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Phase 6: Display and Basic Commands - Add display.go with colored formatting for tasks, projects, tags - Implement cmd/root.go with Cobra command structure - Implement cmd/list.go for listing and filtering tasks - Implement cmd/add.go with support for regular and recurring tasks - Implement cmd/done.go with bulk completion and confirmation Phase 7: Advanced Commands - Implement cmd/modify.go for updating task attributes - Implement cmd/delete.go with soft delete confirmation - Implement cmd/start.go and cmd/stop.go for task timing - Implement cmd/count.go for counting filtered tasks - Implement cmd/projects.go and cmd/tags.go for aggregation Phase 8: Integration and Polish - Update main.go to use CLI commands - Add colored output with fatih/color - Format task lists with proper alignment - Highlight overdue tasks in red, upcoming in yellow - Test end-to-end workflow: add, list, done, recurring tasks - Verify recurrence spawning works correctly All CLI commands functional and tested!