Artifact: Context-Window Budget Report

A session's reported context usage (files loaded, token count) checked against the harness's documented context limit -- exercises co-03.

File loaded	Tokens	Running total
src/orders/checkout.py	420	420
src/orders/calculate_total.py	180	600
tests/test_checkout.py	610	1,210
README.md	1,150	2,360
CHANGELOG.md	3,200	5,560

Documented context-window ceiling for this session's harness: 200,000 tokens (stated in the harness's own session-configuration report). After loading all five files, the session's own reported running total is 5,560 tokens -- roughly 2.8% of that ceiling.

Verify: the reported running total (5,560) is checked directly against the harness's documented context-window limit (200,000), confirming ample headroom rather than an unexamined number -- satisfying ex-03's rule of checking the reported count against the documented limit.