feat: 统一 Commilitia Drop 全客户端命名与分发

desktop/platform/launchagent_darwin.go

@@ -10,8 +10,8 @@ import (
 	"strings"
 )
 
-// launchAgentLabel is the reverse-DNS label + plist filename for the per-user
-// LaunchAgent that starts cdrop at login.
+// launchAgentLabel is a stable internal identifier. The product name shown to
+// users comes from the application metadata, not this LaunchAgent label.
 const launchAgentLabel = "net.commilitia.cdrop"
 
 func launchAgentPath() (string, error) {
@@ -71,7 +71,40 @@ func SetLaunchAtLogin(enabled bool) error {
 	if err := os.MkdirAll(filepath.Dir(p), 0o755); err != nil {
 		return err
 	}
-	return os.WriteFile(p, []byte(buildLaunchAgentPlist(launchAgentLabel, args)), 0o644)
+	if err := writeLaunchAgentAtomically(
+		p,
+		[]byte(buildLaunchAgentPlist(launchAgentLabel, args)),
+	); err != nil {
+		return err
+	}
+	return nil
+}
+
+func writeLaunchAgentAtomically(path string, contents []byte) error {
+	dir := filepath.Dir(path)
+	f, err := os.CreateTemp(dir, "."+filepath.Base(path)+".tmp-*")
+	if err != nil {
+		return err
+	}
+	tempPath := f.Name()
+	defer os.Remove(tempPath)
+
+	if err := f.Chmod(0o644); err != nil {
+		f.Close()
+		return err
+	}
+	if _, err := f.Write(contents); err != nil {
+		f.Close()
+		return err
+	}
+	if err := f.Sync(); err != nil {
+		f.Close()
+		return err
+	}
+	if err := f.Close(); err != nil {
+		return err
+	}
+	return os.Rename(tempPath, path)
 }
 
 // IsLaunchAtLoginEnabled reports whether the LaunchAgent plist is present.