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Train NAIL Quartile Critical Spacing Plus Standard USG%

This combined candidate changes two previously tested conventions relative to NAIL-RAPM v1.2.1: it uses conventional game-level usage_pct in place of usage_per_100, and adds a non-additive Critical Spacing indicator. The indicator is one when two or more players are strictly below the forward-safe, season-state lower quartile of shrunk three_pm_per_100.

uv run nba-train-nail-critical-spacing-quartile-standard-usage \
  --log-path artifacts/logs/nail-critical-spacing-quartile-standard-usage.log

Follow recursive seasonal progress:

tail -f artifacts/logs/nail-critical-spacing-quartile-standard-usage.log

After the recursive fit, run the three frozen seasons and publish the complete three-term non-additive diagnostic chart:

uv run nba-evaluate-nail-critical-spacing-quartile-standard-usage \
  --log-path artifacts/logs/nail-critical-spacing-quartile-standard-usage-frozen.log
uv run nba-audit-nail-critical-spacing-quartile-standard-usage-weights