diff --git a/src-tauri/src/commands/config.rs b/src-tauri/src/commands/config.rs
index 56ec473..1a6b831 100644
--- a/src-tauri/src/commands/config.rs
+++ b/src-tauri/src/commands/config.rs
@@ -259,6 +259,7 @@ fn detect_installed_source() -> String {
             }
             return "official".into();
         }
+        return "official".into();
     }
     // Windows: 优先通过文件系统检测，避免 npm list 阻塞
     #[cfg(target_os = "windows")]
@@ -479,8 +480,8 @@ pub fn check_node() -> Result<Value, String> {
 
 #[tauri::command]
 pub fn write_env_file(path: String, config: String) -> Result<(), String> {
-    let expanded = if path.starts_with("~/") {
-        dirs::home_dir().unwrap_or_default().join(&path[2..])
+    let expanded = if let Some(stripped) = path.strip_prefix("~/") {
+        dirs::home_dir().unwrap_or_default().join(stripped)
     } else {
         PathBuf::from(&path)
     };
diff --git a/src-tauri/src/commands/device.rs b/src-tauri/src/commands/device.rs
index 10e5285..5f338f3 100644
--- a/src-tauri/src/commands/device.rs
+++ b/src-tauri/src/commands/device.rs
@@ -46,7 +46,7 @@ fn get_or_create_key() -> Result<(String, String, SigningKey), String> {
 
     let device_id = {
         let mut hasher = Sha256::new();
-        hasher.update(&pub_bytes);
+        hasher.update(pub_bytes);
         hex::encode(hasher.finalize())
     };
     let pub_b64 = base64_url_encode(&pub_bytes);
@@ -77,7 +77,7 @@ mod hex {
         data.as_ref().iter().map(|b| format!("{b:02x}")).collect()
     }
     pub fn decode(s: &str) -> Result<Vec<u8>, String> {
-        if s.len() % 2 != 0 {
+        if !s.len().is_multiple_of(2) {
             return Err("奇数长度".into());
         }
         (0..s.len())
diff --git a/src-tauri/src/commands/logs.rs b/src-tauri/src/commands/logs.rs
index e12c539..60e6b98 100644
--- a/src-tauri/src/commands/logs.rs
+++ b/src-tauri/src/commands/logs.rs
@@ -40,11 +40,7 @@ pub fn read_log_tail(log_name: String, lines: Option<u32>) -> Result<String, Str
 
     // 最多从尾部读取 1MB，避免 OOM
     let max_read: u64 = 1024 * 1024;
-    let start_pos = if file_len > max_read {
-        file_len - max_read
-    } else {
-        0
-    };
+    let start_pos = file_len.saturating_sub(max_read);
 
     file.seek(SeekFrom::Start(start_pos))
         .map_err(|e| format!("Seek 失败: {e}"))?;
diff --git a/src-tauri/src/commands/service.rs b/src-tauri/src/commands/service.rs
index 60efd1f..acaac25 100644
--- a/src-tauri/src/commands/service.rs
+++ b/src-tauri/src/commands/service.rs
@@ -465,15 +465,24 @@ pub async fn get_services_status() -> Result<Vec<ServiceStatus>, String> {
 
 #[tauri::command]
 pub async fn start_service(label: String) -> Result<(), String> {
+    #[cfg(target_os = "macos")]
+    return platform::start_service_impl(&label);
+    #[cfg(not(target_os = "macos"))]
     platform::start_service_impl(&label).await
 }
 
 #[tauri::command]
 pub async fn stop_service(label: String) -> Result<(), String> {
+    #[cfg(target_os = "macos")]
+    return platform::stop_service_impl(&label);
+    #[cfg(not(target_os = "macos"))]
     platform::stop_service_impl(&label).await
 }
 
 #[tauri::command]
 pub async fn restart_service(label: String) -> Result<(), String> {
+    #[cfg(target_os = "macos")]
+    return platform::restart_service_impl(&label);
+    #[cfg(not(target_os = "macos"))]
     platform::restart_service_impl(&label).await
 }