feat: 删除 知识库-终端 关联, 简化 prompt 配置

app/Models/KnowledgeBase.php

@@ -21,19 +21,6 @@ class KnowledgeBase extends Model
         'status',
     ];
 
-    /**
-     * 获取关联的终端
-     *
-     * @return \Illuminate\Database\Eloquent\Relations\BelongsToMany
-     */
-    public function terminals()
-    {
-        return $this->belongsToMany(Terminal::class, 'terminal_knowledge_bases')
-                    ->withPivot('priority')
-                    ->withTimestamps()
-                    ->orderBy('priority');
-    }
-
     /**
      * 获取知识库下的文档
      *