Ignore scanner decode noise and log debug errors in dev

src/features/stock/stock-detail-page.js

@@ -509,6 +509,9 @@ export function stockDetailPageData(store) {
 
       this.stopScanner();
       this.scannerState.isLoading = true;
+      const shouldLogDecodeErrors = import.meta.env.DEV;
+      let lastDecodeErrorName = '';
+      let lastDecodeErrorAt = 0;
 
       try {
         if (!this.scannerReader) {
@@ -529,13 +532,20 @@ export function stockDetailPageData(store) {
               return;
             }
 
-            if (!error || error?.name === 'NotFoundException') {
+            if (error) {
+              // Continuous decode emits expected per-frame misses/errors before a valid barcode is found.
+              // Keep the modal quiet and only surface startup failures from the outer catch block.
+              if (shouldLogDecodeErrors) {
+                const errorName = String(error?.name || 'UnknownError');
+                const now = Date.now();
+                if (errorName !== lastDecodeErrorName || now - lastDecodeErrorAt > 2000) {
+                  console.debug('[scanner] Ignoring frame decode error while scanning:', errorName, error?.message || '');
+                  lastDecodeErrorName = errorName;
+                  lastDecodeErrorAt = now;
+                }
+              }
               return;
             }
-
-            if (!this.scannerState.error) {
-              this.scannerState.error = this.normalizeScannerError(error);
-            }
           },
         );
       } catch (error) {