"When I left, I documented a lot, but there was a lot of nuance I took with me."
That is the sentence every growing product team eventually lives through.
Docs capture the official version. People carry the real version: why this decision happened, what failed last time, which customer shaped the requirement, which constraint mattered more than it looked like on paper, and which part of the stack everyone is quietly afraid to touch.
Marelys described the engineering version of the same problem: the architect holds most of the system knowledge, and the team handles small issues without a shared written picture because the new way of working is so different from the old one.
Adriel described the tooling version: internal systems were supposed to trace feature decisions, but "99 times out of 100, you'll click it and it's empty." The PRD existed somewhere else. The context never became memory.
Hamster gives that nuance somewhere to live before someone changes teams, leaves the company, or gets pulled into three other priorities. Blueprints describe what is true about the product. Methods describe how the team works. The Context Graph connects Briefs, conversations, documents, people, and decisions so the next person starts from what the team already knows.
This is not documentation as a chore. It is product memory as part of delivery.
The next hire should not need six coffee chats to learn why the product works this way. The next AI session should not need a full oral history before it can help. The next Brief should be able to draw on what the team already learned.