Fix Stockfish move color ordering in analysis

[ashtonanderson]

Summary

• add a shared Stockfish move sorter based on the same ranking metrics used for coloring
• use that sorter for Stockfish recommendations and top move selection instead of object key order
• use model_move for the Stockfish arrow rather than assuming the first cp_vec entry is best

Problem

The analysis UI was ordering Stockfish moves from cp_vec, while move colors were derived from winrate_loss_vec or cp_relative_vec. Once those object orders diverged, weaker light-green moves could appear above stronger dark-green moves.

Testing

• npx tsc --noEmit

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Project	Deployment	Actions	Updated (UTC)
maia-platform-frontend	Ready	Preview, Comment	Mar 28, 2026 0:52am