refactor(chat):重构AI助手功能并集成文档读取能力

- 移除原有的手机号识别与消息发送逻辑
- 删除RabbitMQ和邮件相关配置及代码
- 引入PDF、HTML、JSON等多种文档读取器
- 集成向量存储与检索功能支持问答
- 更新Spring AI依赖并调整内存存储方式
- 添加新的工具类用于保存文档到向量库- 修改提示词模板去除强制附加句规则
- 调整Cassandra和PgVector相关配置项- 新增多种文件格式读取组件实现类

snails-chat/src/main/resources/config/application.yml

@@ -9,18 +9,13 @@ spring:
     name: snails-ai
   banner:
     location: config/banner.txt
+  cassandra:
+    contact-points: 127.0.0.1 # Cassandra 集群节点地址（可配置多个，用逗号分隔）
+    port: 9042 # 端口号
+    local-datacenter: datacenter1 # 必须与集群配置的数据中心名称一致（大小写敏感）
   jackson:
     serialization:
       write-dates-as-timestamps: false
-  mail:
-    host: ${MAIL_HOST:smtp.qq.com}
-    port: ${MAIL_PORT:587}
-    username: ${MAIL_USERNAME:2628273921@qq.com}
-    password: ENC(ARrAyZNZhbaG6tebogv6WSQbtCO+Vq93NfSA6tMAiD0tTogujERVwEGBECakH0LUhYq9oTaXgfw7tonxNAFEwg==)
-    properties:
-      mail.smtp.auth: true
-      mail.smtp.starttls.enable: true
-      mail.smtp.starttls.required: true
   data:
     redis:
       host: localhost
@@ -35,15 +30,6 @@ spring:
           max-wait: 10000
           min-idle: 10
           time-between-eviction-runs: 10000
-  rabbitmq:
-    host: localhost
-    port: 5672
-    username: admin
-    password: admin123
-    virtual-host: /snailsAi
-    listener:
-      simple:
-        prefetch: 1
   datasource:
     driver-class-name: org.postgresql.Driver
     url: jdbc:postgresql://localhost:5432/postgres?serverTimezone=Asia/Shanghai
@@ -56,18 +42,31 @@ spring:
       connection-timeout: 5000    # 获取连接超时 5 秒
       max-lifetime: 28800000      # 8 小时（确保在数据库连接超时前被回收）
   ai:
-    memory:
-      redis:
-        host: localhost
-        port: 6379
-        timeout: 5000
-        password: redis
+    vectorstore:
+      pgvector:
+        initialize-schema: true
+        table-name: snails_ai_vector
+        index-type: hnsw
+        dimensions: 1024
+    chat:
+      memory:
+        repository:
+          cassandra:
+            keyspace: snails_ai
+            table: t_ai_chat_memory # 表名
+            time-to-live: 1095d # 数据的自动过期时间（1095天 ≈ 3年）
+            initialize-schema: true  # 自动初始化表结构
     dashscope:
       api-key: ENC(cMgcKZkFllyE88DIbGwLKot9Vg02co+gsmY8L8o4/o3UjhcmqO4lJzFU35Sx0n+qFG8pDL0wBjoWrT8X6BuRw9vNlQhY1LgRWHaF9S1zzyM=)
       chat:
         options:
           model: qwen-plus
           temperature: 0.5
+      embedding:
+        options:
+          model: text-embedding-v4
+          dimensions: 1024
+      read-timeout: 60000
 mybatis-plus:
   configuration:
     map-underscore-to-camel-case: true