Release v0.31.13 - "Turbo Comet"

Release Date: January 26, 2026

Bug Fixes

• Fix remaining ground_threshold defaults in stability.py and Rust lib.rs
• Complete ground_threshold default consistency in all fallback paths
• Consistent ground_threshold defaults across all code paths
• Switch Amazon product endpoint to new RapidAPI provider
• Add request throttling to Amazon product endpoint
• Add rate limit cooldown to Amazon product endpoint
• Add BC tolerance validation to prevent mismatch in segment matching (MBA-589) MBA-589
• Critical wind drift bug in trajectory sampler when z_vals is zero

Documentation

• Add release notes for v0.31.12
• Add release notes for v0.31.11
• Add release notes for v0.31.10
• Add release notes for v0.31.7
• Add release notes for v0.31.6
• Add release notes for v0.31.3
• Add release notes for v0.31.2

Chores

• Use realistic BC range (0.25-0.8) in parameter sweep test
• Add trajectory range coverage integration tests
• Bump version to 0.31.7
• Add BC enhancement sweep integration tests (MBA-589) MBA-589
• Bump version to 0.31.5, update ballistics-engine to v0.13.21
• Bump version to 0.31.2, update ballistics-engine to v0.13.19

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