fix: display friendly legacy printer model names in stream overlay (#3134)

frontend/src/utils/printerModel.ts

@@ -0,0 +1,44 @@
+// Map SSDP model codes to display names
+export function mapModelCode(ssdpModel: string | null): string {
+  if (!ssdpModel) return '';
+  const modelMap: Record<string, string> = {
+    // H2 Series
+    'O1D': 'H2D',
+    'O1E': 'H2D Pro',
+    'O2D': 'H2D Pro',
+    'O1C': 'H2C',
+    'O1C2': 'H2C',
+    'O1S': 'H2S',
+    // X1 Series
+    'BL-P001': 'X1C',
+    'BL-P002': 'X1',
+    'BL-P003': 'X1E',
+    // X2 Series
+    'N6': 'X2D',
+    // A2 Series
+    'N9': 'A2L',
+    // P Series
+    'C11': 'P1S',
+    'C12': 'P1P',
+    'C13': 'P2S',
+    // A1 Series
+    'N2S': 'A1',
+    'N1': 'A1 Mini',
+    // Direct matches
+    'X1C': 'X1C',
+    'X1': 'X1',
+    'X1E': 'X1E',
+    'X2D': 'X2D',
+    'P1S': 'P1S',
+    'P1P': 'P1P',
+    'P2S': 'P2S',
+    'A1': 'A1',
+    'A1 Mini': 'A1 Mini',
+    'A2L': 'A2L',
+    'H2D': 'H2D',
+    'H2D Pro': 'H2D Pro',
+    'H2C': 'H2C',
+    'H2S': 'H2S',
+  };
+  return modelMap[ssdpModel] || ssdpModel;
+}