8adf26ad20
Introduce IN_PROGRESS as a new task state between TODO and DONE across the full stack: database enum, Go backend, GraphQL, MCP, and frontend. The task state icon now cycles forward on click (TODO → IN_PROGRESS → DONE → TODO), and the action dropdown provides explicit "Move to" options for any state transition. The "All" tab supports drag-and-drop between state sections to change a task's state. Signed-off-by: Sacha Al Himdani <sacha@getprobo.com>