Fix lint issues and attempt to solve e2e race condition

Author: kirkbrauer

python/packages/jumpstarter-cli/jumpstarter_cli/shell.py

@@ -21,7 +21,7 @@
 from jumpstarter.common import HOOK_WARNING_PREFIX, ExporterStatus
 from jumpstarter.common.exceptions import ConnectionError, ExporterOfflineError
 from jumpstarter.common.utils import launch_shell
-from jumpstarter.config.client import ClientConfigV1Alpha1, raise_expired_token_error
+from jumpstarter.config.client import ClientConfigV1Alpha1
 from jumpstarter.config.exporter import ExporterConfigV1Alpha1
 
 logger = logging.getLogger(__name__)

python/packages/jumpstarter/jumpstarter/client/core.py

@@ -520,6 +520,10 @@ async def log_stream():  # noqa: C901
                         # Stream was cancelled, likely shutting down
                         self.logger.debug("Log stream cancelled")
                         break
+                    elif e.code() == StatusCode.UNIMPLEMENTED:
+                        # Old exporters don't support LogStream — stop retrying permanently
+                        self.logger.debug("Log stream not implemented (old exporter), skipping")
+                        break
                     else:
                         self.logger.debug("Log stream error: %s", e.code())