kcode-kweb-context
kcode-kweb-context owns Kennedy's in-session Kweb node context and its
provider-facing box projection policy.
The crate is deliberately independent of network fetching and Chatend
persistence. Callers fetch a requested node and its fixed connections, apply
them to Context, then translate the returned BoxSpec values into their box
system.
See Documentation.md for the public API and projection guarantees.