y Remove diagnostic buttons from SpoolBuddy Write Tag page

The NFC Diag and Scale Diag buttons on the Write Tag page's right
  card were misplaced — diagnostics are already available on the
  Settings page. Removed the buttons and all associated dead code.

frontend/src/pages/spoolbuddy/SpoolBuddyWriteTagPage.tsx

@@ -2,7 +2,6 @@ import { useState, useEffect, useCallback, useMemo } from 'react';
 import { useOutletContext } from 'react-router-dom';
 import { useQuery } from '@tanstack/react-query';
 import { useTranslation } from 'react-i18next';
-import { DiagnosticModal } from '../../components/spoolbuddy/DiagnosticModal';
 import type { SpoolBuddyOutletContext } from '../../components/spoolbuddy/SpoolBuddyLayout';
 import {
   api,
@@ -45,7 +44,7 @@ export function SpoolBuddyWriteTagPage() {
   const [untagging, setUntagging] = useState(false);
   const [tagOnReader, setTagOnReader] = useState(false);
   const [tagUid, setTagUid] = useState<string | null>(null);
-  const [diagnosticOpen, setDiagnosticOpen] = useState<'scale' | 'nfc' | null>(null);
+
 
   const { data: spools = [], refetch: refetchSpools } = useQuery({
     queryKey: ['inventory-spools'],
@@ -216,24 +215,8 @@ export function SpoolBuddyWriteTagPage() {
 
   const canWrite = selectedSpool && deviceOnline && writeStatus !== 'writing' && writeStatus !== 'success';
 
-  const handleOpenNfcDiagnostics = useCallback(() => {
-    setDiagnosticOpen('nfc');
-  }, []);
-
-  const handleOpenScaleDiagnostics = useCallback(() => {
-    setDiagnosticOpen('scale');
-  }, []);
-
   return (
     <div className="flex flex-col h-full">
-      {diagnosticOpen && (
-        <DiagnosticModal
-          type={diagnosticOpen}
-          onClose={() => setDiagnosticOpen(null)}
-          deviceId={device?.device_id || ''}
-        />
-      )}
-
       {/* Tab bar */}
       <div className="flex border-b border-bambu-dark-tertiary shrink-0">
         {([
@@ -324,8 +307,6 @@ export function SpoolBuddyWriteTagPage() {
             onUntag={handleUntagSpool}
             onCancel={handleCancelWrite}
             onRetry={() => { setWriteStatus('idle'); setWriteMessage(''); }}
-            onOpenNfcDiagnostics={handleOpenNfcDiagnostics}
-            onOpenScaleDiagnostics={handleOpenScaleDiagnostics}
             t={t}
           />
         </div>
@@ -918,7 +899,7 @@ function NewSpoolTouchForm({ currencySymbol, onCreated, selectedSpool, t }: {
 }
 
 // --- NFC status panel ---
-function NfcStatusPanel({ writeStatus, writeMessage, selectedSpool, tagOnReader, tagUid, deviceOnline, canWrite, isReplace, canUntag, untagging, onWrite, onUntag, onCancel, onRetry, onOpenNfcDiagnostics, onOpenScaleDiagnostics, t }: {
+function NfcStatusPanel({ writeStatus, writeMessage, selectedSpool, tagOnReader, tagUid, deviceOnline, canWrite, isReplace, canUntag, untagging, onWrite, onUntag, onCancel, onRetry, t }: {
   writeStatus: WriteStatus;
   writeMessage: string;
   selectedSpool: InventorySpool | null;
@@ -933,8 +914,6 @@ function NfcStatusPanel({ writeStatus, writeMessage, selectedSpool, tagOnReader,
   onUntag: () => void;
   onCancel: () => void;
   onRetry: () => void;
-  onOpenNfcDiagnostics: () => void;
-  onOpenScaleDiagnostics: () => void;
   t: (key: string, fallback: string) => string;
 }) {
   // Success state
@@ -1097,21 +1076,6 @@ function NfcStatusPanel({ writeStatus, writeMessage, selectedSpool, tagOnReader,
         </button>
       )}
 
-      {/* Diagnostic buttons */}
-      <div className="w-full flex gap-2 pt-2">
-        <button
-          onClick={onOpenNfcDiagnostics}
-          className="flex-1 py-2 px-2 bg-bambu-dark-tertiary hover:bg-bambu-dark-secondary text-zinc-300 text-xs rounded transition-colors"
-        >
-          {t('spoolbuddy.writeTag.nfcDiagnostics', 'NFC Diag')}
-        </button>
-        <button
-          onClick={onOpenScaleDiagnostics}
-          className="flex-1 py-2 px-2 bg-bambu-dark-tertiary hover:bg-bambu-dark-secondary text-zinc-300 text-xs rounded transition-colors"
-        >
-          {t('spoolbuddy.writeTag.scaleDiagnostics', 'Scale Diag')}
-        </button>
-      </div>
     </div>
   );
 }