fix: add blank line before footer divider to fix rendering after details

GitHub markdown needs a blank line between </details> and subsequent
HTML elements. Without it, the footer renders inside the collapsed
section.

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

utils/todoTracking.ts

@@ -39,7 +39,7 @@ function renderTodoMarkdown(todos: TodoItem[]): string {
         case "cancelled":
           return `- ~~${todo.content}~~`;
         case "in_progress":
-          return `- **→** ${todo.content}`;
+          return `- [ ] <img src="https://uploads.pullfrog.com/Progress%20Indicator.gif"  width="11" style="visibility: visible; max-width: 100%;" />  ${todo.content}`;
         case "pending":
           return `- [ ] ${todo.content}`;
         default: