Files
bambuddy/backend
maziggy 72044e3a53 fix(usage): scope 3MF filament tracking to dispatched plate (#1697)
When a print targets a single plate from a multi-plate 3MF, both the
  internal Filament Inventory tracker and the Spoolman-mode tracker parsed
  the 3MF without a plate filter and summed every plate's filament — so a
  single lid print debited the spool the entire file's grey + black totals.

  The 3MF parser already supports plate_id (queue pre-flight uses it at
  print_queue.py:254/:286). Plumbed it through both dispatch paths:

  Queue path:
  - PrintSession gains a plate_id field; on_print_start queries the
    printer's currently-printing queue row and records queue_item.plate_id
    onto the session.
  - _track_from_3mf accepts plate_id and passes it to the extractor.
  - store_print_data moves its existing queue-item lookup above the
    extract and uses queue_item.plate_id as the plate filter.

  Direct-Print path (reprintArchive / printLibraryFile — never goes
  through the queue):
  - _print_plate_ids dict added in main.py, parallel to _print_ams_mappings.
  - register_expected_print accepts plate_id and stores it; the 2 sites in
    background_dispatch.py and the 1 site in print_scheduler.py now pass
    it (resolve was already happening, just needed reordering before the
    register call so the value is available).
  - Expected-print promotion in main.py injects _print_plate_ids[archive_id]
    into the session, guarded so a queue capture wins over the dict.
  - _get_start_plate_id helper feeds plate_id into all 3
    _store_spoolman_print_data call sites; spoolman_tracking.store_print_data
    takes the caller value first, falls back to queue_item.plate_id.

  PrintArchive.filament_used_grams stays file-level summed by design
  (#1593's contract — the archive describes the file, not the run); only
  the per-run usage attribution becomes plate-aware. Single-plate direct
  prints resolve to plate_id=1 → plate 1 = whole file, identical to the
  prior no-filter behaviour.
2026-06-09 09:16:36 +02:00
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