Add PATCH /doc-tasks/{taskKey}/duties that updates live snapshot,
assignments, and document_records while blocking when a squad run holds
the document lease. Planning PUT remains PLAN_FROZEN.
Co-authored-by: Cursor <cursoragent@cursor.com>
Add ResolveDocTaskDuty, require the system policy on save/preview,
lock the policy row during activation, and derive A/A/A assignments.
Co-authored-by: Cursor <cursoragent@cursor.com>
Evaluate required document approvals before stage transition, expose readiness/advance APIs, show StageAdvanceBanner in the UI, and keep legacy workflow switch for explicit initial_workflow_key projects.
Co-authored-by: Cursor <cursoragent@cursor.com>