Merges FN-3954: adds a blocker fanout system where task staleness automatically escalates to upstream blocking tasks, with a new `blocker-fanout` core module, dashboard hooks wiring that surfaces escalation status on the board and executor status bar, and a new settings toggle to disable escalation.
Fusion-Task-Id: FN-3954
Adds a "high fan-out" indicator that surfaces when a task blocks an unusually large number of downstream tasks, displayed as a warning badge on TaskCards and in the ExecutorStatusBar. The feature includes core type definitions, dashboard UI updates to render the warning with appropriate styling and
Fusion-Task-Id: FN-3942
- Extract isTaskStuck and countStuckTasks into shared utils/taskStuck.ts utility
- Replace hardcoded 10-minute threshold with project taskStuckTimeoutMs setting
- Thread taskStuckTimeoutMs from App settings fetch through ExecutorStatusBar to useExecutorStats
- Return 0 stuck tasks when timeout is undefined/0 (disabled), matching engine behavior
- Update tests to verify disabled state, custom thresholds, and zero threshold edge case
- Add CSS rules for executor status bar footer with safe-area padding
- Update App.tsx and AgentsView.tsx layout to accommodate footer space
- Add regression tests for footer-safe project layout (App.test.tsx)
- Add unit tests for ExecutorStatusBar component
- Document footer-safe dashboard layout behavior in README
- Share task list data between footer ExecutorStatusBar and board view to ensure consistent counts
- Refactor MissionManager component with improved structure and readability
- Refactor useExecutorStats hook and simplify test coverage
- Update ExecutorStatusBar component and tests for accurate count display
- Consolidate and clean up dashboard styles.css
- Update footer status bar documentation in README
