Remove the price-table cost derivation entirely. The transcript carries
no metered cost, and list prices vary by plan — so converting tokens to
a dollar figure dressed an estimate up as a number. Report raw token
counts instead, kept split by class (input / output / cache-creation /
cache-read) with a `total_tokens` sum per scope.
Script: drop DEFAULT_PRICING / load_pricing / rate_for / cost_of and the
--pricing flag; aggregate_transcript and analyze_subagents no longer take
a pricing arg; every `cost_usd` field becomes `total_tokens`; the pricing
warning is gone. SKILL.md: the first graded axis is now "Token spend &
efficiency", the scorecard and output format cite token counts, and the
Iron Law / Red Flags now forbid converting tokens to a cost.
cache_hit_ratio and the active-session warning are unchanged.
Brummel
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