package-lock.json

@@ -15070,6 +15070,16 @@
         "murmur-32": "^0.1.0 || ^0.2.0"
       }
     },
+    "node_modules/randombytes": {
+      "version": "2.1.0",
+      "resolved": "https://registry.npmjs.org/randombytes/-/randombytes-2.1.0.tgz",
+      "integrity": "sha512-vYl3iOX+4CKUWuxGi9Ukhie6fsqXqS9FE2Zaic4tNFD2N2QQaXOMFbuKK4QmDHC0JO6B1Zp41J0LpT0oR68amQ==",
+      "dev": true,
+      "license": "MIT",
+      "dependencies": {
+        "safe-buffer": "^5.1.0"
+      }
+    },
     "node_modules/range-parser": {
       "version": "1.2.1",
       "resolved": "https://registry.npmjs.org/range-parser/-/range-parser-1.2.1.tgz",
@@ -16069,6 +16079,16 @@
         "url": "https://github.com/sponsors/sindresorhus"
       }
     },
+    "node_modules/serialize-javascript": {
+      "version": "6.0.2",
+      "resolved": "https://registry.npmjs.org/serialize-javascript/-/serialize-javascript-6.0.2.tgz",
+      "integrity": "sha512-Saa1xPByTTq2gdeFZYLLo+RFE35NHZkAbqZeWNd3BpzppeVisAqpDjcp8dyf6uIvEqJRd46jemmyA4iFIeVk8g==",
+      "dev": true,
+      "license": "BSD-3-Clause",
+      "dependencies": {
+        "randombytes": "^2.1.0"
+      }
+    },
     "node_modules/serve-static": {
       "version": "2.2.1",
       "resolved": "https://registry.npmjs.org/serve-static/-/serve-static-2.2.1.tgz",
@@ -17598,15 +17618,16 @@
       }
     },
     "node_modules/terser-webpack-plugin": {
-      "version": "5.4.0",
+      "version": "5.3.16",
-      "resolved": "https://registry.npmjs.org/terser-webpack-plugin/-/terser-webpack-plugin-5.4.0.tgz",
+      "resolved": "https://registry.npmjs.org/terser-webpack-plugin/-/terser-webpack-plugin-5.3.16.tgz",
-      "integrity": "sha512-Bn5vxm48flOIfkdl5CaD2+1CiUVbonWQ3KQPyP7/EuIl9Gbzq/gQFOzaMFUEgVjB1396tcK0SG8XcNJ/2kDH8g==",
+      "integrity": "sha512-h9oBFCWrq78NyWWVcSwZarJkZ01c2AyGrzs1crmHZO3QUg9D61Wu4NPjBy69n7JqylFF5y+CsUZYmYEIZ3mR+Q==",
       "dev": true,
       "license": "MIT",
       "dependencies": {
         "@jridgewell/trace-mapping": "^0.3.25",
         "jest-worker": "^27.4.5",
         "schema-utils": "^4.3.0",
+        "serialize-javascript": "^6.0.2",
         "terser": "^5.31.1"
       },
       "engines": {

src/components/ProgressMonitor/ProgressMonitor.tsx

@@ -71,12 +71,12 @@ export function ProgressMonitor() {
   const isMaskTraceComplete =
     machineStatus === MachineStatus.MASK_TRACE_COMPLETE;
 
-  // Use our own PEN stitch count as the source of truth for total stitches.
+  // Use PEN stitch count as fallback when machine reports 0 total stitches
-  // The machine's patternInfo.totalStitches uses a different counting method than
+  const totalStitches = patternInfo
-  // currentStitch (e.g. excludes lock stitches), so it can't be used as the max.
+    ? patternInfo.totalStitches === 0 && displayPattern?.penStitches
-  const totalStitches = displayPattern?.penStitches
+      ? displayPattern.penStitches.stitches.length
-    ? displayPattern.penStitches.stitches.length
+      : patternInfo.totalStitches
-    : (patternInfo?.totalStitches ?? 0);
+    : 0;
 
   // Use adjustedStitchIndex (from step control) when available, otherwise machine-reported
   const currentStitch =
@@ -156,10 +156,8 @@ export function ProgressMonitor() {
             totalStitches={totalStitches}
             lastRolledBackError={lastRolledBackError}
             colorBlocks={colorBlocks}
-            onAdjustPosition={(offset) =>
+            onAdjustPosition={adjustStitchPosition}
-              adjustStitchPosition(offset, totalStitches)
+            onSetPosition={setStitchPosition}
-            }
-            onSetPosition={(index) => setStitchPosition(index, totalStitches)}
           />
         )}
 

src/stores/useMachineStore.ts

@@ -65,8 +65,8 @@ interface MachineState {
   startSewing: () => Promise<void>;
   resumeSewing: () => Promise<void>;
   deletePattern: () => Promise<void>;
-  setStitchPosition: (index: number, maxStitches?: number) => Promise<void>;
+  setStitchPosition: (index: number) => Promise<void>;
-  adjustStitchPosition: (offset: number, maxStitches?: number) => Promise<void>;
+  adjustStitchPosition: (offset: number) => Promise<void>;
 
   // Initialization
   initialize: () => void;
@@ -338,11 +338,11 @@ export const useMachineStore = create<MachineState>((set, get) => ({
   },
 
   // Set stitch position to an absolute index
-  setStitchPosition: async (index: number, maxStitches?: number) => {
+  setStitchPosition: async (index: number) => {
     const { isConnected, service, patternInfo } = get();
     if (!isConnected) return;
 
-    const totalStitches = maxStitches ?? patternInfo?.totalStitches ?? 0;
+    const totalStitches = patternInfo?.totalStitches || 0;
     const clamped = Math.max(0, Math.min(index, totalStitches));
 
     try {
@@ -359,11 +359,11 @@ export const useMachineStore = create<MachineState>((set, get) => ({
   },
 
   // Adjust stitch position by a relative offset
-  adjustStitchPosition: async (offset: number, maxStitches?: number) => {
+  adjustStitchPosition: async (offset: number) => {
     const { sewingProgress, adjustedStitchIndex } = get();
     const currentIndex =
       adjustedStitchIndex ?? sewingProgress?.currentStitch ?? 0;
-    await get().setStitchPosition(currentIndex + offset, maxStitches);
+    await get().setStitchPosition(currentIndex + offset);
   },
 
   // Handle automatic stitch rollback for thread errors

src/utils/brotherColors.ts

@@ -57,12 +57,6 @@ export interface ThreadColorInfo {
 // Type-safe Brother color data
 const brotherColors = brotherColorData as BrotherColor[];
 
-// Maximum RGB Euclidean distance to accept a catalog number match.
-// PES catalog numbers from pystitch use a different numbering scheme than our
-// Brother color database, so a catalog hit can resolve to the wrong color.
-// A match is only trusted if the database entry's RGB is within this distance.
-const CATALOG_COLOR_MATCH_THRESHOLD = 50;
-
 /**
  * Convert RGB values to hex color string
  */
@@ -272,32 +266,25 @@ export function enhanceThreadWithBrotherColor(
 ): ThreadColorInfo {
   const { matchByRGB = true } = options;
 
+  // First, try to match by catalog number
+  if (thread.catalogNumber) {
+    const brotherInfo = mapThreadCode(thread.catalogNumber);
+    if (brotherInfo) {
+      // Found a Brother color match by catalog number - use Brother data
+      return brotherInfo;
+    }
+  }
+
+  // Second, try exact RGB matching if enabled (replicates BrotherColor.FromColor logic)
   const cleanHex = thread.hex.replace("#", "");
   const r = parseInt(cleanHex.slice(0, 2), 16);
   const g = parseInt(cleanHex.slice(2, 4), 16);
   const b = parseInt(cleanHex.slice(4, 6), 16);
 
-  // First, try to match by catalog number — but only accept the match if the
-  // catalog entry's RGB is close to the thread's actual color. PES catalog
-  // numbers from pystitch use a different numbering scheme than our Brother
-  // color database, so a catalog hit can be the wrong color entirely.
-  if (thread.catalogNumber) {
-    const brotherInfo = mapThreadCode(thread.catalogNumber);
-    if (brotherInfo?.rgb) {
-      const dr = brotherInfo.rgb.r - r;
-      const dg = brotherInfo.rgb.g - g;
-      const db = brotherInfo.rgb.b - b;
-      const distance = Math.sqrt(dr * dr + dg * dg + db * db);
-      if (distance <= CATALOG_COLOR_MATCH_THRESHOLD) {
-        return brotherInfo;
-      }
-    }
-  }
-
-  // Try exact RGB matching (replicates BrotherColor.FromColor logic)
   if (matchByRGB) {
     const brotherColor = findBrotherColorByRGB(r, g, b);
     if (brotherColor) {
+      // Found exact RGB match - use Brother data
       return brotherColorToThreadInfo(brotherColor);
     }
   }