Figure 27.4 Lock-in inverted. The durable core you own—prompts, tool schemas, the
eval set—sits at the center (in accent), and the three parts you rent (the
model, the framework, the runtime) plug in around it through identical, thin
standard sockets. Because the sockets are standard, each rented module has a
swappable twin waiting: the ecosystem can churn and a swap becomes an edit behind
an interface rather than a rewrite.
