Assigns redis as a provider, puts the contributions and unsealed password the mesh
would deliver in its receives path, and authenticates as the consumer with the mesh's
password — PONG proves the login was created with exactly that password (a
self-generated one answers WRONGPASS), with MESH_SEAL_KEY set nowhere.
Claude-Session: https://claude.ai/code/session_01LrgweAeERJYBg88c5cKDzF