fix(inventory): PA-Profil picker fetches K-profiles across all installed nozzles (#2618)

The Edit Spool "PA-Profil" tab and the SpoolBuddy write-tag page fetched a
printer's calibrations with getKProfiles(printer.id), which defaults the nozzle
filter to 0.4. The printer/MQTT layer filters strictly by that diameter, so on
a multi-nozzle printer a same-filament 0.6mm K-profile was never retrieved and
the picker showed only the 0.4mm entry ("1 match"). (The AMS-Slot config dialog
was already fixed in #1899; these two pickers were not.)

Add installedNozzleDiameters(status) and a shared fetchPrinterCalibrations()
that queries every reported nozzle diameter and merges the results, falling
back to 0.4 when the printer hasn't reported nozzle hardware. Each profile row
now shows a nozzle-diameter badge so identically-named profiles are distinct.

frontend/src/components/SpoolFormModal.tsx

@@ -8,7 +8,7 @@ import { Button } from './Button';
 import { useToast } from '../contexts/ToastContext';
 import type { SpoolFormData, PrinterWithCalibrations, ColorPreset } from './spool-form/types';
 import { defaultFormData, validateForm, SPOOLMAN_LINKED_FIELDS } from './spool-form/types';
-import { buildFilamentOptions, extractBrandsFromPresets, findPresetOption, loadRecentColors, parsePresetName, saveRecentColor } from './spool-form/utils';
+import { buildFilamentOptions, extractBrandsFromPresets, fetchPrinterCalibrations, findPresetOption, loadRecentColors, parsePresetName, saveRecentColor } from './spool-form/utils';
 import { MATERIALS } from './spool-form/constants';
 import { FilamentSection } from './spool-form/FilamentSection';
 import { ColorSection } from './spool-form/ColorSection';
@@ -201,21 +201,9 @@ export function SpoolFormModal({
               const connected = status?.connected ?? false;
               let calibrations: PrinterWithCalibrations['calibrations'] = [];
               if (connected) {
-                try {
-                  const kRes = await api.getKProfiles(printer.id);
-                  calibrations = kRes.profiles.map(p => ({
-                    cali_idx: p.slot_id,
-                    filament_id: p.filament_id,
-                    setting_id: p.setting_id || '',
-                    name: p.name,
-                    k_value: parseFloat(p.k_value) || 0,
-                    n_coef: parseFloat(p.n_coef) || 0,
-                    extruder_id: p.extruder_id,
-                    nozzle_diameter: p.nozzle_diameter,
-                  }));
-                } catch {
-                  // Printer may not support K-profiles
-                }
+                // Fetch across every installed nozzle so dual-nozzle printers
+                // surface both the 0.4mm and 0.6mm K-profiles, not just 0.4 (#2618).
+                calibrations = await fetchPrinterCalibrations(printer.id, status);
               }
               results.push({ printer: { ...printer, connected }, calibrations });
             }