Warnings about existential risks that AI poses to consulting firms are forcing a rethink of entrenched billing practices in the profession, but the transition to charging clients a new way is proving ...

"""Tests for BillingCycle.run — fully implemented. These tests use the `repos` fixture and helpers from conftest.py. Tests are deterministic (no datetime.now), one ACTIVE customer per test (mostly).

if qty1 == 0 and qty2 == 0 and qty3 ==0 and qty4 == 0: messagebox.showwarning("No order", "Please!,Place order first... ") ...