refactor: use distinct error messages for bundle vs contained ref validation

- Bundle refs: 'Bundle reference not found: <ref>'
- Contained refs: 'Contained reference not found: #id'
- Update parity classifier to match both old HL7 and new internal messages
- Update test assertions to match new message format

Author: quotentiroler

src/generator/emitters/validator/validatorTemplates.ts

@@ -30,7 +30,7 @@ export function generateBundleRefValidation(baseResourceType: string | undefined
         const ref = rec.reference as string;
         if (ref.startsWith('urn:uuid:') || ref.startsWith('urn:oid:')) {
           if (!_fullUrls.has(ref)) {
-            errors.push('Bundled or contained reference not found within the bundle/resource ' + ref);
+            errors.push('Bundle reference not found: ' + ref);
           }
         } else if (/^[A-Za-z]+\\//.test(ref)) {
           if (!_resIds.has(ref)) {
@@ -39,7 +39,7 @@ export function generateBundleRefValidation(baseResourceType: string | undefined
               if (_fu.endsWith('/' + ref) || _fu.endsWith(ref)) { _found = true; break; }
             }
             if (!_found) {
-              errors.push('Bundled or contained reference not found within the bundle/resource ' + ref);
+              errors.push('Bundle reference not found: ' + ref);
             }
           }
         }
@@ -83,7 +83,7 @@ export function generateContainedRefValidation(baseResourceType: string | undefi
         if (_ref.startsWith('#')) {
           const _id = _ref.substring(1);
           if (_id && !_containedIds.has(_id)) {
-            errors.push('Bundled or contained reference not found within the bundle/resource ' + _ref);
+            errors.push('Contained reference not found: ' + _ref);
           }
         }
       }

src/test/parity/parityHelpers.ts

@@ -396,9 +396,10 @@ export function extractFieldFromMessage(msg: string): FieldIssue | null {
     return { field: 'constraint', type: 'constraint', message: msg };
   }
 
-  // HL7 bundled/contained reference resolution errors
-  // e.g., "Bundled or contained reference not found within the bundle/resource Encounter/id-xxx"
-  if (msg_lower.includes('reference not found within the bundle') || msg_lower.includes('contained reference not found')) {
+  // Bundled/contained reference resolution errors
+  // HL7: "Bundled or contained reference not found within the bundle/resource Encounter/id-xxx"
+  // Internal: "Bundle reference not found: urn:uuid:..." / "Contained reference not found: #id"
+  if (msg_lower.includes('reference not found within the bundle') || msg_lower.includes('contained reference not found') || msg_lower.includes('bundle reference not found')) {
     return { field: 'constraint', type: 'constraint', message: msg };
   }
 

src/test/validatorGaps.test.ts

@@ -467,7 +467,7 @@ describe('validatorGenerator gaps', () => {
       ];
       const code = generateCode('TestBundle', fields, { baseResourceType: 'Bundle' });
 
-      expect(code).toContain('Bundled or contained reference not found');
+      expect(code).toContain('Bundle reference not found');
     });
 
     it('does NOT emit bundle reference resolution for non-Bundle base type', () => {