Merge 6bb8cb08ca into d3502e105a

重构 ChatRagOnly 方法，使用新的 ChatRagOnlyRequset 结构作为参数
移除对话管理相关代码，仅保留文档检索和敏感词检查功能
新增 MCPCall 结构用于记录调用信息

backend/domain/mcp.go

@@ -0,0 +1,15 @@
+package domain
+
+import (
+	"time"
+)
+
+type MCPCall struct {
+	ID               string    `gorm:"primaryKey;column:id" json:"id,omitempty"`
+	ClientName       string    `gorm:"column:client_name" json:"client_name"`
+	ClientVersion    string    `gorm:"column:client_version" json:"client_version"`
+	Question         string    `gorm:"column:question" json:"question"`
+	Document         string    `gorm:"column:document" json:"document"`
+	RemoteIP         string    `gorm:"column:remote_ip" json:"remoate_ip"`
+	CreatedAt        time.Time `gorm:"column:created_at;not null;default:now()" json:"created_at"`
+}

backend/store/pg/migration/000033_create_mcp_calls.down.sql

@@ -1 +0,0 @@
-DROP TABLE IF EXISTS mcp_calls;

backend/store/pg/migration/000033_create_mcp_calls.up.sql

@@ -1,11 +0,0 @@
-CREATE TABLE IF NOT EXISTS mcp_calls (
-    id SERIAL PRIMARY KEY,
-    mcp_session_id TEXT NOT NULL,
-    kb_id TEXT NOT NULL,
-    remote_ip TEXT,
-    initialize_req JSONB,
-    initialize_resp JSONB,
-    tool_call_req JSONB,
-    tool_call_resp TEXT,
-    created_at timestamptz NOT NULL DEFAULT NOW()
-);