fix(server): prioritize zod issues and format them

Author: mozmo15

src/server/zod-compat.ts

@@ -195,16 +195,19 @@ export function normalizeObjectSchema(schema: AnySchema | ZodRawShapeCompat | un
  */
 export function getParseErrorMessage(error: unknown): string {
     if (error && typeof error === 'object') {
+        // When present, prioritize zod issues and format as a message and path
+        if ('issues' in error && Array.isArray(error.issues) && error.issues.length > 0) {
+            return error.issues
+                .map(
+                    (i: { message: string; path: string[] }) =>
+                        `${i.message} at ${i.path.length ? 'path ' + i.path.join('.') : 'object root'}`
+                )
+                .join('\n');
+        }
         // Try common error structures
         if ('message' in error && typeof error.message === 'string') {
             return error.message;
         }
-        if ('issues' in error && Array.isArray(error.issues) && error.issues.length > 0) {
-            const firstIssue = error.issues[0];
-            if (firstIssue && typeof firstIssue === 'object' && 'message' in firstIssue) {
-                return String(firstIssue.message);
-            }
-        }
         // Fallback: try to stringify the error
         try {
             return JSON.stringify(error);