refactor(chat): 重构聊天服务架构，引入Handler模式

主要变更:
1. 移除ruoyi-ai-copilot模块
2. 重构docker配置目录结构，统一迁移至docs/docker/
3. 聊天服务引入Handler模式:
   - 新增ChatHandler接口及多种实现
   - DefaultChatHandler: 默认聊天处理
   - AgentChatHandler: Agent模式处理
   - WorkflowChatHandler: 工作流处理
   - ResumeChatHandler: 恢复会话处理
   - ChatContextBuilder: 上下文构建器
4. 简化AbstractStreamingChatService和ChatServiceFacade代码
5. 优化各Provider实现，统一代码风格

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

docs/docker/ minio/ docker-compose.yml

@@ -0,0 +1,28 @@
+---
+version: '3.8'
+
+services:
+  minio:
+    image: minio/minio
+    container_name: minio
+    ports:
+      - "9000:9000"
+      - "9090:9090"
+    environment:
+      - MINIO_ACCESS_KEY=ruoyi
+      - MINIO_SECRET_KEY=ruoyi123
+    volumes:
+      - minio_data:/data
+      - minio_config:/root/.minio
+    command: server /data --console-address ":9090"
+    restart: always
+    networks:
+      - minio-net
+
+networks:
+  minio-net:
+    driver: bridge
+
+volumes:
+  minio_data:
+  minio_config:

docs/docker/ neo4j/docker-compose.yml

@@ -0,0 +1,65 @@
+version: '3.8'
+
+services:
+  neo4j:
+    image: neo4j:5.15.0
+    container_name: ruoyi-neo4j
+    restart: unless-stopped
+    ports:
+      # HTTP端口
+      - "7474:7474"
+      # HTTPS端口
+      - "7473:7473"
+      # Bolt端口
+      - "7687:7687"
+    environment:
+      # 初始密码设置（首次启动后需要修改）
+      - NEO4J_AUTH=neo4j/your_password
+      # 接受许可协议
+      - NEO4J_ACCEPT_LICENSE_AGREEMENT=yes
+      # 内存配置（根据服务器配置调整）
+      - NEO4J_dbms_memory_heap_initial__size=512m
+      - NEO4J_dbms_memory_heap_max__size=2g
+      - NEO4J_dbms_memory_pagecache_size=1g
+      # 事务日志配置
+      - NEO4J_dbms_tx__log_rotation_retention__policy=3 days
+      # 允许从任何主机连接
+      - NEO4J_dbms_default__listen__address=0.0.0.0
+      # 启用APOC插件
+      - NEO4J_dbms_security_procedures_unrestricted=apoc.*
+      - NEO4J_dbms_security_procedures_allowlist=apoc.*
+      # 日志级别
+      - NEO4J_dbms_logs_debug_level=INFO
+    volumes:
+      # 数据持久化
+      - neo4j_data:/data
+      # 日志持久化
+      - neo4j_logs:/logs
+      # 导入目录
+      - neo4j_import:/var/lib/neo4j/import
+      # 插件目录
+      - neo4j_plugins:/plugins
+    networks:
+      - ruoyi-network
+    healthcheck:
+      test: [ "CMD-SHELL", "wget --no-verbose --tries=1 --spider localhost:7474 || exit 1" ]
+      interval: 30s
+      timeout: 10s
+      retries: 5
+      start_period: 40s
+
+volumes:
+  neo4j_data:
+    name: ruoyi-neo4j-data
+  neo4j_logs:
+    name: ruoyi-neo4j-logs
+  neo4j_import:
+    name: ruoyi-neo4j-import
+  neo4j_plugins:
+    name: ruoyi-neo4j-plugins
+
+networks:
+  ruoyi-network:
+    name: ruoyi-network
+    driver: bridge
+

docs/docker/milvus/docker-compose.yml

@@ -0,0 +1,75 @@
+version: '3.5'
+ 
+services:
+  etcd:
+    container_name: milvus-etcd
+    image: quay.io/coreos/etcd:v3.5.18
+    environment:
+      - ETCD_AUTO_COMPACTION_MODE=revision
+      - ETCD_AUTO_COMPACTION_RETENTION=1000
+      - ETCD_QUOTA_BACKEND_BYTES=4294967296
+      - ETCD_SNAPSHOT_COUNT=50000
+    volumes:
+      - ${DOCKER_VOLUME_DIRECTORY:-.}/volumes/etcd:/etcd
+    command: etcd -advertise-client-urls=http://etcd:2379 -listen-client-urls http://0.0.0.0:2379 --data-dir /etcd
+    healthcheck:
+      test: ["CMD", "etcdctl", "endpoint", "health"]
+      interval: 30s
+      timeout: 20s
+      retries: 3
+ 
+  minio:
+    container_name: milvus-minio
+    image: minio/minio:RELEASE.2023-03-20T20-16-18Z
+    environment:
+      MINIO_ACCESS_KEY: minioadmin
+      MINIO_SECRET_KEY: minioadmin
+    ports:
+      - "9001:9001"
+      - "9000:9000"
+    volumes:
+      - ${DOCKER_VOLUME_DIRECTORY:-.}/volumes/minio:/minio_data
+    command: minio server /minio_data --console-address ":9001"
+    healthcheck:
+      test: ["CMD", "curl", "-f", "http://localhost:9000/minio/health/live"]
+      interval: 30s
+      timeout: 20s
+      retries: 3
+ 
+  standalone:
+    container_name: milvus-standalone
+    image: milvusdb/milvus:v2.5.7
+    command: ["milvus", "run", "standalone"]
+    security_opt:
+    - seccomp:unconfined
+    environment:
+      ETCD_ENDPOINTS: etcd:2379
+      MINIO_ADDRESS: minio:9000
+    volumes:
+      - ${DOCKER_VOLUME_DIRECTORY:-.}/volumes/milvus:/var/lib/milvus
+    healthcheck:
+      test: ["CMD", "curl", "-f", "http://localhost:9091/healthz"]
+      interval: 30s
+      start_period: 90s
+      timeout: 20s
+      retries: 3
+    ports:
+      - "19530:19530"
+      - "9091:9091"
+    depends_on:
+      - "etcd"
+      - "minio"
+ 
+  attu:
+    container_name: attu
+    image: zilliz/attu:v2.5.7
+    environment:
+      MILVUS_URL: milvus-standalone:19530
+    ports:
+      - "19500:3000"  # 外部端口19500可以自定义
+    depends_on:
+      - "standalone"
+ 
+networks:
+  default:
+    name: milvus

docs/docker/weaviate/docker-compose.yml

@@ -0,0 +1,25 @@
+---
+services:
+  weaviate:
+    command:
+      - --host
+      - 0.0.0.0
+      - --port
+      - '6038'
+      - --scheme
+      - http
+    image: semitechnologies/weaviate:1.19.7
+    ports:
+      - 6038:6038
+      - 50051:50051
+    volumes:
+      - weaviate_data:/var/lib/weaviate
+    environment:
+      QUERY_DEFAULTS_LIMIT: 25
+      AUTHENTICATION_ANONYMOUS_ACCESS_ENABLED: 'true'
+      PERSISTENCE_DATA_PATH: '/var/lib/weaviate'
+      DEFAULT_VECTORIZER_MODULE: 'none'
+      CLUSTER_HOSTNAME: 'node1'
+volumes:
+  weaviate_data:
+...