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What Gracy demonstrated
Built and verified a legacy service fix end to end: corrected the wear calculation with true division, handled missing service readings safely, fixed the fleet report’s average and crash case, and preserved the 15,000 km / 80% business rules. Also added the missing regression test, modernized the surrounding Python style, and documented the agent review and acceptance checks in NOTES.md.
- Bug Diagnosis from Symptoms
- Verified Acceptance Checking
- AI Output Auditing
- Data-Driven Reasoning
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