Workshop tool and equipment readiness

One read-only workshop view of unsafe or blocked Tools, scheduled service, authority mismatches, replacement planning, lifecycle evidence, warranty dates and recent inspection/calibration history.

Owner boundary: Tool Lifecycle remains the condition, service, event, calibration-evidence, retirement and replacement write owner. Inventory remains the identity, quantity and do-not-reuse owner. Build 20 never changes those records and never invents an inspection or calibration due schedule.