fix 文档管理模块 & 法规对话模块

.env.example

@@ -7,10 +7,13 @@ APP_VERSION=0.1.0
 DEBUG=false
 
 # ===== Milvus向量数据库配置 =====
-MILVUS_HOST=localhost
+MILVUS_HOST=6.86.80.8
 MILVUS_PORT=19530
 MILVUS_COLLECTION=regulations_dense_1024_v1
 MILVUS_DB_NAME=default
+MILVUS_INDEX_TYPE=IVF_FLAT
+MILVUS_NLIST=128
+MILVUS_NPROBE=16
 
 # ===== 嵌入模型配置 =====
 EMBEDDING_MODEL=text-embedding-v3
@@ -20,20 +23,20 @@ EMBEDDING_BASE_URL=http://6.86.80.4:30080/v1
 EMBEDDING_TIMEOUT_SECONDS=120
 
 # ===== MinIO对象存储配置 =====
-MINIO_ENDPOINT=localhost:9000
+MINIO_ENDPOINT=6.86.80.8:9000
 MINIO_ACCESS_KEY=minioadmin
 MINIO_SECRET_KEY=minioadmin123
 MINIO_BUCKET=compliance-docs
 MINIO_SECURE=false
 
 # ===== Redis配置 =====
-REDIS_HOST=localhost
+REDIS_HOST=6.86.80.8
 REDIS_PORT=6379
 REDIS_PASSWORD=
 REDIS_DB=0
 
 # ===== PostgreSQL配置 =====
-POSTGRES_HOST=localhost
+POSTGRES_HOST=6.86.80.8
 POSTGRES_PORT=5432
 POSTGRES_USER=compliance
 POSTGRES_PASSWORD=compliance123
@@ -46,6 +49,8 @@ MAX_FILE_SIZE_MB=100
 DOCUMENT_METADATA_PATH=backend/data/documents.json
 PARSER_BACKEND=aliyun
 CHUNK_BACKEND=aliyun
+# 文档元数据存储后端：json（默认，无需数据库）或 postgres（启用 PG 持久化）
+DOCUMENT_REPOSITORY_BACKEND=json
 
 # ===== 阿里云文档解析 =====
 ALIBABA_ACCESS_KEY_ID=your_aliyun_access_key_id
@@ -88,9 +93,18 @@ DEEPSEEK_MODEL=deepseek-v4-flash
 
 # ===== RAG配置 =====
 RAG_TOP_K=10
+RAG_RETRIEVAL_TOP_K=20
 RAG_MAX_CONTEXT_TOKENS=4000
 RAG_SUMMARY_MAX_TOKENS=1024
 
+# ===== Reranker配置（Cross-Encoder精排，默认关闭）=====
+# 设置 RERANKER_ENABLED=true 并配置 RERANKER_BASE_URL 以启用精排
+RERANKER_ENABLED=false
+RERANKER_BASE_URL=
+RERANKER_MODEL=BAAI/bge-reranker-v2-m3
+RERANKER_API_KEY=
+RERANKER_TOP_K=5
+
 # ===== 会话配置 =====
 SESSION_MAX_SESSIONS=100
 SESSION_TIMEOUT_MINUTES=30