Hubs keep reporting for children they have lost contact with, so callers
see stale values as if they were live. Trying to write to such devices
fail after timeouts with a generic error.
This PR exposes the offline/online information as reported by the hub,
and refuses writes to unreachable child devices without waiting for
device errors.
In details:
- Add new API: `Device.is_available`; hub children report unavailable
when the hub marks them offline or no longer lists them.
- New feature `available` for child devices to make it visible to the
CLI.
- Refuse writes to unavailable children with the new
`DeviceUnavailableError` instead of waiting for the hub to time out.
This PR adds update_admin_password in the library and CLI for SMARTCAM
devices. It also updates the update_credentials function to correctly
handle the local_account for local device authentication. It updates all
of the required tests and code coverage as well.
Update SmartCam time handling to apply timezone-only changes with explicit warnings, while keeping common time and CLI tests focused on devices that support setting clock time and adding SmartCam-specific coverage for the special behavior.
Add type annotations (`-> None` return types and parameter types) to
test files in the `tests/cli/`, `tests/protocols/`, and
`tests/smartcam/` directories. This enables mypy to check test function
bodies, catching type errors that were previously hidden.
