feat(back-end): pla tought

backend/src/main/java/com/printcalculator/controller/QuoteSessionController.java

@@ -296,9 +296,7 @@ public class QuoteSessionController {
             return variant;
         }
 
-        String requestedMaterialCode = settings.getMaterial() != null
-                ? settings.getMaterial().trim().toUpperCase()
-                : "PLA";
+        String requestedMaterialCode = normalizeRequestedMaterialCode(settings.getMaterial());
 
         FilamentMaterialType materialType = materialRepo.findByMaterialCode(requestedMaterialCode)
                 .orElseGet(() -> materialRepo.findByMaterialCode("PLA")
@@ -316,6 +314,18 @@ public class QuoteSessionController {
                 .orElseThrow(() -> new RuntimeException("No active variant for material: " + requestedMaterialCode));
     }
 
+    private String normalizeRequestedMaterialCode(String value) {
+        if (value == null || value.isBlank()) {
+            return "PLA";
+        }
+
+        return value.trim()
+                .toUpperCase(Locale.ROOT)
+                .replace('_', ' ')
+                .replace('-', ' ')
+                .replaceAll("\\s+", " ");
+    }
+
     // 3. Update Line Item
     @PatchMapping("/line-items/{lineItemId}")
     @Transactional

backend/src/main/java/com/printcalculator/dto/PrintSettingsDto.java

@@ -8,7 +8,7 @@ public class PrintSettingsDto {
     private String complexityMode;
     
     // Common
-    private String material; // e.g. "PLA", "PETG"
+    private String material; // e.g. "PLA", "PLA TOUGH", "PETG"
     private String color;    // e.g. "White", "#FFFFFF"
     private Long filamentVariantId;
     private Long printerMachineId;

backend/src/main/java/com/printcalculator/service/OrcaProfileResolver.java

@@ -116,6 +116,7 @@ public class OrcaProfileResolver {
                 : "PLA";
 
         return switch (materialCode) {
+            case "PLA TOUGH" -> "Bambu PLA Tough @BBL A1";
             case "PETG" -> "Generic PETG";
             case "TPU" -> "Generic TPU";
             case "PC" -> "Generic PC";

backend/src/main/java/com/printcalculator/service/ProfileManager.java

@@ -46,6 +46,7 @@ public class ProfileManager {
         
         // Material Aliases
         profileAliases.put("pla_basic", "Bambu PLA Basic @BBL A1");
+        profileAliases.put("pla_tough", "Bambu PLA Tough @BBL A1");
         profileAliases.put("petg_basic", "Bambu PETG Basic @BBL A1");
         profileAliases.put("tpu_95a", "Bambu TPU 95A @BBL A1");
         

backend/src/main/java/com/printcalculator/service/QuoteCalculator.java

@@ -175,6 +175,7 @@ public class QuoteCalculator {
 
     private String detectMaterialCode(String profileName) {
         String lower = profileName.toLowerCase();
+        if (lower.contains("pla tough") || lower.contains("pla_tough")) return "PLA TOUGH";
         if (lower.contains("petg")) return "PETG";
         if (lower.contains("tpu")) return "TPU";
         if (lower.contains("abs")) return "ABS";