fix: run linter

electron/preload.ts

@@ -1,19 +1,19 @@
-import { contextBridge, ipcRenderer } from 'electron';
+import { contextBridge, ipcRenderer } from "electron";
 
 // Expose protected methods that allow the renderer process to use
 // ipcRenderer without exposing the entire object
-contextBridge.exposeInMainWorld('electronAPI', {
+contextBridge.exposeInMainWorld("electronAPI", {
   invoke: (channel: string, ...args: unknown[]) => {
     const validChannels = [
-      'storage:savePattern',
-      'storage:getPattern',
-      'storage:getLatest',
-      'storage:deletePattern',
-      'storage:clear',
-      'dialog:openFile',
-      'dialog:saveFile',
-      'fs:readFile',
-      'fs:writeFile',
+      "storage:savePattern",
+      "storage:getPattern",
+      "storage:getLatest",
+      "storage:deletePattern",
+      "storage:clear",
+      "dialog:openFile",
+      "dialog:saveFile",
+      "fs:readFile",
+      "fs:writeFile",
     ];
 
     if (validChannels.includes(channel)) {
@@ -23,15 +23,21 @@ contextBridge.exposeInMainWorld('electronAPI', {
     throw new Error(`Invalid IPC channel: ${channel}`);
   },
   // Bluetooth device selection
-  onBluetoothDeviceList: (callback: (devices: Array<{ deviceId: string; deviceName: string }>) => void) => {
-    ipcRenderer.on('bluetooth:device-list', (_event, devices) => callback(devices));
+  onBluetoothDeviceList: (
+    callback: (
+      devices: Array<{ deviceId: string; deviceName: string }>,
+    ) => void,
+  ) => {
+    ipcRenderer.on("bluetooth:device-list", (_event, devices) =>
+      callback(devices),
+    );
   },
   selectBluetoothDevice: (deviceId: string) => {
-    ipcRenderer.send('bluetooth:select-device', deviceId);
+    ipcRenderer.send("bluetooth:select-device", deviceId);
   },
 });
 
 // Also expose process type for platform detection
-contextBridge.exposeInMainWorld('process', {
-  type: 'renderer',
+contextBridge.exposeInMainWorld("process", {
+  type: "renderer",
 });

src/App.tsx

@@ -1,14 +1,14 @@
-import { useEffect } from 'react';
-import { useShallow } from 'zustand/react/shallow';
-import { useMachineStore } from './stores/useMachineStore';
-import { usePatternStore } from './stores/usePatternStore';
-import { useUIStore } from './stores/useUIStore';
-import { AppHeader } from './components/AppHeader';
-import { LeftSidebar } from './components/LeftSidebar';
-import { PatternCanvas } from './components/PatternCanvas';
-import { PatternPreviewPlaceholder } from './components/PatternPreviewPlaceholder';
-import { BluetoothDevicePicker } from './components/BluetoothDevicePicker';
-import './App.css';
+import { useEffect } from "react";
+import { useShallow } from "zustand/react/shallow";
+import { useMachineStore } from "./stores/useMachineStore";
+import { usePatternStore } from "./stores/usePatternStore";
+import { useUIStore } from "./stores/useUIStore";
+import { AppHeader } from "./components/AppHeader";
+import { LeftSidebar } from "./components/LeftSidebar";
+import { PatternCanvas } from "./components/PatternCanvas";
+import { PatternPreviewPlaceholder } from "./components/PatternPreviewPlaceholder";
+import { BluetoothDevicePicker } from "./components/BluetoothDevicePicker";
+import "./App.css";
 
 function App() {
   // Set page title with version
@@ -17,36 +17,27 @@ function App() {
   }, []);
 
   // Machine store - for auto-loading cached pattern
-  const {
-    resumedPattern,
-    resumeFileName,
-  } = useMachineStore(
+  const { resumedPattern, resumeFileName } = useMachineStore(
     useShallow((state) => ({
       resumedPattern: state.resumedPattern,
       resumeFileName: state.resumeFileName,
-    }))
+    })),
   );
 
   // Pattern store - for auto-loading cached pattern
-  const {
-    pesData,
-    setPattern,
-    setPatternOffset,
-  } = usePatternStore(
+  const { pesData, setPattern, setPatternOffset } = usePatternStore(
     useShallow((state) => ({
       pesData: state.pesData,
       setPattern: state.setPattern,
       setPatternOffset: state.setPatternOffset,
-    }))
+    })),
   );
 
   // UI store - for Pyodide initialization
-  const {
-    initializePyodide,
-  } = useUIStore(
+  const { initializePyodide } = useUIStore(
     useShallow((state) => ({
       initializePyodide: state.initializePyodide,
-    }))
+    })),
   );
 
   // Initialize Pyodide in background on mount (non-blocking thanks to worker)
@@ -57,11 +48,19 @@ function App() {
   // Auto-load cached pattern when available
   useEffect(() => {
     if (resumedPattern && !pesData) {
-      console.log('[App] Loading resumed pattern:', resumeFileName, 'Offset:', resumedPattern.patternOffset);
-      setPattern(resumedPattern.pesData, resumeFileName || '');
+      console.log(
+        "[App] Loading resumed pattern:",
+        resumeFileName,
+        "Offset:",
+        resumedPattern.patternOffset,
+      );
+      setPattern(resumedPattern.pesData, resumeFileName || "");
       // Restore the cached pattern offset
       if (resumedPattern.patternOffset) {
-        setPatternOffset(resumedPattern.patternOffset.x, resumedPattern.patternOffset.y);
+        setPatternOffset(
+          resumedPattern.patternOffset.x,
+          resumedPattern.patternOffset.y,
+        );
       }
     }
   }, [resumedPattern, resumeFileName, pesData, setPattern, setPatternOffset]);

src/components/AppHeader.tsx

@@ -1,10 +1,10 @@
-import { useRef, useEffect } from 'react';
-import { useShallow } from 'zustand/react/shallow';
-import { useMachineStore } from '../stores/useMachineStore';
-import { useUIStore } from '../stores/useUIStore';
-import { WorkflowStepper } from './WorkflowStepper';
-import { ErrorPopover } from './ErrorPopover';
-import { getStateVisualInfo } from '../utils/machineStateHelpers';
+import { useRef, useEffect } from "react";
+import { useShallow } from "zustand/react/shallow";
+import { useMachineStore } from "../stores/useMachineStore";
+import { useUIStore } from "../stores/useUIStore";
+import { WorkflowStepper } from "./WorkflowStepper";
+import { ErrorPopover } from "./ErrorPopover";
+import { getStateVisualInfo } from "../utils/machineStateHelpers";
 import {
   CheckCircleIcon,
   BoltIcon,
@@ -12,7 +12,7 @@ import {
   ExclamationTriangleIcon,
   ArrowPathIcon,
   XMarkIcon,
-} from '@heroicons/react/24/solid';
+} from "@heroicons/react/24/solid";
 
 export function AppHeader() {
   const {
@@ -36,19 +36,15 @@ export function AppHeader() {
       isPairingError: state.isPairingError,
       isCommunicating: state.isCommunicating,
       disconnect: state.disconnect,
-    }))
+    })),
   );
 
-  const {
-    pyodideError,
-    showErrorPopover,
-    setErrorPopover,
-  } = useUIStore(
+  const { pyodideError, showErrorPopover, setErrorPopover } = useUIStore(
     useShallow((state) => ({
       pyodideError: state.pyodideError,
       showErrorPopover: state.showErrorPopover,
       setErrorPopover: state.setErrorPopover,
-    }))
+    })),
   );
 
   const errorPopoverRef = useRef<HTMLDivElement>(null);
@@ -80,8 +76,9 @@ export function AppHeader() {
     };
 
     if (showErrorPopover) {
-      document.addEventListener('mousedown', handleClickOutside);
-      return () => document.removeEventListener('mousedown', handleClickOutside);
+      document.addEventListener("mousedown", handleClickOutside);
+      return () =>
+        document.removeEventListener("mousedown", handleClickOutside);
     }
   }, [showErrorPopover, setErrorPopover]);
 
@@ -90,33 +87,44 @@ export function AppHeader() {
       <div className="grid grid-cols-1 lg:grid-cols-[280px_1fr] gap-4 lg:gap-8 items-center">
         {/* Machine Connection Status - Responsive width column */}
         <div className="flex items-center gap-3 w-full lg:w-[280px]">
-          <div className="w-2.5 h-2.5 bg-success-400 rounded-full animate-pulse shadow-lg shadow-success-400/50" style={{ visibility: isConnected ? 'visible' : 'hidden' }}></div>
-          <div className="w-2.5 h-2.5 bg-gray-400 rounded-full -ml-2.5" style={{ visibility: !isConnected ? 'visible' : 'hidden' }}></div>
+          <div
+            className="w-2.5 h-2.5 bg-success-400 rounded-full animate-pulse shadow-lg shadow-success-400/50"
+            style={{ visibility: isConnected ? "visible" : "hidden" }}
+          ></div>
+          <div
+            className="w-2.5 h-2.5 bg-gray-400 rounded-full -ml-2.5"
+            style={{ visibility: !isConnected ? "visible" : "hidden" }}
+          ></div>
           <div className="flex-1 min-w-0">
             <div className="flex items-center gap-2">
-              <h1 className="text-lg lg:text-xl font-bold text-white leading-tight">Respira</h1>
+              <h1 className="text-lg lg:text-xl font-bold text-white leading-tight">
+                Respira
+              </h1>
               {isConnected && machineInfo?.serialNumber && (
                 <span
                   className="text-xs text-primary-200 cursor-help"
                   title={`Serial: ${machineInfo.serialNumber}${
                     machineInfo.macAddress
                       ? `\nMAC: ${machineInfo.macAddress}`
-                      : ''
+                      : ""
                   }${
                     machineInfo.totalCount !== undefined
                       ? `\nTotal stitches: ${machineInfo.totalCount.toLocaleString()}`
-                      : ''
+                      : ""
                   }${
                     machineInfo.serviceCount !== undefined
                       ? `\nStitches since service: ${machineInfo.serviceCount.toLocaleString()}`
-                      : ''
+                      : ""
                   }`}
                 >
                   • {machineInfo.serialNumber}
                 </span>
               )}
               {isPolling && (
-                <ArrowPathIcon className="w-3.5 h-3.5 text-primary-200 animate-spin" title="Auto-refreshing status" />
+                <ArrowPathIcon
+                  className="w-3.5 h-3.5 text-primary-200 animate-spin"
+                  title="Auto-refreshing status"
+                />
               )}
             </div>
             <div className="flex items-center gap-2 mt-1 min-h-[32px]">
@@ -146,9 +154,9 @@ export function AppHeader() {
                   ref={errorButtonRef}
                   onClick={() => setErrorPopover(!showErrorPopover)}
                   className={`inline-flex items-center gap-1.5 px-2.5 py-1.5 sm:py-1 rounded text-sm font-medium bg-danger-500/90 hover:bg-danger-600 text-white border border-danger-400 transition-all flex-shrink-0 ${
-                    (machineErrorMessage || pyodideError)
-                      ? 'cursor-pointer animate-pulse hover:animate-none'
-                      : 'invisible pointer-events-none'
+                    machineErrorMessage || pyodideError
+                      ? "cursor-pointer animate-pulse hover:animate-none"
+                      : "invisible pointer-events-none"
                   }`}
                   title="Click to view error details"
                   aria-label="View error details"
@@ -157,27 +165,30 @@ export function AppHeader() {
                   <ExclamationTriangleIcon className="w-3.5 h-3.5 flex-shrink-0" />
                   <span>
                     {(() => {
-                      if (pyodideError) return 'Python Error';
-                      if (isPairingError) return 'Pairing Required';
+                      if (pyodideError) return "Python Error";
+                      if (isPairingError) return "Pairing Required";
 
-                      const errorMsg = machineErrorMessage || '';
+                      const errorMsg = machineErrorMessage || "";
 
                       // Categorize by error message content
-                      if (errorMsg.toLowerCase().includes('bluetooth') || errorMsg.toLowerCase().includes('connection')) {
-                        return 'Connection Error';
+                      if (
+                        errorMsg.toLowerCase().includes("bluetooth") ||
+                        errorMsg.toLowerCase().includes("connection")
+                      ) {
+                        return "Connection Error";
                       }
-                      if (errorMsg.toLowerCase().includes('upload')) {
-                        return 'Upload Error';
+                      if (errorMsg.toLowerCase().includes("upload")) {
+                        return "Upload Error";
                       }
-                      if (errorMsg.toLowerCase().includes('pattern')) {
-                        return 'Pattern Error';
+                      if (errorMsg.toLowerCase().includes("pattern")) {
+                        return "Pattern Error";
                       }
                       if (machineError !== undefined) {
                         return `Machine Error`;
                       }
 
                       // Default fallback
-                      return 'Error';
+                      return "Error";
                     })()}
                   </span>
                 </button>

src/components/BluetoothDevicePicker.tsx

@@ -1,5 +1,5 @@
-import { useEffect, useState, useCallback } from 'react';
-import type { BluetoothDevice } from '../types/electron';
+import { useEffect, useState, useCallback } from "react";
+import type { BluetoothDevice } from "../types/electron";
 
 export function BluetoothDevicePicker() {
   const [devices, setDevices] = useState<BluetoothDevice[]>([]);
@@ -10,7 +10,7 @@ export function BluetoothDevicePicker() {
     // Only set up listener in Electron
     if (window.electronAPI?.onBluetoothDeviceList) {
       window.electronAPI.onBluetoothDeviceList((deviceList) => {
-        console.log('[BluetoothPicker] Received device list:', deviceList);
+        console.log("[BluetoothPicker] Received device list:", deviceList);
         setDevices(deviceList);
         // Open the picker when scan starts (even if empty at first)
         if (!isOpen) {
@@ -26,38 +26,44 @@ export function BluetoothDevicePicker() {
   }, [isOpen]);
 
   const handleSelectDevice = useCallback((deviceId: string) => {
-    console.log('[BluetoothPicker] User selected device:', deviceId);
+    console.log("[BluetoothPicker] User selected device:", deviceId);
     window.electronAPI?.selectBluetoothDevice(deviceId);
     setIsOpen(false);
     setDevices([]);
   }, []);
 
   const handleCancel = useCallback(() => {
-    console.log('[BluetoothPicker] User cancelled device selection');
-    window.electronAPI?.selectBluetoothDevice('');
+    console.log("[BluetoothPicker] User cancelled device selection");
+    window.electronAPI?.selectBluetoothDevice("");
     setIsOpen(false);
     setDevices([]);
     setIsScanning(false);
   }, []);
 
   // Handle escape key
-  const handleEscape = useCallback((e: KeyboardEvent) => {
-    if (e.key === 'Escape') {
+  const handleEscape = useCallback(
+    (e: KeyboardEvent) => {
+      if (e.key === "Escape") {
         handleCancel();
       }
-  }, [handleCancel]);
+    },
+    [handleCancel],
+  );
 
   useEffect(() => {
     if (isOpen) {
-      document.addEventListener('keydown', handleEscape);
-      return () => document.removeEventListener('keydown', handleEscape);
+      document.addEventListener("keydown", handleEscape);
+      return () => document.removeEventListener("keydown", handleEscape);
     }
   }, [isOpen, handleEscape]);
 
   if (!isOpen) return null;
 
   return (
-    <div className="fixed inset-0 bg-black/50 dark:bg-black/70 flex items-center justify-center z-[1000]" onClick={handleCancel}>
+    <div
+      className="fixed inset-0 bg-black/50 dark:bg-black/70 flex items-center justify-center z-[1000]"
+      onClick={handleCancel}
+    >
       <div
         className="bg-white dark:bg-gray-800 rounded-lg shadow-2xl max-w-lg w-[90%] m-4 border-t-4 border-primary-600 dark:border-primary-500"
         onClick={(e) => e.stopPropagation()}
@@ -66,23 +72,48 @@ export function BluetoothDevicePicker() {
         aria-describedby="bluetooth-picker-message"
       >
         <div className="p-6 border-b border-gray-300 dark:border-gray-600">
-          <h3 id="bluetooth-picker-title" className="m-0 text-base lg:text-lg font-semibold dark:text-white">
+          <h3
+            id="bluetooth-picker-title"
+            className="m-0 text-base lg:text-lg font-semibold dark:text-white"
+          >
             Select Bluetooth Device
           </h3>
         </div>
         <div className="p-6">
           {isScanning && devices.length === 0 ? (
             <div className="flex items-center gap-3 text-gray-700 dark:text-gray-300">
-              <svg className="animate-spin h-5 w-5 text-primary-600 dark:text-primary-400" xmlns="http://www.w3.org/2000/svg" fill="none" viewBox="0 0 24 24">
-                <circle className="opacity-25" cx="12" cy="12" r="10" stroke="currentColor" strokeWidth="4"></circle>
-                <path className="opacity-75" fill="currentColor" d="M4 12a8 8 0 018-8V0C5.373 0 0 5.373 0 12h4zm2 5.291A7.962 7.962 0 014 12H0c0 3.042 1.135 5.824 3 7.938l3-2.647z"></path>
+              <svg
+                className="animate-spin h-5 w-5 text-primary-600 dark:text-primary-400"
+                xmlns="http://www.w3.org/2000/svg"
+                fill="none"
+                viewBox="0 0 24 24"
+              >
+                <circle
+                  className="opacity-25"
+                  cx="12"
+                  cy="12"
+                  r="10"
+                  stroke="currentColor"
+                  strokeWidth="4"
+                ></circle>
+                <path
+                  className="opacity-75"
+                  fill="currentColor"
+                  d="M4 12a8 8 0 018-8V0C5.373 0 0 5.373 0 12h4zm2 5.291A7.962 7.962 0 014 12H0c0 3.042 1.135 5.824 3 7.938l3-2.647z"
+                ></path>
               </svg>
-              <span id="bluetooth-picker-message">Scanning for Bluetooth devices...</span>
+              <span id="bluetooth-picker-message">
+                Scanning for Bluetooth devices...
+              </span>
             </div>
           ) : (
             <>
-              <p id="bluetooth-picker-message" className="mb-4 leading-relaxed text-gray-900 dark:text-gray-100">
-                {devices.length} device{devices.length !== 1 ? 's' : ''} found. Select a device to connect:
+              <p
+                id="bluetooth-picker-message"
+                className="mb-4 leading-relaxed text-gray-900 dark:text-gray-100"
+              >
+                {devices.length} device{devices.length !== 1 ? "s" : ""} found.
+                Select a device to connect:
               </p>
               <div className="space-y-2">
                 {devices.map((device) => (
@@ -92,8 +123,12 @@ export function BluetoothDevicePicker() {
                     className="w-full px-4 py-3 bg-gray-100 dark:bg-gray-700 text-left rounded-lg font-medium text-sm hover:bg-primary-100 dark:hover:bg-primary-900 hover:text-primary-900 dark:hover:text-primary-100 active:bg-primary-200 dark:active:bg-primary-800 transition-all duration-150 cursor-pointer focus:outline-none focus:ring-2 focus:ring-primary-300 dark:focus:ring-primary-500 focus:ring-offset-2 dark:focus:ring-offset-gray-900"
                     aria-label={`Connect to ${device.deviceName}`}
                   >
-                    <div className="font-semibold text-gray-900 dark:text-white">{device.deviceName}</div>
-                    <div className="text-xs text-gray-600 dark:text-gray-400 mt-1">{device.deviceId}</div>
+                    <div className="font-semibold text-gray-900 dark:text-white">
+                      {device.deviceName}
+                    </div>
+                    <div className="text-xs text-gray-600 dark:text-gray-400 mt-1">
+                      {device.deviceId}
+                    </div>
                   </button>
                 ))}
               </div>

src/components/ConfirmDialog.tsx

@@ -1,4 +1,4 @@
-import { useEffect, useCallback } from 'react';
+import { useEffect, useCallback } from "react";
 
 interface ConfirmDialogProps {
   isOpen: boolean;
@@ -8,49 +8,65 @@ interface ConfirmDialogProps {
   cancelText?: string;
   onConfirm: () => void;
   onCancel: () => void;
-  variant?: 'danger' | 'warning';
+  variant?: "danger" | "warning";
 }
 
 export function ConfirmDialog({
   isOpen,
   title,
   message,
-  confirmText = 'Confirm',
-  cancelText = 'Cancel',
+  confirmText = "Confirm",
+  cancelText = "Cancel",
   onConfirm,
   onCancel,
-  variant = 'warning',
+  variant = "warning",
 }: ConfirmDialogProps) {
   // Handle escape key
-  const handleEscape = useCallback((e: KeyboardEvent) => {
-    if (e.key === 'Escape') {
+  const handleEscape = useCallback(
+    (e: KeyboardEvent) => {
+      if (e.key === "Escape") {
         onCancel();
       }
-  }, [onCancel]);
+    },
+    [onCancel],
+  );
 
   useEffect(() => {
     if (isOpen) {
-      document.addEventListener('keydown', handleEscape);
-      return () => document.removeEventListener('keydown', handleEscape);
+      document.addEventListener("keydown", handleEscape);
+      return () => document.removeEventListener("keydown", handleEscape);
     }
   }, [isOpen, handleEscape]);
 
   if (!isOpen) return null;
 
   return (
-    <div className="fixed inset-0 bg-black/50 dark:bg-black/70 flex items-center justify-center z-[1000]" onClick={onCancel}>
     <div
-        className={`bg-white dark:bg-gray-800 rounded-lg shadow-2xl max-w-lg w-[90%] m-4 ${variant === 'danger' ? 'border-t-4 border-danger-600 dark:border-danger-500' : 'border-t-4 border-warning-500 dark:border-warning-600'}`}
+      className="fixed inset-0 bg-black/50 dark:bg-black/70 flex items-center justify-center z-[1000]"
+      onClick={onCancel}
+    >
+      <div
+        className={`bg-white dark:bg-gray-800 rounded-lg shadow-2xl max-w-lg w-[90%] m-4 ${variant === "danger" ? "border-t-4 border-danger-600 dark:border-danger-500" : "border-t-4 border-warning-500 dark:border-warning-600"}`}
         onClick={(e) => e.stopPropagation()}
         role="dialog"
         aria-labelledby="dialog-title"
         aria-describedby="dialog-message"
       >
         <div className="p-6 border-b border-gray-300 dark:border-gray-600">
-          <h3 id="dialog-title" className="m-0 text-base lg:text-lg font-semibold dark:text-white">{title}</h3>
+          <h3
+            id="dialog-title"
+            className="m-0 text-base lg:text-lg font-semibold dark:text-white"
+          >
+            {title}
+          </h3>
         </div>
         <div className="p-6">
-          <p id="dialog-message" className="m-0 leading-relaxed text-gray-900 dark:text-gray-100">{message}</p>
+          <p
+            id="dialog-message"
+            className="m-0 leading-relaxed text-gray-900 dark:text-gray-100"
+          >
+            {message}
+          </p>
         </div>
         <div className="p-4 px-6 flex gap-3 justify-end border-t border-gray-300 dark:border-gray-600">
           <button
@@ -64,9 +80,9 @@ export function ConfirmDialog({
           <button
             onClick={onConfirm}
             className={
-              variant === 'danger'
-                ? 'px-6 py-2.5 bg-danger-600 dark:bg-danger-700 text-white rounded-lg font-semibold text-sm hover:bg-danger-700 dark:hover:bg-danger-600 active:bg-danger-800 dark:active:bg-danger-500 hover:shadow-lg active:scale-[0.98] transition-all duration-150 cursor-pointer focus:outline-none focus:ring-2 focus:ring-danger-300 dark:focus:ring-danger-500 focus:ring-offset-2 dark:focus:ring-offset-gray-900'
-                : 'px-6 py-2.5 bg-primary-600 dark:bg-primary-700 text-white rounded-lg font-semibold text-sm hover:bg-primary-700 dark:hover:bg-primary-600 active:bg-primary-800 dark:active:bg-primary-500 hover:shadow-lg active:scale-[0.98] transition-all duration-150 cursor-pointer focus:outline-none focus:ring-2 focus:ring-primary-300 dark:focus:ring-primary-500 focus:ring-offset-2 dark:focus:ring-offset-gray-900'
+              variant === "danger"
+                ? "px-6 py-2.5 bg-danger-600 dark:bg-danger-700 text-white rounded-lg font-semibold text-sm hover:bg-danger-700 dark:hover:bg-danger-600 active:bg-danger-800 dark:active:bg-danger-500 hover:shadow-lg active:scale-[0.98] transition-all duration-150 cursor-pointer focus:outline-none focus:ring-2 focus:ring-danger-300 dark:focus:ring-danger-500 focus:ring-offset-2 dark:focus:ring-offset-gray-900"
+                : "px-6 py-2.5 bg-primary-600 dark:bg-primary-700 text-white rounded-lg font-semibold text-sm hover:bg-primary-700 dark:hover:bg-primary-600 active:bg-primary-800 dark:active:bg-primary-500 hover:shadow-lg active:scale-[0.98] transition-all duration-150 cursor-pointer focus:outline-none focus:ring-2 focus:ring-primary-300 dark:focus:ring-primary-500 focus:ring-offset-2 dark:focus:ring-offset-gray-900"
             }
             aria-label={`Confirm: ${confirmText}`}
           >

src/components/ConnectionPrompt.tsx

@@ -1,13 +1,13 @@
-import { useShallow } from 'zustand/react/shallow';
-import { useMachineStore } from '../stores/useMachineStore';
-import { isBluetoothSupported } from '../utils/bluetoothSupport';
-import { ExclamationTriangleIcon } from '@heroicons/react/24/solid';
+import { useShallow } from "zustand/react/shallow";
+import { useMachineStore } from "../stores/useMachineStore";
+import { isBluetoothSupported } from "../utils/bluetoothSupport";
+import { ExclamationTriangleIcon } from "@heroicons/react/24/solid";
 
 export function ConnectionPrompt() {
   const { connect } = useMachineStore(
     useShallow((state) => ({
       connect: state.connect,
-    }))
+    })),
   );
 
   if (isBluetoothSupported()) {
@@ -15,13 +15,27 @@ export function ConnectionPrompt() {
       <div className="bg-white dark:bg-gray-800 p-4 rounded-lg shadow-md border-l-4 border-gray-400 dark:border-gray-600">
         <div className="flex items-start gap-3 mb-3">
           <div className="w-6 h-6 text-gray-600 dark:text-gray-400 flex-shrink-0 mt-0.5">
-            <svg className="w-6 h-6" fill="none" stroke="currentColor" viewBox="0 0 24 24">
-              <path strokeLinecap="round" strokeLinejoin="round" strokeWidth={2} d="M8.111 16.404a5.5 5.5 0 017.778 0M12 20h.01m-7.08-7.071c3.904-3.905 10.236-3.905 14.141 0M1.394 9.393c5.857-5.857 15.355-5.857 21.213 0" />
+            <svg
+              className="w-6 h-6"
+              fill="none"
+              stroke="currentColor"
+              viewBox="0 0 24 24"
+            >
+              <path
+                strokeLinecap="round"
+                strokeLinejoin="round"
+                strokeWidth={2}
+                d="M8.111 16.404a5.5 5.5 0 017.778 0M12 20h.01m-7.08-7.071c3.904-3.905 10.236-3.905 14.141 0M1.394 9.393c5.857-5.857 15.355-5.857 21.213 0"
+              />
             </svg>
           </div>
           <div className="flex-1 min-w-0">
-            <h3 className="text-sm font-semibold text-gray-900 dark:text-white mb-1">Get Started</h3>
-            <p className="text-xs text-gray-600 dark:text-gray-400">Connect to your embroidery machine</p>
+            <h3 className="text-sm font-semibold text-gray-900 dark:text-white mb-1">
+              Get Started
+            </h3>
+            <p className="text-xs text-gray-600 dark:text-gray-400">
+              Connect to your embroidery machine
+            </p>
           </div>
         </div>
         <button
@@ -39,16 +53,21 @@ export function ConnectionPrompt() {
       <div className="flex items-start gap-3">
         <ExclamationTriangleIcon className="w-6 h-6 text-warning-600 dark:text-warning-400 flex-shrink-0 mt-0.5" />
         <div className="flex-1 min-w-0">
-          <h3 className="text-base font-semibold text-warning-900 dark:text-warning-100 mb-2">Browser Not Supported</h3>
+          <h3 className="text-base font-semibold text-warning-900 dark:text-warning-100 mb-2">
+            Browser Not Supported
+          </h3>
           <p className="text-sm text-warning-800 dark:text-warning-200 mb-3">
-            Your browser doesn't support Web Bluetooth, which is required to connect to your embroidery machine.
+            Your browser doesn't support Web Bluetooth, which is required to
+            connect to your embroidery machine.
           </p>
           <div className="space-y-2">
-            <p className="text-sm font-semibold text-warning-900 dark:text-warning-100">Please try one of these options:</p>
+            <p className="text-sm font-semibold text-warning-900 dark:text-warning-100">
+              Please try one of these options:
+            </p>
             <ul className="text-sm text-warning-800 dark:text-warning-200 space-y-1.5 ml-4 list-disc">
               <li>Use a supported browser (Chrome, Edge, or Opera)</li>
               <li>
-                Download the Desktop app from{' '}
+                Download the Desktop app from{" "}
                 <a
                   href="https://github.com/jhbruhn/respira/releases/latest"
                   target="_blank"

src/components/ErrorPopover.tsx

@@ -1,6 +1,9 @@
-import { forwardRef } from 'react';
-import { ExclamationTriangleIcon, InformationCircleIcon } from '@heroicons/react/24/solid';
-import { getErrorDetails } from '../utils/errorCodeHelpers';
+import { forwardRef } from "react";
+import {
+  ExclamationTriangleIcon,
+  InformationCircleIcon,
+} from "@heroicons/react/24/solid";
+import { getErrorDetails } from "../utils/errorCodeHelpers";
 
 interface ErrorPopoverProps {
   machineError?: number;
@@ -13,31 +16,32 @@ export const ErrorPopover = forwardRef<HTMLDivElement, ErrorPopoverProps>(
   ({ machineError, isPairingError, errorMessage, pyodideError }, ref) => {
     const errorDetails = getErrorDetails(machineError);
     const isPairingErr = isPairingError;
-    const errorMsg = pyodideError || errorMessage || '';
+    const errorMsg = pyodideError || errorMessage || "";
     const isInfo = isPairingErr || errorDetails?.isInformational;
 
     const bgColor = isInfo
-      ? 'bg-info-50 dark:bg-info-900/95 border-info-600 dark:border-info-500'
-      : 'bg-danger-50 dark:bg-danger-900/95 border-danger-600 dark:border-danger-500';
+      ? "bg-info-50 dark:bg-info-900/95 border-info-600 dark:border-info-500"
+      : "bg-danger-50 dark:bg-danger-900/95 border-danger-600 dark:border-danger-500";
 
     const iconColor = isInfo
-      ? 'text-info-600 dark:text-info-400'
-      : 'text-danger-600 dark:text-danger-400';
+      ? "text-info-600 dark:text-info-400"
+      : "text-danger-600 dark:text-danger-400";
 
     const textColor = isInfo
-      ? 'text-info-900 dark:text-info-200'
-      : 'text-danger-900 dark:text-danger-200';
+      ? "text-info-900 dark:text-info-200"
+      : "text-danger-900 dark:text-danger-200";
 
     const descColor = isInfo
-      ? 'text-info-800 dark:text-info-300'
-      : 'text-danger-800 dark:text-danger-300';
+      ? "text-info-800 dark:text-info-300"
+      : "text-danger-800 dark:text-danger-300";
 
     const listColor = isInfo
-      ? 'text-info-700 dark:text-info-300'
-      : 'text-danger-700 dark:text-danger-300';
+      ? "text-info-700 dark:text-info-300"
+      : "text-danger-700 dark:text-danger-300";
 
     const Icon = isInfo ? InformationCircleIcon : ExclamationTriangleIcon;
-    const title = errorDetails?.title || (isPairingErr ? 'Pairing Required' : 'Error');
+    const title =
+      errorDetails?.title || (isPairingErr ? "Pairing Required" : "Error");
 
     return (
       <div
@@ -46,7 +50,9 @@ export const ErrorPopover = forwardRef<HTMLDivElement, ErrorPopoverProps>(
         role="dialog"
         aria-label="Error details"
       >
-        <div className={`${bgColor} border-l-4 p-4 rounded-lg shadow-xl backdrop-blur-sm`}>
+        <div
+          className={`${bgColor} border-l-4 p-4 rounded-lg shadow-xl backdrop-blur-sm`}
+        >
           <div className="flex items-start gap-3">
             <Icon className={`w-6 h-6 ${iconColor} flex-shrink-0 mt-0.5`} />
             <div className="flex-1">
@@ -59,18 +65,23 @@ export const ErrorPopover = forwardRef<HTMLDivElement, ErrorPopoverProps>(
               {errorDetails?.solutions && errorDetails.solutions.length > 0 && (
                 <>
                   <h4 className={`text-sm font-semibold ${textColor} mb-2`}>
-                    {isInfo ? 'Steps:' : 'How to Fix:'}
+                    {isInfo ? "Steps:" : "How to Fix:"}
                   </h4>
-                  <ol className={`list-decimal list-inside text-sm ${listColor} space-y-1.5`}>
+                  <ol
+                    className={`list-decimal list-inside text-sm ${listColor} space-y-1.5`}
+                  >
                     {errorDetails.solutions.map((solution, index) => (
-                      <li key={index} className="pl-2">{solution}</li>
+                      <li key={index} className="pl-2">
+                        {solution}
+                      </li>
                     ))}
                   </ol>
                 </>
               )}
               {machineError !== undefined && !errorDetails?.isInformational && (
                 <p className={`text-xs ${descColor} mt-3 font-mono`}>
-                  Error Code: 0x{machineError.toString(16).toUpperCase().padStart(2, '0')}
+                  Error Code: 0x
+                  {machineError.toString(16).toUpperCase().padStart(2, "0")}
                 </p>
               )}
             </div>
@@ -78,7 +89,7 @@ export const ErrorPopover = forwardRef<HTMLDivElement, ErrorPopoverProps>(
         </div>
       </div>
     );
-  }
+  },
 );
 
-ErrorPopover.displayName = 'ErrorPopover';
+ErrorPopover.displayName = "ErrorPopover";

src/components/FileUpload.tsx

@@ -1,15 +1,26 @@
-import { useState, useCallback } from 'react';
-import { useShallow } from 'zustand/react/shallow';
-import { useMachineStore, usePatternUploaded } from '../stores/useMachineStore';
-import { usePatternStore } from '../stores/usePatternStore';
-import { useUIStore } from '../stores/useUIStore';
-import { convertPesToPen, type PesPatternData } from '../formats/import/pesImporter';
-import { canUploadPattern, getMachineStateCategory } from '../utils/machineStateHelpers';
-import { PatternInfoSkeleton } from './SkeletonLoader';
-import { PatternInfo } from './PatternInfo';
-import { ArrowUpTrayIcon, CheckCircleIcon, DocumentTextIcon, FolderOpenIcon } from '@heroicons/react/24/solid';
-import { createFileService } from '../platform';
-import type { IFileService } from '../platform/interfaces/IFileService';
+import { useState, useCallback } from "react";
+import { useShallow } from "zustand/react/shallow";
+import { useMachineStore, usePatternUploaded } from "../stores/useMachineStore";
+import { usePatternStore } from "../stores/usePatternStore";
+import { useUIStore } from "../stores/useUIStore";
+import {
+  convertPesToPen,
+  type PesPatternData,
+} from "../formats/import/pesImporter";
+import {
+  canUploadPattern,
+  getMachineStateCategory,
+} from "../utils/machineStateHelpers";
+import { PatternInfoSkeleton } from "./SkeletonLoader";
+import { PatternInfo } from "./PatternInfo";
+import {
+  ArrowUpTrayIcon,
+  CheckCircleIcon,
+  DocumentTextIcon,
+  FolderOpenIcon,
+} from "@heroicons/react/24/solid";
+import { createFileService } from "../platform";
+import type { IFileService } from "../platform/interfaces/IFileService";
 
 export function FileUpload() {
   // Machine store
@@ -32,7 +43,7 @@ export function FileUpload() {
       resumeAvailable: state.resumeAvailable,
       resumeFileName: state.resumeFileName,
       uploadPattern: state.uploadPattern,
-    }))
+    })),
   );
 
   // Pattern store
@@ -47,7 +58,7 @@ export function FileUpload() {
       currentFileName: state.currentFileName,
       patternOffset: state.patternOffset,
       setPattern: state.setPattern,
-    }))
+    })),
   );
 
   // Derived state: pattern is uploaded if machine has pattern info
@@ -65,16 +76,16 @@ export function FileUpload() {
       pyodideProgress: state.pyodideProgress,
       pyodideLoadingStep: state.pyodideLoadingStep,
       initializePyodide: state.initializePyodide,
-    }))
+    })),
   );
   const [localPesData, setLocalPesData] = useState<PesPatternData | null>(null);
-  const [fileName, setFileName] = useState<string>('');
+  const [fileName, setFileName] = useState<string>("");
   const [fileService] = useState<IFileService>(() => createFileService());
 
   // Use prop pesData if available (from cached pattern), otherwise use local state
   const pesData = pesDataProp || localPesData;
   // Use currentFileName from App state, or local fileName, or resumeFileName for display
-  const displayFileName = currentFileName || fileName || resumeFileName || '';
+  const displayFileName = currentFileName || fileName || resumeFileName || "";
   const [isLoading, setIsLoading] = useState(false);
 
   const handleFileChange = useCallback(
@@ -83,16 +94,16 @@ export function FileUpload() {
       try {
         // Wait for Pyodide if it's still loading
         if (!pyodideReady) {
-          console.log('[FileUpload] Waiting for Pyodide to finish loading...');
+          console.log("[FileUpload] Waiting for Pyodide to finish loading...");
           await initializePyodide();
-          console.log('[FileUpload] Pyodide ready');
+          console.log("[FileUpload] Pyodide ready");
         }
 
         let file: File | null = null;
 
         // In Electron, use native file dialogs
         if (fileService.hasNativeDialogs()) {
-          file = await fileService.openFileDialog({ accept: '.pes' });
+          file = await fileService.openFileDialog({ accept: ".pes" });
         } else {
           // In browser, use the input element
           file = event?.target.files?.[0] || null;
@@ -110,14 +121,14 @@ export function FileUpload() {
       } catch (err) {
         alert(
           `Failed to load PES file: ${
-            err instanceof Error ? err.message : 'Unknown error'
-          }`
+            err instanceof Error ? err.message : "Unknown error"
+          }`,
         );
       } finally {
         setIsLoading(false);
       }
     },
-    [fileService, setPattern, pyodideReady, initializePyodide]
+    [fileService, setPattern, pyodideReady, initializePyodide],
   );
 
   const handleUpload = useCallback(() => {
@@ -155,14 +166,26 @@ export function FileUpload() {
 
     if (exceedsLeft || exceedsRight || exceedsTop || exceedsBottom) {
       const directions = [];
-      if (exceedsLeft) directions.push(`left by ${((hoopMinX - patternMinX) / 10).toFixed(1)}mm`);
-      if (exceedsRight) directions.push(`right by ${((patternMaxX - hoopMaxX) / 10).toFixed(1)}mm`);
-      if (exceedsTop) directions.push(`top by ${((hoopMinY - patternMinY) / 10).toFixed(1)}mm`);
-      if (exceedsBottom) directions.push(`bottom by ${((patternMaxY - hoopMaxY) / 10).toFixed(1)}mm`);
+      if (exceedsLeft)
+        directions.push(
+          `left by ${((hoopMinX - patternMinX) / 10).toFixed(1)}mm`,
+        );
+      if (exceedsRight)
+        directions.push(
+          `right by ${((patternMaxX - hoopMaxX) / 10).toFixed(1)}mm`,
+        );
+      if (exceedsTop)
+        directions.push(
+          `top by ${((hoopMinY - patternMinY) / 10).toFixed(1)}mm`,
+        );
+      if (exceedsBottom)
+        directions.push(
+          `bottom by ${((patternMaxY - hoopMaxY) / 10).toFixed(1)}mm`,
+        );
 
       return {
         fits: false,
-        error: `Pattern exceeds hoop bounds: ${directions.join(', ')}. Adjust pattern position in preview.`
+        error: `Pattern exceeds hoop bounds: ${directions.join(", ")}. Adjust pattern position in preview.`,
       };
     }
 
@@ -171,21 +194,36 @@ export function FileUpload() {
 
   const boundsCheck = checkPatternFitsInHoop();
 
-  const borderColor = pesData ? 'border-secondary-600 dark:border-secondary-500' : 'border-gray-400 dark:border-gray-600';
-  const iconColor = pesData ? 'text-secondary-600 dark:text-secondary-400' : 'text-gray-600 dark:text-gray-400';
+  const borderColor = pesData
+    ? "border-secondary-600 dark:border-secondary-500"
+    : "border-gray-400 dark:border-gray-600";
+  const iconColor = pesData
+    ? "text-secondary-600 dark:text-secondary-400"
+    : "text-gray-600 dark:text-gray-400";
 
   return (
-    <div className={`bg-white dark:bg-gray-800 p-4 rounded-lg shadow-md border-l-4 ${borderColor}`}>
+    <div
+      className={`bg-white dark:bg-gray-800 p-4 rounded-lg shadow-md border-l-4 ${borderColor}`}
+    >
       <div className="flex items-start gap-3 mb-3">
-        <DocumentTextIcon className={`w-6 h-6 ${iconColor} flex-shrink-0 mt-0.5`} />
+        <DocumentTextIcon
+          className={`w-6 h-6 ${iconColor} flex-shrink-0 mt-0.5`}
+        />
         <div className="flex-1 min-w-0">
-          <h3 className="text-sm font-semibold text-gray-900 dark:text-white mb-1">Pattern File</h3>
+          <h3 className="text-sm font-semibold text-gray-900 dark:text-white mb-1">
+            Pattern File
+          </h3>
           {pesData && displayFileName ? (
-            <p className="text-xs text-gray-600 dark:text-gray-400 truncate" title={displayFileName}>
+            <p
+              className="text-xs text-gray-600 dark:text-gray-400 truncate"
+              title={displayFileName}
+            >
               {displayFileName}
             </p>
           ) : (
-            <p className="text-xs text-gray-600 dark:text-gray-400">No pattern loaded</p>
+            <p className="text-xs text-gray-600 dark:text-gray-400">
+              No pattern loaded
+            </p>
           )}
         </div>
       </div>
@@ -217,18 +255,37 @@ export function FileUpload() {
         />
         <label
           htmlFor={fileService.hasNativeDialogs() ? undefined : "file-input"}
-          onClick={fileService.hasNativeDialogs() ? () => handleFileChange() : undefined}
+          onClick={
+            fileService.hasNativeDialogs()
+              ? () => handleFileChange()
+              : undefined
+          }
           className={`flex-[2] flex items-center justify-center gap-2 px-3 py-2.5 sm:py-2 rounded font-semibold text-sm transition-all ${
             isLoading || patternUploaded || isUploading
-              ? 'opacity-50 cursor-not-allowed bg-gray-400 dark:bg-gray-600 text-white'
-              : 'cursor-pointer bg-gray-600 dark:bg-gray-700 text-white hover:bg-gray-700 dark:hover:bg-gray-600'
+              ? "opacity-50 cursor-not-allowed bg-gray-400 dark:bg-gray-600 text-white"
+              : "cursor-pointer bg-gray-600 dark:bg-gray-700 text-white hover:bg-gray-700 dark:hover:bg-gray-600"
           }`}
         >
           {isLoading ? (
             <>
-              <svg className="w-3.5 h-3.5 animate-spin" fill="none" viewBox="0 0 24 24">
-                <circle className="opacity-25" cx="12" cy="12" r="10" stroke="currentColor" strokeWidth="4"></circle>
-                <path className="opacity-75" fill="currentColor" d="M4 12a8 8 0 018-8V0C5.373 0 0 5.373 0 12h4zm2 5.291A7.962 7.962 0 014 12H0c0 3.042 1.135 5.824 3 7.938l3-2.647z"></path>
+              <svg
+                className="w-3.5 h-3.5 animate-spin"
+                fill="none"
+                viewBox="0 0 24 24"
+              >
+                <circle
+                  className="opacity-25"
+                  cx="12"
+                  cy="12"
+                  r="10"
+                  stroke="currentColor"
+                  strokeWidth="4"
+                ></circle>
+                <path
+                  className="opacity-75"
+                  fill="currentColor"
+                  d="M4 12a8 8 0 018-8V0C5.373 0 0 5.373 0 12h4zm2 5.291A7.962 7.962 0 014 12H0c0 3.042 1.135 5.824 3 7.938l3-2.647z"
+                ></path>
               </svg>
               <span>Loading...</span>
             </>
@@ -245,20 +302,44 @@ export function FileUpload() {
           )}
         </label>
 
-        {pesData && canUploadPattern(machineStatus) && !patternUploaded && uploadProgress < 100 && (
+        {pesData &&
+          canUploadPattern(machineStatus) &&
+          !patternUploaded &&
+          uploadProgress < 100 && (
             <button
               onClick={handleUpload}
               disabled={!isConnected || isUploading || !boundsCheck.fits}
               className="flex-1 px-3 py-2.5 sm:py-2 bg-primary-600 dark:bg-primary-700 text-white rounded font-semibold text-sm hover:bg-primary-700 dark:hover:bg-primary-600 active:bg-primary-800 dark:active:bg-primary-500 transition-colors cursor-pointer disabled:opacity-50 disabled:cursor-not-allowed"
-            aria-label={isUploading ? `Uploading pattern: ${uploadProgress.toFixed(0)}% complete` : boundsCheck.error || 'Upload pattern to machine'}
+              aria-label={
+                isUploading
+                  ? `Uploading pattern: ${uploadProgress.toFixed(0)}% complete`
+                  : boundsCheck.error || "Upload pattern to machine"
+              }
             >
               {isUploading ? (
                 <>
-                <svg className="w-3.5 h-3.5 animate-spin inline mr-1" fill="none" viewBox="0 0 24 24">
-                  <circle className="opacity-25" cx="12" cy="12" r="10" stroke="currentColor" strokeWidth="4"></circle>
-                  <path className="opacity-75" fill="currentColor" d="M4 12a8 8 0 018-8V0C5.373 0 0 5.373 0 12h4zm2 5.291A7.962 7.962 0 014 12H0c0 3.042 1.135 5.824 3 7.938l3-2.647z"></path>
+                  <svg
+                    className="w-3.5 h-3.5 animate-spin inline mr-1"
+                    fill="none"
+                    viewBox="0 0 24 24"
+                  >
+                    <circle
+                      className="opacity-25"
+                      cx="12"
+                      cy="12"
+                      r="10"
+                      stroke="currentColor"
+                      strokeWidth="4"
+                    ></circle>
+                    <path
+                      className="opacity-75"
+                      fill="currentColor"
+                      d="M4 12a8 8 0 018-8V0C5.373 0 0 5.373 0 12h4zm2 5.291A7.962 7.962 0 014 12H0c0 3.042 1.135 5.824 3 7.938l3-2.647z"
+                    ></path>
                   </svg>
-                {uploadProgress > 0 ? uploadProgress.toFixed(0) + '%' : 'Uploading'}
+                  {uploadProgress > 0
+                    ? uploadProgress.toFixed(0) + "%"
+                    : "Uploading"}
                 </>
               ) : (
                 <>
@@ -276,8 +357,8 @@ export function FileUpload() {
           <div className="flex justify-between items-center mb-1.5">
             <span className="text-xs font-medium text-gray-600 dark:text-gray-400">
               {isLoading && !pyodideReady
-                ? 'Please wait - initializing Python environment...'
-                : pyodideLoadingStep || 'Initializing Python environment...'}
+                ? "Please wait - initializing Python environment..."
+                : pyodideLoadingStep || "Initializing Python environment..."}
             </span>
             <span className="text-xs font-bold text-primary-600 dark:text-primary-400">
               {pyodideProgress.toFixed(0)}%
@@ -291,17 +372,26 @@ export function FileUpload() {
           </div>
           <p className="text-xs text-gray-500 dark:text-gray-400 mt-1.5 italic">
             {isLoading && !pyodideReady
-              ? 'File dialog will open automatically when ready'
-              : 'This only happens once on first use'}
+              ? "File dialog will open automatically when ready"
+              : "This only happens once on first use"}
           </p>
         </div>
       )}
 
       {/* Error/warning messages with smooth transition - placed after buttons */}
-      <div className="transition-all duration-200 ease-in-out overflow-hidden" style={{
-        maxHeight: (pesData && (boundsCheck.error || !canUploadPattern(machineStatus))) ? '200px' : '0px',
-        marginTop: (pesData && (boundsCheck.error || !canUploadPattern(machineStatus))) ? '12px' : '0px'
-      }}>
+      <div
+        className="transition-all duration-200 ease-in-out overflow-hidden"
+        style={{
+          maxHeight:
+            pesData && (boundsCheck.error || !canUploadPattern(machineStatus))
+              ? "200px"
+              : "0px",
+          marginTop:
+            pesData && (boundsCheck.error || !canUploadPattern(machineStatus))
+              ? "12px"
+              : "0px",
+        }}
+      >
         {pesData && !canUploadPattern(machineStatus) && (
           <div className="bg-warning-100 dark:bg-warning-900/20 text-warning-800 dark:text-warning-200 px-3 py-2 rounded border border-warning-200 dark:border-warning-800 text-sm">
             Cannot upload while {getMachineStateCategory(machineStatus)}
@@ -318,9 +408,13 @@ export function FileUpload() {
       {isUploading && uploadProgress < 100 && (
         <div className="mt-3">
           <div className="flex justify-between items-center mb-1.5">
-            <span className="text-xs font-medium text-gray-600 dark:text-gray-400">Uploading</span>
+            <span className="text-xs font-medium text-gray-600 dark:text-gray-400">
+              Uploading
+            </span>
             <span className="text-xs font-bold text-secondary-600 dark:text-secondary-400">
-              {uploadProgress > 0 ? uploadProgress.toFixed(1) + '%' : 'Starting...'}
+              {uploadProgress > 0
+                ? uploadProgress.toFixed(1) + "%"
+                : "Starting..."}
             </span>
           </div>
           <div className="h-2.5 bg-gray-300 dark:bg-gray-600 rounded-full overflow-hidden shadow-inner relative">

src/components/KonvaComponents.tsx

@@ -1,10 +1,10 @@
-import { memo, useMemo } from 'react';
-import { Group, Line, Rect, Text, Circle } from 'react-konva';
-import type { PesPatternData } from '../formats/import/pesImporter';
-import { getThreadColor } from '../formats/import/pesImporter';
-import type { MachineInfo } from '../types/machine';
-import { MOVE } from '../formats/import/constants';
-import { canvasColors } from '../utils/cssVariables';
+import { memo, useMemo } from "react";
+import { Group, Line, Rect, Text, Circle } from "react-konva";
+import type { PesPatternData } from "../formats/import/pesImporter";
+import { getThreadColor } from "../formats/import/pesImporter";
+import type { MachineInfo } from "../types/machine";
+import { MOVE } from "../formats/import/constants";
+import { canvasColors } from "../utils/cssVariables";
 
 interface GridProps {
   gridSize: number;
@@ -23,12 +23,20 @@ export const Grid = memo(({ gridSize, bounds, machineInfo }: GridProps) => {
     const horizontalLines: number[][] = [];
 
     // Vertical lines
-    for (let x = Math.floor(gridMinX / gridSize) * gridSize; x <= gridMaxX; x += gridSize) {
+    for (
+      let x = Math.floor(gridMinX / gridSize) * gridSize;
+      x <= gridMaxX;
+      x += gridSize
+    ) {
       verticalLines.push([x, gridMinY, x, gridMaxY]);
     }
 
     // Horizontal lines
-    for (let y = Math.floor(gridMinY / gridSize) * gridSize; y <= gridMaxY; y += gridSize) {
+    for (
+      let y = Math.floor(gridMinY / gridSize) * gridSize;
+      y <= gridMaxY;
+      y += gridSize
+    ) {
       horizontalLines.push([gridMinX, y, gridMaxX, y]);
     }
 
@@ -59,7 +67,7 @@ export const Grid = memo(({ gridSize, bounds, machineInfo }: GridProps) => {
   );
 });
 
-Grid.displayName = 'Grid';
+Grid.displayName = "Grid";
 
 export const Origin = memo(() => {
   const originColor = canvasColors.origin();
@@ -72,7 +80,7 @@ export const Origin = memo(() => {
   );
 });
 
-Origin.displayName = 'Origin';
+Origin.displayName = "Origin";
 
 interface HoopProps {
   machineInfo: MachineInfo;
@@ -108,7 +116,7 @@ export const Hoop = memo(({ machineInfo }: HoopProps) => {
   );
 });
 
-Hoop.displayName = 'Hoop';
+Hoop.displayName = "Hoop";
 
 interface PatternBoundsProps {
   bounds: { minX: number; maxX: number; minY: number; maxY: number };
@@ -133,7 +141,7 @@ export const PatternBounds = memo(({ bounds }: PatternBoundsProps) => {
   );
 });
 
-PatternBounds.displayName = 'PatternBounds';
+PatternBounds.displayName = "PatternBounds";
 
 interface StitchesProps {
   stitches: number[][];
@@ -142,7 +150,13 @@ interface StitchesProps {
   showProgress?: boolean;
 }
 
-export const Stitches = memo(({ stitches, pesData, currentStitchIndex, showProgress = false }: StitchesProps) => {
+export const Stitches = memo(
+  ({
+    stitches,
+    pesData,
+    currentStitchIndex,
+    showProgress = false,
+  }: StitchesProps) => {
     const stitchGroups = useMemo(() => {
       interface StitchGroup {
         color: string;
@@ -211,21 +225,31 @@ export const Stitches = memo(({ stitches, pesData, currentStitchIndex, showProgr
             lineCap="round"
             lineJoin="round"
             dash={group.isJump ? [8, 4] : undefined}
-          opacity={group.isJump ? (group.completed ? 0.8 : 0.5) : (showProgress && !group.completed ? 0.3 : 1.0)}
+            opacity={
+              group.isJump
+                ? group.completed
+                  ? 0.8
+                  : 0.5
+                : showProgress && !group.completed
+                  ? 0.3
+                  : 1.0
+            }
           />
         ))}
       </Group>
     );
-});
+  },
+);
 
-Stitches.displayName = 'Stitches';
+Stitches.displayName = "Stitches";
 
 interface CurrentPositionProps {
   currentStitchIndex: number;
   stitches: number[][];
 }
 
-export const CurrentPosition = memo(({ currentStitchIndex, stitches }: CurrentPositionProps) => {
+export const CurrentPosition = memo(
+  ({ currentStitchIndex, stitches }: CurrentPositionProps) => {
     if (currentStitchIndex <= 0 || currentStitchIndex >= stitches.length) {
       return null;
     }
@@ -243,12 +267,29 @@ export const CurrentPosition = memo(({ currentStitchIndex, stitches }: CurrentPo
           stroke={positionColor}
           strokeWidth={3}
         />
-      <Line points={[x - 12, y, x - 3, y]} stroke={positionColor} strokeWidth={2} />
-      <Line points={[x + 12, y, x + 3, y]} stroke={positionColor} strokeWidth={2} />
-      <Line points={[x, y - 12, x, y - 3]} stroke={positionColor} strokeWidth={2} />
-      <Line points={[x, y + 12, x, y + 3]} stroke={positionColor} strokeWidth={2} />
+        <Line
+          points={[x - 12, y, x - 3, y]}
+          stroke={positionColor}
+          strokeWidth={2}
+        />
+        <Line
+          points={[x + 12, y, x + 3, y]}
+          stroke={positionColor}
+          strokeWidth={2}
+        />
+        <Line
+          points={[x, y - 12, x, y - 3]}
+          stroke={positionColor}
+          strokeWidth={2}
+        />
+        <Line
+          points={[x, y + 12, x, y + 3]}
+          stroke={positionColor}
+          strokeWidth={2}
+        />
       </Group>
     );
-});
+  },
+);
 
-CurrentPosition.displayName = 'CurrentPosition';
+CurrentPosition.displayName = "CurrentPosition";

src/components/LeftSidebar.tsx

@@ -1,22 +1,22 @@
-import { useShallow } from 'zustand/react/shallow';
-import { useMachineStore, usePatternUploaded } from '../stores/useMachineStore';
-import { usePatternStore } from '../stores/usePatternStore';
-import { ConnectionPrompt } from './ConnectionPrompt';
-import { FileUpload } from './FileUpload';
-import { PatternSummaryCard } from './PatternSummaryCard';
-import { ProgressMonitor } from './ProgressMonitor';
+import { useShallow } from "zustand/react/shallow";
+import { useMachineStore, usePatternUploaded } from "../stores/useMachineStore";
+import { usePatternStore } from "../stores/usePatternStore";
+import { ConnectionPrompt } from "./ConnectionPrompt";
+import { FileUpload } from "./FileUpload";
+import { PatternSummaryCard } from "./PatternSummaryCard";
+import { ProgressMonitor } from "./ProgressMonitor";
 
 export function LeftSidebar() {
   const { isConnected } = useMachineStore(
     useShallow((state) => ({
       isConnected: state.isConnected,
-    }))
+    })),
   );
 
   const { pesData } = usePatternStore(
     useShallow((state) => ({
       pesData: state.pesData,
-    }))
+    })),
   );
 
   // Derived state: pattern is uploaded if machine has pattern info

src/components/MachineConnection.tsx

@@ -1,4 +1,4 @@
-import { useState } from 'react';
+import { useState } from "react";
 import {
   InformationCircleIcon,
   CheckCircleIcon,
@@ -6,12 +6,15 @@ import {
   PauseCircleIcon,
   ExclamationTriangleIcon,
   WifiIcon,
-} from '@heroicons/react/24/solid';
-import type { MachineInfo } from '../types/machine';
-import { MachineStatus } from '../types/machine';
-import { ConfirmDialog } from './ConfirmDialog';
-import { shouldConfirmDisconnect, getStateVisualInfo } from '../utils/machineStateHelpers';
-import { hasError, getErrorDetails } from '../utils/errorCodeHelpers';
+} from "@heroicons/react/24/solid";
+import type { MachineInfo } from "../types/machine";
+import { MachineStatus } from "../types/machine";
+import { ConfirmDialog } from "./ConfirmDialog";
+import {
+  shouldConfirmDisconnect,
+  getStateVisualInfo,
+} from "../utils/machineStateHelpers";
+import { hasError, getErrorDetails } from "../utils/errorCodeHelpers";
 
 interface MachineConnectionProps {
   isConnected: boolean;
@@ -61,20 +64,31 @@ export function MachineConnection({
   };
 
   const statusBadgeColors = {
-    idle: 'bg-info-100 dark:bg-info-900/30 text-info-800 dark:text-info-300',
-    info: 'bg-info-100 dark:bg-info-900/30 text-info-800 dark:text-info-300',
-    active: 'bg-warning-100 dark:bg-warning-900/30 text-warning-800 dark:text-warning-300',
-    waiting: 'bg-warning-100 dark:bg-warning-900/30 text-warning-800 dark:text-warning-300',
-    warning: 'bg-warning-100 dark:bg-warning-900/30 text-warning-800 dark:text-warning-300',
-    complete: 'bg-success-100 dark:bg-success-900/30 text-success-800 dark:text-success-300',
-    success: 'bg-success-100 dark:bg-success-900/30 text-success-800 dark:text-success-300',
-    interrupted: 'bg-danger-100 dark:bg-danger-900/30 text-danger-800 dark:text-danger-300',
-    error: 'bg-danger-100 dark:bg-danger-900/30 text-danger-800 dark:text-danger-300',
-    danger: 'bg-danger-100 dark:bg-danger-900/30 text-danger-800 dark:text-danger-300',
+    idle: "bg-info-100 dark:bg-info-900/30 text-info-800 dark:text-info-300",
+    info: "bg-info-100 dark:bg-info-900/30 text-info-800 dark:text-info-300",
+    active:
+      "bg-warning-100 dark:bg-warning-900/30 text-warning-800 dark:text-warning-300",
+    waiting:
+      "bg-warning-100 dark:bg-warning-900/30 text-warning-800 dark:text-warning-300",
+    warning:
+      "bg-warning-100 dark:bg-warning-900/30 text-warning-800 dark:text-warning-300",
+    complete:
+      "bg-success-100 dark:bg-success-900/30 text-success-800 dark:text-success-300",
+    success:
+      "bg-success-100 dark:bg-success-900/30 text-success-800 dark:text-success-300",
+    interrupted:
+      "bg-danger-100 dark:bg-danger-900/30 text-danger-800 dark:text-danger-300",
+    error:
+      "bg-danger-100 dark:bg-danger-900/30 text-danger-800 dark:text-danger-300",
+    danger:
+      "bg-danger-100 dark:bg-danger-900/30 text-danger-800 dark:text-danger-300",
   };
 
   // Only show error info when connected AND there's an actual error
-  const errorInfo = (isConnected && hasError(machineError)) ? getErrorDetails(machineError) : null;
+  const errorInfo =
+    isConnected && hasError(machineError)
+      ? getErrorDetails(machineError)
+      : null;
 
   return (
     <>
@@ -83,8 +97,12 @@ export function MachineConnection({
           <div className="flex items-start gap-3 mb-3">
             <WifiIcon className="w-6 h-6 text-gray-600 dark:text-gray-400 flex-shrink-0 mt-0.5" />
             <div className="flex-1 min-w-0">
-              <h3 className="text-sm font-semibold text-gray-900 dark:text-white mb-1">Machine</h3>
-              <p className="text-xs text-gray-600 dark:text-gray-400">Ready to connect</p>
+              <h3 className="text-sm font-semibold text-gray-900 dark:text-white mb-1">
+                Machine
+              </h3>
+              <p className="text-xs text-gray-600 dark:text-gray-400">
+                Ready to connect
+              </p>
             </div>
           </div>
 
@@ -100,43 +118,55 @@ export function MachineConnection({
           <div className="flex items-start gap-3 mb-3">
             <WifiIcon className="w-6 h-6 text-success-600 dark:text-success-400 flex-shrink-0 mt-0.5" />
             <div className="flex-1 min-w-0">
-              <h3 className="text-sm font-semibold text-gray-900 dark:text-white mb-1">Machine Info</h3>
+              <h3 className="text-sm font-semibold text-gray-900 dark:text-white mb-1">
+                Machine Info
+              </h3>
               <p className="text-xs text-gray-600 dark:text-gray-400">
-                {machineInfo?.modelNumber || 'Brother Embroidery Machine'}
+                {machineInfo?.modelNumber || "Brother Embroidery Machine"}
               </p>
             </div>
           </div>
 
           {/* Error/Info Display */}
-          {errorInfo && (
-            errorInfo.isInformational ? (
+          {errorInfo &&
+            (errorInfo.isInformational ? (
               <div className="mb-3 p-3 bg-info-50 dark:bg-info-900/20 border border-info-200 dark:border-info-800 rounded-lg">
                 <div className="flex items-start gap-2">
                   <InformationCircleIcon className="w-4 h-4 text-info-600 dark:text-info-400 flex-shrink-0" />
                   <div className="flex-1 min-w-0">
-                    <div className="font-semibold text-info-900 dark:text-info-200 text-xs">{errorInfo.title}</div>
+                    <div className="font-semibold text-info-900 dark:text-info-200 text-xs">
+                      {errorInfo.title}
+                    </div>
                   </div>
                 </div>
               </div>
             ) : (
               <div className="mb-3 p-3 bg-danger-50 dark:bg-danger-900/20 border border-danger-200 dark:border-danger-800 rounded-lg">
                 <div className="flex items-start gap-2">
-                  <span className="text-danger-600 dark:text-danger-400 flex-shrink-0">⚠️</span>
+                  <span className="text-danger-600 dark:text-danger-400 flex-shrink-0">
+                    ⚠️
+                  </span>
                   <div className="flex-1 min-w-0">
-                    <div className="font-semibold text-danger-900 dark:text-danger-200 text-xs mb-1">{errorInfo.title}</div>
+                    <div className="font-semibold text-danger-900 dark:text-danger-200 text-xs mb-1">
+                      {errorInfo.title}
+                    </div>
                     <div className="text-xs text-danger-700 dark:text-danger-300 font-mono">
-                      Error Code: 0x{machineError.toString(16).toUpperCase().padStart(2, '0')}
+                      Error Code: 0x
+                      {machineError.toString(16).toUpperCase().padStart(2, "0")}
                     </div>
                   </div>
                 </div>
               </div>
-            )
-          )}
+            ))}
 
           {/* Status Badge */}
           <div className="mb-3">
-            <span className="text-xs text-gray-600 dark:text-gray-400 block mb-1">Status:</span>
-            <span className={`inline-flex items-center gap-1.5 px-2.5 py-1 rounded-lg font-semibold text-xs ${statusBadgeColors[stateVisual.color as keyof typeof statusBadgeColors] || statusBadgeColors.info}`}>
+            <span className="text-xs text-gray-600 dark:text-gray-400 block mb-1">
+              Status:
+            </span>
+            <span
+              className={`inline-flex items-center gap-1.5 px-2.5 py-1 rounded-lg font-semibold text-xs ${statusBadgeColors[stateVisual.color as keyof typeof statusBadgeColors] || statusBadgeColors.info}`}
+            >
               {(() => {
                 const Icon = stateIcons[stateVisual.iconName];
                 return <Icon className="w-3.5 h-3.5" />;
@@ -149,14 +179,19 @@ export function MachineConnection({
           {machineInfo && (
             <div className="grid grid-cols-2 gap-2 text-xs mb-3">
               <div className="bg-gray-200 dark:bg-gray-700/50 p-2 rounded">
-                <span className="text-gray-600 dark:text-gray-400 block">Max Area</span>
+                <span className="text-gray-600 dark:text-gray-400 block">
+                  Max Area
+                </span>
                 <span className="font-semibold text-gray-900 dark:text-gray-100">
-                  {(machineInfo.maxWidth / 10).toFixed(1)} × {(machineInfo.maxHeight / 10).toFixed(1)} mm
+                  {(machineInfo.maxWidth / 10).toFixed(1)} ×{" "}
+                  {(machineInfo.maxHeight / 10).toFixed(1)} mm
                 </span>
               </div>
               {machineInfo.totalCount !== undefined && (
                 <div className="bg-gray-200 dark:bg-gray-700/50 p-2 rounded">
-                  <span className="text-gray-600 dark:text-gray-400 block">Total Stitches</span>
+                  <span className="text-gray-600 dark:text-gray-400 block">
+                    Total Stitches
+                  </span>
                   <span className="font-semibold text-gray-900 dark:text-gray-100">
                     {machineInfo.totalCount.toLocaleString()}
                   </span>

src/components/PatternCanvas.tsx

@@ -1,26 +1,36 @@
-import { useEffect, useRef, useState, useCallback } from 'react';
-import { useShallow } from 'zustand/react/shallow';
-import { useMachineStore, usePatternUploaded } from '../stores/useMachineStore';
-import { usePatternStore } from '../stores/usePatternStore';
-import { Stage, Layer, Group } from 'react-konva';
-import Konva from 'konva';
-import { PlusIcon, MinusIcon, ArrowPathIcon, LockClosedIcon, PhotoIcon, ArrowsPointingInIcon } from '@heroicons/react/24/solid';
-import type { PesPatternData } from '../formats/import/pesImporter';
-import { calculateInitialScale } from '../utils/konvaRenderers';
-import { Grid, Origin, Hoop, Stitches, PatternBounds, CurrentPosition } from './KonvaComponents';
+import { useEffect, useRef, useState, useCallback } from "react";
+import { useShallow } from "zustand/react/shallow";
+import { useMachineStore, usePatternUploaded } from "../stores/useMachineStore";
+import { usePatternStore } from "../stores/usePatternStore";
+import { Stage, Layer, Group } from "react-konva";
+import Konva from "konva";
+import {
+  PlusIcon,
+  MinusIcon,
+  ArrowPathIcon,
+  LockClosedIcon,
+  PhotoIcon,
+  ArrowsPointingInIcon,
+} from "@heroicons/react/24/solid";
+import type { PesPatternData } from "../formats/import/pesImporter";
+import { calculateInitialScale } from "../utils/konvaRenderers";
+import {
+  Grid,
+  Origin,
+  Hoop,
+  Stitches,
+  PatternBounds,
+  CurrentPosition,
+} from "./KonvaComponents";
 
 export function PatternCanvas() {
   // Machine store
-  const {
-    sewingProgress,
-    machineInfo,
-    isUploading,
-  } = useMachineStore(
+  const { sewingProgress, machineInfo, isUploading } = useMachineStore(
     useShallow((state) => ({
       sewingProgress: state.sewingProgress,
       machineInfo: state.machineInfo,
       isUploading: state.isUploading,
-    }))
+    })),
   );
 
   // Pattern store
@@ -33,7 +43,7 @@ export function PatternCanvas() {
       pesData: state.pesData,
       patternOffset: state.patternOffset,
       setPatternOffset: state.setPatternOffset,
-    }))
+    })),
   );
 
   // Derived state: pattern is uploaded if machine has pattern info
@@ -43,18 +53,24 @@ export function PatternCanvas() {
 
   const [stagePos, setStagePos] = useState({ x: 0, y: 0 });
   const [stageScale, setStageScale] = useState(1);
-  const [localPatternOffset, setLocalPatternOffset] = useState(initialPatternOffset || { x: 0, y: 0 });
+  const [localPatternOffset, setLocalPatternOffset] = useState(
+    initialPatternOffset || { x: 0, y: 0 },
+  );
   const [containerSize, setContainerSize] = useState({ width: 0, height: 0 });
   const initialScaleRef = useRef<number>(1);
   const prevPesDataRef = useRef<PesPatternData | null>(null);
 
   // Update pattern offset when initialPatternOffset changes
-  if (initialPatternOffset && (
-    localPatternOffset.x !== initialPatternOffset.x ||
-    localPatternOffset.y !== initialPatternOffset.y
-  )) {
+  if (
+    initialPatternOffset &&
+    (localPatternOffset.x !== initialPatternOffset.x ||
+      localPatternOffset.y !== initialPatternOffset.y)
+  ) {
     setLocalPatternOffset(initialPatternOffset);
-    console.log('[PatternCanvas] Restored pattern offset:', initialPatternOffset);
+    console.log(
+      "[PatternCanvas] Restored pattern offset:",
+      initialPatternOffset,
+    );
   }
 
   // Track container size
@@ -91,10 +107,19 @@ export function PatternCanvas() {
       prevPesDataRef.current = pesData;
 
       const { bounds } = pesData;
-      const viewWidth = machineInfo ? machineInfo.maxWidth : bounds.maxX - bounds.minX;
-      const viewHeight = machineInfo ? machineInfo.maxHeight : bounds.maxY - bounds.minY;
+      const viewWidth = machineInfo
+        ? machineInfo.maxWidth
+        : bounds.maxX - bounds.minX;
+      const viewHeight = machineInfo
+        ? machineInfo.maxHeight
+        : bounds.maxY - bounds.minY;
 
-      const initialScale = calculateInitialScale(containerSize.width, containerSize.height, viewWidth, viewHeight);
+      const initialScale = calculateInitialScale(
+        containerSize.width,
+        containerSize.height,
+        viewWidth,
+        viewHeight,
+      );
       initialScaleRef.current = initialScale;
 
       // Reset view when pattern changes
@@ -118,7 +143,10 @@ export function PatternCanvas() {
     const direction = e.evt.deltaY > 0 ? -1 : 1;
 
     setStageScale((oldScale) => {
-      const newScale = Math.max(0.1, Math.min(direction > 0 ? oldScale * scaleBy : oldScale / scaleBy, 2));
+      const newScale = Math.max(
+        0.1,
+        Math.min(direction > 0 ? oldScale * scaleBy : oldScale / scaleBy, 2),
+      );
 
       // Zoom towards pointer
       setStagePos((prevPos) => {
@@ -204,34 +232,51 @@ export function PatternCanvas() {
   }, [pesData, setPatternOffset]);
 
   // Pattern drag handlers
-  const handlePatternDragEnd = useCallback((e: Konva.KonvaEventObject<DragEvent>) => {
+  const handlePatternDragEnd = useCallback(
+    (e: Konva.KonvaEventObject<DragEvent>) => {
       const newOffset = {
         x: e.target.x(),
         y: e.target.y(),
       };
       setLocalPatternOffset(newOffset);
       setPatternOffset(newOffset.x, newOffset.y);
-  }, [setPatternOffset]);
+    },
+    [setPatternOffset],
+  );
 
-  const borderColor = pesData ? 'border-tertiary-600 dark:border-tertiary-500' : 'border-gray-400 dark:border-gray-600';
-  const iconColor = pesData ? 'text-tertiary-600 dark:text-tertiary-400' : 'text-gray-600 dark:text-gray-400';
+  const borderColor = pesData
+    ? "border-tertiary-600 dark:border-tertiary-500"
+    : "border-gray-400 dark:border-gray-600";
+  const iconColor = pesData
+    ? "text-tertiary-600 dark:text-tertiary-400"
+    : "text-gray-600 dark:text-gray-400";
 
   return (
-    <div className={`lg:h-full bg-white dark:bg-gray-800 p-4 rounded-lg shadow-md border-l-4 ${borderColor} flex flex-col`}>
+    <div
+      className={`lg:h-full bg-white dark:bg-gray-800 p-4 rounded-lg shadow-md border-l-4 ${borderColor} flex flex-col`}
+    >
       <div className="flex items-start gap-3 mb-3 flex-shrink-0">
         <PhotoIcon className={`w-6 h-6 ${iconColor} flex-shrink-0 mt-0.5`} />
         <div className="flex-1 min-w-0">
-          <h3 className="text-sm font-semibold text-gray-900 dark:text-white mb-1">Pattern Preview</h3>
+          <h3 className="text-sm font-semibold text-gray-900 dark:text-white mb-1">
+            Pattern Preview
+          </h3>
           {pesData ? (
             <p className="text-xs text-gray-600 dark:text-gray-400">
-              {((pesData.bounds.maxX - pesData.bounds.minX) / 10).toFixed(1)} × {((pesData.bounds.maxY - pesData.bounds.minY) / 10).toFixed(1)} mm
+              {((pesData.bounds.maxX - pesData.bounds.minX) / 10).toFixed(1)} ×{" "}
+              {((pesData.bounds.maxY - pesData.bounds.minY) / 10).toFixed(1)} mm
             </p>
           ) : (
-            <p className="text-xs text-gray-600 dark:text-gray-400">No pattern loaded</p>
+            <p className="text-xs text-gray-600 dark:text-gray-400">
+              No pattern loaded
+            </p>
           )}
         </div>
       </div>
-      <div className="relative w-full h-[400px] sm:h-[500px] lg:flex-1 lg:min-h-0 border border-gray-300 dark:border-gray-600 rounded bg-gray-200 dark:bg-gray-900 overflow-hidden" ref={containerRef}>
+      <div
+        className="relative w-full h-[400px] sm:h-[500px] lg:flex-1 lg:min-h-0 border border-gray-300 dark:border-gray-600 rounded bg-gray-200 dark:bg-gray-900 overflow-hidden"
+        ref={containerRef}
+      >
         {containerSize.width > 0 && (
           <Stage
             width={containerSize.width}
@@ -244,18 +289,18 @@ export function PatternCanvas() {
             onWheel={handleWheel}
             onDragStart={() => {
               if (stageRef.current) {
-              stageRef.current.container().style.cursor = 'grabbing';
+                stageRef.current.container().style.cursor = "grabbing";
               }
             }}
             onDragEnd={() => {
               if (stageRef.current) {
-              stageRef.current.container().style.cursor = 'grab';
+                stageRef.current.container().style.cursor = "grab";
               }
             }}
             ref={(node) => {
               stageRef.current = node;
               if (node) {
-              node.container().style.cursor = 'grab';
+                node.container().style.cursor = "grab";
               }
             }}
           >
@@ -285,22 +330,27 @@ export function PatternCanvas() {
                   onDragEnd={handlePatternDragEnd}
                   onMouseEnter={(e) => {
                     const stage = e.target.getStage();
-                  if (stage && !patternUploaded && !isUploading) stage.container().style.cursor = 'move';
+                    if (stage && !patternUploaded && !isUploading)
+                      stage.container().style.cursor = "move";
                   }}
                   onMouseLeave={(e) => {
                     const stage = e.target.getStage();
-                  if (stage && !patternUploaded && !isUploading) stage.container().style.cursor = 'grab';
+                    if (stage && !patternUploaded && !isUploading)
+                      stage.container().style.cursor = "grab";
                   }}
                 >
                   <Stitches
-                  stitches={pesData.penStitches.stitches.map((s, i): [number, number, number, number] => {
+                    stitches={pesData.penStitches.stitches.map(
+                      (s, i): [number, number, number, number] => {
                         // Convert PEN stitch format {x, y, flags, isJump} to PES format [x, y, cmd, colorIndex]
                         const cmd = s.isJump ? 0x10 : 0; // MOVE flag if jump
-                    const colorIndex = pesData.penStitches.colorBlocks.find(
-                      (b) => i >= b.startStitch && i <= b.endStitch
+                        const colorIndex =
+                          pesData.penStitches.colorBlocks.find(
+                            (b) => i >= b.startStitch && i <= b.endStitch,
                           )?.colorIndex ?? 0;
                         return [s.x, s.y, cmd, colorIndex];
-                  })}
+                      },
+                    )}
                     pesData={pesData}
                     currentStitchIndex={sewingProgress?.currentStitch || 0}
                     showProgress={patternUploaded || isUploading}
@@ -312,17 +362,23 @@ export function PatternCanvas() {
 
             {/* Current position layer */}
             <Layer>
-            {pesData && pesData.penStitches && sewingProgress && sewingProgress.currentStitch > 0 && (
+              {pesData &&
+                pesData.penStitches &&
+                sewingProgress &&
+                sewingProgress.currentStitch > 0 && (
                   <Group x={localPatternOffset.x} y={localPatternOffset.y}>
                     <CurrentPosition
                       currentStitchIndex={sewingProgress.currentStitch}
-                  stitches={pesData.penStitches.stitches.map((s, i): [number, number, number, number] => {
+                      stitches={pesData.penStitches.stitches.map(
+                        (s, i): [number, number, number, number] => {
                           const cmd = s.isJump ? 0x10 : 0;
-                    const colorIndex = pesData.penStitches.colorBlocks.find(
-                      (b) => i >= b.startStitch && i <= b.endStitch
+                          const colorIndex =
+                            pesData.penStitches.colorBlocks.find(
+                              (b) => i >= b.startStitch && i <= b.endStitch,
                             )?.colorIndex ?? 0;
                           return [s.x, s.y, cmd, colorIndex];
-                  })}
+                        },
+                      )}
                     />
                   </Group>
                 )}
@@ -342,22 +398,28 @@ export function PatternCanvas() {
           <>
             {/* Thread Legend Overlay */}
             <div className="absolute top-2 sm:top-2.5 left-2 sm:left-2.5 bg-white/95 dark:bg-gray-800/95 backdrop-blur-sm p-2 sm:p-2.5 rounded-lg shadow-lg z-10 max-w-[150px] sm:max-w-[180px] lg:max-w-[200px]">
-              <h4 className="m-0 mb-1.5 sm:mb-2 text-xs font-semibold text-gray-900 dark:text-gray-100 border-b border-gray-300 dark:border-gray-600 pb-1 sm:pb-1.5">Colors</h4>
+              <h4 className="m-0 mb-1.5 sm:mb-2 text-xs font-semibold text-gray-900 dark:text-gray-100 border-b border-gray-300 dark:border-gray-600 pb-1 sm:pb-1.5">
+                Colors
+              </h4>
               {pesData.uniqueColors.map((color, idx) => {
                 // Primary metadata: brand and catalog number
                 const primaryMetadata = [
                   color.brand,
-                  color.catalogNumber ? `#${color.catalogNumber}` : null
-                ].filter(Boolean).join(" ");
+                  color.catalogNumber ? `#${color.catalogNumber}` : null,
+                ]
+                  .filter(Boolean)
+                  .join(" ");
 
                 // Secondary metadata: chart and description
-                const secondaryMetadata = [
-                  color.chart,
-                  color.description
-                ].filter(Boolean).join(" ");
+                const secondaryMetadata = [color.chart, color.description]
+                  .filter(Boolean)
+                  .join(" ");
 
                 return (
-                  <div key={idx} className="flex items-start gap-1.5 sm:gap-2 mb-1 sm:mb-1.5 last:mb-0">
+                  <div
+                    key={idx}
+                    className="flex items-start gap-1.5 sm:gap-2 mb-1 sm:mb-1.5 last:mb-0"
+                  >
                     <div
                       className="w-3 h-3 sm:w-4 sm:h-4 rounded border border-black dark:border-gray-300 flex-shrink-0 mt-0.5"
                       style={{ backgroundColor: color.hex }}
@@ -369,7 +431,9 @@ export function PatternCanvas() {
                       {(primaryMetadata || secondaryMetadata) && (
                         <div className="text-xs text-gray-600 dark:text-gray-400 leading-tight mt-0.5 break-words">
                           {primaryMetadata}
-                          {primaryMetadata && secondaryMetadata && <span className="mx-1">•</span>}
+                          {primaryMetadata && secondaryMetadata && (
+                            <span className="mx-1">•</span>
+                          )}
                           {secondaryMetadata}
                         </div>
                       )}
@@ -380,11 +444,17 @@ export function PatternCanvas() {
             </div>
 
             {/* Pattern Offset Indicator */}
-            <div className={`absolute bottom-16 sm:bottom-20 right-2 sm:right-5 backdrop-blur-sm p-2 sm:p-2.5 px-2.5 sm:px-3.5 rounded-lg shadow-lg z-[11] min-w-[160px] sm:min-w-[180px] transition-colors ${
-              patternUploaded ? 'bg-amber-50/95 dark:bg-amber-900/80 border-2 border-amber-300 dark:border-amber-600' : 'bg-white/95 dark:bg-gray-800/95'
-            }`}>
+            <div
+              className={`absolute bottom-16 sm:bottom-20 right-2 sm:right-5 backdrop-blur-sm p-2 sm:p-2.5 px-2.5 sm:px-3.5 rounded-lg shadow-lg z-[11] min-w-[160px] sm:min-w-[180px] transition-colors ${
+                patternUploaded
+                  ? "bg-amber-50/95 dark:bg-amber-900/80 border-2 border-amber-300 dark:border-amber-600"
+                  : "bg-white/95 dark:bg-gray-800/95"
+              }`}
+            >
               <div className="flex items-center justify-between mb-1">
-                <div className="text-xs font-semibold text-gray-600 dark:text-gray-400 uppercase tracking-wider">Pattern Position:</div>
+                <div className="text-xs font-semibold text-gray-600 dark:text-gray-400 uppercase tracking-wider">
+                  Pattern Position:
+                </div>
                 {patternUploaded && (
                   <div className="flex items-center gap-1 text-amber-600 dark:text-amber-400">
                     <LockClosedIcon className="w-3 h-3 sm:w-3.5 sm:h-3.5" />
@@ -393,26 +463,48 @@ export function PatternCanvas() {
                 )}
               </div>
               <div className="text-sm font-semibold text-primary-600 dark:text-primary-400 mb-1">
-                X: {(localPatternOffset.x / 10).toFixed(1)}mm, Y: {(localPatternOffset.y / 10).toFixed(1)}mm
+                X: {(localPatternOffset.x / 10).toFixed(1)}mm, Y:{" "}
+                {(localPatternOffset.y / 10).toFixed(1)}mm
               </div>
               <div className="text-xs text-gray-600 dark:text-gray-400 italic">
-                {patternUploaded ? 'Pattern locked • Drag background to pan' : 'Drag pattern to move • Drag background to pan'}
+                {patternUploaded
+                  ? "Pattern locked • Drag background to pan"
+                  : "Drag pattern to move • Drag background to pan"}
               </div>
             </div>
 
             {/* Zoom Controls Overlay */}
             <div className="absolute bottom-2 sm:bottom-5 right-2 sm:right-5 flex gap-1.5 sm:gap-2 items-center bg-white/95 dark:bg-gray-800/95 backdrop-blur-sm px-2 sm:px-3 py-1.5 sm:py-2 rounded-lg shadow-lg z-10">
-              <button className="w-7 h-7 sm:w-8 sm:h-8 p-1 border border-gray-300 dark:border-gray-600 bg-white dark:bg-gray-700 rounded cursor-pointer transition-all flex items-center justify-center hover:bg-primary-600 hover:text-white hover:border-primary-600 dark:hover:border-primary-600 hover:shadow-md hover:shadow-primary-600/30 disabled:opacity-50 disabled:cursor-not-allowed" onClick={handleCenterPattern} disabled={!pesData || patternUploaded || isUploading} title="Center Pattern in Hoop">
+              <button
+                className="w-7 h-7 sm:w-8 sm:h-8 p-1 border border-gray-300 dark:border-gray-600 bg-white dark:bg-gray-700 rounded cursor-pointer transition-all flex items-center justify-center hover:bg-primary-600 hover:text-white hover:border-primary-600 dark:hover:border-primary-600 hover:shadow-md hover:shadow-primary-600/30 disabled:opacity-50 disabled:cursor-not-allowed"
+                onClick={handleCenterPattern}
+                disabled={!pesData || patternUploaded || isUploading}
+                title="Center Pattern in Hoop"
+              >
                 <ArrowsPointingInIcon className="w-4 h-4 sm:w-5 sm:h-5 dark:text-gray-200" />
               </button>
-              <button className="w-7 h-7 sm:w-8 sm:h-8 p-1 border border-gray-300 dark:border-gray-600 bg-white dark:bg-gray-700 rounded cursor-pointer transition-all flex items-center justify-center hover:bg-primary-600 hover:text-white hover:border-primary-600 dark:hover:border-primary-600 hover:shadow-md hover:shadow-primary-600/30 disabled:opacity-50 disabled:cursor-not-allowed" onClick={handleZoomIn} title="Zoom In">
+              <button
+                className="w-7 h-7 sm:w-8 sm:h-8 p-1 border border-gray-300 dark:border-gray-600 bg-white dark:bg-gray-700 rounded cursor-pointer transition-all flex items-center justify-center hover:bg-primary-600 hover:text-white hover:border-primary-600 dark:hover:border-primary-600 hover:shadow-md hover:shadow-primary-600/30 disabled:opacity-50 disabled:cursor-not-allowed"
+                onClick={handleZoomIn}
+                title="Zoom In"
+              >
                 <PlusIcon className="w-4 h-4 sm:w-5 sm:h-5 dark:text-gray-200" />
               </button>
-              <span className="min-w-[40px] sm:min-w-[50px] text-center text-sm font-semibold text-gray-900 dark:text-gray-100 select-none">{Math.round(stageScale * 100)}%</span>
-              <button className="w-7 h-7 sm:w-8 sm:h-8 p-1 border border-gray-300 dark:border-gray-600 bg-white dark:bg-gray-700 rounded cursor-pointer transition-all flex items-center justify-center hover:bg-primary-600 hover:text-white hover:border-primary-600 dark:hover:border-primary-600 hover:shadow-md hover:shadow-primary-600/30 disabled:opacity-50 disabled:cursor-not-allowed" onClick={handleZoomOut} title="Zoom Out">
+              <span className="min-w-[40px] sm:min-w-[50px] text-center text-sm font-semibold text-gray-900 dark:text-gray-100 select-none">
+                {Math.round(stageScale * 100)}%
+              </span>
+              <button
+                className="w-7 h-7 sm:w-8 sm:h-8 p-1 border border-gray-300 dark:border-gray-600 bg-white dark:bg-gray-700 rounded cursor-pointer transition-all flex items-center justify-center hover:bg-primary-600 hover:text-white hover:border-primary-600 dark:hover:border-primary-600 hover:shadow-md hover:shadow-primary-600/30 disabled:opacity-50 disabled:cursor-not-allowed"
+                onClick={handleZoomOut}
+                title="Zoom Out"
+              >
                 <MinusIcon className="w-4 h-4 sm:w-5 sm:h-5 dark:text-gray-200" />
               </button>
-              <button className="w-7 h-7 sm:w-8 sm:h-8 p-1 border border-gray-300 dark:border-gray-600 bg-white dark:bg-gray-700 rounded cursor-pointer transition-all flex items-center justify-center hover:bg-primary-600 hover:text-white hover:border-primary-600 dark:hover:border-primary-600 hover:shadow-md hover:shadow-primary-600/30 disabled:opacity-50 disabled:cursor-not-allowed ml-1" onClick={handleZoomReset} title="Reset Zoom">
+              <button
+                className="w-7 h-7 sm:w-8 sm:h-8 p-1 border border-gray-300 dark:border-gray-600 bg-white dark:bg-gray-700 rounded cursor-pointer transition-all flex items-center justify-center hover:bg-primary-600 hover:text-white hover:border-primary-600 dark:hover:border-primary-600 hover:shadow-md hover:shadow-primary-600/30 disabled:opacity-50 disabled:cursor-not-allowed ml-1"
+                onClick={handleZoomReset}
+                title="Reset Zoom"
+              >
                 <ArrowPathIcon className="w-4 h-4 sm:w-5 sm:h-5 dark:text-gray-200" />
               </button>
             </div>

src/components/PatternInfo.tsx

@@ -1,26 +1,33 @@
-import type { PesPatternData } from '../formats/import/pesImporter';
+import type { PesPatternData } from "../formats/import/pesImporter";
 
 interface PatternInfoProps {
   pesData: PesPatternData;
   showThreadBlocks?: boolean;
 }
 
-export function PatternInfo({ pesData, showThreadBlocks = false }: PatternInfoProps) {
+export function PatternInfo({
+  pesData,
+  showThreadBlocks = false,
+}: PatternInfoProps) {
   return (
     <>
       <div className="grid grid-cols-3 gap-2 text-xs mb-2">
         <div className="bg-gray-200 dark:bg-gray-700/50 p-2 rounded">
           <span className="text-gray-600 dark:text-gray-400 block">Size</span>
           <span className="font-semibold text-gray-900 dark:text-gray-100">
-            {((pesData.bounds.maxX - pesData.bounds.minX) / 10).toFixed(1)} x{' '}
+            {((pesData.bounds.maxX - pesData.bounds.minX) / 10).toFixed(1)} x{" "}
             {((pesData.bounds.maxY - pesData.bounds.minY) / 10).toFixed(1)} mm
           </span>
         </div>
         <div className="bg-gray-200 dark:bg-gray-700/50 p-2 rounded">
-          <span className="text-gray-600 dark:text-gray-400 block">Stitches</span>
+          <span className="text-gray-600 dark:text-gray-400 block">
+            Stitches
+          </span>
           <span className="font-semibold text-gray-900 dark:text-gray-100">
-            {pesData.penStitches?.stitches.length.toLocaleString() || pesData.stitchCount.toLocaleString()}
-            {pesData.penStitches && pesData.penStitches.stitches.length !== pesData.stitchCount && (
+            {pesData.penStitches?.stitches.length.toLocaleString() ||
+              pesData.stitchCount.toLocaleString()}
+            {pesData.penStitches &&
+              pesData.penStitches.stitches.length !== pesData.stitchCount && (
                 <span
                   className="text-gray-500 dark:text-gray-500 font-normal ml-1"
                   title="Input stitch count from PES file (lock stitches were added for machine compatibility)"
@@ -32,44 +39,50 @@ export function PatternInfo({ pesData, showThreadBlocks = false }: PatternInfoPr
         </div>
         <div className="bg-gray-200 dark:bg-gray-700/50 p-2 rounded">
           <span className="text-gray-600 dark:text-gray-400 block">
-            {showThreadBlocks ? 'Colors / Blocks' : 'Colors'}
+            {showThreadBlocks ? "Colors / Blocks" : "Colors"}
           </span>
           <span className="font-semibold text-gray-900 dark:text-gray-100">
             {showThreadBlocks
               ? `${pesData.uniqueColors.length} / ${pesData.threads.length}`
-              : pesData.uniqueColors.length
-            }
+              : pesData.uniqueColors.length}
           </span>
         </div>
       </div>
 
       <div className="flex items-center gap-2 mb-2">
-        <span className="text-xs text-gray-600 dark:text-gray-400">Colors:</span>
+        <span className="text-xs text-gray-600 dark:text-gray-400">
+          Colors:
+        </span>
         <div className="flex gap-1">
           {pesData.uniqueColors.slice(0, 8).map((color, idx) => {
             // Primary metadata: brand and catalog number
             const primaryMetadata = [
               color.brand,
-              color.catalogNumber ? `#${color.catalogNumber}` : null
-            ].filter(Boolean).join(" ");
+              color.catalogNumber ? `#${color.catalogNumber}` : null,
+            ]
+              .filter(Boolean)
+              .join(" ");
 
             // Secondary metadata: chart and description
-            const secondaryMetadata = [
-              color.chart,
-              color.description
-            ].filter(Boolean).join(" ");
+            const secondaryMetadata = [color.chart, color.description]
+              .filter(Boolean)
+              .join(" ");
 
-            const metadata = [primaryMetadata, secondaryMetadata].filter(Boolean).join(" • ");
+            const metadata = [primaryMetadata, secondaryMetadata]
+              .filter(Boolean)
+              .join(" • ");
 
             // Show which thread blocks use this color in PatternSummaryCard
-            const threadNumbers = color.threadIndices.map(i => i + 1).join(", ");
+            const threadNumbers = color.threadIndices
+              .map((i) => i + 1)
+              .join(", ");
             const tooltipText = showThreadBlocks
-              ? (metadata
+              ? metadata
                 ? `Color ${idx + 1}: ${color.hex} - ${metadata}`
-                  : `Color ${idx + 1}: ${color.hex}`)
-              : (metadata
+                : `Color ${idx + 1}: ${color.hex}`
+              : metadata
                 ? `Color ${idx + 1}: ${color.hex}\n${metadata}\nUsed in thread blocks: ${threadNumbers}`
-                  : `Color ${idx + 1}: ${color.hex}\nUsed in thread blocks: ${threadNumbers}`);
+                : `Color ${idx + 1}: ${color.hex}\nUsed in thread blocks: ${threadNumbers}`;
 
             return (
               <div

src/components/PatternPreviewPlaceholder.tsx

@@ -1,7 +1,9 @@
 export function PatternPreviewPlaceholder() {
   return (
     <div className="lg:h-full bg-white dark:bg-gray-800 p-6 rounded-lg shadow-md animate-fadeIn flex flex-col">
-      <h2 className="text-base lg:text-lg font-semibold mb-4 pb-2 border-b-2 border-gray-300 dark:border-gray-600 dark:text-white flex-shrink-0">Pattern Preview</h2>
+      <h2 className="text-base lg:text-lg font-semibold mb-4 pb-2 border-b-2 border-gray-300 dark:border-gray-600 dark:text-white flex-shrink-0">
+        Pattern Preview
+      </h2>
       <div className="h-[400px] sm:h-[500px] lg:flex-1 flex items-center justify-center bg-gradient-to-br from-gray-50 to-gray-100 dark:from-gray-700 dark:to-gray-800 rounded-lg border-2 border-dashed border-gray-300 dark:border-gray-600 relative overflow-hidden">
         {/* Decorative background pattern */}
         <div className="absolute inset-0 opacity-5 dark:opacity-10">
@@ -12,18 +14,41 @@ export function PatternPreviewPlaceholder() {
 
         <div className="text-center relative z-10">
           <div className="relative inline-block mb-6">
-            <svg className="w-28 h-28 mx-auto text-gray-300 dark:text-gray-600" fill="none" stroke="currentColor" viewBox="0 0 24 24">
-              <path strokeLinecap="round" strokeLinejoin="round" strokeWidth={1.5} d="M7 21h10a2 2 0 002-2V9.414a1 1 0 00-.293-.707l-5.414-5.414A1 1 0 0012.586 3H7a2 2 0 00-2 2v14a2 2 0 002 2z" />
+            <svg
+              className="w-28 h-28 mx-auto text-gray-300 dark:text-gray-600"
+              fill="none"
+              stroke="currentColor"
+              viewBox="0 0 24 24"
+            >
+              <path
+                strokeLinecap="round"
+                strokeLinejoin="round"
+                strokeWidth={1.5}
+                d="M7 21h10a2 2 0 002-2V9.414a1 1 0 00-.293-.707l-5.414-5.414A1 1 0 0012.586 3H7a2 2 0 00-2 2v14a2 2 0 002 2z"
+              />
             </svg>
             <div className="absolute -top-2 -right-2 w-8 h-8 bg-primary-100 dark:bg-primary-900 rounded-full flex items-center justify-center">
-              <svg className="w-5 h-5 text-primary-600 dark:text-primary-400" fill="none" stroke="currentColor" viewBox="0 0 24 24">
-                <path strokeLinecap="round" strokeLinejoin="round" strokeWidth={2} d="M12 4v16m8-8H4" />
+              <svg
+                className="w-5 h-5 text-primary-600 dark:text-primary-400"
+                fill="none"
+                stroke="currentColor"
+                viewBox="0 0 24 24"
+              >
+                <path
+                  strokeLinecap="round"
+                  strokeLinejoin="round"
+                  strokeWidth={2}
+                  d="M12 4v16m8-8H4"
+                />
               </svg>
             </div>
           </div>
-          <h3 className="text-gray-700 dark:text-gray-200 text-base lg:text-lg font-semibold mb-2">No Pattern Loaded</h3>
+          <h3 className="text-gray-700 dark:text-gray-200 text-base lg:text-lg font-semibold mb-2">
+            No Pattern Loaded
+          </h3>
           <p className="text-gray-500 dark:text-gray-400 text-sm mb-4 max-w-sm mx-auto">
-            Connect to your machine and choose a PES embroidery file to see your design preview
+            Connect to your machine and choose a PES embroidery file to see your
+            design preview
           </p>
           <div className="flex items-center justify-center gap-6 text-xs text-gray-400 dark:text-gray-500">
             <div className="flex items-center gap-1">

src/components/PatternSummaryCard.tsx

@@ -1,33 +1,26 @@
-import { useShallow } from 'zustand/react/shallow';
-import { useMachineStore } from '../stores/useMachineStore';
-import { usePatternStore } from '../stores/usePatternStore';
-import { canDeletePattern } from '../utils/machineStateHelpers';
-import { PatternInfo } from './PatternInfo';
-import { DocumentTextIcon, TrashIcon } from '@heroicons/react/24/solid';
+import { useShallow } from "zustand/react/shallow";
+import { useMachineStore } from "../stores/useMachineStore";
+import { usePatternStore } from "../stores/usePatternStore";
+import { canDeletePattern } from "../utils/machineStateHelpers";
+import { PatternInfo } from "./PatternInfo";
+import { DocumentTextIcon, TrashIcon } from "@heroicons/react/24/solid";
 
 export function PatternSummaryCard() {
   // Machine store
-  const {
-    machineStatus,
-    isDeleting,
-    deletePattern,
-  } = useMachineStore(
+  const { machineStatus, isDeleting, deletePattern } = useMachineStore(
     useShallow((state) => ({
       machineStatus: state.machineStatus,
       isDeleting: state.isDeleting,
       deletePattern: state.deletePattern,
-    }))
+    })),
   );
 
   // Pattern store
-  const {
-    pesData,
-    currentFileName,
-  } = usePatternStore(
+  const { pesData, currentFileName } = usePatternStore(
     useShallow((state) => ({
       pesData: state.pesData,
       currentFileName: state.currentFileName,
-    }))
+    })),
   );
 
   if (!pesData) return null;
@@ -38,8 +31,13 @@ export function PatternSummaryCard() {
       <div className="flex items-start gap-3 mb-3">
         <DocumentTextIcon className="w-6 h-6 text-primary-600 dark:text-primary-400 flex-shrink-0 mt-0.5" />
         <div className="flex-1 min-w-0">
-          <h3 className="text-sm font-semibold text-gray-900 dark:text-white mb-1">Active Pattern</h3>
-          <p className="text-xs text-gray-600 dark:text-gray-400 truncate" title={currentFileName}>
+          <h3 className="text-sm font-semibold text-gray-900 dark:text-white mb-1">
+            Active Pattern
+          </h3>
+          <p
+            className="text-xs text-gray-600 dark:text-gray-400 truncate"
+            title={currentFileName}
+          >
             {currentFileName}
           </p>
         </div>
@@ -55,9 +53,24 @@ export function PatternSummaryCard() {
         >
           {isDeleting ? (
             <>
-              <svg className="w-3 h-3 animate-spin" fill="none" viewBox="0 0 24 24">
-                <circle className="opacity-25" cx="12" cy="12" r="10" stroke="currentColor" strokeWidth="4"></circle>
-                <path className="opacity-75" fill="currentColor" d="M4 12a8 8 0 018-8V0C5.373 0 0 5.373 0 12h4zm2 5.291A7.962 7.962 0 014 12H0c0 3.042 1.135 5.824 3 7.938l3-2.647z"></path>
+              <svg
+                className="w-3 h-3 animate-spin"
+                fill="none"
+                viewBox="0 0 24 24"
+              >
+                <circle
+                  className="opacity-25"
+                  cx="12"
+                  cy="12"
+                  r="10"
+                  stroke="currentColor"
+                  strokeWidth="4"
+                ></circle>
+                <path
+                  className="opacity-75"
+                  fill="currentColor"
+                  d="M4 12a8 8 0 018-8V0C5.373 0 0 5.373 0 12h4zm2 5.291A7.962 7.962 0 014 12H0c0 3.042 1.135 5.824 3 7.938l3-2.647z"
+                ></path>
               </svg>
               Deleting...
             </>

src/components/ProgressMonitor.tsx

@@ -1,7 +1,7 @@
 import { useRef, useEffect, useState, useMemo } from "react";
-import { useShallow } from 'zustand/react/shallow';
-import { useMachineStore } from '../stores/useMachineStore';
-import { usePatternStore } from '../stores/usePatternStore';
+import { useShallow } from "zustand/react/shallow";
+import { useMachineStore } from "../stores/useMachineStore";
+import { usePatternStore } from "../stores/usePatternStore";
 import {
   CheckCircleIcon,
   ArrowRightIcon,
@@ -42,7 +42,7 @@ export function ProgressMonitor() {
       startMaskTrace: state.startMaskTrace,
       startSewing: state.startSewing,
       resumeSewing: state.resumeSewing,
-    }))
+    })),
   );
 
   // Pattern store
@@ -59,12 +59,13 @@ export function ProgressMonitor() {
 
   // Use PEN stitch count as fallback when machine reports 0 total stitches
   const totalStitches = patternInfo
-    ? (patternInfo.totalStitches === 0 && pesData?.penStitches
+    ? patternInfo.totalStitches === 0 && pesData?.penStitches
       ? pesData.penStitches.stitches.length
-        : patternInfo.totalStitches)
+      : patternInfo.totalStitches
     : 0;
 
-  const progressPercent = totalStitches > 0
+  const progressPercent =
+    totalStitches > 0
       ? ((sewingProgress?.currentStitch || 0) / totalStitches) * 100
       : 0;
 
@@ -116,7 +117,10 @@ export function ProgressMonitor() {
       return { totalMinutes: 0, elapsedMinutes: 0 };
     }
     const result = calculatePatternTime(colorBlocks, currentStitch);
-    return { totalMinutes: result.totalMinutes, elapsedMinutes: result.elapsedMinutes };
+    return {
+      totalMinutes: result.totalMinutes,
+      elapsedMinutes: result.elapsedMinutes,
+    };
   }, [colorBlocks, currentStitch]);
 
   // Auto-scroll to current block
@@ -132,7 +136,8 @@ export function ProgressMonitor() {
   // Handle scroll to detect if at bottom
   const handleColorBlocksScroll = () => {
     if (colorBlocksScrollRef.current) {
-      const { scrollTop, scrollHeight, clientHeight } = colorBlocksScrollRef.current;
+      const { scrollTop, scrollHeight, clientHeight } =
+        colorBlocksScrollRef.current;
       const isAtBottom = scrollTop + clientHeight >= scrollHeight - 5; // 5px threshold
       setShowGradient(!isAtBottom);
     }
@@ -149,8 +154,8 @@ export function ProgressMonitor() {
     };
 
     checkScrollable();
-    window.addEventListener('resize', checkScrollable);
-    return () => window.removeEventListener('resize', checkScrollable);
+    window.addEventListener("resize", checkScrollable);
+    return () => window.removeEventListener("resize", checkScrollable);
   }, [colorBlocks]);
 
   const stateIndicatorColors = {
@@ -343,7 +348,10 @@ export function ProgressMonitor() {
                       <div className="flex-1 min-w-0">
                         <div className="font-semibold text-xs text-gray-900 dark:text-gray-100">
                           Thread {block.colorIndex + 1}
-                        {(block.threadBrand || block.threadChart || block.threadDescription || block.threadCatalogNumber) && (
+                          {(block.threadBrand ||
+                            block.threadChart ||
+                            block.threadDescription ||
+                            block.threadCatalogNumber) && (
                             <span className="font-normal text-gray-600 dark:text-gray-400">
                               {" "}
                               (
@@ -351,16 +359,24 @@ export function ProgressMonitor() {
                                 // Primary metadata: brand and catalog number
                                 const primaryMetadata = [
                                   block.threadBrand,
-                                block.threadCatalogNumber ? `#${block.threadCatalogNumber}` : null
-                              ].filter(Boolean).join(" ");
+                                  block.threadCatalogNumber
+                                    ? `#${block.threadCatalogNumber}`
+                                    : null,
+                                ]
+                                  .filter(Boolean)
+                                  .join(" ");
 
                                 // Secondary metadata: chart and description
                                 const secondaryMetadata = [
                                   block.threadChart,
-                                block.threadDescription
-                              ].filter(Boolean).join(" ");
+                                  block.threadDescription,
+                                ]
+                                  .filter(Boolean)
+                                  .join(" ");
 
-                              return [primaryMetadata, secondaryMetadata].filter(Boolean).join(" • ");
+                                return [primaryMetadata, secondaryMetadata]
+                                  .filter(Boolean)
+                                  .join(" • ");
                               })()}
                               )
                             </span>

src/components/SkeletonLoader.tsx

@@ -1,15 +1,19 @@
 interface SkeletonLoaderProps {
   className?: string;
-  variant?: 'text' | 'rect' | 'circle';
+  variant?: "text" | "rect" | "circle";
 }
 
-export function SkeletonLoader({ className = '', variant = 'rect' }: SkeletonLoaderProps) {
-  const baseClasses = 'animate-pulse bg-gradient-to-r from-gray-200 via-gray-300 to-gray-200 dark:from-gray-700 dark:via-gray-600 dark:to-gray-700 bg-[length:200%_100%]';
+export function SkeletonLoader({
+  className = "",
+  variant = "rect",
+}: SkeletonLoaderProps) {
+  const baseClasses =
+    "animate-pulse bg-gradient-to-r from-gray-200 via-gray-300 to-gray-200 dark:from-gray-700 dark:via-gray-600 dark:to-gray-700 bg-[length:200%_100%]";
 
   const variantClasses = {
-    text: 'h-4 rounded',
-    rect: 'rounded-lg',
-    circle: 'rounded-full'
+    text: "h-4 rounded",
+    rect: "rounded-lg",
+    circle: "rounded-full",
   };
 
   return (
@@ -29,9 +33,24 @@ export function PatternCanvasSkeleton() {
             <div className="relative w-24 h-24 mx-auto">
               <SkeletonLoader className="w-24 h-24" variant="circle" />
               <div className="absolute inset-0 flex items-center justify-center">
-                <svg className="w-12 h-12 text-gray-400 dark:text-gray-500 animate-spin" fill="none" viewBox="0 0 24 24">
-                  <circle className="opacity-25" cx="12" cy="12" r="10" stroke="currentColor" strokeWidth="4"></circle>
-                  <path className="opacity-75" fill="currentColor" d="M4 12a8 8 0 018-8V0C5.373 0 0 5.373 0 12h4zm2 5.291A7.962 7.962 0 014 12H0c0 3.042 1.135 5.824 3 7.938l3-2.647z"></path>
+                <svg
+                  className="w-12 h-12 text-gray-400 dark:text-gray-500 animate-spin"
+                  fill="none"
+                  viewBox="0 0 24 24"
+                >
+                  <circle
+                    className="opacity-25"
+                    cx="12"
+                    cy="12"
+                    r="10"
+                    stroke="currentColor"
+                    strokeWidth="4"
+                  ></circle>
+                  <path
+                    className="opacity-75"
+                    fill="currentColor"
+                    d="M4 12a8 8 0 018-8V0C5.373 0 0 5.373 0 12h4zm2 5.291A7.962 7.962 0 014 12H0c0 3.042 1.135 5.824 3 7.938l3-2.647z"
+                  ></path>
                 </svg>
               </div>
             </div>

src/components/WorkflowStepper.tsx

@@ -1,10 +1,14 @@
-import { useState, useRef, useEffect } from 'react';
-import { useShallow } from 'zustand/react/shallow';
-import { useMachineStore, usePatternUploaded } from '../stores/useMachineStore';
-import { usePatternStore } from '../stores/usePatternStore';
-import { CheckCircleIcon, InformationCircleIcon, ExclamationTriangleIcon } from '@heroicons/react/24/solid';
-import { MachineStatus } from '../types/machine';
-import { getErrorDetails, hasError } from '../utils/errorCodeHelpers';
+import { useState, useRef, useEffect } from "react";
+import { useShallow } from "zustand/react/shallow";
+import { useMachineStore, usePatternUploaded } from "../stores/useMachineStore";
+import { usePatternStore } from "../stores/usePatternStore";
+import {
+  CheckCircleIcon,
+  InformationCircleIcon,
+  ExclamationTriangleIcon,
+} from "@heroicons/react/24/solid";
+import { MachineStatus } from "../types/machine";
+import { getErrorDetails, hasError } from "../utils/errorCodeHelpers";
 
 interface Step {
   id: number;
@@ -13,14 +17,14 @@ interface Step {
 }
 
 const steps: Step[] = [
-  { id: 1, label: 'Connect', description: 'Connect to machine' },
-  { id: 2, label: 'Home Machine', description: 'Initialize hoop position' },
-  { id: 3, label: 'Load Pattern', description: 'Choose PES file' },
-  { id: 4, label: 'Upload', description: 'Upload to machine' },
-  { id: 5, label: 'Mask Trace', description: 'Trace pattern area' },
-  { id: 6, label: 'Start Sewing', description: 'Begin embroidery' },
-  { id: 7, label: 'Monitor', description: 'Watch progress' },
-  { id: 8, label: 'Complete', description: 'Finish and remove' },
+  { id: 1, label: "Connect", description: "Connect to machine" },
+  { id: 2, label: "Home Machine", description: "Initialize hoop position" },
+  { id: 3, label: "Load Pattern", description: "Choose PES file" },
+  { id: 4, label: "Upload", description: "Upload to machine" },
+  { id: 5, label: "Mask Trace", description: "Trace pattern area" },
+  { id: 6, label: "Start Sewing", description: "Begin embroidery" },
+  { id: 7, label: "Monitor", description: "Watch progress" },
+  { id: 8, label: "Complete", description: "Finish and remove" },
 ];
 
 // Helper function to get guide content for a step
@@ -29,7 +33,7 @@ function getGuideContent(
   machineStatus: MachineStatus,
   hasError: boolean,
   errorCode?: number,
-  errorMessage?: string
+  errorMessage?: string,
 ) {
   // Check for errors first
   if (hasError) {
@@ -37,19 +41,22 @@ function getGuideContent(
 
     if (errorDetails?.isInformational) {
       return {
-        type: 'info' as const,
+        type: "info" as const,
         title: errorDetails.title,
         description: errorDetails.description,
-        items: errorDetails.solutions || []
+        items: errorDetails.solutions || [],
       };
     }
 
     return {
-      type: 'error' as const,
-      title: errorDetails?.title || 'Error Occurred',
-      description: errorDetails?.description || errorMessage || 'An error occurred. Please check the machine and try again.',
+      type: "error" as const,
+      title: errorDetails?.title || "Error Occurred",
+      description:
+        errorDetails?.description ||
+        errorMessage ||
+        "An error occurred. Please check the machine and try again.",
       items: errorDetails?.solutions || [],
-      errorCode
+      errorCode,
     };
   }
 
@@ -57,156 +64,166 @@ function getGuideContent(
   switch (stepId) {
     case 1:
       return {
-        type: 'info' as const,
-        title: 'Step 1: Connect to Machine',
-        description: 'To get started, connect to your Brother embroidery machine via Bluetooth.',
+        type: "info" as const,
+        title: "Step 1: Connect to Machine",
+        description:
+          "To get started, connect to your Brother embroidery machine via Bluetooth.",
         items: [
-          'Make sure your machine is powered on',
-          'Enable Bluetooth on your machine',
-          'Click the "Connect to Machine" button below'
-        ]
+          "Make sure your machine is powered on",
+          "Enable Bluetooth on your machine",
+          'Click the "Connect to Machine" button below',
+        ],
       };
 
     case 2:
       return {
-        type: 'info' as const,
-        title: 'Step 2: Home Machine',
-        description: 'The hoop needs to be removed and an initial homing procedure must be performed.',
+        type: "info" as const,
+        title: "Step 2: Home Machine",
+        description:
+          "The hoop needs to be removed and an initial homing procedure must be performed.",
         items: [
-          'Remove the embroidery hoop from the machine completely',
-          'Press the Accept button on the machine',
-          'Wait for the machine to complete its initialization (homing)',
-          'Once initialization is complete, reattach the hoop',
-          'The machine should now recognize the hoop correctly'
-        ]
+          "Remove the embroidery hoop from the machine completely",
+          "Press the Accept button on the machine",
+          "Wait for the machine to complete its initialization (homing)",
+          "Once initialization is complete, reattach the hoop",
+          "The machine should now recognize the hoop correctly",
+        ],
       };
 
     case 3:
       return {
-        type: 'info' as const,
-        title: 'Step 3: Load Your Pattern',
-        description: 'Choose a PES embroidery file from your computer to preview and upload.',
+        type: "info" as const,
+        title: "Step 3: Load Your Pattern",
+        description:
+          "Choose a PES embroidery file from your computer to preview and upload.",
         items: [
           'Click "Choose PES File" in the Pattern File section',
-          'Select your embroidery design (.pes file)',
-          'Review the pattern preview on the right',
-          'You can drag the pattern to adjust its position'
-        ]
+          "Select your embroidery design (.pes file)",
+          "Review the pattern preview on the right",
+          "You can drag the pattern to adjust its position",
+        ],
       };
 
     case 4:
       return {
-        type: 'info' as const,
-        title: 'Step 4: Upload Pattern to Machine',
-        description: 'Send your pattern to the embroidery machine to prepare for sewing.',
+        type: "info" as const,
+        title: "Step 4: Upload Pattern to Machine",
+        description:
+          "Send your pattern to the embroidery machine to prepare for sewing.",
         items: [
-          'Review the pattern preview to ensure it\'s positioned correctly',
-          'Check the pattern size matches your hoop',
+          "Review the pattern preview to ensure it's positioned correctly",
+          "Check the pattern size matches your hoop",
           'Click "Upload to Machine" when ready',
-          'Wait for the upload to complete (this may take a minute)'
-        ]
+          "Wait for the upload to complete (this may take a minute)",
+        ],
       };
 
     case 5:
       // Check machine status for substates
       if (machineStatus === MachineStatus.MASK_TRACE_LOCK_WAIT) {
         return {
-          type: 'warning' as const,
-          title: 'Machine Action Required',
-          description: 'The machine is ready to trace the pattern outline.',
+          type: "warning" as const,
+          title: "Machine Action Required",
+          description: "The machine is ready to trace the pattern outline.",
           items: [
-            'Press the button on your machine to confirm and start the mask trace',
-            'Ensure the hoop is properly attached',
-            'Make sure the needle area is clear'
-          ]
+            "Press the button on your machine to confirm and start the mask trace",
+            "Ensure the hoop is properly attached",
+            "Make sure the needle area is clear",
+          ],
         };
       }
       if (machineStatus === MachineStatus.MASK_TRACING) {
         return {
-          type: 'progress' as const,
-          title: 'Mask Trace In Progress',
-          description: 'The machine is tracing the pattern boundary. Please wait...',
+          type: "progress" as const,
+          title: "Mask Trace In Progress",
+          description:
+            "The machine is tracing the pattern boundary. Please wait...",
           items: [
-            'Watch the machine trace the outline',
-            'Verify the pattern fits within your hoop',
-            'Do not interrupt the machine'
-          ]
+            "Watch the machine trace the outline",
+            "Verify the pattern fits within your hoop",
+            "Do not interrupt the machine",
+          ],
         };
       }
       return {
-        type: 'info' as const,
-        title: 'Step 5: Start Mask Trace',
-        description: 'The mask trace helps the machine understand the pattern boundaries.',
+        type: "info" as const,
+        title: "Step 5: Start Mask Trace",
+        description:
+          "The mask trace helps the machine understand the pattern boundaries.",
         items: [
           'Click "Start Mask Trace" button in the Sewing Progress section',
-          'The machine will trace the pattern outline',
-          'This ensures the hoop is positioned correctly'
-        ]
+          "The machine will trace the pattern outline",
+          "This ensures the hoop is positioned correctly",
+        ],
       };
 
     case 6:
       return {
-        type: 'success' as const,
-        title: 'Step 6: Ready to Sew!',
-        description: 'The machine is ready to begin embroidering your pattern.',
+        type: "success" as const,
+        title: "Step 6: Ready to Sew!",
+        description: "The machine is ready to begin embroidering your pattern.",
         items: [
-          'Verify your thread colors are correct',
-          'Ensure the fabric is properly hooped',
-          'Click "Start Sewing" when ready'
-        ]
+          "Verify your thread colors are correct",
+          "Ensure the fabric is properly hooped",
+          'Click "Start Sewing" when ready',
+        ],
       };
 
     case 7:
       // Check for substates
       if (machineStatus === MachineStatus.COLOR_CHANGE_WAIT) {
         return {
-          type: 'warning' as const,
-          title: 'Thread Change Required',
-          description: 'The machine needs a different thread color to continue.',
+          type: "warning" as const,
+          title: "Thread Change Required",
+          description:
+            "The machine needs a different thread color to continue.",
           items: [
-            'Check the color blocks section to see which thread is needed',
-            'Change to the correct thread color',
-            'Press the button on your machine to resume sewing'
-          ]
+            "Check the color blocks section to see which thread is needed",
+            "Change to the correct thread color",
+            "Press the button on your machine to resume sewing",
+          ],
         };
       }
-      if (machineStatus === MachineStatus.PAUSE ||
+      if (
+        machineStatus === MachineStatus.PAUSE ||
         machineStatus === MachineStatus.STOP ||
-          machineStatus === MachineStatus.SEWING_INTERRUPTION) {
+        machineStatus === MachineStatus.SEWING_INTERRUPTION
+      ) {
         return {
-          type: 'warning' as const,
-          title: 'Sewing Paused',
-          description: 'The embroidery has been paused or interrupted.',
+          type: "warning" as const,
+          title: "Sewing Paused",
+          description: "The embroidery has been paused or interrupted.",
           items: [
-            'Check if everything is okay with the machine',
+            "Check if everything is okay with the machine",
             'Click "Resume Sewing" when ready to continue',
-            'The machine will pick up where it left off'
-          ]
+            "The machine will pick up where it left off",
+          ],
         };
       }
       return {
-        type: 'progress' as const,
-        title: 'Step 7: Sewing In Progress',
-        description: 'Your embroidery is being stitched. Monitor the progress below.',
+        type: "progress" as const,
+        title: "Step 7: Sewing In Progress",
+        description:
+          "Your embroidery is being stitched. Monitor the progress below.",
         items: [
-          'Watch the progress bar and current stitch count',
-          'The machine will pause when a color change is needed',
-          'Do not leave the machine unattended'
-        ]
+          "Watch the progress bar and current stitch count",
+          "The machine will pause when a color change is needed",
+          "Do not leave the machine unattended",
+        ],
       };
 
     case 8:
       return {
-        type: 'success' as const,
-        title: 'Step 8: Embroidery Complete!',
-        description: 'Your embroidery is finished. Great work!',
+        type: "success" as const,
+        title: "Step 8: Embroidery Complete!",
+        description: "Your embroidery is finished. Great work!",
         items: [
-          'Remove the hoop from the machine',
-          'Press the Accept button on the machine',
-          'Carefully remove your finished embroidery',
-          'Trim any jump stitches or loose threads',
-          'Click "Delete Pattern" to start a new project'
-        ]
+          "Remove the hoop from the machine",
+          "Press the Accept button on the machine",
+          "Carefully remove your finished embroidery",
+          "Trim any jump stitches or loose threads",
+          'Click "Delete Pattern" to start a new project',
+        ],
       };
 
     default:
@@ -214,7 +231,12 @@ function getGuideContent(
   }
 }
 
-function getCurrentStep(machineStatus: MachineStatus, isConnected: boolean, hasPattern: boolean, patternUploaded: boolean): number {
+function getCurrentStep(
+  machineStatus: MachineStatus,
+  isConnected: boolean,
+  hasPattern: boolean,
+  patternUploaded: boolean,
+): number {
   if (!isConnected) return 1;
 
   // Check if machine needs homing (Initial state)
@@ -262,23 +284,26 @@ export function WorkflowStepper() {
       isConnected: state.isConnected,
       machineError: state.machineError,
       error: state.error,
-    }))
+    })),
   );
 
   // Pattern store
-  const {
-    pesData,
-  } = usePatternStore(
+  const { pesData } = usePatternStore(
     useShallow((state) => ({
       pesData: state.pesData,
-    }))
+    })),
   );
 
   // Derived state: pattern is uploaded if machine has pattern info
   const patternUploaded = usePatternUploaded();
   const hasPattern = pesData !== null;
   const hasErrorFlag = hasError(machineError);
-  const currentStep = getCurrentStep(machineStatus, isConnected, hasPattern, patternUploaded);
+  const currentStep = getCurrentStep(
+    machineStatus,
+    isConnected,
+    hasPattern,
+    patternUploaded,
+  );
   const [showPopover, setShowPopover] = useState(false);
   const [popoverStep, setPopoverStep] = useState<number | null>(null);
   const popoverRef = useRef<HTMLDivElement>(null);
@@ -287,10 +312,13 @@ export function WorkflowStepper() {
   // Close popover when clicking outside
   useEffect(() => {
     const handleClickOutside = (event: MouseEvent) => {
-      if (popoverRef.current && !popoverRef.current.contains(event.target as Node)) {
+      if (
+        popoverRef.current &&
+        !popoverRef.current.contains(event.target as Node)
+      ) {
         // Check if click was on a step circle
-        const clickedStep = Object.values(stepRefs.current).find(ref =>
-          ref?.contains(event.target as Node)
+        const clickedStep = Object.values(stepRefs.current).find((ref) =>
+          ref?.contains(event.target as Node),
         );
         if (!clickedStep) {
           setShowPopover(false);
@@ -299,8 +327,9 @@ export function WorkflowStepper() {
     };
 
     if (showPopover) {
-      document.addEventListener('mousedown', handleClickOutside);
-      return () => document.removeEventListener('mousedown', handleClickOutside);
+      document.addEventListener("mousedown", handleClickOutside);
+      return () =>
+        document.removeEventListener("mousedown", handleClickOutside);
     }
   }, [showPopover]);
 
@@ -318,16 +347,23 @@ export function WorkflowStepper() {
   };
 
   return (
-    <div className="relative max-w-5xl mx-auto mt-2 lg:mt-4" role="navigation" aria-label="Workflow progress">
+    <div
+      className="relative max-w-5xl mx-auto mt-2 lg:mt-4"
+      role="navigation"
+      aria-label="Workflow progress"
+    >
       {/* Progress bar background */}
-      <div className="absolute top-4 lg:top-5 left-0 right-0 h-0.5 lg:h-1 bg-primary-400/20 dark:bg-primary-600/20 rounded-full" style={{ left: '16px', right: '16px' }} />
+      <div
+        className="absolute top-4 lg:top-5 left-0 right-0 h-0.5 lg:h-1 bg-primary-400/20 dark:bg-primary-600/20 rounded-full"
+        style={{ left: "16px", right: "16px" }}
+      />
 
       {/* Progress bar fill */}
       <div
         className="absolute top-4 lg:top-5 left-0 h-0.5 lg:h-1 bg-gradient-to-r from-success-500 to-primary-500 dark:from-success-600 dark:to-primary-600 transition-all duration-500 rounded-full"
         style={{
-          left: '16px',
-          width: `calc(${((currentStep - 1) / (steps.length - 1)) * 100}% - 16px)`
+          left: "16px",
+          width: `calc(${((currentStep - 1) / (steps.length - 1)) * 100}% - 16px)`,
         }}
         role="progressbar"
         aria-valuenow={currentStep}
@@ -349,26 +385,31 @@ export function WorkflowStepper() {
               className="flex flex-col items-center"
               style={{ flex: 1 }}
               role="listitem"
-              aria-current={isCurrent ? 'step' : undefined}
+              aria-current={isCurrent ? "step" : undefined}
             >
               {/* Step circle */}
               <div
-                ref={(el) => { stepRefs.current[step.id] = el; }}
+                ref={(el) => {
+                  stepRefs.current[step.id] = el;
+                }}
                 onClick={() => handleStepClick(step.id)}
                 className={`
                   w-8 h-8 lg:w-10 lg:h-10 rounded-full flex items-center justify-center font-bold text-xs transition-all duration-300 border-2 shadow-md
-                  ${step.id <= currentStep ? 'cursor-pointer hover:scale-110' : 'cursor-not-allowed'}
-                  ${isComplete ? 'bg-success-500 dark:bg-success-600 border-success-400 dark:border-success-500 text-white shadow-success-500/30 dark:shadow-success-600/30' : ''}
-                  ${isCurrent ? 'bg-primary-600 dark:bg-primary-700 border-primary-500 dark:border-primary-600 text-white scale-105 lg:scale-110 shadow-primary-600/40 dark:shadow-primary-700/40 ring-2 ring-primary-300 dark:ring-primary-500 ring-offset-2 dark:ring-offset-gray-900' : ''}
-                  ${isUpcoming ? 'bg-primary-700 dark:bg-primary-800 border-primary-500/30 dark:border-primary-600/30 text-primary-200/70 dark:text-primary-300/70' : ''}
-                  ${showPopover && popoverStep === step.id ? 'ring-4 ring-white dark:ring-gray-800' : ''}
+                  ${step.id <= currentStep ? "cursor-pointer hover:scale-110" : "cursor-not-allowed"}
+                  ${isComplete ? "bg-success-500 dark:bg-success-600 border-success-400 dark:border-success-500 text-white shadow-success-500/30 dark:shadow-success-600/30" : ""}
+                  ${isCurrent ? "bg-primary-600 dark:bg-primary-700 border-primary-500 dark:border-primary-600 text-white scale-105 lg:scale-110 shadow-primary-600/40 dark:shadow-primary-700/40 ring-2 ring-primary-300 dark:ring-primary-500 ring-offset-2 dark:ring-offset-gray-900" : ""}
+                  ${isUpcoming ? "bg-primary-700 dark:bg-primary-800 border-primary-500/30 dark:border-primary-600/30 text-primary-200/70 dark:text-primary-300/70" : ""}
+                  ${showPopover && popoverStep === step.id ? "ring-4 ring-white dark:ring-gray-800" : ""}
                 `}
-                aria-label={`${step.label}: ${isComplete ? 'completed' : isCurrent ? 'current' : 'upcoming'}. Click for details.`}
+                aria-label={`${step.label}: ${isComplete ? "completed" : isCurrent ? "current" : "upcoming"}. Click for details.`}
                 role="button"
                 tabIndex={step.id <= currentStep ? 0 : -1}
               >
                 {isComplete ? (
-                  <CheckCircleIcon className="w-5 h-5 lg:w-6 lg:h-6" aria-hidden="true" />
+                  <CheckCircleIcon
+                    className="w-5 h-5 lg:w-6 lg:h-6"
+                    aria-hidden="true"
+                  />
                 ) : (
                   step.id
                 )}
@@ -376,9 +417,15 @@ export function WorkflowStepper() {
 
               {/* Step label */}
               <div className="mt-1 lg:mt-2 text-center">
-                <div className={`text-xs font-semibold leading-tight ${
-                  isCurrent ? 'text-white' : isComplete ? 'text-success-200 dark:text-success-300' : 'text-primary-300/70 dark:text-primary-400/70'
-                }`}>
+                <div
+                  className={`text-xs font-semibold leading-tight ${
+                    isCurrent
+                      ? "text-white"
+                      : isComplete
+                        ? "text-success-200 dark:text-success-300"
+                        : "text-primary-300/70 dark:text-primary-400/70"
+                  }`}
+                >
                   {step.label}
                 </div>
               </div>
@@ -396,72 +443,111 @@ export function WorkflowStepper() {
           aria-label="Step guidance"
         >
           {(() => {
-            const content = getGuideContent(popoverStep, machineStatus, hasErrorFlag, machineError, errorMessage || undefined);
+            const content = getGuideContent(
+              popoverStep,
+              machineStatus,
+              hasErrorFlag,
+              machineError,
+              errorMessage || undefined,
+            );
             if (!content) return null;
 
             const colorClasses = {
-              info: 'bg-info-50 dark:bg-info-900/95 border-info-600 dark:border-info-500',
-              success: 'bg-success-50 dark:bg-success-900/95 border-success-600 dark:border-success-500',
-              warning: 'bg-warning-50 dark:bg-warning-900/95 border-warning-600 dark:border-warning-500',
-              error: 'bg-danger-50 dark:bg-danger-900/95 border-danger-600 dark:border-danger-500',
-              progress: 'bg-info-50 dark:bg-info-900/95 border-info-600 dark:border-info-500'
+              info: "bg-info-50 dark:bg-info-900/95 border-info-600 dark:border-info-500",
+              success:
+                "bg-success-50 dark:bg-success-900/95 border-success-600 dark:border-success-500",
+              warning:
+                "bg-warning-50 dark:bg-warning-900/95 border-warning-600 dark:border-warning-500",
+              error:
+                "bg-danger-50 dark:bg-danger-900/95 border-danger-600 dark:border-danger-500",
+              progress:
+                "bg-info-50 dark:bg-info-900/95 border-info-600 dark:border-info-500",
             };
 
             const iconColorClasses = {
-              info: 'text-info-600 dark:text-info-400',
-              success: 'text-success-600 dark:text-success-400',
-              warning: 'text-warning-600 dark:text-warning-400',
-              error: 'text-danger-600 dark:text-danger-400',
-              progress: 'text-info-600 dark:text-info-400'
+              info: "text-info-600 dark:text-info-400",
+              success: "text-success-600 dark:text-success-400",
+              warning: "text-warning-600 dark:text-warning-400",
+              error: "text-danger-600 dark:text-danger-400",
+              progress: "text-info-600 dark:text-info-400",
             };
 
             const textColorClasses = {
-              info: 'text-info-900 dark:text-info-200',
-              success: 'text-success-900 dark:text-success-200',
-              warning: 'text-warning-900 dark:text-warning-200',
-              error: 'text-danger-900 dark:text-danger-200',
-              progress: 'text-info-900 dark:text-info-200'
+              info: "text-info-900 dark:text-info-200",
+              success: "text-success-900 dark:text-success-200",
+              warning: "text-warning-900 dark:text-warning-200",
+              error: "text-danger-900 dark:text-danger-200",
+              progress: "text-info-900 dark:text-info-200",
             };
 
             const descColorClasses = {
-              info: 'text-info-800 dark:text-info-300',
-              success: 'text-success-800 dark:text-success-300',
-              warning: 'text-warning-800 dark:text-warning-300',
-              error: 'text-danger-800 dark:text-danger-300',
-              progress: 'text-info-800 dark:text-info-300'
+              info: "text-info-800 dark:text-info-300",
+              success: "text-success-800 dark:text-success-300",
+              warning: "text-warning-800 dark:text-warning-300",
+              error: "text-danger-800 dark:text-danger-300",
+              progress: "text-info-800 dark:text-info-300",
             };
 
             const listColorClasses = {
-              info: 'text-blue-700 dark:text-blue-300',
-              success: 'text-green-700 dark:text-green-300',
-              warning: 'text-yellow-700 dark:text-yellow-300',
-              error: 'text-red-700 dark:text-red-300',
-              progress: 'text-cyan-700 dark:text-cyan-300'
+              info: "text-blue-700 dark:text-blue-300",
+              success: "text-green-700 dark:text-green-300",
+              warning: "text-yellow-700 dark:text-yellow-300",
+              error: "text-red-700 dark:text-red-300",
+              progress: "text-cyan-700 dark:text-cyan-300",
             };
 
-            const Icon = content.type === 'error' ? ExclamationTriangleIcon : InformationCircleIcon;
+            const Icon =
+              content.type === "error"
+                ? ExclamationTriangleIcon
+                : InformationCircleIcon;
 
             return (
-              <div className={`${colorClasses[content.type]} border-l-4 p-4 rounded-lg shadow-xl backdrop-blur-sm`}>
+              <div
+                className={`${colorClasses[content.type]} border-l-4 p-4 rounded-lg shadow-xl backdrop-blur-sm`}
+              >
                 <div className="flex items-start gap-3">
-                  <Icon className={`w-6 h-6 ${iconColorClasses[content.type]} flex-shrink-0 mt-0.5`} />
+                  <Icon
+                    className={`w-6 h-6 ${iconColorClasses[content.type]} flex-shrink-0 mt-0.5`}
+                  />
                   <div className="flex-1">
-                    <h3 className={`text-base font-semibold ${textColorClasses[content.type]} mb-2`}>
+                    <h3
+                      className={`text-base font-semibold ${textColorClasses[content.type]} mb-2`}
+                    >
                       {content.title}
                     </h3>
-                    <p className={`text-sm ${descColorClasses[content.type]} mb-3`}>
+                    <p
+                      className={`text-sm ${descColorClasses[content.type]} mb-3`}
+                    >
                       {content.description}
                     </p>
                     {content.items && content.items.length > 0 && (
-                      <ul className={`list-disc list-inside text-sm ${listColorClasses[content.type]} space-y-1`}>
+                      <ul
+                        className={`list-disc list-inside text-sm ${listColorClasses[content.type]} space-y-1`}
+                      >
                         {content.items.map((item, index) => (
-                          <li key={index} className="pl-2" dangerouslySetInnerHTML={{ __html: item.replace(/\*\*(.*?)\*\*/g, '<strong>$1</strong>') }} />
+                          <li
+                            key={index}
+                            className="pl-2"
+                            dangerouslySetInnerHTML={{
+                              __html: item.replace(
+                                /\*\*(.*?)\*\*/g,
+                                "<strong>$1</strong>",
+                              ),
+                            }}
+                          />
                         ))}
                       </ul>
                     )}
-                    {content.type === 'error' && content.errorCode !== undefined && (
-                      <p className={`text-xs ${descColorClasses[content.type]} mt-3 font-mono`}>
-                        Error Code: 0x{content.errorCode.toString(16).toUpperCase().padStart(2, '0')}
+                    {content.type === "error" &&
+                      content.errorCode !== undefined && (
+                        <p
+                          className={`text-xs ${descColorClasses[content.type]} mt-3 font-mono`}
+                        >
+                          Error Code: 0x
+                          {content.errorCode
+                            .toString(16)
+                            .toUpperCase()
+                            .padStart(2, "0")}
                         </p>
                       )}
                   </div>

src/formats/import/client.ts

@@ -1,9 +1,9 @@
-import type { WorkerMessage, WorkerResponse } from './worker';
-import PatternConverterWorker from './worker?worker';
-import { decodePenData } from '../pen/decoder';
-import type { DecodedPenData } from '../pen/types';
+import type { WorkerMessage, WorkerResponse } from "./worker";
+import PatternConverterWorker from "./worker?worker";
+import { decodePenData } from "../pen/decoder";
+import type { DecodedPenData } from "../pen/types";
 
-export type PyodideState = 'not_loaded' | 'loading' | 'ready' | 'error';
+export type PyodideState = "not_loaded" | "loading" | "ready" | "error";
 
 export interface PesPatternData {
   stitches: number[][]; // Original PES stitches (for reference)
@@ -40,7 +40,7 @@ export type ProgressCallback = (progress: number, step: string) => void;
 
 class PatternConverterClient {
   private worker: Worker | null = null;
-  private state: PyodideState = 'not_loaded';
+  private state: PyodideState = "not_loaded";
   private error: string | null = null;
   private initPromise: Promise<void> | null = null;
   private progressCallbacks: Set<ProgressCallback> = new Set();
@@ -64,7 +64,7 @@ class PatternConverterClient {
    */
   async initialize(onProgress?: ProgressCallback): Promise<void> {
     // If already ready, return immediately
-    if (this.state === 'ready') {
+    if (this.state === "ready") {
       return;
     }
 
@@ -78,13 +78,13 @@ class PatternConverterClient {
 
     // Create worker if it doesn't exist
     if (!this.worker) {
-      console.log('[PatternConverterClient] Creating worker...');
+      console.log("[PatternConverterClient] Creating worker...");
       try {
         this.worker = new PatternConverterWorker();
-        console.log('[PatternConverterClient] Worker created successfully');
+        console.log("[PatternConverterClient] Worker created successfully");
         this.setupWorkerListeners();
       } catch (err) {
-        console.error('[PatternConverterClient] Failed to create worker:', err);
+        console.error("[PatternConverterClient] Failed to create worker:", err);
         throw err;
       }
     }
@@ -95,7 +95,7 @@ class PatternConverterClient {
     }
 
     // Start initialization
-    this.state = 'loading';
+    this.state = "loading";
     this.error = null;
 
     this.initPromise = new Promise<void>((resolve, reject) => {
@@ -103,44 +103,55 @@ class PatternConverterClient {
         const message = event.data;
 
         switch (message.type) {
-          case 'INIT_PROGRESS':
+          case "INIT_PROGRESS":
             // Notify all progress callbacks
             this.progressCallbacks.forEach((callback) => {
               callback(message.progress, message.step);
             });
             break;
 
-          case 'INIT_COMPLETE':
-            this.state = 'ready';
+          case "INIT_COMPLETE":
+            this.state = "ready";
             this.progressCallbacks.clear();
-            this.worker?.removeEventListener('message', handleMessage);
+            this.worker?.removeEventListener("message", handleMessage);
             resolve();
             break;
 
-          case 'INIT_ERROR':
-            this.state = 'error';
+          case "INIT_ERROR":
+            this.state = "error";
             this.error = message.error;
             this.progressCallbacks.clear();
-            this.worker?.removeEventListener('message', handleMessage);
+            this.worker?.removeEventListener("message", handleMessage);
             reject(new Error(message.error));
             break;
         }
       };
 
-      this.worker?.addEventListener('message', handleMessage);
+      this.worker?.addEventListener("message", handleMessage);
 
       // Send initialization message with asset URLs
       // Resolve URLs relative to the current page location
-      const baseURL = window.location.origin + window.location.pathname.replace(/\/[^/]*$/, '/');
-      const pyodideIndexURL = new URL('assets/', baseURL).href;
-      const pystitchWheelURL = new URL('pystitch-1.0.0-py3-none-any.whl', baseURL).href;
+      const baseURL =
+        window.location.origin +
+        window.location.pathname.replace(/\/[^/]*$/, "/");
+      const pyodideIndexURL = new URL("assets/", baseURL).href;
+      const pystitchWheelURL = new URL(
+        "pystitch-1.0.0-py3-none-any.whl",
+        baseURL,
+      ).href;
 
-      console.log('[PatternConverterClient] Base URL:', baseURL);
-      console.log('[PatternConverterClient] Pyodide index URL:', pyodideIndexURL);
-      console.log('[PatternConverterClient] Pystitch wheel URL:', pystitchWheelURL);
+      console.log("[PatternConverterClient] Base URL:", baseURL);
+      console.log(
+        "[PatternConverterClient] Pyodide index URL:",
+        pyodideIndexURL,
+      );
+      console.log(
+        "[PatternConverterClient] Pystitch wheel URL:",
+        pystitchWheelURL,
+      );
 
       const initMessage: WorkerMessage = {
-        type: 'INITIALIZE',
+        type: "INITIALIZE",
         pyodideIndexURL,
         pystitchWheelURL,
       };
@@ -155,19 +166,21 @@ class PatternConverterClient {
    */
   async convertPesToPen(file: File): Promise<PesPatternData> {
     // Ensure worker is initialized
-    if (this.state !== 'ready') {
-      throw new Error('Pyodide worker not initialized. Call initialize() first.');
+    if (this.state !== "ready") {
+      throw new Error(
+        "Pyodide worker not initialized. Call initialize() first.",
+      );
     }
 
     if (!this.worker) {
-      throw new Error('Worker not available');
+      throw new Error("Worker not available");
     }
 
     return new Promise<PesPatternData>((resolve, reject) => {
       // Store reference to worker for TypeScript null checking
       const worker = this.worker;
       if (!worker) {
-        reject(new Error('Worker not available'));
+        reject(new Error("Worker not available"));
         return;
       }
 
@@ -175,14 +188,20 @@ class PatternConverterClient {
         const message = event.data;
 
         switch (message.type) {
-          case 'CONVERT_COMPLETE': {
-            worker.removeEventListener('message', handleMessage);
+          case "CONVERT_COMPLETE": {
+            worker.removeEventListener("message", handleMessage);
             // Convert penData array back to Uint8Array
             const penData = new Uint8Array(message.data.penData);
 
             // Decode the PEN data to get stitches for rendering
             const penStitches = decodePenData(penData);
-            console.log('[PatternConverter] Decoded PEN data:', penStitches.stitches.length, 'stitches,', penStitches.colorBlocks.length, 'colors');
+            console.log(
+              "[PatternConverter] Decoded PEN data:",
+              penStitches.stitches.length,
+              "stitches,",
+              penStitches.colorBlocks.length,
+              "colors",
+            );
 
             const result: PesPatternData = {
               ...message.data,
@@ -193,28 +212,28 @@ class PatternConverterClient {
             break;
           }
 
-          case 'CONVERT_ERROR':
-            worker.removeEventListener('message', handleMessage);
+          case "CONVERT_ERROR":
+            worker.removeEventListener("message", handleMessage);
             reject(new Error(message.error));
             break;
         }
       };
 
-      worker.addEventListener('message', handleMessage);
+      worker.addEventListener("message", handleMessage);
 
       // Read file as ArrayBuffer and send to worker
       const reader = new FileReader();
       reader.onload = () => {
         const convertMessage: WorkerMessage = {
-          type: 'CONVERT_PES',
+          type: "CONVERT_PES",
           fileData: reader.result as ArrayBuffer,
           fileName: file.name,
         };
         worker.postMessage(convertMessage);
       };
       reader.onerror = () => {
-        worker.removeEventListener('message', handleMessage);
-        reject(new Error('Failed to read file'));
+        worker.removeEventListener("message", handleMessage);
+        reject(new Error("Failed to read file"));
       };
       reader.readAsArrayBuffer(file);
     });
@@ -226,16 +245,16 @@ class PatternConverterClient {
   private setupWorkerListeners() {
     if (!this.worker) return;
 
-    this.worker.addEventListener('error', (event) => {
-      console.error('[PyodideWorkerClient] Worker error:', event);
-      this.state = 'error';
-      this.error = event.message || 'Worker error';
+    this.worker.addEventListener("error", (event) => {
+      console.error("[PyodideWorkerClient] Worker error:", event);
+      this.state = "error";
+      this.error = event.message || "Worker error";
     });
 
-    this.worker.addEventListener('messageerror', (event) => {
-      console.error('[PyodideWorkerClient] Worker message error:', event);
-      this.state = 'error';
-      this.error = 'Failed to deserialize worker message';
+    this.worker.addEventListener("messageerror", (event) => {
+      console.error("[PyodideWorkerClient] Worker message error:", event);
+      this.state = "error";
+      this.error = "Failed to deserialize worker message";
     });
   }
 
@@ -247,7 +266,7 @@ class PatternConverterClient {
       this.worker.terminate();
       this.worker = null;
     }
-    this.state = 'not_loaded';
+    this.state = "not_loaded";
     this.error = null;
     this.initPromise = null;
     this.progressCallbacks.clear();

src/formats/import/pesImporter.ts

@@ -11,7 +11,6 @@ export async function convertPesToPen(file: File): Promise<PesPatternData> {
   return await patternConverterClient.convertPesToPen(file);
 }
 
-
 /**
  * Get thread color from pattern data
  */

src/formats/import/worker.ts

@@ -1,24 +1,19 @@
-import { loadPyodide, type PyodideInterface } from 'pyodide';
-import {
-  STITCH,
-  MOVE,
-  TRIM,
-  END,
-} from './constants';
-import { encodeStitchesToPen } from '../pen/encoder';
+import { loadPyodide, type PyodideInterface } from "pyodide";
+import { STITCH, MOVE, TRIM, END } from "./constants";
+import { encodeStitchesToPen } from "../pen/encoder";
 
 // Message types from main thread
 export type WorkerMessage =
-  | { type: 'INITIALIZE'; pyodideIndexURL?: string; pystitchWheelURL?: string }
-  | { type: 'CONVERT_PES'; fileData: ArrayBuffer; fileName: string };
+  | { type: "INITIALIZE"; pyodideIndexURL?: string; pystitchWheelURL?: string }
+  | { type: "CONVERT_PES"; fileData: ArrayBuffer; fileName: string };
 
 // Response types to main thread
 export type WorkerResponse =
-  | { type: 'INIT_PROGRESS'; progress: number; step: string }
-  | { type: 'INIT_COMPLETE' }
-  | { type: 'INIT_ERROR'; error: string }
+  | { type: "INIT_PROGRESS"; progress: number; step: string }
+  | { type: "INIT_COMPLETE" }
+  | { type: "INIT_ERROR"; error: string }
   | {
-      type: 'CONVERT_COMPLETE';
+      type: "CONVERT_COMPLETE";
       data: {
         stitches: number[][];
         threads: Array<{
@@ -49,9 +44,9 @@ export type WorkerResponse =
         };
       };
     }
-  | { type: 'CONVERT_ERROR'; error: string };
+  | { type: "CONVERT_ERROR"; error: string };
 
-console.log('[PatternConverterWorker] Worker script loaded');
+console.log("[PatternConverterWorker] Worker script loaded");
 
 let pyodide: PyodideInterface | null = null;
 let isInitializing = false;
@@ -67,79 +62,82 @@ const jsEmbConstants = {
 /**
  * Initialize Pyodide with progress tracking
  */
-async function initializePyodide(pyodideIndexURL?: string, pystitchWheelURL?: string) {
+async function initializePyodide(
+  pyodideIndexURL?: string,
+  pystitchWheelURL?: string,
+) {
   if (pyodide) {
     return; // Already initialized
   }
 
   if (isInitializing) {
-    throw new Error('Initialization already in progress');
+    throw new Error("Initialization already in progress");
   }
 
   isInitializing = true;
 
   try {
     self.postMessage({
-      type: 'INIT_PROGRESS',
+      type: "INIT_PROGRESS",
       progress: 0,
-      step: 'Starting initialization...',
+      step: "Starting initialization...",
     } as WorkerResponse);
 
-    console.log('[PyodideWorker] Loading Pyodide runtime...');
+    console.log("[PyodideWorker] Loading Pyodide runtime...");
 
     self.postMessage({
-      type: 'INIT_PROGRESS',
+      type: "INIT_PROGRESS",
       progress: 10,
-      step: 'Loading Python runtime...',
+      step: "Loading Python runtime...",
     } as WorkerResponse);
 
     // Load Pyodide runtime
     // Use provided URL or default to /assets/
-    const indexURL = pyodideIndexURL || '/assets/';
-    console.log('[PyodideWorker] Pyodide index URL:', indexURL);
+    const indexURL = pyodideIndexURL || "/assets/";
+    console.log("[PyodideWorker] Pyodide index URL:", indexURL);
 
     pyodide = await loadPyodide({
       indexURL: indexURL,
     });
 
-    console.log('[PyodideWorker] Pyodide runtime loaded');
+    console.log("[PyodideWorker] Pyodide runtime loaded");
 
     self.postMessage({
-      type: 'INIT_PROGRESS',
+      type: "INIT_PROGRESS",
       progress: 70,
-      step: 'Python runtime loaded',
+      step: "Python runtime loaded",
     } as WorkerResponse);
 
     self.postMessage({
-      type: 'INIT_PROGRESS',
+      type: "INIT_PROGRESS",
       progress: 75,
-      step: 'Loading pystitch library...',
+      step: "Loading pystitch library...",
     } as WorkerResponse);
 
     // Load pystitch wheel
     // Use provided URL or default
-    const wheelURL = pystitchWheelURL || '/pystitch-1.0.0-py3-none-any.whl';
-    console.log('[PyodideWorker] Pystitch wheel URL:', wheelURL);
+    const wheelURL = pystitchWheelURL || "/pystitch-1.0.0-py3-none-any.whl";
+    console.log("[PyodideWorker] Pystitch wheel URL:", wheelURL);
 
     await pyodide.loadPackage(wheelURL);
 
-    console.log('[PyodideWorker] pystitch library loaded');
+    console.log("[PyodideWorker] pystitch library loaded");
 
     self.postMessage({
-      type: 'INIT_PROGRESS',
+      type: "INIT_PROGRESS",
       progress: 100,
-      step: 'Ready!',
+      step: "Ready!",
     } as WorkerResponse);
 
     self.postMessage({
-      type: 'INIT_COMPLETE',
+      type: "INIT_COMPLETE",
     } as WorkerResponse);
   } catch (err) {
-    const errorMsg = err instanceof Error ? err.message : 'Unknown error';
-    console.error('[PyodideWorker] Initialization error:', err);
+    const errorMsg = err instanceof Error ? err.message : "Unknown error";
+    console.error("[PyodideWorker] Initialization error:", err);
 
     self.postMessage({
-      type: 'INIT_ERROR',
+      type: "INIT_ERROR",
       error: errorMsg,
     } as WorkerResponse);
 
@@ -154,18 +152,18 @@ async function initializePyodide(pyodideIndexURL?: string, pystitchWheelURL?: st
  */
 async function convertPesToPen(fileData: ArrayBuffer) {
   if (!pyodide) {
-    throw new Error('Pyodide not initialized');
+    throw new Error("Pyodide not initialized");
   }
 
   try {
     // Register our JavaScript constants module for Python to import
-    pyodide.registerJsModule('js_emb_constants', jsEmbConstants);
+    pyodide.registerJsModule("js_emb_constants", jsEmbConstants);
 
     // Convert to Uint8Array
     const uint8Array = new Uint8Array(fileData);
 
     // Write file to Pyodide virtual filesystem
-    const tempFileName = '/tmp/pattern.pes';
+    const tempFileName = "/tmp/pattern.pes";
     pyodide.FS.writeFile(tempFileName, uint8Array);
 
     // Read the pattern using PyStitch (same logic as original converter)
@@ -277,11 +275,11 @@ for i, stitch in enumerate(pattern.stitches):
 
     // Extract stitches and validate
     const stitches: number[][] = Array.from(
-      data.stitches as ArrayLike<ArrayLike<number>>
+      data.stitches as ArrayLike<ArrayLike<number>>,
     ).map((stitch) => Array.from(stitch));
 
     if (!stitches || stitches.length === 0) {
-      throw new Error('Invalid PES file or no stitches found');
+      throw new Error("Invalid PES file or no stitches found");
     }
 
     // Extract thread data - preserve null values for unavailable metadata
@@ -301,27 +299,27 @@ for i, stitch in enumerate(pattern.stitches):
         catalogNum !== undefined &&
         catalogNum !== null &&
         catalogNum !== -1 &&
-        catalogNum !== '-1' &&
-        catalogNum !== ''
+        catalogNum !== "-1" &&
+        catalogNum !== ""
           ? String(catalogNum)
           : null;
 
       return {
         color: thread.color ?? 0,
-        hex: thread.hex || '#000000',
+        hex: thread.hex || "#000000",
         catalogNumber: normalizedCatalog,
-        brand: thread.brand && thread.brand !== '' ? thread.brand : null,
+        brand: thread.brand && thread.brand !== "" ? thread.brand : null,
         description:
-          thread.description && thread.description !== ''
+          thread.description && thread.description !== ""
             ? thread.description
             : null,
-        chart: thread.chart && thread.chart !== '' ? thread.chart : null,
+        chart: thread.chart && thread.chart !== "" ? thread.chart : null,
       };
     });
 
     // Encode stitches to PEN format using the extracted encoder
-    console.log('[patternConverter] Encoding stitches to PEN format...');
-    console.log('  - Input stitches:', stitches);
+    console.log("[patternConverter] Encoding stitches to PEN format...");
+    console.log("  - Input stitches:", stitches);
     const { penBytes: penStitches, bounds } = encodeStitchesToPen(stitches);
     const { minX, maxX, minY, maxY } = bounds;
 
@@ -352,13 +350,13 @@ for i, stitch in enumerate(pattern.stitches):
         description: string | null;
         chart: string | null;
         threadIndices: number[];
-      }>
+      }>,
     );
 
     // Calculate PEN stitch count (should match what machine will count)
     const penStitchCount = penStitches.length / 4;
 
-    console.log('[patternConverter] PEN encoding complete:');
+    console.log("[patternConverter] PEN encoding complete:");
     console.log(`  - PyStitch stitches: ${stitches.length}`);
     console.log(`  - PEN bytes: ${penStitches.length}`);
     console.log(`  - PEN stitches (bytes/4): ${penStitchCount}`);
@@ -366,7 +364,7 @@ for i, stitch in enumerate(pattern.stitches):
 
     // Post result back to main thread
     self.postMessage({
-      type: 'CONVERT_COMPLETE',
+      type: "CONVERT_COMPLETE",
       data: {
         stitches,
         threads,
@@ -383,11 +381,11 @@ for i, stitch in enumerate(pattern.stitches):
       },
     } as WorkerResponse);
   } catch (err) {
-    const errorMsg = err instanceof Error ? err.message : 'Unknown error';
-    console.error('[PyodideWorker] Conversion error:', err);
+    const errorMsg = err instanceof Error ? err.message : "Unknown error";
+    console.error("[PyodideWorker] Conversion error:", err);
 
     self.postMessage({
-      type: 'CONVERT_ERROR',
+      type: "CONVERT_ERROR",
       error: errorMsg,
     } as WorkerResponse);
 
@@ -398,26 +396,32 @@ for i, stitch in enumerate(pattern.stitches):
 // Handle messages from main thread
 self.onmessage = async (event: MessageEvent<WorkerMessage>) => {
   const message = event.data;
-  console.log('[PatternConverterWorker] Received message:', message.type);
+  console.log("[PatternConverterWorker] Received message:", message.type);
 
   try {
     switch (message.type) {
-      case 'INITIALIZE':
-        console.log('[PatternConverterWorker] Starting initialization...');
-        await initializePyodide(message.pyodideIndexURL, message.pystitchWheelURL);
+      case "INITIALIZE":
+        console.log("[PatternConverterWorker] Starting initialization...");
+        await initializePyodide(
+          message.pyodideIndexURL,
+          message.pystitchWheelURL,
+        );
         break;
 
-      case 'CONVERT_PES':
-        console.log('[PatternConverterWorker] Starting PES conversion...');
+      case "CONVERT_PES":
+        console.log("[PatternConverterWorker] Starting PES conversion...");
         await convertPesToPen(message.fileData);
         break;
 
       default:
-        console.error('[PatternConverterWorker] Unknown message type:', message);
+        console.error(
+          "[PatternConverterWorker] Unknown message type:",
+          message,
+        );
     }
   } catch (err) {
-    console.error('[PatternConverterWorker] Error handling message:', err);
+    console.error("[PatternConverterWorker] Error handling message:", err);
   }
 };
 
-console.log('[PatternConverterWorker] Message handler registered');
+console.log("[PatternConverterWorker] Message handler registered");

src/formats/pen/decoder.ts

@@ -5,7 +5,7 @@
  * The PEN format uses absolute coordinates shifted left by 3 bits, with flags in the low 3 bits.
  */
 
-import type { DecodedPenStitch, DecodedPenData, PenColorBlock } from './types';
+import type { DecodedPenStitch, DecodedPenData, PenColorBlock } from "./types";
 
 // PEN format flags
 const PEN_FEED_DATA = 0x01; // Bit 0: Jump stitch (move without stitching)
@@ -22,7 +22,7 @@ const PEN_DATA_END = 0x05;  // Last stitch of entire pattern
  */
 export function decodePenStitch(
   bytes: Uint8Array | number[],
-  offset: number
+  offset: number,
 ): DecodedPenStitch {
   const xLow = bytes[offset];
   const xHigh = bytes[offset + 1];
@@ -37,14 +37,14 @@ export function decodePenStitch(
   const yFlags = yRaw & 0x07;
 
   // Clear flags and shift right to get actual coordinates
-  const xClean = xRaw & 0xFFF8;
-  const yClean = yRaw & 0xFFF8;
+  const xClean = xRaw & 0xfff8;
+  const yClean = yRaw & 0xfff8;
 
   // Convert to signed 16-bit
   let xSigned = xClean;
   let ySigned = yClean;
-  if (xSigned > 0x7FFF) xSigned = xSigned - 0x10000;
-  if (ySigned > 0x7FFF) ySigned = ySigned - 0x10000;
+  if (xSigned > 0x7fff) xSigned = xSigned - 0x10000;
+  if (ySigned > 0x7fff) ySigned = ySigned - 0x10000;
 
   // Shift right by 3 to get actual coordinates
   const x = xSigned >> 3;
@@ -76,9 +76,13 @@ export function decodePenStitch(
  * @param bytes PEN format byte array
  * @returns Array of decoded stitches
  */
-export function decodeAllPenStitches(bytes: Uint8Array | number[]): DecodedPenStitch[] {
+export function decodeAllPenStitches(
+  bytes: Uint8Array | number[],
+): DecodedPenStitch[] {
   if (bytes.length < 4 || bytes.length % 4 !== 0) {
-    throw new Error(`Invalid PEN data size: ${bytes.length} bytes (must be multiple of 4)`);
+    throw new Error(
+      `Invalid PEN data size: ${bytes.length} bytes (must be multiple of 4)`,
+    );
   }
 
   const stitches: DecodedPenStitch[] = [];
@@ -169,9 +173,15 @@ export function decodePenData(data: Uint8Array): DecodedPenData {
  * @param stitchIndex Index of the stitch
  * @returns Color index, or -1 if not found
  */
-export function getStitchColor(penData: DecodedPenData, stitchIndex: number): number {
+export function getStitchColor(
+  penData: DecodedPenData,
+  stitchIndex: number,
+): number {
   for (const block of penData.colorBlocks) {
-    if (stitchIndex >= block.startStitchIndex && stitchIndex <= block.endStitchIndex) {
+    if (
+      stitchIndex >= block.startStitchIndex &&
+      stitchIndex <= block.endStitchIndex
+    ) {
       return block.colorIndex;
     }
   }

src/formats/pen/encoder.test.ts

@@ -1,51 +1,51 @@
-import { describe, it, expect } from 'vitest';
+import { describe, it, expect } from "vitest";
 import {
   encodeStitchPosition,
   calculateLockDirection,
   generateLockStitches,
   encodeStitchesToPen,
-  LOCK_STITCH_JUMP_SIZE
-} from './encoder';
-import { decodeAllPenStitches } from './decoder';
-import { STITCH, MOVE, TRIM, END } from '../import/constants';
+  LOCK_STITCH_JUMP_SIZE,
+} from "./encoder";
+import { decodeAllPenStitches } from "./decoder";
+import { STITCH, MOVE, TRIM, END } from "../import/constants";
 
 // PEN format flag constants for testing
 const PEN_FEED_DATA = 0x01;
 const PEN_CUT_DATA = 0x02;
 
-describe('encodeStitchPosition', () => {
-  it('should encode position (0, 0) correctly', () => {
+describe("encodeStitchPosition", () => {
+  it("should encode position (0, 0) correctly", () => {
     const result = encodeStitchPosition(0, 0);
     expect(result).toEqual([0x00, 0x00, 0x00, 0x00]);
   });
 
-  it('should shift coordinates left by 3 bits', () => {
+  it("should shift coordinates left by 3 bits", () => {
     // Position (1, 1) should become (8, 8) after shifting
     const result = encodeStitchPosition(1, 1);
     expect(result).toEqual([0x08, 0x00, 0x08, 0x00]);
   });
 
-  it('should handle negative coordinates', () => {
+  it("should handle negative coordinates", () => {
     // -1 in 16-bit signed = 0xFFFF, shifted left 3 = 0xFFF8
     const result = encodeStitchPosition(-1, -1);
-    expect(result).toEqual([0xF8, 0xFF, 0xF8, 0xFF]);
+    expect(result).toEqual([0xf8, 0xff, 0xf8, 0xff]);
   });
 
-  it('should encode multi-byte coordinates correctly', () => {
+  it("should encode multi-byte coordinates correctly", () => {
     // Position (128, 0) -> shifted = 1024 = 0x0400
     const result = encodeStitchPosition(128, 0);
     expect(result).toEqual([0x00, 0x04, 0x00, 0x00]);
   });
 
-  it('should round fractional coordinates', () => {
+  it("should round fractional coordinates", () => {
     const result = encodeStitchPosition(1.5, 2.4);
     // 2 << 3 = 16, 2 << 3 = 16
     expect(result).toEqual([0x10, 0x00, 0x10, 0x00]);
   });
 });
 
-describe('calculateLockDirection', () => {
-  it('should look ahead for forward direction', () => {
+describe("calculateLockDirection", () => {
+  it("should look ahead for forward direction", () => {
     const stitches = [
       [0, 0, STITCH, 0],
       [10, 0, STITCH, 0],
@@ -62,7 +62,7 @@ describe('calculateLockDirection', () => {
     expect(magnitude).toBeCloseTo(8.0, 1);
   });
 
-  it('should look backward for backward direction', () => {
+  it("should look backward for backward direction", () => {
     const stitches = [
       [0, 0, STITCH, 0],
       [10, 0, STITCH, 0],
@@ -79,7 +79,7 @@ describe('calculateLockDirection', () => {
     expect(magnitude).toBeCloseTo(8.0, 1);
   });
 
-  it('should skip MOVE stitches when accumulating', () => {
+  it("should skip MOVE stitches when accumulating", () => {
     const stitches = [
       [0, 0, STITCH, 0],
       [5, 0, MOVE, 0], // Should be skipped
@@ -93,10 +93,8 @@ describe('calculateLockDirection', () => {
     expect(result.dirX).toBeGreaterThan(0);
   });
 
-  it('should return fallback diagonal for empty or short stitch sequences', () => {
-    const stitches = [
-      [0, 0, STITCH, 0],
-    ];
+  it("should return fallback diagonal for empty or short stitch sequences", () => {
+    const stitches = [[0, 0, STITCH, 0]];
 
     const result = calculateLockDirection(stitches, 0, true);
 
@@ -106,7 +104,7 @@ describe('calculateLockDirection', () => {
     expect(result.dirY).toBeCloseTo(expectedMag, 1);
   });
 
-  it('should normalize accumulated vector to magnitude 8.0', () => {
+  it("should normalize accumulated vector to magnitude 8.0", () => {
     const stitches = [
       [0, 0, STITCH, 0],
       [3, 4, STITCH, 0], // Distance = 5
@@ -124,7 +122,7 @@ describe('calculateLockDirection', () => {
     expect(magnitude).toBeCloseTo(8.0, 1);
   });
 
-  it('should stop accumulating after reaching target length', () => {
+  it("should stop accumulating after reaching target length", () => {
     // Create a long chain of stitches
     const stitches = [
       [0, 0, STITCH, 0],
@@ -144,13 +142,13 @@ describe('calculateLockDirection', () => {
   });
 });
 
-describe('generateLockStitches', () => {
-  it('should generate 8 lock stitches (32 bytes)', () => {
+describe("generateLockStitches", () => {
+  it("should generate 8 lock stitches (32 bytes)", () => {
     const result = generateLockStitches(0, 0, 8.0, 0);
     expect(result.length).toBe(32); // 8 stitches * 4 bytes each
   });
 
-  it('should alternate between +dir and -dir', () => {
+  it("should alternate between +dir and -dir", () => {
     const result = generateLockStitches(0, 0, 8.0, 0);
     expect(result.length).toBe(32); // 8 stitches * 4 bytes
 
@@ -159,7 +157,7 @@ describe('generateLockStitches', () => {
     expect(result2.length).toBe(32);
   });
 
-  it('should rotate stitches in the given direction', () => {
+  it("should rotate stitches in the given direction", () => {
     // Direction pointing right (8, 0)
     const result = generateLockStitches(0, 0, 8.0, 0);
 
@@ -176,8 +174,8 @@ describe('generateLockStitches', () => {
   });
 });
 
-describe('encodeStitchesToPen', () => {
-  it('should encode a simple stitch sequence', () => {
+describe("encodeStitchesToPen", () => {
+  it("should encode a simple stitch sequence", () => {
     const stitches = [
       [0, 0, STITCH, 0],
       [10, 0, STITCH, 0],
@@ -192,7 +190,7 @@ describe('encodeStitchesToPen', () => {
     expect(result.bounds.maxX).toBe(20);
   });
 
-  it('should track bounds correctly', () => {
+  it("should track bounds correctly", () => {
     const stitches = [
       [10, 20, STITCH, 0],
       [-5, 30, STITCH, 0],
@@ -208,7 +206,7 @@ describe('encodeStitchesToPen', () => {
     expect(result.bounds.maxY).toBe(30);
   });
 
-  it('should mark the last stitch with DATA_END flag', () => {
+  it("should mark the last stitch with DATA_END flag", () => {
     const stitches = [
       [0, 0, STITCH, 0],
       [10, 0, END, 0],
@@ -222,7 +220,7 @@ describe('encodeStitchesToPen', () => {
     expect(xLow & 0x07).toBe(0x05); // DATA_END flag
   });
 
-  it('should handle color changes with lock stitches', () => {
+  it("should handle color changes with lock stitches", () => {
     const stitches = [
       [0, 0, STITCH, 0], // Color 0
       [10, 0, STITCH, 0], // Color 0
@@ -246,7 +244,7 @@ describe('encodeStitchesToPen', () => {
     expect(result.penBytes.length).toBeGreaterThan(90); // Should have many bytes from lock stitches
   });
 
-  it('should encode color change sequence in correct order', () => {
+  it("should encode color change sequence in correct order", () => {
     // Test the exact sequence of operations for a color change
     const stitches = [
       [0, 0, STITCH, 0], // Color 0
@@ -325,7 +323,7 @@ describe('encodeStitchesToPen', () => {
     expect(decoded[idx].isDataEnd).toBe(true);
   });
 
-  it('should encode color change with jump in correct order', () => {
+  it("should encode color change with jump in correct order", () => {
     // Test color change when next color is at a different position
     const stitches = [
       [0, 0, STITCH, 0], // Color 0
@@ -372,7 +370,7 @@ describe('encodeStitchesToPen', () => {
     expect(decoded[idx].y).toBe(10);
   });
 
-  it('should encode color change followed by explicit JUMP in correct order', () => {
+  it("should encode color change followed by explicit JUMP in correct order", () => {
     // Test when PES data has a JUMP stitch immediately after color change
     // This is a common pattern: color change, then jump to new location
     const stitches = [
@@ -443,7 +441,7 @@ describe('encodeStitchesToPen', () => {
     expect(decoded[idx].isDataEnd).toBe(true);
   });
 
-  it('should handle long jumps with lock stitches and cut in correct order', () => {
+  it("should handle long jumps with lock stitches and cut in correct order", () => {
     // Test the exact sequence for a long jump (distance > 50)
     const stitches = [
       [0, 0, STITCH, 0],
@@ -508,7 +506,7 @@ describe('encodeStitchesToPen', () => {
     expect(decoded[idx].isDataEnd).toBe(true);
   });
 
-  it('should encode MOVE flag for jump stitches', () => {
+  it("should encode MOVE flag for jump stitches", () => {
     const stitches = [
       [0, 0, STITCH, 0],
       [10, 0, MOVE, 0], // Short jump (no lock stitches)
@@ -525,7 +523,7 @@ describe('encodeStitchesToPen', () => {
     expect(yLow & 0x01).toBe(0x01); // FEED_DATA flag
   });
 
-  it('should not include MOVE stitches in bounds calculation', () => {
+  it("should not include MOVE stitches in bounds calculation", () => {
     const stitches = [
       [0, 0, STITCH, 0],
       [100, 100, MOVE, 0], // Jump - should not affect bounds
@@ -542,7 +540,7 @@ describe('encodeStitchesToPen', () => {
     expect(result.bounds.maxY).toBe(20);
   });
 
-  it('should handle TRIM flag correctly', () => {
+  it("should handle TRIM flag correctly", () => {
     const stitches = [
       [0, 0, STITCH, 0],
       [10, 0, TRIM, 0],
@@ -574,7 +572,7 @@ describe('encodeStitchesToPen', () => {
     expect(decoded[idx].isDataEnd).toBe(true);
   });
 
-  it('should handle empty stitch array', () => {
+  it("should handle empty stitch array", () => {
     const stitches: number[][] = [];
 
     const result = encodeStitchesToPen(stitches);
@@ -586,10 +584,8 @@ describe('encodeStitchesToPen', () => {
     expect(result.bounds.maxY).toBe(0);
   });
 
-  it('should handle single stitch', () => {
-    const stitches = [
-      [5, 10, END, 0],
-    ];
+  it("should handle single stitch", () => {
+    const stitches = [[5, 10, END, 0]];
 
     const result = encodeStitchesToPen(stitches);
 
@@ -601,7 +597,7 @@ describe('encodeStitchesToPen', () => {
     // END stitches update bounds (they're not MOVE stitches)
   });
 
-  it('should add DATA_END flag to last stitch even without END flag in input', () => {
+  it("should add DATA_END flag to last stitch even without END flag in input", () => {
     // Test that the encoder automatically marks the last stitch with DATA_END
     // even if the input stitches don't have an END flag
     const stitches = [
@@ -623,7 +619,7 @@ describe('encodeStitchesToPen', () => {
     expect(decoded[10].y).toBe(0);
   });
 
-  it('should add DATA_END flag when input has explicit END flag', () => {
+  it("should add DATA_END flag when input has explicit END flag", () => {
     // Verify that END flag in input also results in DATA_END flag in output
     const stitches = [
       [0, 0, STITCH, 0],
@@ -640,7 +636,7 @@ describe('encodeStitchesToPen', () => {
     expect(decoded[10].y).toBe(0);
   });
 
-  it('should add lock stitches at the very start of the pattern', () => {
+  it("should add lock stitches at the very start of the pattern", () => {
     // Matching C# behavior: Nuihajime_TomeDataPlus is called when counter <= 2
     // This adds starting lock stitches to secure the thread at pattern start
     const stitches = [

src/formats/pen/encoder.ts

@@ -5,7 +5,7 @@
  * The PEN format uses absolute coordinates shifted left by 3 bits, with flags in the low 3 bits.
  */
 
-import { MOVE, TRIM, END } from '../import/constants';
+import { MOVE, TRIM, END } from "../import/constants";
 
 // PEN format flags for Brother machines
 const PEN_FEED_DATA = 0x01; // Bit 0: Jump stitch (move without stitching)
@@ -45,12 +45,7 @@ export function encodeStitchPosition(x: number, y: number): number[] {
   const xEnc = (Math.round(x) << 3) & 0xffff;
   const yEnc = (Math.round(y) << 3) & 0xffff;
 
-  return [
-    xEnc & 0xff,
-    (xEnc >> 8) & 0xff,
-    yEnc & 0xff,
-    (yEnc >> 8) & 0xff
-  ];
+  return [xEnc & 0xff, (xEnc >> 8) & 0xff, yEnc & 0xff, (yEnc >> 8) & 0xff];
 }
 
 /**
@@ -70,7 +65,7 @@ export function encodeStitchPosition(x: number, y: number): number[] {
 export function calculateLockDirection(
   stitches: number[][],
   currentIndex: number,
-  lookAhead: boolean
+  lookAhead: boolean,
 ): { dirX: number; dirY: number } {
   let accumulatedX = 0;
   let accumulatedY = 0;
@@ -84,7 +79,7 @@ export function calculateLockDirection(
     : Math.min(MAX_POINTS, currentIndex);
 
   for (let i = 0; i < maxIterations; i++) {
-    const idx = currentIndex + (step * (i + 1));
+    const idx = currentIndex + step * (i + 1);
     if (idx < 0 || idx >= stitches.length) break;
 
     const stitch = stitches[idx];
@@ -94,13 +89,17 @@ export function calculateLockDirection(
     if ((cmd & MOVE) !== 0) continue;
 
     // Accumulate relative coordinates
-    const deltaX = Math.round(stitch[0]) - Math.round(stitches[currentIndex][0]);
-    const deltaY = Math.round(stitch[1]) - Math.round(stitches[currentIndex][1]);
+    const deltaX =
+      Math.round(stitch[0]) - Math.round(stitches[currentIndex][0]);
+    const deltaY =
+      Math.round(stitch[1]) - Math.round(stitches[currentIndex][1]);
 
     accumulatedX += deltaX;
     accumulatedY += deltaY;
 
-    const length = Math.sqrt(accumulatedX * accumulatedX + accumulatedY * accumulatedY);
+    const length = Math.sqrt(
+      accumulatedX * accumulatedX + accumulatedY * accumulatedY,
+    );
 
     // Track the maximum length vector seen so far
     if (length > maxLength) {
@@ -113,7 +112,7 @@ export function calculateLockDirection(
     if (length >= TARGET_LENGTH) {
       return {
         dirX: (accumulatedX * 8.0) / length,
-        dirY: (accumulatedY * 8.0) / length
+        dirY: (accumulatedY * 8.0) / length,
       };
     }
   }
@@ -122,7 +121,7 @@ export function calculateLockDirection(
   if (maxLength > 0.1) {
     return {
       dirX: (bestX * 8.0) / maxLength,
-      dirY: (bestY * 8.0) / maxLength
+      dirY: (bestY * 8.0) / maxLength,
     };
   }
 
@@ -140,7 +139,12 @@ export function calculateLockDirection(
  * @param dirY Direction Y component (magnitude ~8.0)
  * @returns Array of PEN bytes for lock stitches (32 bytes = 8 stitches * 4 bytes)
  */
-export function generateLockStitches(x: number, y: number, dirX: number, dirY: number): number[] {
+export function generateLockStitches(
+  x: number,
+  y: number,
+  dirX: number,
+  dirY: number,
+): number[] {
   const lockBytes: number[] = [];
 
   // Generate 8 lock stitches in alternating pattern
@@ -153,7 +157,7 @@ export function generateLockStitches(x: number, y: number, dirX: number, dirY: n
   // Generate 8 stitches alternating between forward and backward
   for (let i = 0; i < 8; i++) {
     // Alternate between forward (+) and backward (-) direction
-    const sign = (i % 2 === 0) ? 1 : -1;
+    const sign = i % 2 === 0 ? 1 : -1;
     const xAdd = scaledDirX * sign;
     const yAdd = scaledDirY * sign;
     lockBytes.push(...encodeStitchPosition(x + xAdd, y + yAdd));
@@ -181,7 +185,6 @@ export function encodeStitchesToPen(stitches: number[][]): PenEncodingResult {
   let prevX = 0;
   let prevY = 0;
 
-
   for (let i = 0; i < stitches.length; i++) {
     const stitch = stitches[i];
     const absX = Math.round(stitch[0]);
@@ -209,7 +212,9 @@ export function encodeStitchesToPen(stitches: number[][]): PenEncodingResult {
         // Loop B: End/Cut Vector - Look BACKWARD at previous stitches
         // This hides the knot inside the embroidery we just finished
         const finishDir = calculateLockDirection(stitches, i - 1, false);
-        penStitches.push(...generateLockStitches(prevX, prevY, finishDir.dirX, finishDir.dirY));
+        penStitches.push(
+          ...generateLockStitches(prevX, prevY, finishDir.dirX, finishDir.dirY),
+        );
 
         // Encode jump with both FEED and CUT flags
         const xEncoded = (absX << 3) & 0xffff;
@@ -221,14 +226,16 @@ export function encodeStitchesToPen(stitches: number[][]): PenEncodingResult {
           xEncoded & 0xff,
           (xEncoded >> 8) & 0xff,
           yEncoded & 0xff,
-          (yEncoded >> 8) & 0xff
+          (yEncoded >> 8) & 0xff,
         );
 
         // Add starting lock stitches at new position
         // Loop A: Jump/Entry Vector - Look FORWARD at upcoming stitches
         // This hides the knot under the stitches we're about to make
         const startDir = calculateLockDirection(stitches, i, true);
-        penStitches.push(...generateLockStitches(absX, absY, startDir.dirX, startDir.dirY));
+        penStitches.push(
+          ...generateLockStitches(absX, absY, startDir.dirX, startDir.dirY),
+        );
 
         // Update position and continue
         prevX = absX;
@@ -258,7 +265,10 @@ export function encodeStitchesToPen(stitches: number[][]): PenEncodingResult {
     // Check for color change by comparing stitch color index
     const nextStitch = stitches[i + 1];
     const nextStitchColor = nextStitch?.[3];
-    const isColorChange = !isLastStitch && nextStitchColor !== undefined && nextStitchColor !== stitchColor;
+    const isColorChange =
+      !isLastStitch &&
+      nextStitchColor !== undefined &&
+      nextStitchColor !== stitchColor;
 
     // Mark the very last stitch of the pattern with DATA_END
     if (isLastStitch) {
@@ -270,7 +280,7 @@ export function encodeStitchesToPen(stitches: number[][]): PenEncodingResult {
       xEncoded & 0xff,
       (xEncoded >> 8) & 0xff,
       yEncoded & 0xff,
-      (yEncoded >> 8) & 0xff
+      (yEncoded >> 8) & 0xff,
     );
 
     // Update position for next iteration
@@ -283,7 +293,9 @@ export function encodeStitchesToPen(stitches: number[][]): PenEncodingResult {
 
       // Calculate direction for starting locks (look forward into the pattern)
       const startDir = calculateLockDirection(stitches, i, true);
-      penStitches.push(...generateLockStitches(absX, absY, startDir.dirX, startDir.dirY));
+      penStitches.push(
+        ...generateLockStitches(absX, absY, startDir.dirX, startDir.dirY),
+      );
     }
 
     // Handle color change: finishing lock, COLOR_END+CUT, jump, starting lock
@@ -297,7 +309,9 @@ export function encodeStitchesToPen(stitches: number[][]): PenEncodingResult {
       // Loop C: Color Change Vector - Look FORWARD at the stop event data
       // This aligns the knot with the stop command's data block for correct tension
       const finishDir = calculateLockDirection(stitches, i, true);
-      penStitches.push(...generateLockStitches(absX, absY, finishDir.dirX, finishDir.dirY));
+      penStitches.push(
+        ...generateLockStitches(absX, absY, finishDir.dirX, finishDir.dirY),
+      );
 
       // Step 2: Add COLOR_END + CUT command at CURRENT position (same stitch!)
       // This is where the machine pauses and waits for the user to change thread color
@@ -313,7 +327,7 @@ export function encodeStitchesToPen(stitches: number[][]): PenEncodingResult {
         colorEndCutXEncoded & 0xff,
         (colorEndCutXEncoded >> 8) & 0xff,
         colorEndCutYEncoded & 0xff,
-        (colorEndCutYEncoded >> 8) & 0xff
+        (colorEndCutYEncoded >> 8) & 0xff,
       );
 
       // Machine pauses here for color change
@@ -339,7 +353,7 @@ export function encodeStitchesToPen(stitches: number[][]): PenEncodingResult {
           jumpXEncoded & 0xff,
           (jumpXEncoded >> 8) & 0xff,
           jumpYEncoded & 0xff,
-          (jumpYEncoded >> 8) & 0xff
+          (jumpYEncoded >> 8) & 0xff,
         );
       }
 
@@ -347,8 +361,14 @@ export function encodeStitchesToPen(stitches: number[][]): PenEncodingResult {
       // Loop A: Jump/Entry Vector - Look FORWARD at upcoming stitches in new color
       // This hides the knot under the stitches we're about to make
       const nextStitchIdx = nextIsJump ? i + 2 : i + 1;
-      const startDir = calculateLockDirection(stitches, nextStitchIdx < stitches.length ? nextStitchIdx : i, true);
-      penStitches.push(...generateLockStitches(jumpToX, jumpToY, startDir.dirX, startDir.dirY));
+      const startDir = calculateLockDirection(
+        stitches,
+        nextStitchIdx < stitches.length ? nextStitchIdx : i,
+        true,
+      );
+      penStitches.push(
+        ...generateLockStitches(jumpToX, jumpToY, startDir.dirX, startDir.dirY),
+      );
 
       // Update position
       prevX = jumpToX;

src/main.tsx

@@ -1,10 +1,10 @@
-import { StrictMode } from 'react'
-import { createRoot } from 'react-dom/client'
-import './index.css'
-import App from './App.tsx'
+import { StrictMode } from "react";
+import { createRoot } from "react-dom/client";
+import "./index.css";
+import App from "./App.tsx";
 
-createRoot(document.getElementById('root')!).render(
+createRoot(document.getElementById("root")!).render(
   <StrictMode>
     <App />
   </StrictMode>,
-)
+);

src/platform/browser/BrowserFileService.ts

@@ -1,4 +1,4 @@
-import type { IFileService } from '../interfaces/IFileService';
+import type { IFileService } from "../interfaces/IFileService";
 
 /**
  * Browser implementation of file service using HTML input elements
@@ -6,8 +6,8 @@ import type { IFileService } from '../interfaces/IFileService';
 export class BrowserFileService implements IFileService {
   async openFileDialog(options: { accept: string }): Promise<File | null> {
     return new Promise((resolve) => {
-      const input = document.createElement('input');
-      input.type = 'file';
+      const input = document.createElement("input");
+      input.type = "file";
       input.accept = options.accept;
 
       input.onchange = (e) => {
@@ -25,7 +25,7 @@ export class BrowserFileService implements IFileService {
 
   async saveFileDialog(): Promise<void> {
     // No-op in browser - could implement download if needed in the future
-    console.warn('saveFileDialog not implemented in browser');
+    console.warn("saveFileDialog not implemented in browser");
   }
 
   hasNativeDialogs(): boolean {

src/platform/browser/BrowserStorageService.ts

@@ -1,6 +1,9 @@
-import { PatternCacheService } from '../../services/PatternCacheService';
-import type { IStorageService, ICachedPattern } from '../interfaces/IStorageService';
-import type { PesPatternData } from '../../formats/import/pesImporter';
+import { PatternCacheService } from "../../services/PatternCacheService";
+import type {
+  IStorageService,
+  ICachedPattern,
+} from "../interfaces/IStorageService";
+import type { PesPatternData } from "../../formats/import/pesImporter";
 
 /**
  * Browser implementation of storage service using localStorage
@@ -11,7 +14,7 @@ export class BrowserStorageService implements IStorageService {
     uuid: string,
     pesData: PesPatternData,
     fileName: string,
-    patternOffset?: { x: number; y: number }
+    patternOffset?: { x: number; y: number },
   ): Promise<void> {
     PatternCacheService.savePattern(uuid, pesData, fileName, patternOffset);
   }
@@ -36,7 +39,12 @@ export class BrowserStorageService implements IStorageService {
     PatternCacheService.clearCache();
   }
 
-  async getCacheInfo(): Promise<{ hasCache: boolean; fileName?: string; uuid?: string; age?: number }> {
+  async getCacheInfo(): Promise<{
+    hasCache: boolean;
+    fileName?: string;
+    uuid?: string;
+    age?: number;
+  }> {
     return PatternCacheService.getCacheInfo();
   }
 }

src/platform/electron/ElectronFileService.ts

@@ -1,4 +1,4 @@
-import type { IFileService } from '../interfaces/IFileService';
+import type { IFileService } from "../interfaces/IFileService";
 
 /**
  * Electron implementation of file service using native dialogs via IPC
@@ -6,14 +6,17 @@ import type { IFileService } from '../interfaces/IFileService';
 export class ElectronFileService implements IFileService {
   async openFileDialog(): Promise<File | null> {
     if (!window.electronAPI) {
-      throw new Error('Electron API not available');
+      throw new Error("Electron API not available");
     }
 
     try {
-      const result = await window.electronAPI.invoke<{ filePath: string; fileName: string } | null>('dialog:openFile', {
+      const result = await window.electronAPI.invoke<{
+        filePath: string;
+        fileName: string;
+      } | null>("dialog:openFile", {
         filters: [
-          { name: 'PES Files', extensions: ['pes'] },
-          { name: 'All Files', extensions: ['*'] },
+          { name: "PES Files", extensions: ["pes"] },
+          { name: "All Files", extensions: ["*"] },
         ],
       });
 
@@ -22,34 +25,46 @@ export class ElectronFileService implements IFileService {
       }
 
       // Read the file content
-      const buffer = await window.electronAPI.invoke<ArrayBuffer>('fs:readFile', result.filePath);
+      const buffer = await window.electronAPI.invoke<ArrayBuffer>(
+        "fs:readFile",
+        result.filePath,
+      );
       const blob = new Blob([buffer]);
-      return new File([blob], result.fileName, { type: 'application/octet-stream' });
+      return new File([blob], result.fileName, {
+        type: "application/octet-stream",
+      });
     } catch (err) {
-      console.error('[ElectronFileService] Failed to open file:', err);
+      console.error("[ElectronFileService] Failed to open file:", err);
       return null;
     }
   }
 
   async saveFileDialog(data: Uint8Array, defaultName: string): Promise<void> {
     if (!window.electronAPI) {
-      throw new Error('Electron API not available');
+      throw new Error("Electron API not available");
     }
 
     try {
-      const filePath = await window.electronAPI.invoke<string | null>('dialog:saveFile', {
+      const filePath = await window.electronAPI.invoke<string | null>(
+        "dialog:saveFile",
+        {
           defaultPath: defaultName,
           filters: [
-          { name: 'PEN Files', extensions: ['pen'] },
-          { name: 'All Files', extensions: ['*'] },
+            { name: "PEN Files", extensions: ["pen"] },
+            { name: "All Files", extensions: ["*"] },
           ],
-      });
+        },
+      );
 
       if (filePath) {
-        await window.electronAPI.invoke('fs:writeFile', filePath, Array.from(data));
+        await window.electronAPI.invoke(
+          "fs:writeFile",
+          filePath,
+          Array.from(data),
+        );
       }
     } catch (err) {
-      console.error('[ElectronFileService] Failed to save file:', err);
+      console.error("[ElectronFileService] Failed to save file:", err);
       throw err;
     }
   }

src/platform/electron/ElectronStorageService.ts

@@ -1,5 +1,8 @@
-import type { IStorageService, ICachedPattern } from '../interfaces/IStorageService';
-import type { PesPatternData } from '../../formats/import/pesImporter';
+import type {
+  IStorageService,
+  ICachedPattern,
+} from "../interfaces/IStorageService";
+import type { PesPatternData } from "../../formats/import/pesImporter";
 
 /**
  * Electron implementation of storage service using electron-store via IPC
@@ -7,7 +10,7 @@ import type { PesPatternData } from '../../formats/import/pesImporter';
 export class ElectronStorageService implements IStorageService {
   private async invoke<T>(channel: string, ...args: unknown[]): Promise<T> {
     if (!window.electronAPI) {
-      throw new Error('Electron API not available');
+      throw new Error("Electron API not available");
     }
     return window.electronAPI.invoke(channel, ...args);
   }
@@ -16,7 +19,7 @@ export class ElectronStorageService implements IStorageService {
     uuid: string,
     pesData: PesPatternData,
     fileName: string,
-    patternOffset?: { x: number; y: number }
+    patternOffset?: { x: number; y: number },
   ): Promise<void> {
     // Convert Uint8Array to array for JSON serialization over IPC
     const serializable = {
@@ -31,14 +34,17 @@ export class ElectronStorageService implements IStorageService {
     };
 
     // Fire and forget (sync-like behavior to match interface)
-    this.invoke('storage:savePattern', serializable).catch(err => {
-      console.error('[ElectronStorage] Failed to save pattern:', err);
+    this.invoke("storage:savePattern", serializable).catch((err) => {
+      console.error("[ElectronStorage] Failed to save pattern:", err);
     });
   }
 
   async getPatternByUUID(uuid: string): Promise<ICachedPattern | null> {
     try {
-      const pattern = await this.invoke<ICachedPattern | null>('storage:getPattern', uuid);
+      const pattern = await this.invoke<ICachedPattern | null>(
+        "storage:getPattern",
+        uuid,
+      );
 
       if (pattern && Array.isArray(pattern.pesData.penData)) {
         // Restore Uint8Array from array
@@ -47,14 +53,16 @@ export class ElectronStorageService implements IStorageService {
 
       return pattern;
     } catch (err) {
-      console.error('[ElectronStorage] Failed to get pattern:', err);
+      console.error("[ElectronStorage] Failed to get pattern:", err);
       return null;
     }
   }
 
   async getMostRecentPattern(): Promise<ICachedPattern | null> {
     try {
-      const pattern = await this.invoke<ICachedPattern | null>('storage:getLatest');
+      const pattern = await this.invoke<ICachedPattern | null>(
+        "storage:getLatest",
+      );
 
       if (pattern && Array.isArray(pattern.pesData.penData)) {
         // Restore Uint8Array from array
@@ -63,7 +71,7 @@ export class ElectronStorageService implements IStorageService {
 
       return pattern;
     } catch (err) {
-      console.error('[ElectronStorage] Failed to get latest pattern:', err);
+      console.error("[ElectronStorage] Failed to get latest pattern:", err);
       return null;
     }
   }
@@ -71,29 +79,38 @@ export class ElectronStorageService implements IStorageService {
   async hasPattern(): Promise<boolean> {
     // Since this is async in Electron, we can't truly implement this synchronously
     // Returning false as a safe default
-    console.warn('[ElectronStorage] hasPattern called synchronously, returning false');
+    console.warn(
+      "[ElectronStorage] hasPattern called synchronously, returning false",
+    );
     return false;
   }
 
   async deletePattern(uuid: string): Promise<void> {
     try {
-      await this.invoke('storage:deletePattern', uuid);
+      await this.invoke("storage:deletePattern", uuid);
     } catch (err) {
-      console.error('[ElectronStorage] Failed to delete pattern:', err);
+      console.error("[ElectronStorage] Failed to delete pattern:", err);
     }
   }
 
   async clearCache(): Promise<void> {
     try {
-      await this.invoke('storage:clear');
+      await this.invoke("storage:clear");
     } catch (err) {
-      console.error('[ElectronStorage] Failed to clear cache:', err);
+      console.error("[ElectronStorage] Failed to clear cache:", err);
     }
   }
 
-  async getCacheInfo(): Promise<{ hasCache: boolean; fileName?: string; uuid?: string; age?: number }> {
+  async getCacheInfo(): Promise<{
+    hasCache: boolean;
+    fileName?: string;
+    uuid?: string;
+    age?: number;
+  }> {
     // This needs to be async in Electron, return empty info synchronously
-    console.warn('[ElectronStorage] getCacheInfo called synchronously, returning empty');
+    console.warn(
+      "[ElectronStorage] getCacheInfo called synchronously, returning empty",
+    );
     return { hasCache: false };
   }
 }

src/platform/index.ts

@@ -1,15 +1,19 @@
-import type { IStorageService } from './interfaces/IStorageService';
-import type { IFileService } from './interfaces/IFileService';
-import { BrowserStorageService } from './browser/BrowserStorageService';
-import { BrowserFileService } from './browser/BrowserFileService';
-import { ElectronStorageService } from './electron/ElectronStorageService';
-import { ElectronFileService } from './electron/ElectronFileService';
+import type { IStorageService } from "./interfaces/IStorageService";
+import type { IFileService } from "./interfaces/IFileService";
+import { BrowserStorageService } from "./browser/BrowserStorageService";
+import { BrowserFileService } from "./browser/BrowserFileService";
+import { ElectronStorageService } from "./electron/ElectronStorageService";
+import { ElectronFileService } from "./electron/ElectronFileService";
 
 /**
  * Detect if running in Electron
  */
 export function isElectron(): boolean {
-  return !!(typeof window !== 'undefined' && window.process && window.process.type === 'renderer');
+  return !!(
+    typeof window !== "undefined" &&
+    window.process &&
+    window.process.type === "renderer"
+  );
 }
 
 /**

src/platform/interfaces/IStorageService.ts

@@ -1,4 +1,4 @@
-import type { PesPatternData } from '../../formats/import/pesImporter';
+import type { PesPatternData } from "../../formats/import/pesImporter";
 
 export interface ICachedPattern {
   uuid: string;
@@ -13,7 +13,7 @@ export interface IStorageService {
     uuid: string,
     pesData: PesPatternData,
     fileName: string,
-    patternOffset?: { x: number; y: number }
+    patternOffset?: { x: number; y: number },
   ): Promise<void>;
 
   getPatternByUUID(uuid: string): Promise<ICachedPattern | null>;
@@ -21,5 +21,10 @@ export interface IStorageService {
   hasPattern(uuid: string): Promise<boolean>;
   deletePattern(uuid: string): Promise<void>;
   clearCache(): Promise<void>;
-  getCacheInfo(): Promise<{ hasCache: boolean; fileName?: string; uuid?: string; age?: number }>;
+  getCacheInfo(): Promise<{
+    hasCache: boolean;
+    fileName?: string;
+    uuid?: string;
+    age?: number;
+  }>;
 }

src/services/BrotherPP1Service.ts

@@ -9,7 +9,7 @@ import { MachineStatus } from "../types/machine";
 export class BluetoothPairingError extends Error {
   constructor(message: string) {
     super(message);
-    this.name = 'BluetoothPairingError';
+    this.name = "BluetoothPairingError";
   }
 }
 
@@ -57,7 +57,8 @@ export class BrotherPP1Service {
   private isProcessingQueue = false;
   private isCommunicating = false;
   private isInitialConnection = false;
-  private communicationCallbacks: Set<(isCommunicating: boolean) => void> = new Set();
+  private communicationCallbacks: Set<(isCommunicating: boolean) => void> =
+    new Set();
   private disconnectCallbacks: Set<() => void> = new Set();
 
   /**
@@ -65,7 +66,9 @@ export class BrotherPP1Service {
    * @param callback Function called when communication state changes
    * @returns Unsubscribe function
    */
-  onCommunicationChange(callback: (isCommunicating: boolean) => void): () => void {
+  onCommunicationChange(
+    callback: (isCommunicating: boolean) => void,
+  ): () => void {
     this.communicationCallbacks.add(callback);
     // Immediately call with current state
     callback(this.isCommunicating);
@@ -89,19 +92,19 @@ export class BrotherPP1Service {
   private setCommunicating(value: boolean) {
     if (this.isCommunicating !== value) {
       this.isCommunicating = value;
-      this.communicationCallbacks.forEach(callback => callback(value));
+      this.communicationCallbacks.forEach((callback) => callback(value));
     }
   }
 
   private handleDisconnect() {
-    console.log('[BrotherPP1Service] Device disconnected');
+    console.log("[BrotherPP1Service] Device disconnected");
     this.server = null;
     this.writeCharacteristic = null;
     this.readCharacteristic = null;
     this.commandQueue = [];
     this.isProcessingQueue = false;
     this.setCommunicating(false);
-    this.disconnectCallbacks.forEach(callback => callback());
+    this.disconnectCallbacks.forEach((callback) => callback());
   }
 
   async connect(): Promise<void> {
@@ -116,7 +119,7 @@ export class BrotherPP1Service {
       }
 
       // Listen for disconnection events
-      this.device.addEventListener('gattserverdisconnected', () => {
+      this.device.addEventListener("gattserverdisconnected", () => {
         this.handleDisconnect();
       });
 
@@ -126,7 +129,8 @@ export class BrotherPP1Service {
       const service = await this.server.getPrimaryService(SERVICE_UUID);
       console.log("Got primary service");
 
-      this.writeCharacteristic = await service.getCharacteristic(WRITE_CHAR_UUID);
+      this.writeCharacteristic =
+        await service.getCharacteristic(WRITE_CHAR_UUID);
       this.readCharacteristic = await service.getCharacteristic(READ_CHAR_UUID);
 
       console.log("Connected to Brother PP1 machine");
@@ -136,7 +140,9 @@ export class BrotherPP1Service {
       console.log("Validating connection with test command...");
       try {
         await this.getMachineState();
-        console.log("Connection validation successful - device is properly paired");
+        console.log(
+          "Connection validation successful - device is properly paired",
+        );
       } catch (e) {
         console.log("Connection validation failed:", e);
         // Disconnect to clean up
@@ -289,16 +295,21 @@ export class BrotherPP1Service {
         // Detect pairing issues during initial connection - empty or invalid response
         if (this.isInitialConnection) {
           if (response.length === 0) {
-            console.log('[BrotherPP1] Empty response received - device likely not paired');
+            console.log(
+              "[BrotherPP1] Empty response received - device likely not paired",
+            );
             throw new BluetoothPairingError(
-              'Device not paired. To pair: long-press the Bluetooth button on the machine, then pair it using your operating system\'s Bluetooth settings. After pairing, try connecting again.'
+              "Device not paired. To pair: long-press the Bluetooth button on the machine, then pair it using your operating system's Bluetooth settings. After pairing, try connecting again.",
             );
           }
           // Check for invalid response (less than 3 bytes means no proper command response)
           if (response.length < 3) {
-            console.log('[BrotherPP1] Invalid response length:', response.length);
+            console.log(
+              "[BrotherPP1] Invalid response length:",
+              response.length,
+            );
             throw new BluetoothPairingError(
-              'Device not paired. To pair: long-press the Bluetooth button on the machine, then pair it using your operating system\'s Bluetooth settings. After pairing, try connecting again.'
+              "Device not paired. To pair: long-press the Bluetooth button on the machine, then pair it using your operating system's Bluetooth settings. After pairing, try connecting again.",
             );
           }
         }
@@ -322,11 +333,12 @@ export class BrotherPP1Service {
         if (this.isInitialConnection && error instanceof Error) {
           const errorMsg = error.message.toLowerCase();
           if (
-            errorMsg.includes('gatt server is disconnected') ||
-            (errorMsg.includes('writevaluewithresponse') && errorMsg.includes('gatt server is disconnected'))
+            errorMsg.includes("gatt server is disconnected") ||
+            (errorMsg.includes("writevaluewithresponse") &&
+              errorMsg.includes("gatt server is disconnected"))
           ) {
             throw new BluetoothPairingError(
-              'Device not paired. To pair: long-press the Bluetooth button on the machine, then pair it using your operating system\'s Bluetooth settings. After pairing, try connecting again.'
+              "Device not paired. To pair: long-press the Bluetooth button on the machine, then pair it using your operating system's Bluetooth settings. After pairing, try connecting again.",
             );
           }
         }
@@ -369,7 +381,7 @@ export class BrotherPP1Service {
       serviceCount = serviceData.serviceCount;
       totalCount = serviceData.totalCount;
     } catch (err) {
-      console.warn('[BrotherPP1] Failed to fetch service count:', err);
+      console.warn("[BrotherPP1] Failed to fetch service count:", err);
     }
 
     return {
@@ -385,13 +397,19 @@ export class BrotherPP1Service {
     };
   }
 
-  async getServiceCount(): Promise<{ serviceCount: number; totalCount: number }> {
+  async getServiceCount(): Promise<{
+    serviceCount: number;
+    totalCount: number;
+  }> {
     const response = await this.sendCommand(Commands.SERVICE_COUNT);
     const data = response.slice(2);
 
     // Read uint32 values in little-endian format
     const readUInt32LE = (offset: number) =>
-      data[offset] | (data[offset + 1] << 8) | (data[offset + 2] << 16) | (data[offset + 3] << 24);
+      data[offset] |
+      (data[offset + 1] << 8) |
+      (data[offset + 2] << 16) |
+      (data[offset + 3] << 24);
 
     return {
       serviceCount: readUInt32LE(0), // Bytes 0-3
@@ -427,8 +445,10 @@ export class BrotherPP1Service {
       speed: readUInt16LE(12),
     };
 
-    console.log('[BrotherPP1] Pattern Info Response:', {
-      rawData: Array.from(data).map(b => b.toString(16).padStart(2, '0')).join(' '),
+    console.log("[BrotherPP1] Pattern Info Response:", {
+      rawData: Array.from(data)
+        .map((b) => b.toString(16).padStart(2, "0"))
+        .join(" "),
       parsed: patternInfo,
     });
 
@@ -580,7 +600,7 @@ export class BrotherPP1Service {
     payload[24] = flip;
     payload[25] = frame;
 
-    console.log('[DEBUG] Layout bounds:', {
+    console.log("[DEBUG] Layout bounds:", {
       boundLeft,
       boundTop,
       boundRight,
@@ -675,7 +695,7 @@ export class BrotherPP1Service {
       moveX = patternOffset.x - patternCenterX;
       moveY = patternOffset.y - patternCenterY;
 
-      console.log('[LAYOUT] Using user-defined offset:', {
+      console.log("[LAYOUT] Using user-defined offset:", {
         patternOffset,
         patternCenter: { x: patternCenterX, y: patternCenterY },
         moveX,
@@ -688,7 +708,7 @@ export class BrotherPP1Service {
       moveX = -patternCenterX;
       moveY = -patternCenterY;
 
-      console.log('[LAYOUT] Auto-centering pattern:', { moveX, moveY });
+      console.log("[LAYOUT] Auto-centering pattern:", { moveX, moveY });
     }
 
     // Send layout with actual pattern bounds

src/services/PatternCacheService.ts

@@ -1,4 +1,4 @@
-import type { PesPatternData } from '../formats/import/pesImporter';
+import type { PesPatternData } from "../formats/import/pesImporter";
 
 interface CachedPattern {
   uuid: string;
@@ -8,13 +8,15 @@ interface CachedPattern {
   patternOffset?: { x: number; y: number };
 }
 
-const CACHE_KEY = 'brother_pattern_cache';
+const CACHE_KEY = "brother_pattern_cache";
 
 /**
  * Convert UUID Uint8Array to hex string
  */
 export function uuidToString(uuid: Uint8Array): string {
-  return Array.from(uuid).map(b => b.toString(16).padStart(2, '0')).join('');
+  return Array.from(uuid)
+    .map((b) => b.toString(16).padStart(2, "0"))
+    .join("");
 }
 
 /**
@@ -36,7 +38,7 @@ export class PatternCacheService {
     uuid: string,
     pesData: PesPatternData,
     fileName: string,
-    patternOffset?: { x: number; y: number }
+    patternOffset?: { x: number; y: number },
   ): void {
     try {
       // Convert penData Uint8Array to array for JSON serialization
@@ -54,11 +56,18 @@ export class PatternCacheService {
       };
 
       localStorage.setItem(CACHE_KEY, JSON.stringify(cached));
-      console.log('[PatternCache] Saved pattern:', fileName, 'UUID:', uuid, 'Offset:', patternOffset);
+      console.log(
+        "[PatternCache] Saved pattern:",
+        fileName,
+        "UUID:",
+        uuid,
+        "Offset:",
+        patternOffset,
+      );
     } catch (err) {
-      console.error('[PatternCache] Failed to save pattern:', err);
+      console.error("[PatternCache] Failed to save pattern:", err);
       // If quota exceeded, clear and try again
-      if (err instanceof Error && err.name === 'QuotaExceededError') {
+      if (err instanceof Error && err.name === "QuotaExceededError") {
         this.clearCache();
       }
     }
@@ -78,7 +87,12 @@ export class PatternCacheService {
 
       // Check if UUID matches
       if (pattern.uuid !== uuid) {
-        console.log('[PatternCache] UUID mismatch. Cached:', pattern.uuid, 'Requested:', uuid);
+        console.log(
+          "[PatternCache] UUID mismatch. Cached:",
+          pattern.uuid,
+          "Requested:",
+          uuid,
+        );
         return null;
       }
 
@@ -87,10 +101,15 @@ export class PatternCacheService {
         pattern.pesData.penData = new Uint8Array(pattern.pesData.penData);
       }
 
-      console.log('[PatternCache] Found cached pattern:', pattern.fileName, 'UUID:', uuid);
+      console.log(
+        "[PatternCache] Found cached pattern:",
+        pattern.fileName,
+        "UUID:",
+        uuid,
+      );
       return pattern;
     } catch (err) {
-      console.error('[PatternCache] Failed to retrieve pattern:', err);
+      console.error("[PatternCache] Failed to retrieve pattern:", err);
       return null;
     }
   }
@@ -114,7 +133,7 @@ export class PatternCacheService {
 
       return pattern;
     } catch (err) {
-      console.error('[PatternCache] Failed to retrieve pattern:', err);
+      console.error("[PatternCache] Failed to retrieve pattern:", err);
       return null;
     }
   }
@@ -135,10 +154,10 @@ export class PatternCacheService {
       const cached = this.getPatternByUUID(uuid);
       if (cached) {
         localStorage.removeItem(CACHE_KEY);
-        console.log('[PatternCache] Deleted pattern with UUID:', uuid);
+        console.log("[PatternCache] Deleted pattern with UUID:", uuid);
       }
     } catch (err) {
-      console.error('[PatternCache] Failed to delete pattern:', err);
+      console.error("[PatternCache] Failed to delete pattern:", err);
     }
   }
 
@@ -148,16 +167,21 @@ export class PatternCacheService {
   static clearCache(): void {
     try {
       localStorage.removeItem(CACHE_KEY);
-      console.log('[PatternCache] Cache cleared');
+      console.log("[PatternCache] Cache cleared");
     } catch (err) {
-      console.error('[PatternCache] Failed to clear cache:', err);
+      console.error("[PatternCache] Failed to clear cache:", err);
     }
   }
 
   /**
    * Get cache info for debugging
    */
-  static getCacheInfo(): { hasCache: boolean; fileName?: string; uuid?: string; age?: number } {
+  static getCacheInfo(): {
+    hasCache: boolean;
+    fileName?: string;
+    uuid?: string;
+    age?: number;
+  } {
     const pattern = this.getMostRecentPattern();
     if (!pattern) {
       return { hasCache: false };

src/stores/usePatternStore.ts

@@ -1,5 +1,5 @@
-import { create } from 'zustand';
-import type { PesPatternData } from '../formats/import/pesImporter';
+import { create } from "zustand";
+import type { PesPatternData } from "../formats/import/pesImporter";
 
 interface PatternState {
   // Pattern data
@@ -19,7 +19,7 @@ interface PatternState {
 export const usePatternStore = create<PatternState>((set) => ({
   // Initial state
   pesData: null,
-  currentFileName: '',
+  currentFileName: "",
   patternOffset: { x: 0, y: 0 },
   patternUploaded: false,
 
@@ -36,7 +36,7 @@ export const usePatternStore = create<PatternState>((set) => ({
   // Update pattern offset
   setPatternOffset: (x: number, y: number) => {
     set({ patternOffset: { x, y } });
-    console.log('[PatternStore] Pattern offset changed:', { x, y });
+    console.log("[PatternStore] Pattern offset changed:", { x, y });
   },
 
   // Mark pattern as uploaded/not uploaded
@@ -61,6 +61,9 @@ export const usePatternStore = create<PatternState>((set) => ({
 
 // Selector hooks for common use cases
 export const usePesData = () => usePatternStore((state) => state.pesData);
-export const usePatternFileName = () => usePatternStore((state) => state.currentFileName);
-export const usePatternOffset = () => usePatternStore((state) => state.patternOffset);
-export const usePatternUploaded = () => usePatternStore((state) => state.patternUploaded);
+export const usePatternFileName = () =>
+  usePatternStore((state) => state.currentFileName);
+export const usePatternOffset = () =>
+  usePatternStore((state) => state.patternOffset);
+export const usePatternUploaded = () =>
+  usePatternStore((state) => state.patternUploaded);

src/stores/useUIStore.ts

@@ -1,5 +1,5 @@
-import { create } from 'zustand';
-import { patternConverterClient } from '../formats/import/client';
+import { create } from "zustand";
+import { patternConverterClient } from "../formats/import/client";
 
 interface UIState {
   // Pyodide state
@@ -23,26 +23,41 @@ export const useUIStore = create<UIState>((set) => ({
   pyodideReady: false,
   pyodideError: null,
   pyodideProgress: 0,
-  pyodideLoadingStep: '',
+  pyodideLoadingStep: "",
   showErrorPopover: false,
 
   // Initialize Pyodide with progress tracking
   initializePyodide: async () => {
     try {
       // Reset progress
-      set({ pyodideProgress: 0, pyodideLoadingStep: 'Starting...', pyodideError: null });
+      set({
+        pyodideProgress: 0,
+        pyodideLoadingStep: "Starting...",
+        pyodideError: null,
+      });
 
       // Initialize with progress callback
       await patternConverterClient.initialize((progress, step) => {
         set({ pyodideProgress: progress, pyodideLoadingStep: step });
       });
 
-      set({ pyodideReady: true, pyodideProgress: 100, pyodideLoadingStep: 'Ready!' });
-      console.log('[UIStore] Pyodide initialized successfully');
+      set({
+        pyodideReady: true,
+        pyodideProgress: 100,
+        pyodideLoadingStep: "Ready!",
+      });
+      console.log("[UIStore] Pyodide initialized successfully");
     } catch (err) {
-      const errorMessage = err instanceof Error ? err.message : 'Failed to initialize Python environment';
-      set({ pyodideError: errorMessage, pyodideProgress: 0, pyodideLoadingStep: '' });
-      console.error('[UIStore] Failed to initialize Pyodide:', err);
+      const errorMessage =
+        err instanceof Error
+          ? err.message
+          : "Failed to initialize Python environment";
+      set({
+        pyodideError: errorMessage,
+        pyodideProgress: 0,
+        pyodideLoadingStep: "",
+      });
+      console.error("[UIStore] Failed to initialize Pyodide:", err);
     }
   },
 
@@ -65,6 +80,9 @@ export const useUIStore = create<UIState>((set) => ({
 // Selector hooks for common use cases
 export const usePyodideReady = () => useUIStore((state) => state.pyodideReady);
 export const usePyodideError = () => useUIStore((state) => state.pyodideError);
-export const usePyodideProgress = () => useUIStore((state) => state.pyodideProgress);
-export const usePyodideLoadingStep = () => useUIStore((state) => state.pyodideLoadingStep);
-export const useErrorPopover = () => useUIStore((state) => state.showErrorPopover);
+export const usePyodideProgress = () =>
+  useUIStore((state) => state.pyodideProgress);
+export const usePyodideLoadingStep = () =>
+  useUIStore((state) => state.pyodideLoadingStep);
+export const useErrorPopover = () =>
+  useUIStore((state) => state.showErrorPopover);

src/types/electron.d.ts

@@ -5,7 +5,9 @@ export interface BluetoothDevice {
 
 export interface ElectronAPI {
   invoke<T = unknown>(channel: string, ...args: unknown[]): Promise<T>;
-  onBluetoothDeviceList: (callback: (devices: BluetoothDevice[]) => void) => void;
+  onBluetoothDeviceList: (
+    callback: (devices: BluetoothDevice[]) => void,
+  ) => void;
   selectBluetoothDevice: (deviceId: string) => void;
 }
 

src/types/machine.ts

@@ -19,33 +19,33 @@ export const MachineStatus = {
   HOOP_AVOIDANCEING: 0x51,
   RL_RECEIVING: 0x60,
   RL_RECEIVED: 0x61,
-  None: 0xDD,
-  TryConnecting: 0xFF,
+  None: 0xdd,
+  TryConnecting: 0xff,
 } as const;
 
-export type MachineStatus = typeof MachineStatus[keyof typeof MachineStatus];
+export type MachineStatus = (typeof MachineStatus)[keyof typeof MachineStatus];
 
 export const MachineStatusNames: Record<MachineStatus, string> = {
-  [MachineStatus.Initial]: 'Initial',
-  [MachineStatus.LowerThread]: 'Lower Thread',
-  [MachineStatus.IDLE]: 'Idle',
-  [MachineStatus.SEWING_WAIT]: 'Ready to Sew',
-  [MachineStatus.SEWING_DATA_RECEIVE]: 'Receiving Data',
-  [MachineStatus.MASK_TRACE_LOCK_WAIT]: 'Waiting for Mask Trace',
-  [MachineStatus.MASK_TRACING]: 'Mask Tracing',
-  [MachineStatus.MASK_TRACE_COMPLETE]: 'Mask Trace Complete',
-  [MachineStatus.SEWING]: 'Sewing',
-  [MachineStatus.SEWING_COMPLETE]: 'Complete',
-  [MachineStatus.SEWING_INTERRUPTION]: 'Interrupted',
-  [MachineStatus.COLOR_CHANGE_WAIT]: 'Waiting for Color Change',
-  [MachineStatus.PAUSE]: 'Paused',
-  [MachineStatus.STOP]: 'Stopped',
-  [MachineStatus.HOOP_AVOIDANCE]: 'Hoop Avoidance',
-  [MachineStatus.HOOP_AVOIDANCEING]: 'Hoop Avoidance In Progress',
-  [MachineStatus.RL_RECEIVING]: 'RL Receiving',
-  [MachineStatus.RL_RECEIVED]: 'RL Received',
-  [MachineStatus.None]: 'None',
-  [MachineStatus.TryConnecting]: 'Connecting',
+  [MachineStatus.Initial]: "Initial",
+  [MachineStatus.LowerThread]: "Lower Thread",
+  [MachineStatus.IDLE]: "Idle",
+  [MachineStatus.SEWING_WAIT]: "Ready to Sew",
+  [MachineStatus.SEWING_DATA_RECEIVE]: "Receiving Data",
+  [MachineStatus.MASK_TRACE_LOCK_WAIT]: "Waiting for Mask Trace",
+  [MachineStatus.MASK_TRACING]: "Mask Tracing",
+  [MachineStatus.MASK_TRACE_COMPLETE]: "Mask Trace Complete",
+  [MachineStatus.SEWING]: "Sewing",
+  [MachineStatus.SEWING_COMPLETE]: "Complete",
+  [MachineStatus.SEWING_INTERRUPTION]: "Interrupted",
+  [MachineStatus.COLOR_CHANGE_WAIT]: "Waiting for Color Change",
+  [MachineStatus.PAUSE]: "Paused",
+  [MachineStatus.STOP]: "Stopped",
+  [MachineStatus.HOOP_AVOIDANCE]: "Hoop Avoidance",
+  [MachineStatus.HOOP_AVOIDANCEING]: "Hoop Avoidance In Progress",
+  [MachineStatus.RL_RECEIVING]: "RL Receiving",
+  [MachineStatus.RL_RECEIVED]: "RL Received",
+  [MachineStatus.None]: "None",
+  [MachineStatus.TryConnecting]: "Connecting",
 };
 
 export interface MachineInfo {

src/utils/cssVariables.ts

@@ -11,9 +11,9 @@ export function getCSSVariable(name: string): string {
  * Canvas color helpers
  */
 export const canvasColors = {
-  grid: () => getCSSVariable('--color-canvas-grid'),
-  origin: () => getCSSVariable('--color-canvas-origin'),
-  hoop: () => getCSSVariable('--color-canvas-hoop'),
-  bounds: () => getCSSVariable('--color-canvas-bounds'),
-  position: () => getCSSVariable('--color-canvas-position'),
+  grid: () => getCSSVariable("--color-canvas-grid"),
+  origin: () => getCSSVariable("--color-canvas-origin"),
+  hoop: () => getCSSVariable("--color-canvas-hoop"),
+  bounds: () => getCSSVariable("--color-canvas-bounds"),
+  position: () => getCSSVariable("--color-canvas-position"),
 };

src/utils/konvaRenderers.ts

@@ -1,8 +1,8 @@
-import Konva from 'konva';
-import type { PesPatternData } from '../formats/import/pesImporter';
-import { getThreadColor } from '../formats/import/pesImporter';
-import type { MachineInfo } from '../types/machine';
-import { MOVE } from '../formats/import/constants';
+import Konva from "konva";
+import type { PesPatternData } from "../formats/import/pesImporter";
+import { getThreadColor } from "../formats/import/pesImporter";
+import type { MachineInfo } from "../types/machine";
+import { MOVE } from "../formats/import/constants";
 
 /**
  * Renders a grid with specified spacing
@@ -11,9 +11,9 @@ export function renderGrid(
   layer: Konva.Layer,
   gridSize: number,
   bounds: { minX: number; maxX: number; minY: number; maxY: number },
-  machineInfo: MachineInfo | null
+  machineInfo: MachineInfo | null,
 ): void {
-  const gridGroup = new Konva.Group({ name: 'grid' });
+  const gridGroup = new Konva.Group({ name: "grid" });
 
   // Determine grid bounds based on hoop or pattern
   const gridMinX = machineInfo ? -machineInfo.maxWidth / 2 : bounds.minX;
@@ -22,20 +22,28 @@ export function renderGrid(
   const gridMaxY = machineInfo ? machineInfo.maxHeight / 2 : bounds.maxY;
 
   // Vertical lines
-  for (let x = Math.floor(gridMinX / gridSize) * gridSize; x <= gridMaxX; x += gridSize) {
+  for (
+    let x = Math.floor(gridMinX / gridSize) * gridSize;
+    x <= gridMaxX;
+    x += gridSize
+  ) {
     const line = new Konva.Line({
       points: [x, gridMinY, x, gridMaxY],
-      stroke: '#e0e0e0',
+      stroke: "#e0e0e0",
       strokeWidth: 1,
     });
     gridGroup.add(line);
   }
 
   // Horizontal lines
-  for (let y = Math.floor(gridMinY / gridSize) * gridSize; y <= gridMaxY; y += gridSize) {
+  for (
+    let y = Math.floor(gridMinY / gridSize) * gridSize;
+    y <= gridMaxY;
+    y += gridSize
+  ) {
     const line = new Konva.Line({
       points: [gridMinX, y, gridMaxX, y],
-      stroke: '#e0e0e0',
+      stroke: "#e0e0e0",
       strokeWidth: 1,
     });
     gridGroup.add(line);
@@ -48,19 +56,19 @@ export function renderGrid(
  * Renders the origin crosshair at (0,0)
  */
 export function renderOrigin(layer: Konva.Layer): void {
-  const originGroup = new Konva.Group({ name: 'origin' });
+  const originGroup = new Konva.Group({ name: "origin" });
 
   // Horizontal line
   const hLine = new Konva.Line({
     points: [-10, 0, 10, 0],
-    stroke: '#888',
+    stroke: "#888",
     strokeWidth: 2,
   });
 
   // Vertical line
   const vLine = new Konva.Line({
     points: [0, -10, 0, 10],
-    stroke: '#888',
+    stroke: "#888",
     strokeWidth: 2,
   });
 
@@ -72,7 +80,7 @@ export function renderOrigin(layer: Konva.Layer): void {
  * Renders the hoop boundary and label
  */
 export function renderHoop(layer: Konva.Layer, machineInfo: MachineInfo): void {
-  const hoopGroup = new Konva.Group({ name: 'hoop' });
+  const hoopGroup = new Konva.Group({ name: "hoop" });
 
   const hoopWidth = machineInfo.maxWidth;
   const hoopHeight = machineInfo.maxHeight;
@@ -87,7 +95,7 @@ export function renderHoop(layer: Konva.Layer, machineInfo: MachineInfo): void {
     y: hoopTop,
     width: hoopWidth,
     height: hoopHeight,
-    stroke: '#2196F3',
+    stroke: "#2196F3",
     strokeWidth: 3,
     dash: [10, 5],
   });
@@ -98,9 +106,9 @@ export function renderHoop(layer: Konva.Layer, machineInfo: MachineInfo): void {
     y: hoopTop + 10,
     text: `Hoop: ${(hoopWidth / 10).toFixed(0)} x ${(hoopHeight / 10).toFixed(0)} mm`,
     fontSize: 14,
-    fontFamily: 'sans-serif',
-    fontStyle: 'bold',
-    fill: '#2196F3',
+    fontFamily: "sans-serif",
+    fontStyle: "bold",
+    fill: "#2196F3",
   });
 
   hoopGroup.add(rect, label);
@@ -114,9 +122,9 @@ export function renderStitches(
   container: Konva.Layer | Konva.Group,
   stitches: number[][],
   pesData: PesPatternData,
-  currentStitchIndex: number
+  currentStitchIndex: number,
 ): void {
-  const stitchesGroup = new Konva.Group({ name: 'stitches' });
+  const stitchesGroup = new Konva.Group({ name: "stitches" });
 
   // Group stitches by color, completion status, and type (stitch vs jump)
   interface StitchGroup {
@@ -164,8 +172,8 @@ export function renderStitches(
         points: group.points,
         stroke: group.color,
         strokeWidth: 1.0,
-        lineCap: 'round',
-        lineJoin: 'round',
+        lineCap: "round",
+        lineJoin: "round",
         dash: [5, 5],
         opacity: group.completed ? 0.6 : 0.25,
       });
@@ -176,8 +184,8 @@ export function renderStitches(
         points: group.points,
         stroke: group.color,
         strokeWidth: 1.5,
-        lineCap: 'round',
-        lineJoin: 'round',
+        lineCap: "round",
+        lineJoin: "round",
         opacity: group.completed ? 1.0 : 0.3,
       });
       stitchesGroup.add(line);
@@ -192,7 +200,7 @@ export function renderStitches(
  */
 export function renderPatternBounds(
   container: Konva.Layer | Konva.Group,
-  bounds: { minX: number; maxX: number; minY: number; maxY: number }
+  bounds: { minX: number; maxX: number; minY: number; maxY: number },
 ): void {
   const { minX, maxX, minY, maxY } = bounds;
   const patternWidth = maxX - minX;
@@ -203,7 +211,7 @@ export function renderPatternBounds(
     y: minY,
     width: patternWidth,
     height: patternHeight,
-    stroke: '#ff0000',
+    stroke: "#ff0000",
     strokeWidth: 2,
     dash: [5, 5],
   });
@@ -217,47 +225,47 @@ export function renderPatternBounds(
 export function renderCurrentPosition(
   container: Konva.Layer | Konva.Group,
   currentStitchIndex: number,
-  stitches: number[][]
+  stitches: number[][],
 ): void {
   if (currentStitchIndex <= 0 || currentStitchIndex >= stitches.length) return;
 
   const stitch = stitches[currentStitchIndex];
   const [x, y] = stitch;
 
-  const posGroup = new Konva.Group({ name: 'currentPosition' });
+  const posGroup = new Konva.Group({ name: "currentPosition" });
 
   // Circle with fill
   const circle = new Konva.Circle({
     x,
     y,
     radius: 8,
-    fill: 'rgba(255, 0, 0, 0.3)',
-    stroke: '#ff0000',
+    fill: "rgba(255, 0, 0, 0.3)",
+    stroke: "#ff0000",
     strokeWidth: 3,
   });
 
   // Crosshair lines
   const hLine1 = new Konva.Line({
     points: [x - 12, y, x - 3, y],
-    stroke: '#ff0000',
+    stroke: "#ff0000",
     strokeWidth: 2,
   });
 
   const hLine2 = new Konva.Line({
     points: [x + 12, y, x + 3, y],
-    stroke: '#ff0000',
+    stroke: "#ff0000",
     strokeWidth: 2,
   });
 
   const vLine1 = new Konva.Line({
     points: [x, y - 12, x, y - 3],
-    stroke: '#ff0000',
+    stroke: "#ff0000",
     strokeWidth: 2,
   });
 
   const vLine2 = new Konva.Line({
     points: [x, y + 12, x, y + 3],
-    stroke: '#ff0000',
+    stroke: "#ff0000",
     strokeWidth: 2,
   });
 
@@ -270,9 +278,9 @@ export function renderCurrentPosition(
  */
 export function renderLegend(
   layer: Konva.Layer,
-  pesData: PesPatternData
+  pesData: PesPatternData,
 ): void {
-  const legendGroup = new Konva.Group({ name: 'legend' });
+  const legendGroup = new Konva.Group({ name: "legend" });
 
   // Semi-transparent background for better readability
   const bgPadding = 8;
@@ -284,9 +292,9 @@ export function renderLegend(
     y: 10,
     width: 100,
     height: legendHeight,
-    fill: 'rgba(255, 255, 255, 0.9)',
+    fill: "rgba(255, 255, 255, 0.9)",
     cornerRadius: 4,
-    shadowColor: 'rgba(0, 0, 0, 0.2)',
+    shadowColor: "rgba(0, 0, 0, 0.2)",
     shadowBlur: 4,
     shadowOffset: { x: 0, y: 2 },
   });
@@ -305,7 +313,7 @@ export function renderLegend(
       width: 20,
       height: 20,
       fill: color,
-      stroke: '#000',
+      stroke: "#000",
       strokeWidth: 1,
     });
 
@@ -315,8 +323,8 @@ export function renderLegend(
       y: legendY + 5,
       text: `Thread ${i + 1}`,
       fontSize: 12,
-      fontFamily: 'sans-serif',
-      fill: '#000',
+      fontFamily: "sans-serif",
+      fill: "#000",
     });
 
     legendGroup.add(swatch, label);
@@ -334,7 +342,7 @@ export function renderDimensions(
   patternWidth: number,
   patternHeight: number,
   stageWidth: number,
-  stageHeight: number
+  stageHeight: number,
 ): void {
   const dimensionText = `${(patternWidth / 10).toFixed(1)} x ${(patternHeight / 10).toFixed(1)} mm`;
 
@@ -348,9 +356,9 @@ export function renderDimensions(
     y: stageHeight - textHeight - padding - 80, // Above zoom controls
     width: textWidth,
     height: textHeight,
-    fill: 'rgba(255, 255, 255, 0.9)',
+    fill: "rgba(255, 255, 255, 0.9)",
     cornerRadius: 4,
-    shadowColor: 'rgba(0, 0, 0, 0.2)',
+    shadowColor: "rgba(0, 0, 0, 0.2)",
     shadowBlur: 4,
     shadowOffset: { x: 0, y: 2 },
   });
@@ -362,10 +370,10 @@ export function renderDimensions(
     height: textHeight,
     text: dimensionText,
     fontSize: 14,
-    fontFamily: 'sans-serif',
-    fill: '#000',
-    align: 'center',
-    verticalAlign: 'middle',
+    fontFamily: "sans-serif",
+    fill: "#000",
+    align: "center",
+    verticalAlign: "middle",
   });
 
   layer.add(background, text);
@@ -379,7 +387,7 @@ export function calculateInitialScale(
   stageHeight: number,
   viewWidth: number,
   viewHeight: number,
-  padding: number = 40
+  padding: number = 40,
 ): number {
   const scaleX = (stageWidth - 2 * padding) / viewWidth;
   const scaleY = (stageHeight - 2 * padding) / viewHeight;

src/utils/machineStateHelpers.ts

@@ -1,23 +1,26 @@
-import { MachineStatus } from '../types/machine';
+import { MachineStatus } from "../types/machine";
 
 /**
  * Machine state categories for safety logic
  */
 export const MachineStateCategory = {
-  IDLE: 'idle',
-  ACTIVE: 'active',
-  WAITING: 'waiting',
-  COMPLETE: 'complete',
-  INTERRUPTED: 'interrupted',
-  ERROR: 'error',
+  IDLE: "idle",
+  ACTIVE: "active",
+  WAITING: "waiting",
+  COMPLETE: "complete",
+  INTERRUPTED: "interrupted",
+  ERROR: "error",
 } as const;
 
-export type MachineStateCategoryType = typeof MachineStateCategory[keyof typeof MachineStateCategory];
+export type MachineStateCategoryType =
+  (typeof MachineStateCategory)[keyof typeof MachineStateCategory];
 
 /**
  * Categorize a machine status into a semantic safety category
  */
-export function getMachineStateCategory(status: MachineStatus): MachineStateCategoryType {
+export function getMachineStateCategory(
+  status: MachineStatus,
+): MachineStateCategoryType {
   switch (status) {
     // IDLE states - safe to perform any action
     case MachineStatus.IDLE:
@@ -67,9 +70,11 @@ export function getMachineStateCategory(status: MachineStatus): MachineStateCate
 export function canDeletePattern(status: MachineStatus): boolean {
   const category = getMachineStateCategory(status);
   // Can delete in IDLE, WAITING, or COMPLETE states, never during ACTIVE operations
-  return category === MachineStateCategory.IDLE ||
+  return (
+    category === MachineStateCategory.IDLE ||
     category === MachineStateCategory.WAITING ||
-         category === MachineStateCategory.COMPLETE;
+    category === MachineStateCategory.COMPLETE
+  );
 }
 
 /**
@@ -79,8 +84,10 @@ export function canDeletePattern(status: MachineStatus): boolean {
 export function canUploadPattern(status: MachineStatus): boolean {
   const category = getMachineStateCategory(status);
   // Can upload in IDLE or COMPLETE states (includes MASK_TRACE_COMPLETE)
-  return category === MachineStateCategory.IDLE ||
-         category === MachineStateCategory.COMPLETE;
+  return (
+    category === MachineStateCategory.IDLE ||
+    category === MachineStateCategory.COMPLETE
+  );
 }
 
 /**
@@ -89,11 +96,13 @@ export function canUploadPattern(status: MachineStatus): boolean {
  */
 export function canStartSewing(status: MachineStatus): boolean {
   // Only in specific ready states
-  return status === MachineStatus.SEWING_WAIT ||
+  return (
+    status === MachineStatus.SEWING_WAIT ||
     status === MachineStatus.MASK_TRACE_COMPLETE ||
     status === MachineStatus.PAUSE ||
     status === MachineStatus.STOP ||
-         status === MachineStatus.SEWING_INTERRUPTION;
+    status === MachineStatus.SEWING_INTERRUPTION
+  );
 }
 
 /**
@@ -101,9 +110,11 @@ export function canStartSewing(status: MachineStatus): boolean {
  */
 export function canStartMaskTrace(status: MachineStatus): boolean {
   // Can start mask trace when IDLE (after upload), SEWING_WAIT, or after previous trace
-  return status === MachineStatus.IDLE ||
+  return (
+    status === MachineStatus.IDLE ||
     status === MachineStatus.SEWING_WAIT ||
-         status === MachineStatus.MASK_TRACE_COMPLETE;
+    status === MachineStatus.MASK_TRACE_COMPLETE
+  );
 }
 
 /**
@@ -123,8 +134,10 @@ export function canResumeSewing(status: MachineStatus): boolean {
 export function shouldConfirmDisconnect(status: MachineStatus): boolean {
   const category = getMachineStateCategory(status);
   // Confirm if disconnecting during active operation or waiting for action
-  return category === MachineStateCategory.ACTIVE ||
-         category === MachineStateCategory.WAITING;
+  return (
+    category === MachineStateCategory.ACTIVE ||
+    category === MachineStateCategory.WAITING
+  );
 }
 
 /**
@@ -132,7 +145,13 @@ export function shouldConfirmDisconnect(status: MachineStatus): boolean {
  */
 export interface StateVisualInfo {
   color: string;
-  iconName: 'ready' | 'active' | 'waiting' | 'complete' | 'interrupted' | 'error';
+  iconName:
+    | "ready"
+    | "active"
+    | "waiting"
+    | "complete"
+    | "interrupted"
+    | "error";
   label: string;
   description: string;
 }
@@ -147,41 +166,41 @@ export function getStateVisualInfo(status: MachineStatus): StateVisualInfo {
   // Map state category to visual properties
   const visualMap: Record<MachineStateCategoryType, StateVisualInfo> = {
     [MachineStateCategory.IDLE]: {
-      color: 'info',
-      iconName: 'ready',
-      label: 'Ready',
-      description: 'Machine is idle and ready for operations'
+      color: "info",
+      iconName: "ready",
+      label: "Ready",
+      description: "Machine is idle and ready for operations",
     },
     [MachineStateCategory.ACTIVE]: {
-      color: 'warning',
-      iconName: 'active',
-      label: 'Active',
-      description: 'Operation in progress - do not interrupt'
+      color: "warning",
+      iconName: "active",
+      label: "Active",
+      description: "Operation in progress - do not interrupt",
     },
     [MachineStateCategory.WAITING]: {
-      color: 'warning',
-      iconName: 'waiting',
-      label: 'Waiting',
-      description: 'Waiting for user or machine action'
+      color: "warning",
+      iconName: "waiting",
+      label: "Waiting",
+      description: "Waiting for user or machine action",
     },
     [MachineStateCategory.COMPLETE]: {
-      color: 'success',
-      iconName: 'complete',
-      label: 'Complete',
-      description: 'Operation completed successfully'
+      color: "success",
+      iconName: "complete",
+      label: "Complete",
+      description: "Operation completed successfully",
     },
     [MachineStateCategory.INTERRUPTED]: {
-      color: 'danger',
-      iconName: 'interrupted',
-      label: 'Interrupted',
-      description: 'Operation paused or stopped'
+      color: "danger",
+      iconName: "interrupted",
+      label: "Interrupted",
+      description: "Operation paused or stopped",
     },
     [MachineStateCategory.ERROR]: {
-      color: 'danger',
-      iconName: 'error',
-      label: 'Error',
-      description: 'Machine in error or unknown state'
-    }
+      color: "danger",
+      iconName: "error",
+      label: "Error",
+      description: "Machine in error or unknown state",
+    },
   };
 
   return visualMap[category];

src/utils/timeCalculation.ts

@@ -20,7 +20,7 @@ export function convertStitchesToMinutes(stitchCount: number): number {
  */
 export function calculatePatternTime(
   colorBlocks: Array<{ stitchCount: number }>,
-  currentStitch: number
+  currentStitch: number,
 ): {
   totalMinutes: number;
   elapsedMinutes: number;
@@ -44,7 +44,8 @@ export function calculatePatternTime(
       break;
     } else {
       // We're partway through this block
-      const stitchesInBlock = currentStitch - (cumulativeStitches - block.stitchCount);
+      const stitchesInBlock =
+        currentStitch - (cumulativeStitches - block.stitchCount);
       elapsedMinutes += convertStitchesToMinutes(stitchesInBlock);
       break;
     }
@@ -63,5 +64,5 @@ export function calculatePatternTime(
 export function formatMinutes(minutes: number): string {
   const mins = Math.floor(minutes);
   const secs = Math.round((minutes - mins) * 60);
-  return `${mins}:${String(secs).padStart(2, '0')}`;
+  return `${mins}:${String(secs).padStart(2, "0")}`;
 }

vitest.config.ts

@@ -1,9 +1,9 @@
-import { defineConfig } from 'vitest/config';
+import { defineConfig } from "vitest/config";
 
 export default defineConfig({
   test: {
     globals: true,
-    environment: 'node',
-    include: ['src/**/*.{test,spec}.{js,ts}'],
+    environment: "node",
+    include: ["src/**/*.{test,spec}.{js,ts}"],
   },
 });