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jmoore-skild
ae36d3ac13
`_match_kprofile` scoped candidates by `filament_id` alone, and
`_current_kprofile_index` reads the live index per nozzle *diameter* — so on a
dual-nozzle printer both extruders' profiles come back in one list.
On an H2D with the same filament calibrated on both extruders, the `setting_id`
arm then matched whichever profile the printer happened to list first. A
backed-up extruder-0 entry took extruder 1's slot and went into the batch as
`{extruder_id: 0, cali_idx: <extruder-1 slot>}`, writing one extruder's
calibration over the other's and counting it restored. With an entry per
extruder — the ordinary case, since the same preset on both nozzles is what a
dual-nozzle printer is for — the two swapped slots and clobbered each other.
The `name` arm and the single-candidate fallback were equally unscoped, so this
was never only about the ambiguous case.
The data was already in hand and already being read: the backup entry carries
`extruder_id` (`:1546` copies it straight into the outgoing dict) and
`KProfile` has carried `extruder_id: int` on the live side all along. Scope
`candidates` by it the same way `filament_id` already scopes them, and the
single-candidate fallback narrows with them — ambiguity is judged within one
extruder now.
Conditional on both sides saying which extruder they mean. A pre-#2656 backup
has no `extruder_id`, and a live index that reports none must not turn every
entry into an add — that would be a far worse regression than the bug. Two
controls cover each direction of that.
`claimed` (G3) is untouched: it is per nozzle-loop and this only narrows the
candidate set feeding it.
Tests: +4 across the three restore files (270 -> 274). Fail-pre-fix 2 (each
extruder keeps its own slot; the other extruder's profile is not a stand-in),
controls that pass either way 2.