fix(lint): resolve pyright and pylint issues in provider/backend changes

- Remove unused Bottle import from docker/backend.py (pyright)
- Suppress wrong-import-position on circular-import-avoiding
  deferred imports in backend/__init__.py (pylint C0413)
- Add encoding="utf-8" to read_text() in smolmachines provision
  test (pylint W1514)
- Suppress consider-using-with on TemporaryDirectory setUp pattern
  in both provision test files (pylint R1732)

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

bot_bottle/backend/__init__.py

@@ -411,8 +411,8 @@ class BottleBackend(ABC, Generic[PlanT, CleanupT]):
 # Import concrete backend classes AFTER the base types are defined, so
 # each backend module can pull BottleSpec / BottlePlan / BottleBackend
 # via `from . import ...` without hitting a partially-initialized module.
-from .docker import DockerBottleBackend  # noqa: E402
-from .smolmachines import SmolmachinesBottleBackend  # noqa: E402
+from .docker import DockerBottleBackend  # noqa: E402  # pylint: disable=wrong-import-position
+from .smolmachines import SmolmachinesBottleBackend  # noqa: E402  # pylint: disable=wrong-import-position
 
 
 # The dict is heterogeneous: each value is a BottleBackend specialized

bot_bottle/backend/docker/backend.py

@@ -25,7 +25,7 @@ from pathlib import Path
 from typing import Generator, Sequence
 
 from ...supervise import SUPERVISE_HOSTNAME, SUPERVISE_PORT
-from .. import ActiveAgent, Bottle, BottleBackend, BottleSpec
+from .. import ActiveAgent, BottleBackend, BottleSpec
 from . import cleanup as _cleanup
 from . import enumerate as _enumerate
 from . import launch as _launch

tests/unit/test_docker_provision_git_user.py

@@ -120,7 +120,7 @@ def _git_config_exec_calls(bottle: MagicMock) -> list[tuple[str, str]]:
 
 class TestProvisionGitUser(unittest.TestCase):
     def setUp(self):
-        self._tmp = tempfile.TemporaryDirectory(prefix="cb-prov-git-user.")
+        self._tmp = tempfile.TemporaryDirectory(prefix="cb-prov-git-user.")  # pylint: disable=consider-using-with
         self.stage = Path(self._tmp.name)
 
     def tearDown(self):

tests/unit/test_smolmachines_provision.py

@@ -254,7 +254,7 @@ class TestProvisionCA(unittest.TestCase):
     cp_in + exec in the right order."""
 
     def setUp(self):
-        self._tmp = tempfile.TemporaryDirectory(prefix="cb-prov-ca.")
+        self._tmp = tempfile.TemporaryDirectory(prefix="cb-prov-ca.")  # pylint: disable=consider-using-with
         self.tmp = Path(self._tmp.name)
         self.egress_ca = self.tmp / "egress-ca.pem"
         _write_self_signed_cert(self.egress_ca)
@@ -346,7 +346,7 @@ class TestProvisionGit(unittest.TestCase):
     when its condition doesn't hold."""
 
     def setUp(self):
-        self._tmp = tempfile.TemporaryDirectory(prefix="cb-prov-git.")
+        self._tmp = tempfile.TemporaryDirectory(prefix="cb-prov-git.")  # pylint: disable=consider-using-with
         self.stage = Path(self._tmp.name)
 
     def tearDown(self):
@@ -407,7 +407,7 @@ class TestProvisionGit(unittest.TestCase):
         cp_call = bottle.cp_in.call_args
         staged_path = Path(cp_call.args[0])
         self.assertEqual(self.stage, staged_path.parent)
-        content = staged_path.read_text()
+        content = staged_path.read_text(encoding="utf-8")
         self.assertIn(
             '[url "http://127.0.0.1:9418/bot-bottle.git"]', content,
         )
@@ -507,7 +507,7 @@ class TestProvisionGitUser(unittest.TestCase):
 
 class TestProvisionWorkspace(unittest.TestCase):
     def setUp(self):
-        self._tmp = tempfile.TemporaryDirectory(prefix="cb-prov-workspace.")
+        self._tmp = tempfile.TemporaryDirectory(prefix="cb-prov-workspace.")  # pylint: disable=consider-using-with
         self.stage = Path(self._tmp.name)
 
     def tearDown(self):