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>
The existing integer priority field represents positional ordering
within a state, not semantic importance. Rename it to rank and
introduce a new priority field with enum values URGENT, HIGH,
MEDIUM and LOW across the entire stack.
Rank is now scoped to (state, priority) so tasks are ordered
within each priority group. A generated priority_rank column
combines both fields into a single sortable integer for cursor
pagination.
Dragging a task across priority groups updates its priority
automatically based on the drop position neighbors. The backend
first moves the task to the new group then repositions it at the
target rank.
The migration defaults existing rows to MEDIUM priority and
backfills ranks per (state, priority) group.
Signed-off-by: Sacha Al Himdani <sacha@getprobo.com>