feat: 删除 知识库-终端 关联, 简化 prompt 配置

app/Models/Terminal.php

@@ -46,19 +46,6 @@ class Terminal extends Model
         ];
     }
 
-    /**
-     * 获取终端关联的知识库
-     *
-     * @return \Illuminate\Database\Eloquent\Relations\BelongsToMany
-     */
-    public function knowledgeBases()
-    {
-        return $this->belongsToMany(KnowledgeBase::class, 'terminal_knowledge_bases')
-                    ->withPivot('priority')
-                    ->withTimestamps()
-                    ->orderBy('priority');
-    }
-
     /**
      * 获取终端关联的指引
      *