refactor(mypy): Adopt Python 3.10 typing idioms

- replace remaining Optional/Union patterns with PEP 604 unions aligned to the new baseline
- remove outdated version blocks for Python 3.10 (now minimum)
- add explicit strict=False to zip-based operations to satisfy Ruff B905

uv run ruff check . --fix --show-fixes
uv run ruff format .
uv run mypy
uv run py.test

Author: tony

src/libvcs/_internal/query_list.py

@@ -489,7 +489,7 @@ def __eq__(
             return False
 
         if len(self) == len(data):
-            for a, b in zip(self, data):
+            for a, b in zip(self, data, strict=False):
                 if isinstance(a, Mapping):
                     a_keys = a.keys()
                     if a.keys == b.keys():

src/libvcs/_internal/run.py

@@ -100,7 +100,7 @@ def __call__(self, output: str, timestamp: datetime.datetime) -> None:
 else:
     _ENV: TypeAlias = Mapping[bytes, StrPath] | Mapping[str, StrPath]
 
-_CMD = t.Union[StrPath, Sequence[StrPath]]
+_CMD = StrPath | Sequence[StrPath]
 _FILE: TypeAlias = int | t.IO[t.Any] | None
 
 

src/libvcs/_internal/subprocess.py

@@ -188,8 +188,7 @@ class SubprocessCommand(SkipDefaultFieldsReprMixin):
     start_new_session: bool = False
     pass_fds: t.Any = ()
     umask: int = -1
-    if sys.version_info >= (3, 10):
-        pipesize: int = -1
+    pipesize: int = -1
     user: str | None = None
     group: str | None = None
     extra_groups: list[str] | None = None

src/libvcs/cmd/git.py

@@ -11,7 +11,7 @@
 from libvcs._internal.run import ProgressCallbackProtocol, run
 from libvcs._internal.types import StrOrBytesPath, StrPath
 
-_CMD = t.Union[StrOrBytesPath, Sequence[StrOrBytesPath]]
+_CMD = StrOrBytesPath | Sequence[StrOrBytesPath]
 
 
 class Git:

src/libvcs/cmd/hg.py

@@ -19,7 +19,7 @@
 from libvcs._internal.run import ProgressCallbackProtocol, run
 from libvcs._internal.types import StrOrBytesPath, StrPath
 
-_CMD = t.Union[StrOrBytesPath, Sequence[StrOrBytesPath]]
+_CMD = StrOrBytesPath | Sequence[StrOrBytesPath]
 
 
 class HgColorType(enum.Enum):

src/libvcs/cmd/svn.py

@@ -18,10 +18,10 @@
 from libvcs._internal.run import ProgressCallbackProtocol, run
 from libvcs._internal.types import StrOrBytesPath, StrPath
 
-_CMD = t.Union[StrOrBytesPath, Sequence[StrOrBytesPath]]
+_CMD = StrOrBytesPath | Sequence[StrOrBytesPath]
 
-DepthLiteral = t.Union[t.Literal["infinity", "empty", "files", "immediates"], None]
-RevisionLiteral = t.Union[t.Literal["HEAD", "BASE", "COMMITTED", "PREV"], None]
+DepthLiteral = t.Literal["infinity", "empty", "files", "immediates"] | None
+RevisionLiteral = t.Literal["HEAD", "BASE", "COMMITTED", "PREV"] | None
 
 
 class SvnPropsetValueOrValuePathRequired(exc.LibVCSException, TypeError):

src/libvcs/sync/git.py

@@ -87,7 +87,7 @@ class GitRemote:
 
 
 GitSyncRemoteDict = dict[str, GitRemote]
-GitRemotesArgs = t.Union[None, GitSyncRemoteDict, dict[str, str]]
+GitRemotesArgs = None | GitSyncRemoteDict | dict[str, str]
 
 
 @dataclasses.dataclass