Unpin tmodbus and bump to 0.5.0

tmodbus 0.5.0 made tenacity a required dependency and dropped the now
empty `smart` extra, so the requirement becomes `tmodbus[async-serial]`.

Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>

Author: balloob

custom_components/solax_modbus/manifest.json

@@ -9,6 +9,6 @@
   "integration_type": "hub",
   "iot_class": "local_polling",
   "issue_tracker": "https://github.com/wills106/homsassistant-solax-modbus/issues",
-  "requirements": ["pymodbus>=3.8.3", "tmodbus[async-serial,smart]==0.4.1"],
+  "requirements": ["pymodbus>=3.8.3", "tmodbus[async-serial]>=0.5.0"],
   "version": "2026.08.2"
 }

custom_components/solax_modbus/serial_modbus.py

@@ -69,7 +69,7 @@ def connected(self) -> bool:
 
     def _new_client(self) -> AsyncModbusClient:
         """Create a Modbus RTU client whose byte transport is SerialX."""
-        # tmodbus 0.4.1 forwards timeout at runtime but omits it from SerialXOptions.
+        # tmodbus forwards timeout at runtime but omits it from SerialXOptions.
         return create_async_rtu_client(  # type: ignore[call-arg]
             self._port,
             unit_id=_PLACEHOLDER_UNIT_ID,

pyproject.toml

@@ -6,7 +6,7 @@ readme = "README.md"
 requires-python = ">=3.12"
 dependencies = [
     "pymodbus>=3.8.3",
-    "tmodbus[async-serial,smart]==0.4.1",
+    "tmodbus[async-serial]>=0.5.0",
 ]
 
 [dependency-groups]

tests/unit/test_serial_config.py

@@ -39,4 +39,4 @@ def test_manifest_loads_usb_and_serialx_backend() -> None:
     manifest = json.loads(manifest_path.read_text())
 
     assert "usb" in manifest["dependencies"]
-    assert "tmodbus[async-serial,smart]==0.4.1" in manifest["requirements"]
+    assert "tmodbus[async-serial]>=0.5.0" in manifest["requirements"]