Version history helps trace edits, not explain decisions

Shared document version history should support, not replace, a compact decision log.

Version history is useful for seeing who changed a shared document and for restoring earlier versions, but it should not be the only place a team looks for decisions. A decision log gives the durable sentence: date, owner, decision, reason, and supporting link. Version history shows movement; the decision log explains intent. When a document has both, people can recover edits and also understand why the final version exists.