F.1 Operating principles

What it does

• Production complete ≠ QC passed: a stage with an inspection moves to Awaiting QC; only the QC Inspector confirms PASS / FAIL.
• Scanning a QR code grants no rights – users still have to sign in; permissions are checked on the server.
• History is never overwritten: every report, inspection and correction is a separate record; corrections keep the old / new value, approver and reason.
• Output is never double-counted: when several people work on a piece, factory tonnage is counted once and each person records their share.
• Workers with history are never deleted (only resigned / inactive / transferred); editing a process never changes the status of completed components automatically.