feat: add download and share buttons to list view and modal

- Add Download button to download file as .md file
- Add Share button to copy GitHub link to clipboard
- Both buttons appear in modal header and list view actions
- Use icon-only buttons in list view for cleaner UI

website/src/scripts/pages/instructions.ts

@@ -3,7 +3,7 @@
  */
 import { createChoices, getChoicesValues, type Choices } from '../choices';
 import { FuzzySearch } from '../search';
-import { fetchData, debounce, escapeHtml, getGitHubUrl, getInstallDropdownHtml, setupDropdownCloseHandlers } from '../utils';
+import { fetchData, debounce, escapeHtml, getGitHubUrl, getInstallDropdownHtml, setupDropdownCloseHandlers, getActionButtonsHtml, setupActionHandlers } from '../utils';
 import { setupModal, openFileModal } from '../modal';
 
 interface Instruction {
@@ -73,6 +73,7 @@ function renderItems(items: Instruction[], query = ''): void {
       </div>
       <div class="resource-actions">
         ${getInstallDropdownHtml('instructions', item.path, true)}
+        ${getActionButtonsHtml(item.path, true)}
         <a href="${getGitHubUrl(item.path)}" class="btn btn-secondary btn-small" target="_blank" onclick="event.stopPropagation()">
           GitHub
         </a>
@@ -122,6 +123,7 @@ export async function initInstructionsPage(): Promise<void> {
   
   setupModal();
   setupDropdownCloseHandlers();
+  setupActionHandlers();
 }
 
 // Auto-initialize when DOM is ready