maziggy 950286ad40 fix(queue): prevent duplicate dispatch and stale progress on batch prints ...

Two related queue issues surfaced when scheduling an ASAP print with
  quantity > 1 on an H2D:

  1. Double-dispatch — both items in the batch ended up in 'printing'
     status on the same printer, logged as "BUG: Multiple queue items in
     'printing' status for printer N". The scheduler seeded its busy
     set empty each tick and relied on _is_printer_idle() reading live
     MQTT state, but H2D / P1 series lag several seconds between the
     print command and IDLE → RUNNING, so the next check_queue() tick
     saw IDLE and dispatched the second batch item onto the already-
     running printer. check_queue() now seeds busy_printers with every
     printer_id that has a row in 'printing' status before iterating,
     so any printer with an outstanding dispatched job is excluded
     regardless of what MQTT currently reports.

  2. Progress bar flashed 100% — immediately after dispatch the queue
     item's per-row progress bar showed the prior print's final mc_percent
     for a few seconds, then snapped back to 0% when the new print
     started ticking. QueuePage.tsx now gates progress / remaining_time /
     layer fields on status.state being RUNNING or PAUSE; in any other
     state (FINISH from the prior print, IDLE, PREPARE while heating)
     the bar renders at 0% with no stale ETA or layer count.

  Regression coverage added in test_phantom_print_hardening.py
  (TestBusyPrinterSeedingFromPrintingItems, 3 tests): seeding query
  returns only printers with 'printing' rows, empty when none exist,
  and end-to-end check_queue() does not call _start_print for a pending
  item whose printer already has a 'printing' row even when
  _is_printer_idle() is forced True.

2026-04-22 17:51:33 +02:00

..

app

fix(queue): prevent duplicate dispatch and stale progress on batch prints

2026-04-22 17:51:33 +02:00

tests

fix(queue): prevent duplicate dispatch and stale progress on batch prints

2026-04-22 17:51:33 +02:00

__init__.py

…