- Handle Task crashes in async_stream with {:exit, reason}
- Return {:error, {:partial_failure, successes, errors}} when some cycles fail
- Previously returned {:ok, successful} even on partial failures
- Improves debuggability and allows callers to handle partial failures
- Remove exit_date filter from generate_cycles_for_all_members query
- Inactive members now get cycles generated up to their exit_date
- Add tests for inactive member processing and exit_date boundary
- Document exit_date == cycle_start behavior (cycle still generated)
