some more cosmetic changes

- fix an intend
- add TODO: remove pkg
- add .before_bott_at to backup of seastatus.tcl

seaman.py

@@ -117,7 +117,7 @@ class SeaManager(ServiceManager):
             seastatus = self.get_status_filename(ins)
             if seastatus:
                 boot_time = time.strftime("%Y-%m-%dT%H-%M-%S", time.localtime(psutil.boot_time()))
-                dst = seastatus.replace('.tcl', '') + '.' + boot_time
+                dst = seastatus.replace('.tcl', '') + '.before_boot_at' + boot_time
                 if not exists(dst):
                     os.system(f'cp {seastatus} {dst}')
         return start_dir, env