- Unify stuck-task derivation using project settings (taskStuckTimeoutMs) instead of hardcoded values
- Thread taskStuckTimeoutMs through Board, Column, WorktreeGroup, and TaskCard components
- Add visual stuck indicator with pulsing animation on in-progress task cards
- Resolve merge conflicts with isSearchActive prop from main (both props coexist)
- Add taskStuck utility unit tests and update README with stuck indicator docs
