Improve connect/update robustness

[MTrab]

Summary

• improve robustness of connect and coordinator data update flows when failures occur
• adjust integration behavior and tests around auth/update error handling
• keep manifest version unchanged (1.0.3b1); no dependency changes in this PR

Test strategy

• Ran: pytest -q tests/test_api_coordinator.py tests/test_options_reload_flow.py
• Result: all tests passed (13 passed)

Known limitations

• No additional limitations identified in this change set