fix: prevent memory leaks by ensuring proper closure of Playwright pages

- Fixes critical memory leak issue where browser pages remained open
- Ensures proper cleanup of Playwright resources after page operations
- Improves resource management in browser farm implementation

This is an urgent fix to address resource leakage that could impact system stability.

.gitignore

@@ -225,3 +225,4 @@ tree.md
 .scripts
 .local
 .do
+/plans