feat: 初始化 OnceLove GraphRAG 项目基础架构

- 添加完整的项目结构，包括前端（Vue3 + Vite）、后端（Fastify）和基础设施配置
- 实现核心 GraphRAG 服务，集成 Neo4j 图数据库和 Qdrant 向量数据库
- 添加用户认证系统和管理员登录界面
- 提供 Docker 容器化部署方案和开发环境配置
- 包含项目文档、API 文档（Swagger）和测试脚本

OnceLove/oncelove-graphrag/api/src/controllers/graphrag.controller.js

@@ -0,0 +1,32 @@
+/**
+ * 统一服务层异常处理并输出标准响应结构。
+ */
+const sendServiceResult = async (reply, action) => {
+  try {
+    const data = await action();
+    return reply.send(data);
+  } catch (error) {
+    const statusCode = Number(error?.statusCode) || 500;
+    return reply.code(statusCode).send({
+      ok: false,
+      error: error?.message ?? "internal error"
+    });
+  }
+};
+
+/**
+ * GraphRAG 控制器：负责请求转发与响应封装。
+ */
+export const createGraphRagController = (service) => ({
+  health: async (_request, reply) => reply.send({ ok: true }),
+  ready: async (_request, reply) => sendServiceResult(reply, () => service.ready()),
+  bootstrap: async (_request, reply) => sendServiceResult(reply, () => service.bootstrap()),
+  getGraphStats: async (_request, reply) => sendServiceResult(reply, () => service.getGraphStats()),
+  ingest: async (request, reply) => sendServiceResult(reply, () => service.ingest(request.body)),
+  queryTimeline: async (request, reply) =>
+    sendServiceResult(reply, () => service.queryTimeline(request.body)),
+  queryGraphRag: async (request, reply) =>
+    sendServiceResult(reply, () => service.queryGraphRag(request.body)),
+  analyzeAndIngest: async (request, reply) =>
+    sendServiceResult(reply, () => service.analyzeAndIngest(request.body.text))
+});