test/zebra-spaces.test.js — pure Node, four tiers:
1. pure protocol parity: extracts sigJoin/sigAction directly from
web/zebra-spaces.html (so the test tracks the shipped page),
compares produced bytes against fixtures pinned to the Go-side
unit tests in proxy.unturf.com/cmd/zebra-spaces-signal/main_test.go.
If JS drifts from Go by one byte the test fails — exactly the
silent break that would kill promotions in production.
2. ed25519 sign/verify: WebCrypto Ed25519 round-trip + tamper detection,
the same crypto stack the page uses for signed role transitions.
3. vault round-trip: PBKDF2 600k + AES-GCM, mirrors vaultExport/Import
in the page. Verifies wrong-password rejection.
4. live server (optional): if ZEBRA_SPACES_BINARY is set, launches the
relay, dials over real WebSocket, drives full join -> mic-invite ->
accept flow using browser APIs end to end.
Makefile: 'test-zebra-spaces' target auto-builds the relay binary
from ../proxy.unturf.com when present so the live tier runs without
manual setup. 'test-all' now includes it.
Russell Ballestrini
dedb44179d