id: task-24 title: Handle subtasks in the Kanban view status: Done assignee: [] created_date: '2025-06-09' updated_date: '2025-06-09' completed_date: '2025-06-09' labels: [] dependencies: []

Description

Display subtasks indented with pipes | and em dashes — under their parent task. Subtask IDs show the pipe prefix while titles are cleanly spaced. Includes configurable column width settings for optimal display formatting.

Acceptance Criteria

• [x] Subtasks appear under their parent task in the Kanban board
• [x] Pipes and em dashes visually indent subtasks for clarity
• [x] Subtask IDs prefixed with |— (2 spaces + pipe + em dash)
• [x] Subtask titles indented with 6 spaces total for optimal alignment
• [x] Column width configurable via max_column_width in config.yml

Implementation Notes

• Updated generateKanbanBoard() in src/board.ts to group subtasks under their parent when both share the same status.
• Subtasks use enhanced formatting: IDs prefixed with |— (2 spaces + pipe + em dash), titles indented with 6 spaces total for optimal visual alignment.
• Added configurable column width via maxColumnWidth parameter and max_column_width in config.yml (default: 20 for terminal, 80 for export).
• Added new unit test nests subtasks under their parent when statuses match in src/test/board.test.ts.
• Successfully integrated subtask functionality with ID sorting (task 23), vertical layout (task 21), and export features (task 25).
• Enhanced sorting to use compareIds for both parent tasks and subtasks, ensuring proper numeric ordering.
• Subtask functionality works seamlessly across all board layouts (horizontal/vertical) and export operations.
• Board export supports both terminal and markdown formats with proper column width constraints.