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The sidebar extruder cards get an interactive title row — "<name> ( <count> )" with an edit button — showing the extruder's physical nozzle count on multi-nozzle printers (hidden elsewhere). Clicking it opens the existing "Set nozzle count" dialog, which now also handles a Hybrid extruder by offering both Standard and High Flow counts (an empty mix is rejected) and shows a hotend thumbnail. Because `extruder_nozzle_stats` is session-only (saved presets never carry it, so preset switches rebuild the edited config without it), the stats are re-baselined whenever they are missing: each extruder starts with extruder_max_nozzle_count nozzles of its selected volume type. Switching an extruder's flow type carries its total count over to the new type, except when the stats came from a device sync — the machine-reported per-type breakdown must survive a manual flow switch. The badge refreshes on preset load, flow-type change, manual edit, device sync, and project load. Single-extruder cards keep the title row but never enable editing.