fix: Address race condition and dependency compatibility issues

- Fix race condition between BLEInterface.close() and _on_ble_disconnect()
  by checking self._closing flag to prevent concurrent BLEClient.close() calls
- Pin protobuf to ^4.25.3 and types-protobuf to ^4.25.3 for compatibility
- Prevent RuntimeError from concurrent access to BLEClient event loop
- Ensure close() has exclusive control over shutdown process once initiated

Critical fixes that prevent installation failures and runtime race conditions
during BLE interface disconnection scenarios.

Author: jeremiah-k

meshtastic/ble_interface.py

@@ -108,6 +108,10 @@ def __repr__(self):
 
     def _on_ble_disconnect(self, client) -> None:
         """Disconnected callback from Bleak."""
+        if self._closing:
+            logger.debug("Ignoring disconnect callback because a shutdown is already in progress.")
+            return
+
         address = getattr(client, "address", repr(client))
         logger.debug(f"BLE client {address} disconnected.")
         if self.auto_reconnect:

pyproject.toml

@@ -9,7 +9,7 @@ readme = "README.md"
 [tool.poetry.dependencies]
 python = "^3.9,<3.14"                                               # 3.9 is needed for pandas, bleak requires <3.14
 pyserial = "^3.5"
-protobuf = ">=4.21.12"
+protobuf = "^4.25.3"
 tabulate = "^0.9.0"
 requests = "^2.31.0"
 pyyaml = "^6.0.1"
@@ -37,7 +37,7 @@ pylint = "^3.2.3"
 pyinstaller = "^6.8.0"
 mypy = "^1.10.0"
 mypy-protobuf = "^3.3.0"
-types-protobuf = "^5.26.0.20240422"
+types-protobuf = "^4.25.3"
 types-tabulate = "^0.9.0.20240106"
 types-requests = "^2.31.0.20240406"
 types-setuptools = "^69.5.0.20240423"