refactor(backend): verb-first names for the provisioning modules

Rename the module files to match their functions' verb-first names:
`bottle_provision.py` -> `provision_bottle.py`,
`gateway_provision.py` -> `provision_gateway.py` (and the test file to match).
Imports, docstrings, and the git_gate/service.py pointer updated.

Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>

bot_bottle/backend/macos_container/consolidated_launch.py

@@ -40,7 +40,7 @@ from ...log import info
 from ...orchestrator.client import OrchestratorClient, OrchestratorClientError
 from ...orchestrator.reprovision import reprovision_bottles
 from ...orchestrator.store.secret_store import ENV_VAR_SECRET_NAME
-from ..bottle_provision import deprovision_bottle, provision_bottle
+from ..provision_bottle import deprovision_bottle, provision_bottle
 from . import util as container_mod
 from .enumerate import CONTAINER_NAME_PREFIX, EnumerationError, enumerate_active
 from .gateway import GATEWAY_NETWORK

bot_bottle/backend/macos_container/gateway_transport.py

@@ -2,7 +2,7 @@
 
 How the launcher stages files + runs commands in the running gateway container:
 the `container` CLI's exec/cp equivalents. The backend-neutral provisioning
-logic that drives it lives in `backend.gateway_provision`; Docker uses
+logic that drives it lives in `backend.provision_gateway`; Docker uses
 `docker exec`/`docker cp` and Firecracker uses SSH.
 """