test(smolmachines): annotate pyright test helpers

tests/unit/test_smolmachines_loopback_alias.py

@@ -361,7 +361,7 @@ class TestForceAllowlist(unittest.TestCase):
         # force_allowlist must fail closed rather than boot the VM.
         original = loopback_alias._read_machine_cfg
 
-        def stale_cfg(con, name):
+        def stale_cfg(con: sqlite3.Connection, name: str) -> dict[str, object]:
             # Always report the un-patched row so the post-write
             # verification never sees the requested cidrs.
             cfg = original(con, name)

tests/unit/test_smolmachines_util.py

@@ -97,7 +97,7 @@ class TestKvmPreflight(unittest.TestCase):
     """Linux-only KVM gate: smolvm needs /dev/kvm present and
     accessible. macOS skips this entirely (Hypervisor.framework)."""
 
-    def _run(self, *, system, exists, access):
+    def _run(self, *, system: str, exists: bool, access: bool) -> None:
         with patch(
             "bot_bottle.backend.smolmachines.util.shutil.which",
             return_value="/usr/bin/smolvm",