fix(copy-code): replace console errors with visual feedback

Author: javatcoding1

src/utils/MarkdownRenderer.tsx

@@ -227,8 +227,6 @@ const MarkdownRenderer: React.FC<MarkdownRendererProps> = ({
     }
   }, []);
 
-
-
   const handleAnchorClick = useCallback((e: MouseEvent) => {
     const target = e.target as HTMLElement;
 

src/utils/copy-code.ts

@@ -21,20 +21,29 @@ function handleCopyClick(event: Event): void {
   copyToClipboard(codeContent, button);
 }
 
-async function copyToClipboard(text: string, button: HTMLElement): Promise<void> {
+/**
+ * Copy text to clipboard with fallback for older browsers
+ * @param text - The text content to copy to clipboard
+ * @param button - The copy button element for showing feedback
+ */
+async function copyToClipboard(
+  text: string,
+  button: HTMLElement,
+): Promise<void> {
   try {
     await navigator.clipboard.writeText(text);
     showSuccessMessage(button);
   } catch {
     // Fallback for older browsers
     const textarea = document.createElement('textarea');
     textarea.value = text;
-    textarea.style.cssText = 'position:fixed;left:-999999px;top:-999999px;opacity:0;';
+    textarea.style.cssText =
+      'position:fixed;left:-999999px;top:-999999px;opacity:0;';
     document.body.appendChild(textarea);
     textarea.select();
     const success = document.execCommand('copy');
     document.body.removeChild(textarea);
-    
+
     if (success) {
       showSuccessMessage(button);
     } else {
@@ -43,46 +52,60 @@ async function copyToClipboard(text: string, button: HTMLElement): Promise<void>
   }
 }
 
+/**
+ * Show success feedback by transforming button to green "Copied!" state
+ * @param button - The copy button element to show success feedback in
+ */
 function showSuccessMessage(button: HTMLElement): void {
   const originalContent = button.innerHTML;
   const originalClasses = button.className;
-  
-  button.className = 'copy-code-btn bg-green-100 text-green-800 text-xs px-4 py-2 rounded-lg transition-all duration-200 flex items-center space-x-2 shadow-sm border border-green-200';
+
+  button.className =
+    'copy-code-btn bg-green-100 text-green-800 text-xs px-4 py-2 rounded-lg transition-all duration-200 flex items-center space-x-2 shadow-sm border border-green-200';
   button.innerHTML = `
     <svg class="w-4 h-4" fill="none" stroke="currentColor" viewBox="0 0 24 24">
       <path stroke-linecap="round" stroke-linejoin="round" stroke-width="2" d="M5 13l4 4L19 7"/>
     </svg>
     <span class="font-medium">Copied!</span>
   `;
   button.setAttribute('disabled', 'true');
-  
+
   setTimeout(() => {
     button.className = originalClasses;
     button.innerHTML = originalContent;
     button.removeAttribute('disabled');
   }, 2000);
 }
 
+/**
+ * Show error feedback by transforming button to red "Failed!" state
+ * @param button - The copy button element to show error feedback in
+ */
 function showErrorMessage(button: HTMLElement): void {
   const originalContent = button.innerHTML;
   const originalClasses = button.className;
-  
-  button.className = 'copy-code-btn bg-red-100 text-red-800 text-xs px-4 py-2 rounded-lg transition-all duration-200 flex items-center space-x-2 shadow-sm border border-red-200';
+
+  button.className =
+    'copy-code-btn bg-red-100 text-red-800 text-xs px-4 py-2 rounded-lg transition-all duration-200 flex items-center space-x-2 shadow-sm border border-red-200';
   button.innerHTML = `
     <svg class="w-4 h-4" fill="none" stroke="currentColor" viewBox="0 0 24 24">
       <path stroke-linecap="round" stroke-linejoin="round" stroke-width="2" d="M6 18L18 6M6 6l12 12"/>
     </svg>
     <span class="font-medium">Failed!</span>
   `;
   button.setAttribute('disabled', 'true');
-  
+
   setTimeout(() => {
     button.className = originalClasses;
     button.innerHTML = originalContent;
     button.removeAttribute('disabled');
   }, 2500);
 }
 
+/**
+ * Initialize copy functionality for all copy buttons on the page
+ * Attaches click event handlers to elements with 'copy-code-btn' class
+ */
 export function initCodeCopy(): void {
   document.querySelectorAll('.copy-code-btn').forEach((button) => {
     if (button instanceof HTMLElement) {