Apply suggestions from code review

Co-authored-by: Copilot <175728472+Copilot@users.noreply.github.com>

server.js

@@ -51,7 +51,12 @@ try {
         
         // Database management methods used by admin routes
         addCustomWord: (word, severity, category, createdBy) => Promise.resolve({
-            success: false, 
+            id: null,
+            word: word || null,
+            severity: severity || null,
+            category: category || null,
+            createdBy: createdBy || null,
+            success: false,
             error: 'Profanity filter not available - please check server configuration'
         }),
         removeCustomWord: (wordId) => Promise.resolve({
@@ -171,11 +176,6 @@ function setupRoutes() {
 }
 
 // Validate profanity filter is properly initialized before setting up routes
-if (!profanityFilter) {
-    console.error('CRITICAL ERROR: profanityFilter is undefined after initialization attempt.');
-    console.error('Cannot start server without a functional profanity filter.');
-    process.exit(1);
-}
 
 // Initialize routes after everything is set up
 setupRoutes();