Markets _lib — shared helpers for the markets routes

formatters.ts

Purpose: Format Feed points, volumes, and percentages for dense tables (trending screener, prediction volume column, etc.).

WHY not only @feed/shared:

• Screener-specific rules: ƀ prefix, T/Q volume tiers (so OI and 24h vol never print 15-digit …B strings), and em dash for non-finite API values.
• Shared formatCompactCurrency / formatCompactNumber serve engine and prompts with slightly different defaults (e.g. decimal places). Keeping web table rules here avoids coupling every UI tweak to NPC context.

Documentation: docs/markets/trending-screener.md → Display & formatting.

Tests: packages/testing/unit/markets/market-cards.test.ts.

Other exports

• getDaysLeft, calculateSharePercentages — prediction UI helpers; documented inline in formatters.ts.