One int holds all money. grant/take are the sole routing point — currency ids
go to the purse, everything else to inventory. Money is never an inventory row.
The 'coin' stand-in in the two unrelated inventory tests becomes
worn_shortsword; they were never about money.
One integer, stored in copper. The ratios are rules and live in code; prices
are content and land in M8. format() suppresses empty denominations so being
broke reads as '47c', not '0g 0s 47c'.
Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01QYa9u7Kdxv5gX4AnwWexy8
