Algo Changelog

This is the signal-board changelog for StockArithm.

It tracks only inventory changes that matter to someone deciding whether a signal is worth paying attention to:

added algos
renamed algos
retired algos
metadata or display changes that affect how a signal appears on the public board

It is not the place for site copy, content-system, or workflow changes. Those belong in `PUBLIC_CHANGELOG.md`.

Entry Rules

Log batch additions when they materially change board size or coverage.
Log renames that affect public display.
Log retirements, graveyard moves, or major status changes.
Log large metadata backfills when they change how the board is read.
Do not log every nightly stat change.

2026-05-24

Added

Latest daily signal batch brought the public board to `344` live signals across `105` tickers.

Metadata

Backfilled plain-English descriptions for older signals so existing algo detail pages now explain the signal intent in readable language.

2026-05-20

Hygiene

Removed duplicate algo IDs from the force-rank and rolling-30D layers so every public row now maps to a unique signal identity.

Renamed

Duplicate visible names now use explicit `alt` suffixes instead of silently sharing the same public label.
Example: duplicate Biscotti variants now render with distinct labels instead of appearing as the same signal twice.

Operating Format

Use this structure for future entries:

## YYYY-MM-DD

### Added
- Signal family or batch summary.

### Renamed
- Old visible name -> new visible name.

### Retired
- Signal name and short reason.

### Metadata
- Public-facing description/status/family changes.

Algo changelog