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Clifford GarwoodandClaude Opus 5
ef8d80980d
get_imex_active_tools returned every physical head named by the active mode's tool string, including the one carrying the Primary role. The pressure-advance and nozzle-temperature sites are already gated on the mode not being primary, so only the is_extruder_used supplement was exposed. In primary mode that supplement treated the mode's single declared tool as a secondary carriage and marked its filament slot used, so machine_start_gcode emitted a heat command for an extruder that never prints. The phantom slot appears when the mode's declared tool differs from the head the initial tool routes to through physical_extruder_map -- on an AFC/MMU layout, printing with a filament that lives on any head other than the declared one. Return an empty roster for primary mode, where there are no parallel carriages by definition. This lives in the enumerator rather than at the call site because the mode is already resolved and normalized there, and the two guarded callers cannot reach it in that mode, so their behaviour is unchanged. Scope: this closes the primary-mode instance. The same phantom slot still occurs in a parallel mode when the initial tool's head is not the mode's declared Primary, which turns on which of the two notions of "primary" the three emission sites should skip. That question is unresolved and deliberately left alone here. Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>