One record type, four ways to look at it

Plan

Work is broken down until a unit fits inside a week. Dependencies are declared once and drawn everywhere they matter, so a date that slips shows up on the plan it affects rather than in somebody's inbox a fortnight later.

Build

Boards, lists and a calendar are views over the same records. Changing the view never changes the data, which is what lets two teams look at one backlog through the lens each prefers without arguing about the tool.

Review

Comments resolve against a revision rather than floating free. An approval records who approved what, not merely that somebody did — the distinction matters the first time a decision is questioned six months on.

Report

Dashboards read the records the work already lives in. There is no export step, so a number on a dashboard is never a fortnight behind the thing it claims to describe.