v2.1.0 — Chemistry Data Fix & Security Hardening

What's Changed

Chemistry Data Fixes

• LFP thermal runaway: 120°C → 250°C (matches LiFePO4 datasheet)
• NMC thermal runaway: 80°C → 150°C, gas venting: 70°C → 120°C
• NCA thermal runaway: 75°C → 140°C, gas venting: 65°C → 120°C
• NMC/NCA overdischarge: 2.7V → 2.5V
• NMC/NCA cell_min_voltage: 3.0V → 2.5V
• OCV curves: Fixed boundary values for LFP (2.00→2.50V), NMC/NCA (2.50→3.00V), added missing 95% SOC points
• LFP gas venting: 90°C → 130°C

Thermal Runaway Detection

• Critical temp threshold: 65°C → 85°C (realistic trigger point)
• High temp threshold: 55°C → 65°C
• Critical dT/dt: 5°C/min → 10°C/min (reduces false positives)
• Removed double temperature penalty in risk_score calculation
• Added confidence clamping to [0.0, 1.0] range

Battery Scoring

• Rebalanced weights: THERMAL 0.15→0.25, ANOMALY 0.25→0.15 (sum=1.0)

Security Hardening

• dbc_parser.py: Added path traversal protection (realpath + extension check)
• analysis.py: Added 100MB file size limit on joblib.load (anti-RCE)
• framework.py: Added input data copy to prevent caller mutation
• config.py: Lowered critical_soh threshold 70% → 50% (industry standard)

Test Corrections

• Updated 47 tests across 4 test files to match corrected values
• All 948 tests passing