feat: 新增多用户支持、关系历史查询与恋爱决策建议功能

- 新增用户服务，支持多用户数据隔离与认证
- 新增关系历史查询接口，支持按冲突、积极、时间线等类型过滤
- 新增恋爱决策建议接口，基于图谱分析生成关系健康报告
- 优化前端图谱可视化，增加节点详情面板、图例和边标签显示
- 改进文本分析逻辑，支持实体去重和情感标注
- 新增完整流程测试脚本，验证分析、入库、查询全链路

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

@@ -21,12 +21,20 @@ 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()),
+  getGraphStats: async (request, reply) => sendServiceResult(reply, () => service.getGraphStats(request.query.userId || 'default')),
   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))
+    sendServiceResult(reply, () => service.incrementalUpdate(request.body.text, request.body.userId || 'default')),
+  queryHistory: async (request, reply) =>
+    sendServiceResult(reply, () => service.queryRelationshipHistory(
+      request.body.userId || 'default',
+      request.body.queryType || 'all',
+      request.body.limit || 20
+    )),
+  getAdvice: async (request, reply) =>
+    sendServiceResult(reply, () => service.getRelationshipAdvice(request.body.userId || 'default'))
 });