fix(agent): rearm control capture after device reconnect

[Phecda]

Summary

Restore programmable controls after a Logitech device reconnects or switches between Bluetooth and Unifying, without requiring an agent restart.

Changes

• openlogi-hidpp / openlogi-hid
  • Expose HID transport liveness and stop stale capture sessions after confirmed disconnects.
  • Keep cached Unifying capabilities separate from current device reachability.
  • Confirm Unifying reachability with a root ping after battery refresh errors.
  • Abandon stale firmware state on disconnect while preserving normal restoration for ordinary route or configuration changes.
• openlogi-agent-core / openlogi-agent
  • Re-arm control capture when the selected device reconnects.
  • Re-arm capture after system wake.
  • Add regression coverage for reconnect and capture lifecycle behavior.

Testing

• cargo fmt --all -- --check
• cargo clippy --workspace --all-targets --locked -- -D warnings
• cargo test --workspace --locked
• Hardware-tested on macOS with an MX Master 3:
  • Bluetooth → Unifying → Bluetooth switching
  • Auxiliary and gesture actions recovered on both transports
• The transient Unifying battery-error fallback was covered by an automated HID++ channel test but was not reproduced on hardware.