修改初始化脚本，增加llm_prompt_template表索引

src/main/resources/script/init.sql

@@ -247,7 +247,8 @@ CREATE TABLE IF NOT EXISTS `llm_prompt_template`
     `system`   text                NOT NULL,
     `user`     text                NOT NULL,
     `remark`   varchar(32)         NOT NULL,
-    PRIMARY KEY (`model_id`, `app_type`)
+    PRIMARY KEY (`id`),
+    KEY `model_app_type` (`model_id`, `app_type`)
 ) ENGINE = InnoDB
   DEFAULT CHARSET = utf8mb4;