Fine-Tune Platform API
+MODELTF_ROUTE_PREFIX=/modelTF
+CORS_ALLOW_ORIGINS=http://localhost:16801,http://127.0.0.1:16801
+
+FRONTEND_IMAGE=yg-ft-frontend-runtime:latest
+BACKEND_API_IMAGE=yg-ft-backend-api:latest
+
+# Five-digit host ports exposed outside the application server.
+FRONTEND_PORT=16801
+BACKEND_API_PORT=17861
+POSTGRES_PORT=15432
+REDIS_PORT=16379
+
+POSTGRES_DB=yg_ft
+POSTGRES_USER=root
+POSTGRES_PASSWORD=8811614287327Leo
+DATABASE_URL=postgresql+psycopg://root:8811614287327Leo@www.caoxiaozhu.com:5432/yg_ft
+
+REDIS_URL=redis://redis:6379/0
+
+# PostgreSQL uses the shared external database. The local postgres service is disabled in docker-compose.yml.
+# Redis still uses the built-in service during current development.
+USE_BUILTIN_POSTGRES=false
+USE_BUILTIN_REDIS=true
+
+LOG_LEVEL=INFO
+LOG_DIR=/opt/yg-ft/logs/backend
+LOG_FILE_PREFIX=backend
+LOG_ERROR_FILE_PREFIX=error
+LOG_MAX_BYTES=20971520
+LOG_RETENTION_DAYS=10
+
+BACKEND_PROXY_PASS=http://backend-api:8000
+
+# Split deployment: set these to the compute server address, for example http://10.10.20.31:19100.
+COMPUTE_API_BASE_URL=http://compute-api:9100
+COMPUTE_SERVICE_TOKEN=change_me
+FILE_GATEWAY_BASE_URL=http://compute-api:9101
+
+# The application side polls Compute API for job state to avoid opening reverse network access.
+COMPUTE_MODE=real
+COMPUTE_STATUS_SYNC_MODE=polling
+COMPUTE_POLL_INTERVAL_SECONDS=10
+COMPUTE_POLL_BATCH_SIZE=100
+COMPUTE_REQUEST_TIMEOUT_SECONDS=5

docker/app/Dockerfile.backend

@@ -0,0 +1,21 @@
+FROM python:3.12-slim
+
+ENV PYTHONDONTWRITEBYTECODE=1 \
+    PYTHONUNBUFFERED=1 \
+    PIP_NO_CACHE_DIR=1
+
+WORKDIR /app
+
+COPY backend/requirements.txt /tmp/requirements.txt
+RUN pip install --upgrade pip -i https://pypi.tuna.tsinghua.edu.cn/simple \
+    && pip install -r /tmp/requirements.txt -i https://pypi.tuna.tsinghua.edu.cn/simple \
+    && rm -f /tmp/requirements.txt
+
+RUN python -c "import fastapi, uvicorn, psycopg, sqlalchemy, redis, jwt, passlib, httpx, alembic; print('backend dependency check ok')"
+
+RUN mkdir -p /opt/yg-ft/logs/backend /data/yg-ft \
+    && chmod -R 0775 /opt/yg-ft /data/yg-ft
+
+EXPOSE 8000
+
+CMD ["uvicorn", "app.main:app", "--host", "0.0.0.0", "--port", "8000"]

docker/app/Dockerfile.frontend

@@ -0,0 +1,9 @@
+
+FROM nginx:1.27-alpine
+
+RUN mkdir -p /usr/share/nginx/html
+
+EXPOSE 80
+
+HEALTHCHECK --interval=30s --timeout=3s --start-period=10s --retries=3 \
+  CMD test -f /usr/share/nginx/html/index.html && wget -qO- http://127.0.0.1/index.html >/dev/null || exit 1

docker/app/docker-compose.yml

@@ -0,0 +1,126 @@
+services:
+  frontend:
+    image: ${FRONTEND_IMAGE:-yg-ft-frontend-runtime:latest}
+    container_name: yg-ft-frontend
+    depends_on:
+      backend-api:
+        condition: service_started
+    ports:
+      - "${FRONTEND_PORT:-16801}:80"
+    environment:
+      BACKEND_PROXY_PASS: ${BACKEND_PROXY_PASS:-http://backend-api:8000}
+    volumes:
+      - ../../frontend/dist:/usr/share/nginx/html:ro
+      - ../nginx.conf.template:/etc/nginx/templates/default.conf.template:ro
+    command:
+      - /bin/sh
+      - -c
+      - |
+        if [ ! -f /usr/share/nginx/html/index.html ]; then
+          echo "frontend dist is missing: build frontend first and ensure ../../frontend/dist is mounted";
+          ls -la /usr/share/nginx/html;
+          exit 1;
+        fi;
+        envsubst '$$BACKEND_PROXY_PASS' < /etc/nginx/templates/default.conf.template > /etc/nginx/conf.d/default.conf;
+        nginx -t;
+        nginx -g 'daemon off;'
+    networks:
+      - yg-ft-app
+    restart: unless-stopped
+
+  backend-api:
+    image: ${BACKEND_API_IMAGE:-yg-ft-backend-api:latest}
+    container_name: yg-ft-backend-api
+    depends_on:
+      redis:
+        condition: service_healthy
+    expose:
+      - "8000"
+    ports:
+      - "${BACKEND_API_PORT:-17861}:8000"
+    environment:
+      APP_ENV: ${APP_ENV:-prod}
+      APP_NAME: ${APP_NAME:-YG Fine-Tune Platform API}
+      MODELTF_ROUTE_PREFIX: ${MODELTF_ROUTE_PREFIX:-/modelTF}
+      CORS_ALLOW_ORIGINS: ${CORS_ALLOW_ORIGINS:-http://localhost:16801,http://127.0.0.1:16801}
+      DATABASE_URL: ${DATABASE_URL:-postgresql+psycopg://root:8811614287327Leo@www.caoxiaozhu.com:5432/yg_ft}
+      REDIS_URL: ${REDIS_URL:-redis://redis:6379/0}
+      USE_BUILTIN_POSTGRES: ${USE_BUILTIN_POSTGRES:-false}
+      USE_BUILTIN_REDIS: ${USE_BUILTIN_REDIS:-true}
+      LOG_LEVEL: ${LOG_LEVEL:-INFO}
+      LOG_DIR: ${LOG_DIR:-/opt/yg-ft/logs/backend}
+      LOG_FILE_PREFIX: ${LOG_FILE_PREFIX:-backend}
+      LOG_ERROR_FILE_PREFIX: ${LOG_ERROR_FILE_PREFIX:-error}
+      LOG_MAX_BYTES: ${LOG_MAX_BYTES:-20971520}
+      LOG_RETENTION_DAYS: ${LOG_RETENTION_DAYS:-10}
+      COMPUTE_API_BASE_URL: ${COMPUTE_API_BASE_URL:-http://compute-api:9100}
+      COMPUTE_SERVICE_TOKEN: ${COMPUTE_SERVICE_TOKEN:-change_me}
+      FILE_GATEWAY_BASE_URL: ${FILE_GATEWAY_BASE_URL:-http://compute-api:9101}
+      COMPUTE_MODE: ${COMPUTE_MODE:-real}
+      COMPUTE_STATUS_SYNC_MODE: ${COMPUTE_STATUS_SYNC_MODE:-polling}
+      COMPUTE_POLL_INTERVAL_SECONDS: ${COMPUTE_POLL_INTERVAL_SECONDS:-3}
+      COMPUTE_POLL_BATCH_SIZE: ${COMPUTE_POLL_BATCH_SIZE:-100}
+      COMPUTE_REQUEST_TIMEOUT_SECONDS: ${COMPUTE_REQUEST_TIMEOUT_SECONDS:-5}
+      PYTHONPATH: /app
+    volumes:
+      - ../../backend:/app:ro
+      - ../../runtime/app/logs/backend:/opt/yg-ft/logs/backend
+      - ../../runtime/app/data:/data/yg-ft
+    networks:
+      - yg-ft-app
+    healthcheck:
+      test: ["CMD-SHELL", "python -c \"import urllib.request; urllib.request.urlopen('http://127.0.0.1:8000/modelTF/health', timeout=3).read()\""]
+      interval: 30s
+      timeout: 5s
+      retries: 3
+      start_period: 20s
+    restart: unless-stopped
+
+  # PostgreSQL uses the shared external database configured by DATABASE_URL in docker/app/.env.
+  # Keep this local service commented out unless development needs an isolated database again.
+  # postgres:
+  #   image: postgres:16-alpine
+  #   container_name: yg-ft-postgres
+  #   environment:
+  #     POSTGRES_DB: ${POSTGRES_DB:-yg_ft}
+  #     POSTGRES_USER: ${POSTGRES_USER:-yg_ft}
+  #     POSTGRES_PASSWORD: ${POSTGRES_PASSWORD:-change_me}
+  #     PGDATA: /var/lib/postgresql/data/pgdata
+  #   volumes:
+  #     - postgres_data:/var/lib/postgresql/data
+  #     - ../../backend/app/db/sql/001_platform_runtime.sql:/docker-entrypoint-initdb.d/001-platform-runtime.sql:ro
+  #   ports:
+  #     - "${POSTGRES_PORT:-15432}:5432"
+  #   networks:
+  #     - yg-ft-app
+  #   healthcheck:
+  #     test: ["CMD-SHELL", "pg_isready -U $${POSTGRES_USER} -d $${POSTGRES_DB}"]
+  #     interval: 10s
+  #     timeout: 5s
+  #     retries: 5
+  #   restart: unless-stopped
+
+  redis:
+    image: redis:7-alpine
+    container_name: yg-ft-redis
+    command: ["redis-server", "--appendonly", "yes"]
+    volumes:
+      - redis_data:/data
+    ports:
+      - "${REDIS_PORT:-16379}:6379"
+    networks:
+      - yg-ft-app
+    healthcheck:
+      test: ["CMD", "redis-cli", "ping"]
+      interval: 10s
+      timeout: 3s
+      retries: 5
+    restart: unless-stopped
+
+networks:
+  yg-ft-app:
+    name: yg-ft-app
+
+volumes:
+  # postgres_data:
+  redis_data:

docker/compute/.env

@@ -0,0 +1,40 @@
+COMPUTE_ENV=prod
+COMPUTE_HOST_ID=gpu-node-01
+COMPUTE_EXECUTION_MODE=real
+MODELTF_ROUTE_PREFIX=/modelTF
+# Five-digit host ports exposed outside the compute server.
+COMPUTE_API_PORT=19100
+FILE_GATEWAY_PORT=19101
+COMPUTE_API_IMAGE=yg-ft-compute-api:latest
+
+# The application server actively polls Compute API; compute server does not need reverse access.
+COMPUTE_AUTH_ENABLED=true
+COMPUTE_SERVICE_TOKEN=change_me
+ENABLE_APP_CALLBACK=false
+
+# LLaMA-Factory is provided by the official hiyouga/llamafactory base image.
+LLAMA_FACTORY_HOME=/app/LLaMA-Factory
+
+YG_FT_DATA_ROOT=/data/yg-ft
+YG_FT_DATA_ROOT_HOST=./data/yg-ft
+YG_FT_MODEL_ROOT=/data/yg-ft/models
+YG_FT_MODEL_ROOT_HOST=./data/yg-ft/models
+YG_FT_DATASET_ROOT=/data/yg-ft/datasets
+YG_FT_DATASET_ROOT_HOST=./data/yg-ft/datasets
+YG_FT_OUTPUT_ROOT=/data/yg-ft/outputs
+YG_FT_OUTPUT_ROOT_HOST=./data/yg-ft/outputs
+TRAINING_LOG_ROOT=/opt/yg-ft/logs/training
+TRAINING_LOG_ROOT_HOST=./data/yg-ft/logs/training
+COMPUTE_LOG_ROOT_HOST=./data/yg-ft/logs/compute
+
+# Optional fallback used when nvidia-smi is unavailable.
+# Leave COMPUTE_GPU_COUNT=0 on real GPU servers with working NVIDIA runtime.
+COMPUTE_GPU_COUNT=0
+COMPUTE_GPU_NAME=NVIDIA A800-SXM4-80GB
+COMPUTE_GPU_MEMORY_GB=80
+COMPUTE_GPU_POWER_LIMIT_W=300
+
+LOG_DIR=/opt/yg-ft/logs/compute
+CUDA_VISIBLE_DEVICES=all
+NVIDIA_VISIBLE_DEVICES=all
+NVIDIA_DRIVER_CAPABILITIES=compute,utility

docker/compute/.env.example

@@ -0,0 +1,44 @@
+COMPUTE_ENV=prod
+COMPUTE_HOST_ID=gpu-node-01
+COMPUTE_EXECUTION_MODE=real
+MODELTF_ROUTE_PREFIX=/modelTF
+# Five-digit host ports exposed outside the compute server.
+COMPUTE_API_PORT=19100
+FILE_GATEWAY_PORT=19101
+COMPUTE_API_IMAGE=yg-ft-compute-api:latest
+
+# The application server actively polls Compute API; compute server does not need reverse access.
+COMPUTE_AUTH_ENABLED=true
+COMPUTE_SERVICE_TOKEN=change_me
+ENABLE_APP_CALLBACK=false
+
+# LLaMA-Factory is provided by the official hiyouga/llamafactory base image.
+LLAMA_FACTORY_HOME=/app/LLaMA-Factory
+
+# Persistent host directories on the compute server.
+# Create these directories before starting docker compose. They are mounted into
+# the container so base models, datasets, training outputs and logs survive
+# container recreation or image upgrades.
+YG_FT_DATA_ROOT=/data/yg-ft
+YG_FT_DATA_ROOT_HOST=./data/yg-ft
+YG_FT_MODEL_ROOT=/data/yg-ft/models
+YG_FT_MODEL_ROOT_HOST=./data/yg-ft/models
+YG_FT_DATASET_ROOT=/data/yg-ft/datasets
+YG_FT_DATASET_ROOT_HOST=./data/yg-ft/datasets
+YG_FT_OUTPUT_ROOT=/data/yg-ft/outputs
+YG_FT_OUTPUT_ROOT_HOST=./data/yg-ft/outputs
+TRAINING_LOG_ROOT=/opt/yg-ft/logs/training
+TRAINING_LOG_ROOT_HOST=./data/yg-ft/logs/training
+COMPUTE_LOG_ROOT_HOST=./data/yg-ft/logs/compute
+
+# Optional fallback used when nvidia-smi is unavailable.
+# Leave COMPUTE_GPU_COUNT=0 on real GPU servers with working NVIDIA runtime.
+COMPUTE_GPU_COUNT=0
+COMPUTE_GPU_NAME=NVIDIA A800-SXM4-80GB
+COMPUTE_GPU_MEMORY_GB=80
+COMPUTE_GPU_POWER_LIMIT_W=300
+
+LOG_DIR=/opt/yg-ft/logs/compute
+CUDA_VISIBLE_DEVICES=all
+NVIDIA_VISIBLE_DEVICES=all
+NVIDIA_DRIVER_CAPABILITIES=compute,utility

docker/compute/Dockerfile.compute

@@ -0,0 +1,27 @@
+
+FROM hiyouga/llamafactory:latest
+
+ENV DEBIAN_FRONTEND=noninteractive \
+    PYTHONDONTWRITEBYTECODE=1 \
+    PYTHONUNBUFFERED=1 \
+    PIP_NO_CACHE_DIR=1
+
+WORKDIR /app
+
+RUN apt-get update \
+    && apt-get install -y --no-install-recommends tini \
+    && rm -rf /var/lib/apt/lists/*
+
+COPY compute/requirements.txt /tmp/requirements.txt
+RUN pip install --upgrade pip -i https://pypi.tuna.tsinghua.edu.cn/simple \
+    && pip install -r /tmp/requirements.txt -i https://pypi.tuna.tsinghua.edu.cn/simple \
+    && rm -f /tmp/requirements.txt
+
+RUN mkdir -p /opt/yg-ft/logs/compute /opt/yg-ft/logs/training /data/yg-ft /app/LLaMA-Factory \
+    && chmod -R 0775 /opt/yg-ft /data/yg-ft /app/LLaMA-Factory
+
+ENTRYPOINT ["/usr/bin/tini", "--"]
+
+EXPOSE 9100
+
+CMD ["uvicorn", "compute.api.main:app", "--host", "0.0.0.0", "--port", "9100"]

docker/compute/data/yg-ft/README.md

@@ -0,0 +1,38 @@
+# YG-FT Compute 数据目录说明
+
+本目录挂载到 `yg-ft-compute-api` 容器的 `/data/yg-ft`，用于持久化存储训练相关的数据。
+
+## 目录结构
+
+```
+data/yg-ft/
+├── datasets/     # 数据集存储目录
+├── models/       # 模型文件存储目录
+├── outputs/      # 训练/推理输出结果目录
+└── logs/
+    ├── compute/  # 计算服务运行日志
+    └── training/ # 训练任务执行日志
+```
+
+## 各目录说明
+
+### datasets/
+训练和评估所使用的数据集文件，包括 JSON、JSONL、CSV 等格式。数据集由用户上传或通过平台创建，供 LLaMA-Factory 等训练引擎读取。
+
+### models/
+存放模型文件，包括：
+- 预训练基座模型（如 LLaMA、Qwen 等）
+- 微调后的自定义模型权重
+- 合并后的部署模型
+
+### outputs/
+训练任务和推理任务的输出结果，包括：
+- 训练过程中的 checkpoint 文件
+- 评估结果和指标报告
+- 推理生成的结果文本
+
+### logs/compute/
+计算服务（compute-api）的运行时日志，用于排查服务启动、GPU 调度、健康检查等问题。
+
+### logs/training/
+各训练任务的执行日志，记录训练过程状态、报错信息等，便于追踪单个任务的运行情况。

docker/compute/data/yg-ft/datasets/.gitignore

@@ -0,0 +1,2 @@
+*
+!.gitignore

docker/compute/data/yg-ft/logs/compute/.gitignore

@@ -0,0 +1,2 @@
+*
+!.gitignore

docker/compute/data/yg-ft/logs/training/.gitignore

@@ -0,0 +1,2 @@
+*
+!.gitignore

docker/compute/data/yg-ft/models/.gitignore

@@ -0,0 +1,2 @@
+*
+!.gitignore

docker/compute/data/yg-ft/outputs/.gitignore

@@ -0,0 +1,2 @@
+*
+!.gitignore

docker/compute/docker-compose.yml

@@ -0,0 +1,53 @@
+services:
+  compute-api:
+    image: ${COMPUTE_API_IMAGE:-yg-ft-compute-api:latest}
+    container_name: yg-ft-compute-api
+    gpus: all
+    ports:
+      - "${COMPUTE_API_PORT:-19100}:9100"
+      - "${FILE_GATEWAY_PORT:-19101}:9100"
+    environment:
+      COMPUTE_ENV: ${COMPUTE_ENV:-prod}
+      COMPUTE_HOST_ID: ${COMPUTE_HOST_ID:-gpu-node-01}
+      COMPUTE_EXECUTION_MODE: ${COMPUTE_EXECUTION_MODE:-real}
+      MODELTF_ROUTE_PREFIX: ${MODELTF_ROUTE_PREFIX:-/modelTF}
+      COMPUTE_AUTH_ENABLED: ${COMPUTE_AUTH_ENABLED:-true}
+      COMPUTE_SERVICE_TOKEN: ${COMPUTE_SERVICE_TOKEN:-change_me}
+      ENABLE_APP_CALLBACK: ${ENABLE_APP_CALLBACK:-false}
+      LLAMA_FACTORY_HOME: ${LLAMA_FACTORY_HOME:-/app/LLaMA-Factory}
+      YG_FT_DATA_ROOT: ${YG_FT_DATA_ROOT:-/data/yg-ft}
+      YG_FT_MODEL_ROOT: ${YG_FT_MODEL_ROOT:-/data/yg-ft/models}
+      YG_FT_DATASET_ROOT: ${YG_FT_DATASET_ROOT:-/data/yg-ft/datasets}
+      YG_FT_OUTPUT_ROOT: ${YG_FT_OUTPUT_ROOT:-/data/yg-ft/outputs}
+      TRAINING_LOG_ROOT: ${TRAINING_LOG_ROOT:-/opt/yg-ft/logs/training}
+      COMPUTE_GPU_COUNT: ${COMPUTE_GPU_COUNT:-0}
+      COMPUTE_GPU_NAME: ${COMPUTE_GPU_NAME:-NVIDIA A800-SXM4-80GB}
+      COMPUTE_GPU_MEMORY_GB: ${COMPUTE_GPU_MEMORY_GB:-80}
+      COMPUTE_GPU_POWER_LIMIT_W: ${COMPUTE_GPU_POWER_LIMIT_W:-300}
+      MIN_TRAINING_GPU_MEMORY_GB: ${MIN_TRAINING_GPU_MEMORY_GB:-4}
+      LOG_DIR: ${LOG_DIR:-/opt/yg-ft/logs/compute}
+      CUDA_VISIBLE_DEVICES: ${CUDA_VISIBLE_DEVICES:-all}
+      NVIDIA_VISIBLE_DEVICES: ${NVIDIA_VISIBLE_DEVICES:-all}
+      NVIDIA_DRIVER_CAPABILITIES: ${NVIDIA_DRIVER_CAPABILITIES:-compute,utility}
+      PYTHONPATH: /app
+    volumes:
+      - ../../compute:/app/compute:ro
+      - ${YG_FT_DATA_ROOT_HOST:-./data/yg-ft}:${YG_FT_DATA_ROOT:-/data/yg-ft}
+      - ${YG_FT_MODEL_ROOT_HOST:-./data/yg-ft/models}:${YG_FT_MODEL_ROOT:-/data/yg-ft/models}
+      - ${YG_FT_DATASET_ROOT_HOST:-./data/yg-ft/datasets}:${YG_FT_DATASET_ROOT:-/data/yg-ft/datasets}
+      - ${YG_FT_OUTPUT_ROOT_HOST:-./data/yg-ft/outputs}:${YG_FT_OUTPUT_ROOT:-/data/yg-ft/outputs}
+      - ${COMPUTE_LOG_ROOT_HOST:-./data/yg-ft/logs/compute}:${LOG_DIR:-/opt/yg-ft/logs/compute}
+      - ${TRAINING_LOG_ROOT_HOST:-./data/yg-ft/logs/training}:${TRAINING_LOG_ROOT:-/opt/yg-ft/logs/training}
+    networks:
+      - yg-ft-compute
+    healthcheck:
+      test: ["CMD-SHELL", "python -c \"import urllib.request; urllib.request.urlopen('http://127.0.0.1:9100/modelTF/health', timeout=3).read()\""]
+      interval: 30s
+      timeout: 5s
+      retries: 3
+      start_period: 20s
+    restart: unless-stopped
+
+networks:
+  yg-ft-compute:
+    name: yg-ft-compute

docker/nginx.conf.template

@@ -0,0 +1,41 @@
+server {
+  listen 80;
+  server_name _;
+
+  root /usr/share/nginx/html;
+  index index.html;
+
+  client_max_body_size 200m;
+
+  location ^~ /modelTF/ {
+    proxy_pass ${BACKEND_PROXY_PASS};
+    proxy_http_version 1.1;
+    proxy_set_header Host $host;
+    proxy_set_header X-Real-IP $remote_addr;
+    proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
+    proxy_set_header X-Forwarded-Proto $scheme;
+    proxy_read_timeout 300s;
+    proxy_send_timeout 300s;
+  }
+
+  location = /modelTF {
+    proxy_pass ${BACKEND_PROXY_PASS};
+    proxy_http_version 1.1;
+    proxy_set_header Host $host;
+    proxy_set_header X-Real-IP $remote_addr;
+    proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
+    proxy_set_header X-Forwarded-Proto $scheme;
+    proxy_read_timeout 300s;
+    proxy_send_timeout 300s;
+  }
+
+  location ~* \.(?:js|css|png|jpg|jpeg|gif|ico|svg|woff|woff2|ttf)$ {
+    try_files $uri =404;
+    expires 30d;
+    add_header Cache-Control "public, immutable";
+  }
+
+  location / {
+    try_files $uri $uri/ /index.html;
+  }
+}

docs/2026-07-23-development-summary.md

@@ -0,0 +1,153 @@
+# 2026-07-23 开发总结
+
+本文档汇总 2026-07-23 当天围绕模型微调平台完成的系统开发内容。当前开发不再按临时 Demo 口径处理，以下能力均按后续可继续演进到生产系统的代码和数据结构推进。
+
+## 1. 今日完成内容
+
+### 1.1 模型训练最小闭环增强
+
+| 功能点 | 作用 | 对应页面/模块 | 用户如何操作 |
+| --- | --- | --- | --- |
+| 训练任务创建前预检 | 在任务进入运行前校验模型、数据集、算力节点、路径和 LLaMA-Factory 参数，减少任务启动后才失败的情况 | 模型微调列表、创建模型微调、训练日志 | 在“模型微调”页面创建任务并提交，系统自动执行预检；失败时页面提示具体原因 |
+| 训练数据同步到算力节点 | 将应用侧选择的数据集文件同步到目标 Compute 节点本地磁盘，保证 LLaMA-Factory 能读取到真实训练文件 | 创建模型微调、训练日志、算力节点/资源副本 | 用户选择数据集后提交训练任务，系统自动同步数据集到算力节点，无需手工进入容器复制 |
+| 动态生成训练参数 | 根据用户在页面选择的训练数据、基座模型、训练方法、输出目录等动态生成 LLaMA-Factory 训练参数 | 创建模型微调、训练日志 | 用户在创建任务表单中选择模型和数据集，启动训练后可在训练日志中查看实际执行命令 |
+| 训练日志和状态轮询 | 应用侧主动轮询 Compute API 获取训练状态、进度、日志、指标和 checkpoint | 训练日志详情页 | 用户进入训练日志页，可查看任务状态、日志输出、指标和 checkpoint 信息 |
+| 训练失败信息回传 | 训练命令失败后将失败状态和日志内容回传应用侧，便于定位数据格式、模型路径或参数问题 | 模型微调列表、训练日志详情页 | 任务失败后，用户进入训练日志页查看失败日志和错误堆栈 |
+
+### 1.2 B. 模型资产、训练与 LLaMA-Factory 任务能力
+
+| 功能点 | 作用 | 对应页面/模块 | 用户如何操作 |
+| --- | --- | --- | --- |
+| 训练模型产物 artifact 展示 | 展示训练/合并产生的 Adapter、合并模型、量化模型等产物路径、大小、checksum | 模型管理 -> 训练模型列表 | 用户进入“模型管理”，切换到“训练模型”，展开某个模型行查看“模型产物” |
+| 模型血缘 lineage 展示 | 记录和展示基座模型、训练模型、合并产物之间的来源关系 | 模型管理 -> 训练模型列表 | 用户展开训练模型行，在“模型血缘”区域查看父资源、子资源和对应 Compute Job |
+| 模型导出任务 export job 状态展示 | 展示模型合并/导出的任务状态、输出目录和创建时间 | 模型管理 -> 训练模型列表 | 用户展开训练模型行，在“导出任务”区域查看导出任务状态 |
+| export 完成后回填 checksum | Compute export 完成后扫描产物文件，回填大小和 `checksum_sha256`，为后续一致性校验和制品治理做准备 | 后端模型资产模块、模型管理页面 | 用户无需手工操作，任务完成后页面自动展示产物大小和 checksum |
+| 合并模型任务接入 Compute | 模型合并不再只是生成模拟任务，而是通过 Compute 节点调用模型合并任务并记录导出任务 | 模型管理 -> 合并权重 | 用户在训练模型列表点击“合并权重”，提交后系统创建 Compute 合并任务 |
+
+### 1.3 D. 算力平台、部署与运维能力
+
+| 功能点 | 作用 | 对应页面/模块 | 用户如何操作 |
+| --- | --- | --- | --- |
+| 算力节点动态配置 | 支持维护 Compute API、File Gateway、权重、标签、启用状态、调度状态等信息 | 算力节点 -> 节点 | 用户进入“算力节点”，点击“新增节点”或“编辑”，填写节点地址和调度参数 |
+| 节点连通性测试 | 验证应用服务器是否能访问 Compute API，并返回 GPU 发现结果和延迟 | 算力节点 -> 节点 | 用户在节点列表点击“测试”，查看连接成功或失败提示 |
+| GPU 状态展示 | 展示每个算力节点的 GPU 利用率、显存、温度、功耗、进程信息 | 算力节点 -> GPU | 用户进入“算力节点”，切换到“GPU”页签查看 |
+| 训练队列展示 | 展示 Compute 侧任务队列、状态、进度、节点和 GPU 分配 | 算力节点 -> 队列 | 用户切换到“队列”页签查看当前运行或等待任务 |
+| 资源副本列表 | 展示数据集、模型、训练产物在算力节点本地磁盘上的副本路径和同步状态 | 算力节点 -> 资源副本 | 用户切换到“资源副本”页签，选择目标节点查看本地副本 |
+| 资源副本漂移检测 | 检查副本路径是否仍存在、大小是否可读取，并将异常副本标记为漂移 | 算力节点 -> 资源副本 | 用户点击“漂移检测”，系统调用 Compute API 检查节点本地路径 |
+| 资源副本 repair 重同步 | 对漂移、失败、待修复副本执行真实重同步，而不只是标记状态 | 算力节点 -> 资源副本 | 用户点击“修复副本”，系统从权威源重新上传或导入到目标算力节点 |
+| 应用侧轮询模式 | 应用服务主动轮询 Compute API，避免需要 Compute 侧反向访问应用侧 | 后端 Compute Gateway、部署架构 | 用户无感知，部署时只需保证应用侧能访问各 Compute 节点 |
+| 本地磁盘挂载约定 | 基座模型、训练数据、训练产物、训练日志均通过宿主机目录挂载到 Compute 容器 | docker/compute 部署 | 运维人员在启动 Compute 服务前准备并挂载 `docker/compute/data/yg-ft/*` 目录 |
+
+### 1.4 前端状态中文化
+
+| 功能点 | 作用 | 对应页面/模块 | 用户如何操作 |
+| --- | --- | --- | --- |
+| 统一状态字典 | 将 `pending`、`running`、`completed`、`failed`、`online`、`synced`、`drifted` 等状态统一展示为中文 | 通用前端组件 `ModelStatusTag`、状态工具 `status.ts` | 用户在各列表页看到中文状态，不再直接看到英文状态值 |
+| 模型管理状态中文化 | 合并状态、导出任务状态、产物状态使用中文展示 | 模型管理 | 用户查看训练模型列表和展开详情时看到“未合并/合并中/已合并/已完成/失败”等中文 |
+| 算力节点状态中文化 | 节点状态、GPU 状态、队列状态、副本同步状态使用中文展示 | 算力节点 | 用户查看“节点/GPU/队列/资源副本”时看到中文状态标签 |
+| 推理/对比/评测/用户状态中文化 | 将推理任务、对比模型加载、评测任务、用户状态统一为中文标签 | 模型推理、模型对比、模型评测、用户设置 | 用户查看相关页面时看到“启动中/已就绪/已完成/启用”等中文状态 |
+
+### 1.5 前端构建产物更新
+
+| 功能点 | 作用 | 对应页面/模块 | 用户如何操作 |
+| --- | --- | --- | --- |
+| 刷新 `frontend/dist` | 保证 Docker 前端 nginx 容器可以直接加载最新页面代码 | 前端部署 | 用户重新访问前端服务即可看到最新页面 |
+| 重启前后端服务验证 | 验证源码挂载和 dist 挂载方式下服务可正常加载最新代码 | docker/app、docker/compute | 开发人员重启 `backend-api`、`frontend`、`compute-api` 后验证页面和接口 |
+
+## 2. 今日涉及的主要代码位置
+
+| 文件 | 说明 |
+| --- | --- |
+| `backend/app/api/v1/endpoints/platform.py` | 新增/完善训练预检、资源同步、模型 artifact/lineage/export job 接口、资源副本漂移检测和 repair |
+| `backend/app/db/platform_store.py` | 新增模型产物、血缘、导出任务、副本同步结果、artifact 查询等数据访问能力 |
+| `compute/agent/process_manager.py` | export/artifact 扫描时补充文件大小和 checksum |
+| `frontend/src/api/modules/model.ts` | 增加训练模型 artifact、lineage、export job API |
+| `frontend/src/api/modules/compute.ts` | 增加副本漂移检测、repair API 和副本字段 |
+| `frontend/src/views/model/ModelManageView.vue` | 增加训练模型展开详情：产物、血缘、导出任务 |
+| `frontend/src/views/compute/ComputeNodesView.vue` | 增加资源副本页签、漂移检测、repair 操作和状态中文化 |
+| `frontend/src/utils/status.ts` | 新增统一状态中文映射和标签类型映射 |
+| `frontend/src/components/ModelStatusTag.vue` | 改为复用统一状态字典 |
+| `frontend/src/components/DataTablePage.vue` | 增加表格展开事件支持 |
+| `frontend/dist/*` | 前端生产构建产物已更新 |
+
+## 3. 今日验证结果
+
+| 验证项 | 结果 |
+| --- | --- |
+| Python 编译检查 | 通过：`python -m compileall backend compute scripts` |
+| 前端生产构建 | 通过：`npm run build` |
+| 前端入口 | 通过：`http://127.0.0.1:16801/` 返回 200 |
+| 后端健康检查 | 通过：`/modelTF/health` 返回正常 |
+| Compute 健康检查 | 通过：`/modelTF/health` 返回正常 |
+| 模型导出任务接口 | 通过：`/modelTF/model-manage/export-jobs` 返回正常 |
+| 算力节点列表接口 | 通过：`/modelTF/compute/nodes` 返回正常 |
+| 资源副本漂移检测 | 通过：当前节点副本检测返回 `drifted: 0` |
+
+## 4. 当前仍需注意的问题
+
+| 问题 | 影响 | 建议 |
+| --- | --- | --- |
+| 训练数据格式仍依赖 LLaMA-Factory 约定 | 如果用户上传的数据字段不符合模板要求，训练仍会失败 | 下一步增加数据集格式校验和模板转换预检 |
+| 单机 MX350 显存较小 | 真实训练大模型时容易因显存不足失败 | 当前环境用于链路验证；真实训练应使用高显存 GPU 节点 |
+| resource replica repair 对大型模型仍是同步调用 | 大模型重同步可能耗时较长 | 下一步将 repair 完整异步化，并展示 sync job 进度 |
+| artifact checksum 目前在 Compute 扫描阶段计算 | 对超大目录递归扫描可能较慢 | 下一步支持分文件 checksum、manifest 文件和后台扫描 |
+| 模型评测、模型推理仍未形成完整生产闭环 | 目前页面已有基础能力，但后端表结构、任务运行、日志、治理能力还需补齐 | 下一步将评测和推理纳入正式开发计划 |
+
+## 5. 下一步开发计划
+
+### 5.1 B. 模型资产、训练与 LLaMA-Factory 任务
+
+| 优先级 | 开发任务 | 目标页面/模块 | 交付结果 |
+| --- | --- | --- | --- |
+| P0 | 数据集格式预检 | 创建模型微调、数据集管理 | 提交训练前校验 Alpaca/ShareGPT/OpenAI Messages 等格式，提示缺失字段 |
+| P0 | 训练参数可视化确认 | 创建模型微调 | 提交前展示最终 LLaMA-Factory 参数预览，减少参数不一致问题 |
+| P0 | 训练任务失败诊断 | 训练日志详情 | 识别常见错误：数据字段缺失、模型路径不存在、显存不足、依赖缺失，并生成中文诊断 |
+| P1 | checkpoint 管理 | 训练日志详情、模型管理 | 展示 checkpoint 列表、大小、路径、保留策略，支持标记最佳 checkpoint |
+| P1 | 模型产物 manifest | 模型管理 | 为每个训练/导出产物生成 manifest，记录文件清单、大小、checksum、来源任务 |
+| P1 | 合并/导出任务详情页 | 模型管理、训练日志 | 展示合并任务日志、状态、产物、失败原因 |
+| P2 | 模型版本治理 | 模型管理 | 支持版本号、标签、发布状态、归档状态、审批状态 |
+| P2 | 训练模板管理 | 系统设置或训练配置 | 将 LLaMA-Factory 模板、数据格式、默认超参做成可维护配置 |
+
+### 5.2 D. 算力平台、部署与运维
+
+| 优先级 | 开发任务 | 目标页面/模块 | 交付结果 |
+| --- | --- | --- | --- |
+| P0 | repair 异步化 | 算力节点 -> 资源副本 | repair 创建 sync job 后后台执行，页面展示进度和失败原因 |
+| P0 | 多算力节点调度策略 | 算力节点、创建模型微调 | 支持按标签、权重、空闲 GPU、显存要求选择节点 |
+| P1 | 节点资源水位告警 | 算力节点、硬件监控 | 展示磁盘、GPU、显存、训练日志目录水位和告警状态 |
+| P1 | 节点维护窗口 | 算力节点 | 支持维护中节点不再调度新任务，已有任务可继续或迁移 |
+| P1 | 文件副本治理 | 算力节点 -> 资源副本 | 支持副本清理、重建、过期策略和跨节点一致性检查 |
+| P2 | 部署健康巡检脚本 | 部署运维 | 一键检查 app、backend、redis、pg、compute、GPU、挂载目录、端口连通 |
+| P2 | Compute Agent 插件标准 | 算力平台 | 抽象 LLaMA-Factory 接入规范，预留其他训练框架 |
+
+### 5.3 模型评测页面开发计划
+
+| 优先级 | 开发任务 | 目标页面/模块 | 交付结果 |
+| --- | --- | --- | --- |
+| P0 | 评测任务表结构和接口补齐 | 模型评测列表、创建评测、评测详情 | 建立 `eval_tasks`、`eval_dimensions`、`eval_sample_results` 等运行表和接口 |
+| P0 | 创建评测任务真实提交 | 创建评测 | 支持选择模型、数据集、评测维度、GPU/节点，提交后生成评测任务 |
+| P0 | 评测任务运行闭环 | 评测详情 | 支持状态、进度、日志、样本级结果回传 |
+| P1 | 评测维度管理 | 评测维度创建/编辑 | 支持规则、Prompt、评分器、权重、适用数据集配置 |
+| P1 | 样本级评分展示 | 评测详情 | 展示每条样本的输入、模型输出、评分、原因、人工复核状态 |
+| P1 | 综合报告生成 | 评测详情、排行榜 | 生成维度汇总、综合分、问题样本、改进建议 |
+| P2 | 评测审批和审计 | 审批流、审计日志 | 评测任务创建、发布报告、删除报告纳入治理 |
+
+### 5.4 模型推理页面开发计划
+
+| 优先级 | 开发任务 | 目标页面/模块 | 交付结果 |
+| --- | --- | --- | --- |
+| P0 | 推理任务表结构和接口补齐 | 模型推理列表、新建推理 | 建立 `inference_tasks`、`inference_task_models`、`chat_sessions`、`chat_messages` |
+| P0 | 模型加载/卸载真实闭环 | 模型推理列表 | 支持选择训练产物加载推理服务，展示加载状态、端口、进程和错误 |
+| P0 | 单模型对话持久化 | 模型对话 | 保存会话、消息、参数、响应耗时、token 统计 |
+| P1 | 多模型对比任务 | 模型对比 | 支持多模型同时加载、同一问题并发请求、结果对比展示 |
+| P1 | 推理资源管控 | 模型推理、算力节点 | 支持 GPU 选择、并发限制、空闲自动卸载、异常进程清理 |
+| P1 | 推理日志和调用审计 | 日志、审计中心 | 记录加载、卸载、对话请求、失败原因、用户和租户信息 |
+| P2 | 推理服务发布 | 模型管理、模型推理 | 支持将某个训练模型发布为内部推理服务，并配置访问权限 |
+
+## 6. 建议的下一阶段顺序
+
+1. 先完成 B+D 的训练稳定性增强：数据格式预检、训练参数预览、失败诊断、repair 异步化。
+2. 再补齐模型评测的真实任务闭环：任务表、创建任务、运行状态、样本结果。
+3. 然后补齐模型推理闭环：加载/卸载、对话持久化、多模型对比。
+4. 最后统一治理能力：审批、审计、租户隔离、资源配额、保留策略和运维巡检。
+

docs/2026-07-24-work-plan.md

@@ -0,0 +1,281 @@
+# 2026-07-24 工作计划
+
+本文基于 `docs/2026-07-23-development-summary.md`、当前 B+D 开发进度，以及 2026-07-24 已完成的训练预检、失败诊断、资源修复异步化能力整理。后续开发仍按正式系统演进推进，不以临时演示能力作为交付标准。
+
+## 1. 当前完成基线
+
+### 1.1 训练创建与预检
+
+- 对应页面：`模型微调 / 创建训练任务`
+- 已完成能力：
+  - 创建训练前调用训练预检接口。
+  - 展示真实 LLaMA-Factory 命令预览。
+  - 展示预检节点、错误、警告和中文诊断建议。
+  - 后端预检不创建任务、不落库、不占用调度锁。
+  - 后端兼容 `base_model/train_dataset_id` 和 `model_id/dataset_id` 两套字段。
+- 对应接口：
+  - `POST /modelTF/fine-tune/preflight`
+  - `POST /modelTF/fine-tune/command-preview`
+
+### 1.2 训练日志与失败诊断
+
+- 对应页面：`系统日志 / 训练日志`
+- 已完成能力：
+  - 训练失败或停止后可查询诊断建议。
+  - 根据训练日志和失败原因识别模型路径、数据集字段、CUDA/GPU、LLaMA-Factory 命令等常见问题。
+  - 页面以中文展示失败诊断。
+- 对应接口：
+  - `GET /modelTF/fine-tune/{task_id}/diagnostics`
+
+### 1.3 算力节点与资源修复
+
+- 对应页面：`算力平台 / 算力节点`
+- 已完成能力：
+  - 算力节点可配置、可测试连接、可查看 GPU 与健康状态。
+  - 资源副本 repair 改为异步提交。
+  - 页面展示资源同步任务进度，避免长请求阻塞页面。
+- 对应接口：
+  - `POST /modelTF/compute/nodes/{node_id}/replicas/repair`
+  - `GET /modelTF/compute/sync-jobs/{sync_id}`
+
+## 2. 未完成任务清单
+
+### P0：真实训练成功闭环
+
+- 对应页面：
+  - `模型管理 / 新增模型`
+  - `数据集管理 / 上传数据集`
+  - `模型微调 / 创建训练任务`
+  - `系统日志 / 训练日志`
+- 未完成内容：
+  - 基座模型必须支持算力服务器本地路径校验，避免选择 API 模型或应用侧路径后进入训练。
+  - 数据集必须支持上传后格式校验，提前发现 Alpaca、ShareGPT、DPO、CPT 字段不匹配问题。
+  - 训练成功后需要完成模型产物扫描、产物入库、训练任务状态回填。
+  - 训练失败时需要强制拉取最后日志片段，保证失败原因可见。
+- 后端开发：
+  - 增强模型路径校验，明确区分 `本地训练模型`、`API 模型`、`已训练模型`。
+  - 增加数据集格式校验服务，支持字段级错误返回。
+  - 完善训练任务完成后的 artifact 回填逻辑。
+- Compute 开发：
+  - 训练结束后扫描输出目录。
+  - 返回产物列表、文件大小、目录结构、训练日志路径。
+- 验收标准：
+  - 使用算力节点可访问的本地模型路径和合法数据集，可以完成一次真实 LLaMA-Factory 训练。
+  - 训练成功后页面能看到完成状态、输出目录、模型产物。
+  - 训练失败时页面能看到中文诊断和最后错误日志。
+
+### P0：LLaMA-Factory 参数映射完善
+
+- 对应页面：`模型微调 / 创建训练任务`
+- 未完成内容：
+  - SFT、DPO、CPT 参数映射仍需细化。
+  - LoRA、Full、QLoRA、量化导出参数需要按训练方式校验。
+  - 不同模板与数据集格式之间的兼容关系需要预检。
+- 后端开发：
+  - 建立训练参数标准化层。
+  - 建立训练方式到 LLaMA-Factory 参数的映射表。
+  - 对无效组合返回中文错误，例如 DPO 缺少 rejected 字段、CPT 不应使用 instruction/output 格式等。
+- 验收标准：
+  - 页面选择不同训练方式时，预检能返回准确命令。
+  - 无效参数组合不能启动训练。
+
+### P1：资源副本 repair 自动重同步
+
+- 对应页面：`算力平台 / 算力节点`
+- 未完成内容：
+  - repair 当前已异步化，但还需要基于权威源路径自动重同步。
+  - 修复完成后需要重新校验副本状态。
+- 后端开发：
+  - 为模型、数据集、训练产物定义权威源路径。
+  - repair job 根据权威源自动发起重传或重新扫描。
+  - 修复完成后更新 replica 状态、checksum、错误原因。
+- Compute 开发：
+  - 支持接收重同步请求。
+  - 支持按资源类型写入目标路径并返回校验信息。
+- 验收标准：
+  - 将副本标记为异常后，点击修复可自动完成重同步并恢复为正常。
+
+### P1：artifact checksum 与 manifest
+
+- 对应页面：
+  - `模型管理 / 已训练模型`
+  - `模型管理 / 模型详情`
+  - `算力平台 / 资源副本`
+- 未完成内容：
+  - artifact checksum 目前仍是预留字段。
+  - 大目录需要 manifest 文件，避免每次递归扫描成本过高。
+- 后端开发：
+  - 增加 artifact checksum 回填逻辑。
+  - 增加 manifest 解析和存储字段。
+- Compute 开发：
+  - export 或训练完成后扫描文件并生成 checksum。
+  - 对大模型目录生成 manifest。
+- 验收标准：
+  - 模型产物列表能展示 checksum、大小、文件数、生成时间。
+  - 副本校验可以基于 checksum 判断一致性。
+
+### P1：模型导出闭环
+
+- 对应页面：
+  - `模型管理 / 已训练模型`
+  - `模型管理 / 导出任务`
+  - `模型管理 / 合并权重`
+- 未完成内容：
+  - 导出任务、量化导出、导出日志、失败重试、产物下载仍需完善。
+- 后端开发：
+  - 完善 export job 创建、查询、取消、重试接口。
+  - 导出完成后登记 artifact 和 lineage。
+- Compute 开发：
+  - 支持 LoRA 合并、GGUF/量化导出、导出日志回传。
+- 验收标准：
+  - 已训练模型可发起导出。
+  - 导出状态、日志、产物可在页面查看。
+
+### P1：多算力节点调度增强
+
+- 对应页面：`算力平台 / 算力节点`
+- 未完成内容：
+  - 当前已有节点配置和基础调度，但生产级调度策略仍需增强。
+  - 需要支持节点标签、权重、启用状态、容量、手动指定节点。
+- 后端开发：
+  - 增强调度策略：标签匹配、权重、当前任务数、GPU 占用、显存约束。
+  - 增加任务排队和等待原因。
+  - 增加 GPU 分配释放的异常恢复。
+- 前端开发：
+  - 创建训练时支持可选手动指定节点。
+  - 算力节点页展示容量、排队数、当前任务。
+- 验收标准：
+  - 多节点时可以自动选择合适节点。
+  - 节点不可用时页面能明确展示不可调度原因。
+
+### P2：训练日志实时性优化
+
+- 对应页面：`系统日志 / 训练日志`
+- 未完成内容：
+  - 当前依赖应用侧轮询，日志实时性和失败最后日志仍需增强。
+- 后端开发：
+  - 支持日志 offset/tail 增量读取。
+  - 任务失败时强制同步最后日志片段。
+  - 日志接口返回来源、偏移量、是否截断。
+- 前端开发：
+  - 日志页按 offset 增量刷新。
+  - 失败时自动跳到底部并展示最后错误。
+- 验收标准：
+  - 训练过程中日志持续刷新。
+  - 失败后无需手动刷新即可看到最后错误。
+
+### P2：权限、审计和治理落点补齐
+
+- 对应页面：
+  - `用户中心`
+  - `项目管理`
+  - `模型管理`
+  - `数据集管理`
+  - `模型微调`
+  - `算力平台`
+- 未完成内容：
+  - 训练链路中的租户、项目、用户权限校验还需要细粒度补齐。
+  - 审计事件需要覆盖训练创建、启动、停止、删除、导出、资源修复。
+- 后端开发：
+  - 接口增加项目/租户上下文校验。
+  - 增加审计事件写入。
+  - 删除和高风险操作进入审批流。
+- 验收标准：
+  - 用户只能访问授权项目内的模型、数据集和训练任务。
+  - 关键操作可以在审计日志中查询。
+
+### P2：模型评测页面真实闭环
+
+- 对应页面：`模型评测`
+- 未完成内容：
+  - 评测任务创建、运行、日志、指标、结果对比仍需接入真实后端。
+- 后端开发：
+  - 评测任务表、评测指标表、评测日志接口。
+  - 支持指定模型、数据集、评测模板和指标。
+- Compute 开发：
+  - 支持评测任务执行器。
+  - 返回指标结果和日志。
+- 验收标准：
+  - 可创建评测任务并看到运行状态、指标结果和失败原因。
+
+### P2：模型推理页面真实闭环
+
+- 对应页面：
+  - `模型推理 / 推理服务`
+  - `模型推理 / 对话测试`
+  - `模型对比`
+- 未完成内容：
+  - 推理服务启动、停止、健康检查、会话请求、资源释放仍需完善。
+- 后端开发：
+  - 推理服务实例管理接口。
+  - 对话请求代理接口。
+  - 推理日志和资源占用查询。
+- Compute 开发：
+  - 支持启动本地模型推理服务。
+  - 支持停止服务和释放 GPU。
+- 验收标准：
+  - 可从页面启动一个已训练模型的推理服务。
+  - 可进行对话测试并查看服务状态。
+
+## 3. 推荐开发顺序
+
+1. 完成真实训练成功闭环。
+2. 完成数据集格式校验和 LLaMA-Factory 参数映射。
+3. 完成 artifact、checksum、manifest 和模型导出闭环。
+4. 完成资源副本 repair 自动重同步。
+5. 完成多算力节点调度增强。
+6. 完成训练日志实时性优化。
+7. 补齐权限、审批、审计治理落点。
+8. 启动模型评测真实闭环开发。
+9. 启动模型推理真实闭环开发。
+
+## 4. 下一轮优先执行任务
+
+### 任务 1：训练模型路径治理
+
+- 页面：`模型管理 / 新增模型`、`模型微调 / 创建训练任务`
+- 内容：
+  - 新增模型时区分是否可用于训练。
+  - API 模型不能作为 LLaMA-Factory 本地训练基座。
+  - 本地模型路径必须是算力节点可访问路径。
+- 验收：
+  - 选择不可训练模型时，训练创建页预检直接给出中文错误。
+
+### 任务 2：数据集格式校验
+
+- 页面：`数据集管理 / 上传数据集`、`模型微调 / 创建训练任务`
+- 内容：
+  - 上传后扫描样本字段。
+  - 支持 Alpaca、ShareGPT、DPO、CPT 校验。
+  - 返回字段缺失、类型错误、空样本等问题。
+- 验收：
+  - `111.json` 这类数据可以明确判断是否满足当前训练模板。
+
+### 任务 3：训练完成产物入库
+
+- 页面：`模型微调 / 任务列表`、`模型管理 / 已训练模型`
+- 内容：
+  - Compute 训练成功后返回输出目录。
+  - 应用侧轮询后创建 trained model 记录。
+  - 写入 artifact、lineage、export job 初始状态。
+- 验收：
+  - 训练完成后无需手动登记，模型管理中自动出现新模型。
+
+### 任务 4：失败日志最后片段拉取
+
+- 页面：`系统日志 / 训练日志`
+- 内容：
+  - 任务失败时立即拉取最后 N 行日志。
+  - 页面展示最后错误、诊断建议和原始日志。
+- 验收：
+  - 训练失败后页面不再只看到“失败”，可以直接看到失败原因。
+
+## 5. 当前测试注意事项
+
+- 当前环境中已有算力节点可访问，但 GPU 为 2GB 显存，预检会提示显存不足，这是符合预期的生产校验结果。
+- 若要验证真实训练成功，需要提前准备：
+  - 算力节点可访问的本地基座模型目录。
+  - 合法训练数据集文件。
+  - 足够显存的 GPU。
+  - Compute 容器内可用的 LLaMA-Factory 和 `llamafactory-cli`。
+- 当前前端 `dist` 已按要求参与构建更新，后续修改前端页面后需要重新执行 `npm run build`。

docs/backend-logging.md

@@ -0,0 +1,109 @@
+# 后端日志模块说明
+
+本文档对应页面/功能模块：全平台通用能力、系统设置、审计中心、任务详情、训练任务日志、运维监控。
+
+## 设计目标
+
+- 后端服务统一使用 `backend/app/core/logging.py` 初始化日志。
+- 日志文件按日期命名，单个文件超过 20MB 自动滚动。
+- 日志只保留最近 10 天，过期文件自动清理。
+- 业务日志使用 JSON Lines 格式，便于 Filebeat、Vector、Logstash、ELK、OpenSearch 等日志平台采集。
+- `ERROR` 及以上日志独立写入错误日志文件，便于告警与问题定位。
+- 日志字段必须包含代码文件、行号、函数、日志内容、请求 ID、进程和线程信息。
+
+## 文件命名
+
+默认日志目录由 `LOG_DIR` 控制，本地默认是 `./logs`。
+
+```text
+logs/
+  backend-2026-07-16.log      # INFO/ERROR 等全部应用日志，JSON Lines
+  backend-2026-07-16.1.log    # 当天主日志超过 20MB 后滚动产生
+  error-2026-07-16.log        # ERROR/CRITICAL 错误日志，JSON Lines
+  error-2026-07-16.1.log      # 当天错误日志超过 20MB 后滚动产生
+```
+
+## 环境变量
+
+```env
+LOG_LEVEL=INFO
+LOG_DIR=./logs
+LOG_FILE_PREFIX=backend
+LOG_ERROR_FILE_PREFIX=error
+LOG_MAX_BYTES=20971520
+LOG_RETENTION_DAYS=10
+```
+
+## JSON 字段
+
+每一行都是一个完整 JSON 对象。
+
+```json
+{
+  "@timestamp": "2026-07-16T13:20:10.123",
+  "level": "INFO",
+  "logger": "app.access",
+  "message": "request completed method=GET path=/modelTF/health status_code=200 duration_ms=3.12 client=127.0.0.1",
+  "module": "logging",
+  "function": "request_logging_middleware",
+  "file": "D:\\AI\\codex-code\\YG_FT\\backend\\app\\core\\logging.py",
+  "line": 169,
+  "process": 1234,
+  "thread": 5678,
+  "thread_name": "MainThread",
+  "request_id": "6f9d1c3c-8be0-4c8d-a5b2-18f9d41f9a0c"
+}
+```
+
+异常日志会额外包含：
+
+```json
+{
+  "exception": "Traceback ..."
+}
+```
+
+## 使用方式
+
+业务代码中不要直接 `print`，统一使用：
+
+```python
+from app.core.logging import get_logger
+
+logger = get_logger(__name__)
+
+logger.info("dataset uploaded dataset_id=%s", dataset_id)
+logger.warning("gpu queue is busy project_id=%s", project_id)
+logger.exception("training job failed job_id=%s", job_id)
+```
+
+`logger.exception(...)` 只能在 `except` 代码块中使用，它会自动写入堆栈信息，并同时进入主日志和错误日志。
+
+## FastAPI 接入
+
+应用入口 `backend/app/main.py` 已完成接入：
+
+```python
+settings = get_settings()
+configure_logging(settings)
+setup_request_logging(app)
+```
+
+请求日志会自动生成或透传 `X-Request-ID`，并在响应头中返回同一个请求 ID，方便前端、后端、算力服务、日志平台串联排障。
+
+## ELK/日志平台采集建议
+
+- 采集路径：`/app/logs/*.log` 或生产环境挂载后的日志目录。
+- 解析方式：按行读取，每行作为 JSON 文档解析。
+- 索引建议：
+  - 主日志：`yg-ft-backend-*`
+  - 错误日志：`yg-ft-backend-error-*`
+- 推荐保留字段：`@timestamp`、`level`、`logger`、`message`、`file`、`line`、`function`、`request_id`、`tenant_id`、`project_id`、`job_id`。
+- 业务开发后续应在关键模块日志中补充 `tenant_id`、`project_id`、`job_id` 等上下文字段，便于企业审计和问题定位。
+
+## 注意事项
+
+- 当前日志落本地磁盘，生产环境建议把日志目录挂载到独立数据盘。
+- 日志文件保留 10 天是应用侧兜底策略，企业侧长期留存应由 ELK、对象存储或归档服务承担。
+- 敏感字段如 token、密码、密钥、原始用户数据内容不得写入日志。
+- 算力节点和应用节点分开部署时，建议两侧都采用 JSON Lines 格式，并使用统一 `request_id/job_id` 贯穿链路。

docs/data-process-design.md

@@ -0,0 +1,279 @@
+# 数据处理接口与算法设计
+
+本文是 `team-development-plan.md` 板块 C 的落地契约，约束
+`/modelTF/data-process/*`、前端数据处理向导以及 PostgreSQL 数据模型。
+
+## 1. 处理闭环
+
+```text
+创建草稿任务
+  → 上传并登记源文件（格式、SHA-256、版本）
+  → 预处理（标准化、无效过滤、去重、可选脱敏）
+  → 构建可编辑预览（来源偏移与行号）
+  → 生成标准训练记录
+  → 质量评分与稳定数据集划分
+  → 人工编辑/恢复
+  → 幂等发布为数据集（保留完整来源链路）
+```
+
+任务只使用以下五种状态：
+
+```text
+pending ──start/generate──> running ──success──> completed
+   ▲                         │  ├──error───────> failed
+   │                         │  └──stop────────> stopped
+   └────────retry────────────┴────────retry─────┘
+```
+
+- `pending` 允许修改配置、增删源文件和重建预览。
+- `running` 拒绝重复启动、修改配置和删除任务。
+- `failed`、`stopped` 可重试；重试前清理上一次未完成结果。
+- `completed` 可编辑结果和发布；重复发布返回同一个数据集。
+- 非法状态转换返回 HTTP 409。
+- 每次生成分配独立 `generation_run_id`；停止或重试会使旧代次立即失效，
+  旧后台任务不能覆盖新代次的结果或状态。
+
+## 2. 接口契约
+
+所有路径由请求层统一添加 `/modelTF`，响应统一为
+`{ "code": 0, "message": "ok", "data": ... }`。
+
+### 任务与进度
+
+| 方法 | 路径 | 说明 |
+| --- | --- | --- |
+| GET | `/data-process` | 分页查询任务，支持 keyword/status/process_type |
+| POST | `/data-process` | 创建 `pending` 草稿 |
+| GET | `/data-process/{id}` | 查询任务详情，不内嵌全部结果 |
+| PUT | `/data-process/{id}` | 更新草稿配置 |
+| DELETE | `/data-process/{id}` | 软删除非运行任务 |
+| POST | `/data-process/{id}/start` | 重建预览并生成的一键编排入口 |
+| POST | `/data-process/{id}/generate` | 使用已确认预览生成结果 |
+| POST | `/data-process/{id}/stop` | 请求停止运行任务 |
+| GET | `/data-process/{id}/progress` | 查询阶段、进度与计数 |
+
+### 源文件与预览
+
+| 方法 | 路径 | 说明 |
+| --- | --- | --- |
+| POST | `/data-process/{id}/source-files` | multipart 上传，字段名 `files` |
+| DELETE | `/data-process/{id}/source-files/{file_id}` | 删除源文件及其预览 |
+| GET | `/data-process/{id}/source-files/{file_id}/content` | 按行窗口读取源文 |
+| POST | `/data-process/{id}/preview/build` | 后端预处理并重建预览 |
+| GET | `/data-process/{id}/preview` | 分页查询预览 |
+| POST | `/data-process/{id}/preview` | 手工增加预览条目 |
+| PUT | `/data-process/{id}/preview/{preview_id}` | 保存人工编辑 |
+| DELETE | `/data-process/{id}/preview/{preview_id}` | 删除预览条目 |
+
+上传批次先全部完成有界读取和解析，再在单个事务中登记；任一文件为空、超限、
+重复或格式非法时整批不落库，暂存原件也会一并清理。响应不回传整个文件，只返回
+逻辑对象引用、文件 ID、格式、原始字节数、记录数和原始 SHA-256。二进制文档必须
+由对应解析器显式处理；不支持的格式返回 415，绝不能静默替换成示例正文。
+
+原始上传字节与解析正文采用双层存储：原件默认保存在
+`backend/storage/data-process/<task_id>/<file_id>/v<version>/<安全文件名>`，数据库的
+`storage_object_id` 只保存 `local://data-process/...` 逻辑引用，不保存或返回宿主机
+绝对路径；完整解析正文继续保存在 `data_process_source_files.content`，列表摘要使用
+`content_preview`，因此 PDF、Office 等文件的预览无需反复解析原始二进制。可通过
+`DATA_PROCESS_STORAGE_DIR` 指定其他本地根目录；从 `start.sh` 启动时，该变量应在
+当前终端导出。历史 `db://data-process/...` 记录继续从数据库正文预览。
+
+单独删除源文件时先提交数据库软删除，再立即删除受控目录中的原件；若物理删除
+失败，接口仍按数据库结果返回成功并标记 `storage_cleanup_pending=true`，软删除记录
+中的逻辑引用可供运维补偿清理。任务软删除以及修改 `process_type` 导致的源文件
+软删除按留存数据处理，当前版本不自动物理清除。
+
+### 结果与发布
+
+| 方法 | 路径 | 说明 |
+| --- | --- | --- |
+| GET | `/data-process/{id}/results` | 分页查询，支持 keyword/status/split |
+| PUT | `/data-process/{id}/results/{result_id}` | 保存人工编辑并重评分 |
+| POST | `/data-process/{id}/results/{result_id}/restore` | 恢复生成时的原值 |
+| POST | `/data-process/{id}/publish` | 幂等发布为数据集 |
+
+## 3. 配置校验
+
+- `process_type`：`structured | unstructured | external`。
+- 数据集划分的 `train + validation + test` 必须等于 100，各项为 0～100。
+- `chunk_size` 为 16～32768 token；`chunk_overlap` 必须小于
+  `chunk_size`；`min_chunk_size` 不得大于 `chunk_size`。
+- `temperature` 为 0～2，`max_tokens` 为 1～32768。
+- 任务名称在未删除任务中唯一。
+- 选择 `generation_model_id` 后，启动生成时校验模型是否存在，并保存不含密钥的
+  模型版本快照。
+- 当前运行库沿用平台现有的单租户模式，不接受客户端提交 tenant/owner/operator
+  字段，避免伪造隔离上下文；接入平台可信认证上下文后再启用数据库中预留的
+  tenant/project 字段。
+
+## 4. 格式解析与标准化
+
+上传格式按处理类型约束：
+
+- 结构化数据支持 JSON、JSONL/NDJSON、CSV/TSV 和 XLSX。XLSX 能识别纵向、
+  横向合并单元格组成的多级表头，并稳定展平为 `销售.Q1` 一类字段；公式只读取
+  文件中已缓存的计算结果，不在服务端执行。
+- 非结构化数据支持 UTF-8/UTF-8 BOM 的 TXT、Markdown、JSON/JSONL，以及
+  文本型 PDF、DOCX 和 PPTX。PDF 按页抽取文本，DOCX 抽取段落与表格，PPTX
+  抽取幻灯片文本与表格，随后统一进入切片算法。
+- 旧版二进制 DOC、XLS、PPT 不直接解析，返回 415 并提示分别转换为
+  DOCX、XLSX、PPTX。
+- 扫描 PDF 没有文本层时明确提示需要 OCR；当前流程不执行 OCR。加密、损坏或
+  超出页数/工作表/行列/解压规模限制的文件整批拒绝。
+
+现代 Office 文件在交给解析库前检查 ZIP 成员路径、重复成员、加密标记、活动
+XML、单成员大小、总解压大小和压缩比，避免路径穿越、实体扩展与 ZIP bomb。
+
+结构化选项按固定顺序执行，关闭某项时不会隐式执行对应业务变换：
+
+1. `detect_structure`：展平嵌套对象；XLSX 上传解析阶段识别合并单元格和多级表头。
+2. `normalize_format`：字段名转 snake_case，执行 Unicode NFKC、换行和容器值规范化，
+   输出键顺序稳定的 canonical JSON；账号、邮编等字符串不会转成数值。
+3. `clean_invalid`：删除全空列和全空记录；存在 `id/uuid/key/code/*_id` 身份字段时，
+   删除身份字段残缺的行，但不会因备注等可选字段为空误删有效记录。
+4. `filter_anomaly`：仅对不少于 8 个样本的非身份数值字段使用 Tukey IQR 过滤离群行，
+   同时过滤明确乱码、不可打印或极端超长文本；小样本和 ID 字段不参与统计过滤。
+5. `deduplicate`：先按整行 canonical JSON 精确去重，再按非空
+   `id/uuid/key/code/*_id` 字段稳定保留首条；空关键值互不视为重复。
+6. `desensitize`：对结构化姓名字段和正文中的高置信上下文姓名、邮箱、手机号、
+   身份证号进行不可逆掩码，并分别记录命中数。
+
+非结构化“智能预处理”由六个可独立执行的底层选项组成：
+
+- `clean_invalid_content` 删除确定为空、不可读或纯重复符号的无效块。
+- `detect_document_structure` 识别 Markdown、中文章节和数字标题，切片不跨章节，
+  并在预览质量详情中保存 `heading_path`。
+- `merge_short_content` 在同一章节中合并短块，合并后不突破 `chunk_size`。
+- `filter_low_quality` 在生成前过滤乱码、不可打印、重复或极端超长内容。
+- `deduplicate_content` 先精确去重，再对足够长的内容进行保守近重复判断；数字或
+  否定含义变化时始终保留。
+- `preserve_context` 才启用相邻切片 overlap；关闭时切片不共享正文上下文，且上下文
+  永不跨文件或章节。
+
+表格、围栏代码块和连续列表保护是三个独立参数。启用时切点避开相应 Markdown
+块，关闭时允许按正常长度切分。
+
+脱敏是不可逆掩码：
+
+- 邮箱：`[EMAIL]`
+- 中国大陆手机号：`[PHONE]`
+- 18 位身份证号：`[ID_CARD]`
+- 高置信姓名：`[NAME]`
+
+源文件原文与脱敏后的预览分开保存，结果不得反向覆盖源文件。
+
+## 5. 切片算法
+
+首阶段只提供三种切片策略：
+
+- `structure` 先识别 Markdown、中文章节及编号标题，再由 LlamaIndex
+  `SentenceSplitter` 在章节内按段落和中英文句界限长；章节之间不共享 overlap。
+- `fixed` 使用 LlamaIndex `TokenTextSplitter` 按目标 token 窗口切分。
+- `custom` 使用用户给定分隔符，在找不到合适分隔点时回退到固定窗口。
+
+不提供 `semantic` 和旧 `heading` 配置；创建或更新任务时传入这些值会直接拒绝。
+LlamaIndex 只负责通用切分，原文 offset、行号、标题路径和 Markdown 保护块仍由
+项目适配层统一维护。
+
+首版使用可替换的确定性 token 估算器，中文字符、标点和英文词分别计数；
+所有偏移以 Python/JavaScript 都能稳定表达的 Unicode 文本偏移为准。
+
+算法必须满足：
+
+- 每轮游标严格前进，异常分隔符不能产生死循环。
+- overlap 是最大重叠量，尾部过短切片合并到上一片。
+- 代码块、Markdown 表格和连续列表在启用保护时不从中间切开。
+- 每个预览条目记录 `source_file_id`、字符偏移、起止行、token 数和算法版本。
+
+## 6. 生成与质量评分
+
+结构化记录优先识别以下字段：
+
+1. `instruction/input/output`
+2. `question/context/answer`
+3. `prompt/input/response`
+
+已有标准字段时只做标准化；需要语义生成时调用所选模型的 OpenAI 兼容接口，
+并固化模型 ID、模型版本、prompt、temperature、max_tokens 和 JSON mode 快照。
+模型地址可输入域名、`/v1` 基础地址或完整地址：例如输入
+`www.caoxiaozhu.com` 会规范为
+`https://www.caoxiaozhu.com/v1/chat/completions`，无需用户手工拼接路径。
+单条失败记录为 `invalid`，有限重试耗尽后继续处理下一条，避免整批丢失。
+
+每条结果总分为 0～100：
+
+```text
+总分 = 完整性 35% + 长度合理性 20% + 可读性 20%
+     + 来源相关性 15% + 非重复性 10%
+```
+
+- instruction 或 output 为空时格式硬失败并标记 `invalid`。
+- 开启短文本过滤且 output 低于 `min_output_length` 时标记过滤原因。
+- 评分详情、命中规则与过滤原因必须落库并返回前端，不只返回一个总分。
+
+## 7. 稳定划分
+
+划分不能依赖结果插入顺序。对每条记录计算：
+
+```text
+bucket = SHA256(task_id + ":" + result_id) mod 10000
+```
+
+按万分位阈值映射为 `train/validation/test`。同一任务重试、分页或进程重启后，
+同一结果仍落入相同 split。
+
+## 8. 发布与来源链路
+
+发布在一个数据库事务中完成：
+
+```text
+source_file
+  → data_process_task
+  → data_process_result
+  → dataset
+  → dataset_file + dataset_file_version
+  → dataset_record
+```
+
+只发布 `valid/modified` 且满足质量门槛的结果。输出 JSONL 先计算 checksum，
+再登记文件版本和记录。发布请求中的 split 会重新进行稳定划分。任务的
+`output_dataset_id` 是幂等键；重复调用返回已有数据集，目标数据集若已被外部
+删除则解除断链并重新发布。当前运行库只开放 `local` 存储类型，正文保存在
+当前平台的 `dataset_files.content`，不虚假宣称已上传 MinIO 或云存储。
+
+## 9. 安全边界
+
+- 文件名只保留 basename，响应不返回宿主机绝对路径。
+- 上传限制单文件、批次文件数与批次总大小，解析采用有界读取。
+- 外部数据源凭据不写日志、不进入 localStorage、不在详情接口回显。
+- 外部 PostgreSQL 只允许单条 `SELECT/WITH`、只读事务、5 秒连接超时、
+  30 秒语句超时和 50 MiB 响应上限；默认阻止回环、链路本地及私网地址。
+  可信内网部署必须显式设置 `DATA_PROCESS_ALLOW_PRIVATE_EXTERNAL_DB=true`。
+- SQL 迁移独立存放，应用启动不会隐式修改当前远程数据库。
+
+## 10. 迁移边界
+
+`backend/app/db/sql/002_data_process.sql` 只面向当前运行脚本
+`001_platform_runtime.sql` 的 TEXT/最小表模型。它会在执行前检查
+`datasets.id` 类型；若检测到 `docs/postgres-schema.sql` 的 UUID/JSONB 目标模型，
+会直接失败而不是进行一半成功、一半失败的危险迁移。目标模型后续应由独立
+Alembic 迁移和对应存储实现承接。
+
+`DataProcessStore.ensure_schema()` 仅供受控管理命令显式调用，API 路由和应用启动
+均不会自动执行该迁移。本次开发和测试没有修改任何远程数据库。
+
+在已加载 `DATABASE_URL` 的终端中可先只读检查：
+
+```bash
+cd backend
+.venv/bin/python -m app.modules.data_process.schema_cli --check
+```
+
+确认目标主机和数据库名称无误后，才显式执行：
+
+```bash
+cd backend
+.venv/bin/python -m app.modules.data_process.schema_cli --apply --yes
+```
+
+命令输出只显示主机、端口和数据库名，不显示用户名或密码。