core/economy has long been a package (store/income/gambling/shop/levels/
jail/heist/prestige/fishing/quests/leaderboards/house/admin) rather than a
single core/economy.py, but README.md and docs/DEV_NOTES.md still described
it as one file in ~27 places. Point every reference at the real submodule,
add a "Defined in" column to the constants quick-reference and a Module
column to the strings table, and fix the stale FISH -> FISH_CATALOGUE name.
Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
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