修复编译错误和警告: 添加缺失的导入，移除未使用的导入和变量

src/handler/point.rs

@@ -1,7 +1,8 @@
-锘縰se axum::{Json, extract::{Path, Query, State}, http::HeaderMap, response::IntoResponse};
+use axum::{Json, extract::{Path, Query, State}, http::HeaderMap, response::IntoResponse};
 use serde::{Deserialize, Serialize};
 use uuid::Uuid;
 use validator::Validate;
+use sqlx::Row;
 
 use crate::util::response::ApiErr;
 

src/handler/tag.rs

@@ -1,5 +1,5 @@
 use axum::{Json, extract::{Path, State}, http::StatusCode, response::IntoResponse};
-use serde::{Deserialize, Serialize};
+use serde::Deserialize;
 use uuid::Uuid;
 use validator::Validate;
 

src/main.rs

@@ -17,7 +17,7 @@ use connection::ConnectionManager;
 use event::EventManager;
 use std::sync::Arc;
 use axum::{
-    routing::get,
+    routing::{get, put},
     Router,
 };
 

src/service.rs

@@ -218,12 +218,12 @@ pub async fn update_tag(
         let mut updates = Vec::new();
         let mut param_count = 1;
 
-        if let Some(n) = name {
+        if let Some(_n) = name {
             updates.push(format!("name = ${}", param_count));
             param_count += 1;
         }
 
-        if let Some(d) = description {
+        if let Some(_d) = description {
             updates.push(format!("description = ${}", param_count));
             param_count += 1;
         }