fix: resolve workflow linking on resume, update proposals auto-commit, and validation baseline rules

feat: add quick demo login, fix archived knowledge filter and workflow completion state

perf: optimize login transition and dashboard loading performance

feat: auto-resume orphaned workflows on server restart + cancel button

feat: live stage progression during workflow execution

feat: workflow visualization, knowledge detail, fixtures, restart test, demo docs

feat: complete end-to-end platform with all standout behaviors

feat: add human review approval gate and workflow resume