meshbay.git/packages/meshbay-hub/src/meshbay_hub/static/transport-rewrap.js, branch 0.16

feat(protocol): bind the MNP token to the node it is for (E10)

2026-09-26T00:03:50Z

The audience split stopped a member's node credential from opening the hub API. It did not stop the credential being *replayed to another node*: the MNP token carried the member's whole group set and named no node, so a token handed to node A's operator could be presented to node B the member also belongs to. That does not read content on B — the handshake still requires proving node B's group key, which the operator lacks — but it reaches B's pre-proof window and fetches the member's *encrypted* keypair bundle for B (offline-attackable, bounded, audited): a disclosure §2.4 says should not follow from hosting a member on A. The token now names the node it is minted for (a `node` claim = that node's Ed25519 key), and authorize_token refuses one that names a different key. The client already knows the target node's key (from /v1/groups/{id}/nodes) and asks for a token bound to it: POST /v1/nodes/mnp-token takes node_pk, and transport.connect threads it (group-page, the connection pool and rewrap pass n.pk_node; reconnect preserves it). A token that names no node is still accepted, because the hub only mints one for the authenticated requester, so an unbound token grants nothing across accounts — which also keeps non-binding callers working with no churn. Done before deploy, so it folds into the MNP 4.0 flag day rather than needing its own. Docs: §5.2, register E10, MESHBAY_NODE_PROTOCOL.md §6.3. test_handshake.py and test_mnp_token.py hold the binding (a token for node A is refused by node B, accepted by node A; an unbound token still works); red before, green after. common/node/hub suites green. Co-Authored-By: Claude Opus 4.8

refactor(client): split transport.js into classic scripts

2026-09-25T10:07:49Z

transport.js keeps the core (connection, reconnect, leases, dispatch). Chat, media, admin, upload and device methods move, cut as text, into transport-*.js scripts that hand a class of their own to extendTransport, which copies each method onto MeshBayTransport.prototype; the codec, roster checks, node pins and the rewrap fan-out move as they were. Both shells load them after transport.js. Every prototype member, class property and top-level function has the same source text as before. Co-Authored-By: Claude Opus 5.5