Protocol v3 (Noise) — optional
Against a v3 hub the client uses the default
ChaCha20-Poly1305 Noise suite and derives the PSK
from the password above with argon2id in-browser —
full parity with hivemind-core, so the password
alone is enough with no server-side configuration.
These fields are optional: paste a provisioned
64-hex PSK to skip derivation, and/or a server key
pin for TOFU pinning. Leave blank to use the password.