- Add "Créer une tâche" button on my-tasks page with mandatory project selector
- TaskModal now accepts optional projects prop for project selection in create mode
- Replace fixed-width kanban columns (w-72 shrink-0) with flexible layout (min-w-36 flex-1)
- Add min-w-0 and overflow-x-hidden on default layout to properly contain content
- Kanban now adapts to screen size from 1024px to 1920px+
Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
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