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maziggy
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The plate-clear gate added in #961 was raised only when a print ended with status completed or failed. Aborted prints (printer self-abort or a user stopping the print from the printer's own touchscreen) and cancelled prints (user stopping via the Bambuddy queue UI) did NOT raise the flag, so the queue scheduler dispatched the next pending item ~2 seconds later onto a fouled bed. The reporter saw two prints (P1P + P1S) auto-start onto fouled beds within seconds of touchscreen-aborts, and explicitly flagged the risk of damage to the printer. A third printer behaved correctly because its previous print had ended "completed" — the asymmetry he noticed was the gate working for one terminal status and not the other three. Touchscreen-aborts are particularly important to gate. Bambuddy's existing "user stopped via UI" override (which translates aborted to cancelled when _user_stopped_printers is populated) only fires for stops through the Bambuddy queue UI; a touchscreen stop reports aborted straight through. The original code comment claimed user-cancelled prints don't need a plate-clear ack because "nothing printed on the bed". That only holds if you cancel right at layer 1; a cancel at hour 11 of a 12-hour print leaves a fully fouled bed. The gate is user-clearable on the Printers page, so worst case a user who cancels at layer 1 clicks "Clear Plate" once — that's a non-issue compared to auto-dispatching onto material. Regression coverage in test_print_lifecycle.py::TestPlateClearGate: parametrised across all 4 terminal statuses asserting set_awaiting_plate_clear(printer_id, True) is called for each, plus a defence-in-depth test that an unrecognised future status string never silently raises the gate.