- Fix isCircularDependency function to properly handle numeric task ID lookups - Add robust comparison for both string and numeric task IDs - Add comprehensive test cases for cross-level dependency scenarios - Resolves issue where subtasks could not depend on top-level tasks Fixes #542 🤖 Generated with [Claude Code](https://claude.ai/code) Co-authored-by: Ralph Khreish <Crunchyman-ralph@users.noreply.github.com>