id: task-46 title: Split-pane layout status: Done assignee: [] created_date: '2025-06-11' updated_date: '2025-06-13' labels:

• enhancement dependencies: []

Description

Goal: List on the left, detail on the right.

Detailed work:

• Add a parent grid layout, 30% width left / 70% right.
• Left pane lists tasks; right pane shows currently selected task detail.
• Arrow keys change list selection and refresh detail pane.

Acceptance Criteria

• [x] Down-arrow changes highlight and updates detail.
• [x] Resizing keeps the 30/70 ratio within ±2 columns.