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21b46044d0
- the g-code writer tracks the current layer id and resolves FILAMENT_CONFIG/NOZZLE_CONFIG (plus every non-macro variant lookup, toolchange placeholder scalars, and the change-filament flush overrides) through Print's per-filament, per-layer config-index resolvers instead of the filament->extruder collapse - update_layer_related_config refreshes the per-layer extruder/volume/nozzle maps in the writer config; update_placeholder_parser_with_variant_params remaps the filament-variant arrays into filament-id space for custom g-code (Orca's flush placeholder computation moves inside it) - the engine's concrete per-filament volume assignment now merges into the config write-back (the temporary hold from the producer commit is lifted together with these consumers), and the background process reads the computed volume map back to the plate - append_full_config dumps the resolved filament_map_2 slots - update_used_filament_values gains a bounds guard - tests: per-filament Hybrid slot resolution + null-result fallback Result: on a Hybrid extruder, each filament's features slice with its assigned sub-nozzle's variant values (speeds, volumetric limits, retraction). Verified on a 4-filament H2C Hybrid project: outer walls split into three feedrate populations (30/50/200 mm/s), toolpath geometry byte-identical, deterministic across repeated slices. All 18 non-Hybrid reference fixtures stay byte-identical except the filament_map_2 header value now showing the real slot. Auto grouping ties (multiple zero-flush perfect matchings) may pick a different filament-to-nozzle isolation than other slicers; verified co-optimal.