Adds a `tool_calls` list field to `TurnTrace` capturing name, arguments,
and result for each tool invocation, enabling PinchBench transcript integration.
Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
The FLOPs formula changed from quadratic (P*N*(N+1)) to linear
(2*P*T_evaluated) with KV-cache awareness. Update the test
expectation from ~100x to ~10x for 10x token increase.
The energy_wh_saved and flops_saved values were orders of magnitude too
high because a scaling factor that grows linearly with N was applied to
the energy calculation, making it scale as O(N³) instead of O(N²).
Replace the buggy scale-factor approach with a direct FLOP-to-energy
conversion using each provider's per-token constants. Add regression
tests to prevent recurrence.
Closes#95
Co-authored-by: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
