What Lina demonstrated

Built a working KM-Waechter repair and validation pass end to end: fixed the wear calculation so nearly-worn cars are flagged correctly, handled missing service readings without false alarms or crashes, corrected the fleet-distance conversion bug in the helper layer, and added the missing regression test. Also produced a data-driven breakdown-risk analysis and verified the final repo with a full acceptance check before handing it in.

• Leakage-Free Feature Engineering
• Honest Model Evaluation
• Directed AI Agent Auditing