The brief is written and nobody has turned it into work yet. Sai reads it, breaks it into sized tasks, and leaves every one of them in Backlog — because it doesn't know what you already started.
Read this project brief [paste or upload] and break it into a Kanban board. Columns: Backlog, To Do, In Progress, Review, Done. For each task, give: a short title (5–7 words), one-line description, assignee if mentioned, and estimated effort [S/M/L]. Put tasks in Backlog by default — don't guess what's already in progress. Output as a [Google Sheet / Trello / Notion board]. If the brief has phases, group tasks by phase using labels.